Electric control system, control method and excavator

Abstract

The invention discloses an electric control system, a control method and an excavator in the technical field of engineering machinery, and aims at solving the problems that in the prior art, a manual adjustment mode is tedious and inconvenient, and the height and horizontal adjustment dimension is single. The device comprises a control box with a control module, an operation instruction input module in signal connection with the control module, an angle adjusting support assembly in transmission connection with the control box, and a turnover adjusting module arranged in the control box. The operation instruction input module is used for receiving an operation instruction input by a user; the control module is used for determining a target position state of the operation box according to the operation instruction and generating a corresponding action execution control instruction; the method is suitable for operation box systems of different scenes and postures, so that the comfort and accuracy of man-machine interaction are improved.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to an electric control system, control method, and excavator for excavator applications. Background Technology

[0002] During excavator operation, operators need to manipulate the control handle for extended periods to perform actions such as digging and bulldozing, with short breaks required to wait for the next task. However, existing control boxes are mostly fixed structures or only support simple adjustments, failing to adapt to the operator's body type, operating posture, and work environment. This not only leads to hand fatigue for operators but also causes a decrease in operating accuracy, seriously affecting work efficiency and safety.

[0003] Meanwhile, the existing control box's structural layout easily obstructs space when operators enter and exit the cab, resulting in insufficient width of the access passage. This makes operators prone to bumping into the control box during entry and exit, affecting both ease of passage and creating safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide an electric control system, control method, and excavator that solves the problem that existing armrest boxes have limited adjustment freedom, can only be adjusted in a single dimension, and cannot switch to a preset comfortable posture with one click under complex working conditions.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution: In a first aspect, the present invention provides an electric control system, including a control box having a control module, an operation command input module that is signal-connected to the control module, an angle adjustment bracket assembly that is drive-connected to the control box, and a flip adjustment module disposed inside the control box. The operation instruction input module is used to receive operation instructions input by the user; The control module is used to determine the target position state of the operation box according to the operation instructions, and generate corresponding action execution control instructions; The flip adjustment module is connected to the angle adjustment bracket assembly and is used to drive the angle adjustment bracket assembly to move according to the action execution control command, so as to drive the control box to rotate to the target position.

[0006] By using the angle adjustment bracket assembly as the core transmission component and connecting it to the control box, and using the flip adjustment module to drive the control box to rotate to adjust the pitch angle, the applicability of the control box in different working postures is improved. The simple and compact mechanical structure replaces the traditional independent and complex seat adjustment mechanism, optimizes the cab space layout, improves the driver's driving comfort and safety, and is suitable for different vehicle models and driver body types, thus enhancing versatility.

[0007] Furthermore, the flipping adjustment module includes an attitude adjustment execution unit and a guide limiting unit. The attitude adjustment execution unit can drive the control box to rotate around the axis to a target position. The guide limiting unit can selectively lock or unlock the current attitude of the control box. When the attitude adjustment execution unit drives the control box to rotate to the target position, the guide limiting unit synchronously or correspondingly cooperates to lock the control box at the target position. When attitude adjustment is required, the lock is released to allow the control box to continue rotating.

[0008] The self-locking tilt adjustment module ensures that the driver can smoothly and safely adjust the seat position while seated, keeping the seat surface close to the driver's body.

[0009] Furthermore, the attitude adjustment execution unit includes an unlocking handle, a self-locking gas spring, a latching mechanism, a latch unlocking flexible shaft, and a gas spring unlocking flexible shaft; the control box includes a first control assembly and a second control assembly symmetrically arranged with the first control assembly, the second control assembly having a relatively opposite operating side and an execution side; The unlocking handle and the self-locking gas spring are located on the operating side, while the latching mechanism is located on the executing side. The latch unlocking flexible shaft and the gas spring unlocking flexible shaft are both connected to the unlocking handle and extend from the operating side to the executing side to transmit the operating force of the unlocking latching mechanism and the release self-locking gas spring, respectively.

[0010] Through the coordinated action of the unlocking handle, the self-locking gas spring, and the latching mechanism, along with the latch unlocking flexible shaft and the gas spring unlocking flexible shaft, this attitude adjustment actuator achieves reliable locking and convenient unlocking of the stable position of the second control assembly, ensuring that the control box's attitude is adjustable and securely self-locking during use.

[0011] Furthermore, the guide limiting unit includes a locking pin, a guide groove, and a flip limiting groove. When the second control assembly moves to the target posture, the locking pin can be engaged in the corresponding flip limiting groove to form a lock. When the locking pin is disengaged from the flip limiting groove, the second control assembly resumes movement along the guide groove to achieve unlocking and posture change.

[0012] Through the coordinated movement of the locking pin and the guide wheel in the guide groove, combined with the constraint of the flipping limit groove, the guide and limit unit achieves precise guidance and reliable limit of the flipping angle of the second control assembly, ensuring the motion stability and positional accuracy of the control box during rotation.

[0013] Furthermore, the angle adjustment bracket assembly includes a first support plate assembly, a linkage rod assembly, a second linkage assembly connected to the first support plate assembly, a bracket base, a fourth linkage assembly connected to the first support plate assembly, a second support plate assembly, and a lead screw motor; The first control assembly and the second control assembly are respectively connected to the first tray assembly and the second tray assembly in a one-to-one correspondence; The linkage assembly is connected to the bracket base via a pressure plate, and the lead screw motor is connected to the bracket base.

[0014] Driven by a lead screw motor, and in conjunction with a symmetrical linkage mechanism consisting of a first support plate assembly, a second support plate assembly, a linkage rod assembly, and multiple sets of connecting rods, the angle adjustment bracket assembly can smoothly and synchronously adjust the angle of the support plates on both sides of the seat, thereby achieving automated, reliable, and stable adjustment of the control box support angle.

[0015] Furthermore, the first pallet assembly includes a bushing, a sleeve, and a limiting sleeve. The bushing passes through the sleeve and is hinged to an external component via a pin. The limiting sleeve is sleeved on the pin.

[0016] Through the combined structure of bushing 1, sleeve, limiting sleeve and pin, the symmetrically arranged first and second pallet assemblies achieve a reliable hinge connection with external components. The limiting sleeve effectively constrains the axial displacement of the pin, ensuring the stability and structural integrity of the pallet assembly during rotation.

[0017] Furthermore, the linkage assembly includes a first connecting rod, a first pin, a third connecting rod, a linkage rod, a second connecting rod, a lead screw drive sleeve, and a limiting ring. The first pin is connected to the first connecting rod, and the linkage rod passes through the first connecting rod, the second connecting rod, and the third connecting rod to form a linkage structure. The limiting ring is connected to the linkage rod by a fixing pin, and the lead screw drive sleeve is disposed between the first connecting rod and the second connecting rod. The lead screw motor passes through the lead screw drive sleeve.

[0018] A rigid assembly is formed by connecting rods and welding multiple connecting rods together. The lead screw motor drives the lead screw transmission sleeve. This linkage assembly can convert the rotational motion of the motor into precise and synchronous linear motion of multiple links. At the same time, the cooperation between the limit ring and the fixing pin ensures the reliable axial positioning of the transmission components, thereby realizing the stable and coordinated linkage of the entire linkage mechanism.

[0019] Furthermore, the operation instruction input module includes an angle adjustment control switch, and the control module pre-stores sitting multi-joint coordinates corresponding to various work scenarios obtained based on the human joint model; in response to the triggering of the angle adjustment control switch (1.4), the control module calls the sitting multi-joint coordinates of the corresponding work scenario and drives the flip adjustment module to flip the control box to the sitting multi-joint coordinates.

[0020] By setting an angle adjustment control switch as the interface for the driver to issue commands to switch the attitude of the control box, the attitude of the control box can be adjusted more conveniently, which not only simplifies the operation process, but also improves the flexibility and accuracy of operation.

[0021] In a second aspect, the present invention also provides an excavator, including a seat memory module, a seat surface assembly, and an electric control system as described in any of the above claims; the electric control system is configured with multiple operating scenarios; the operating instructions include operating scenario switching instructions; The seat memory module stores the work scenario and the seat surface assembly posture that matches the work scenario; The control module is signal-connected to the seat memory module; The control module is also used to, in response to receiving a work scenario switching instruction input by the operation instruction input module, obtain the seat seat assembly posture matching the target work scenario by calling the seat memory module, and control the seat seat assembly to switch to the seat seat assembly posture.

[0022] Thirdly, the present invention also provides a control method for an electric control system implemented by any of the above-described electric control systems, the control method comprising the following steps: The control module responds to the operation command input by the operation command input module, determines the target position state of the control box, and generates a corresponding action execution control command so that the flip adjustment module drives the angle adjustment bracket assembly to move according to the action execution control command, thereby causing the control box to rotate to the target position state; The operation instructions include work scenario switching instructions.

[0023] By receiving control command signals and driving the control box to rotate for pitch control, intelligent and scenario-based control of the control system is achieved; by responding to the operation scenario switching command, the control box is automatically adjusted to the target position, actively adapting to human-machine operation needs and improving operation comfort and efficiency.

[0024] Compared with the prior art, the beneficial effects achieved by the electric control system, control method and excavator of the present invention are as follows: 1. This invention achieves modular control of the control box by automatically receiving work status commands through the linkage design of the flip adjustment module and the angle adjustment bracket assembly. It not only adapts to the posture requirements of multiple states such as resting, digging, and bulldozing, but also supports personalized adjustments. It effectively solves the problems of existing seat control modes being single, adjustment jamming and deviation, and poor adaptability to multiple states. It can accurately match the driver's real-time sitting posture and operating posture, reduce physical fatigue, and improve work efficiency and operating accuracy.

[0025] 2. The tilting adjustment module designed in this invention achieves automatic tilting and smooth reset of the cab through the coordinated action of a self-locking gas spring, a latching mechanism, and a guide limit module. The unlocking handle is easily accessible, and the tilting process requires no significant forward leaning or strenuous operation. Furthermore, the guide wheels prevent metal-to-metal friction, ensuring smooth and noiseless movement. Compared to existing lever-type tilting mechanisms, this effectively widens the cab's access passage, solving problems of space obstruction and potential collision hazards, while simultaneously improving the convenience and comfort of the tilting operation. 3. This invention uses an integrated angle adjustment control switch, which is located within easy reach of the operator near the seat back. Combined with an electric adjustment structure, it replaces the traditional manual knob / lever, eliminating the need for distraction during operation. The adjustment process is precise and responsive, solving the problems of cumbersome adjustment steps and insufficient precision in existing technologies. Attached Figure Description

[0026] 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a flowchart of a control method for an electric control system provided in some embodiments of the present invention; Figure 2 These are structural schematic diagrams of different operating scenarios of an electric control system provided in some embodiments of the present invention; Figure 3 This is a schematic diagram of the seat mounting structure of an electric control system provided in some embodiments of the present invention; Figure 4 This is a schematic diagram of the structure of a hand control module of an electric control system provided in some embodiments of the present invention; Figure 5 This is a schematic diagram of the structure of an angle adjustment bracket assembly of an electric control system provided in some embodiments of the present invention; Figure 6 This is an exploded view of an angle adjustment bracket assembly of an electric control system provided in some embodiments of the present invention; Figure 7 This is a schematic diagram of the structure of a support base for an electric control system provided in some embodiments of the present invention; Figure 8 This is a schematic diagram of the linkage assembly of an electric control system provided in some embodiments of the present invention; Figure 9 This is a schematic diagram of the angle adjustment of an electric control system provided in some embodiments of the present invention; Figure 10 This is a schematic diagram of the linkage ratio of an electric control system provided in some embodiments of the present invention; Figure 11 This is a schematic diagram of the first link of an electric control system provided in some embodiments of the present invention; Figure 12 This is a schematic diagram of the structure of an attitude adjustment execution unit of an electric control system provided in some embodiments of the present invention; Figure 13 This is a schematic diagram of the guide and limit unit structure of an electric control system provided in some embodiments of the present invention; Explanation of reference numerals in the attached figures: 1. Right control box; 2. Left control box; 3. Angle adjustment bracket assembly; 4. Seat seat assembly; 5. Seat base; 1.1. Upper right housing; 1.2. Lower right housing; 1.3. Right elbow rest; 1.4. Angle adjustment control switch; 6. First control assembly; 7. Second control assembly; 2.1. Upper left housing; 2.2. Lower left housing; 2.3. Left elbow rest; 3.1. First support plate assembly; 3.6. Second support plate assembly; 3.1.1. Bushing one; 3.1.2. Sleeve; 3.1.3. Limiting sleeve; 3.2. Linkage rod assembly; 3.2.1. First connecting rod; 3.2.2. First pin; 3.2.3. Third connecting rod; 3.2.4. Linkage rod; 3.2.5. Second connecting rod; 3. 2.6 Lead screw drive sleeve; 3.2.7 Limiting ring; 3.3 Second connecting rod assembly; 3.3.1 Bushing two; 3.3.2 Second pin; 3.4 Bracket base; 3.4.1 Third pin; 3.4.2 Pressure plate; 3.5 Fourth connecting rod assembly; 3.7 Lead screw motor; 3.7.1 Lead screw motor rotating shaft; 3.4.3 Angle adjustment limiting groove; 7.1 Unlocking handle; 7.2 Self-locking gas spring; 7.3 Latch mechanism; 7.4 Latch unlocking flexible shaft (7.4); 7.5 Gas spring unlocking flexible shaft; 7.6 Tilting shaft; 7.7 Locking pin shaft; 7.8 Guide wheel one; 7.9 Guide groove; 7.10 Tilting limiting groove; 7.11 Guide wheel two. Detailed Implementation

[0028] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Example

[0029] like Figure 1-3 As shown, this embodiment provides an electric control system, including a control box with a control module, an operation command input module connected to the control module by signal, an angle adjustment bracket assembly 3 connected to the control box by transmission, and a flip adjustment module disposed inside the control box; the control box includes a right control box 1 and a left control box 2, the left control box 2 includes a left upper shell 2.1, a left lower shell 2.2, a left elbow support 2.3 and a second control assembly 7, which are symmetrically arranged with the right control box 1, together forming the operation and support modules on both sides of the driver's seat.

[0030] The operation instruction input module is used to receive operation instructions input by the user; The control module is used to determine the target position state of the operation box according to the operation instructions, and generate corresponding action execution control instructions; The flip adjustment module is connected to the angle adjustment bracket assembly 3 and is used to drive the angle adjustment bracket assembly 3 to move according to the action execution control command, so as to drive the control box to rotate to the target position.

[0031] In summary, the electric control system provided in this embodiment utilizes existing technology to classify various operating scenarios such as driver rest, excavation, and bulldozing into multiple comfortable operating postures. With the assistance of the angle adjustment bracket assembly 3, the driver can quickly switch postures with a single button to adapt to various working conditions, ensuring comfort and safety during long-term operation. The tilt adjustment module allows the control box to be tilted, and combined with the support of the angle adjustment bracket assembly 3, the pitch angle of the control box can be adjusted, reducing driver fatigue and thus improving work efficiency and operational accuracy. More specifically, as... Figure 13 As shown, the tilt adjustment module can also control the control box on either side, and expanding the tilt angle between the module and the seat assembly 4 can increase the driver's legroom, optimize the cab entry and exit space, and solve the problems of laborious operation and space obstruction of traditional tilt mechanisms.

[0032] In some embodiments, the flip adjustment module includes an attitude adjustment execution unit and a guide limiting unit. The attitude adjustment execution unit can drive the control box to rotate around an axis to a target position. The guide limiting unit can selectively lock or unlock the current attitude of the control box. When the attitude adjustment execution unit drives the control box to rotate to the target position, the guide limiting unit synchronously or correspondingly cooperates to lock the control box at that target position and unlocks it to allow the control box to continue rotating when attitude adjustment is needed. It can be understood that, as Figure 12 As shown, under the hierarchical control of unlocking the guide limit unit, rotating the attitude adjustment execution unit to the target position, and locking the guide limit unit to the target position, the left control box 2 achieves a smooth and safe attitude switching, ensuring that the driver can easily operate without moving his position when he is close to the seat, thus improving the convenience and safety of the flip operation.

[0033] In some embodiments, the attitude adjustment execution unit includes an unlocking handle 7.1, a self-locking gas spring 7.2, a latching mechanism 7.3, a latch unlocking flexible shaft 7.4, and a gas spring unlocking flexible shaft 7.5; the control box includes a first control assembly 6 and a second control assembly 7 symmetrically arranged with respect to the first control assembly 6, the second control assembly 7 having an operating side and an execution side; the unlocking handle 7.1 and the self-locking gas spring 7.2 are located on the operating side, and the latching mechanism 7.3 is correspondingly located on the execution side; the latch unlocking flexible shaft 7.4 and the gas spring unlocking flexible shaft 7.5 are both connected to the unlocking handle 7.1 and extend from the operating side to the execution side to transmit the operating force of the unlocking latching mechanism 7.3 and the release self-locking gas spring 7.2, respectively. Optionally, the guide limiting unit includes a locking pin 7.7, a guide groove 7.9, and a flip limiting groove 7.10. When the second operating assembly 7 moves to the target posture, the locking pin 7.7 can engage with the corresponding flip limiting groove 7.10 to form a lock; when the locking pin 7.7 exits from the flip limiting groove 7.10, the second operating assembly 7 resumes movement along the guide groove 7.9 to achieve unlocking and posture change. It can be understood that the first operating assembly 6 is located inside the right operating box 1, and the second operating assembly 7 is located inside the left operating box 2, as shown below. Figure 12 , 13As shown, the unlocking handle 7.1 and the self-locking gas spring 7.2 are both mounted on the left operating side of the second operating assembly 7, while the latching mechanism 7.3 is mounted on the right actuating side of the second operating assembly 7. The unlocking flexible shaft and the gas spring unlocking flexible shaft 7.5 are mounted on the right side of the unlocking handle 7.1. On the operating side, the configuration of the unlocking handle 7.1 and the self-locking gas spring 7.2 allows the user to easily control the device. On the actuating side, the latching mechanism 7.3 is configured to ensure the accurate execution of the side assembly's functions. Simultaneously, the latch unlocking flexible shaft 7.4 and the gas spring unlocking flexible shaft 7.5 allow the operation of the unlocking handle 7.1 to be transmitted to the actuating side, unlocking the latching mechanism and the self-locking gas spring respectively, thereby controlling the movement of the side assembly. The locking pin shaft 7.7 and the guide wheel are mounted on the bottom plane of the second operating assembly 7, while the guide groove 7.9 and the tilting limit groove 7.10 are both integrally cut and formed on the second operating assembly 7. The second operating assembly 7 provides overall support, structural support for the operating box, and ensures stability during tilting. The tilting shaft 7.6 connects the upper and lower parts of the assembly via a sleeve shaft, providing support for the tilting shaft 7.6. More specifically, the tilting movement of the second control assembly 7 increases the space for the user to enter and exit the cab. The locking pin 7.7 can engage with the corresponding tilting limit groove 7.10 when the second control assembly 7 moves to the target posture, forming a locked state. Once the locking pin 7.7 disengages from the tilting limit groove 7.10, the second control assembly 7 can continue to move along the guide groove 7.9, achieving flexible posture changes. When the second control assembly 7 moves to the target posture, the locking pin 7.7 slides in the guide groove 7.9 and eventually engages with the tilting limit groove 7.10. This process not only ensures that the second control assembly 7 is stable in the required posture, but also effectively prevents posture changes caused by external interference through mechanical means, thus playing the role of posture locking. When a posture change is required, after removing the locking pin 7.7 from the tilting limit groove 7.10, it can move further along the guide groove 7.9 to achieve posture change. This design not only improves the safety and stability of mechanical operation, but also enhances the flexibility and reliability of the equipment in different application scenarios.

[0034] In some embodiments, the angle adjustment bracket assembly 3 includes a first support plate assembly 3.1, a linkage rod assembly 3.2, a second connecting rod assembly 3.3 connected to the first support plate assembly 3.1, a bracket base 3.4, a fourth connecting rod assembly 3.5 connected to the first support plate assembly 3.1, a second support plate assembly 3.6, and a lead screw motor 3.7; the first operating assembly 6 and the second operating assembly 7 are respectively connected to the first support plate assembly 3.1 and the second support plate assembly 3.6 in a one-to-one correspondence; the linkage rod assembly 3.2 is connected to the bracket base 3.4 through a pressure plate 3.4.2, and the lead screw motor 3.7 is connected to the bracket base 3.4. It can be understood that the angle adjustment bracket assembly 3 includes a first support plate assembly 3.1, a linkage rod assembly 3.2, a second connecting rod assembly 3.3, a bracket base 3.4, a fourth connecting rod assembly 3.5, a second support plate assembly 3.6, and a lead screw motor 3.7. Each component is linked and cooperated through pins and bushings. The linkage rod assembly 3.2 is fixed to the bracket base 3.4 through the left and right side pressure plates 3.4.2. The linkage rod assembly 3.2 can rotate axially through the circular space in the pressure plates 3.4.2. The lead screw motor 3.7 is installed on the side of the bracket base 3.4 and is the power source for angle adjustment. The connection between the second support plate assembly 3.6 and the fourth connecting rod assembly 3.5 and the connection between the first support plate assembly 3.1 and the second connecting rod assembly 3.3 are symmetrically arranged. Together, they realize the synchronous angle adjustment of the left and right control boxes, ensuring the symmetry and stability of operation. The first control assembly 6 and the second control assembly 7 are bolted to the first support plate assembly 3.1 and the second support plate assembly 3.6 on both sides of the angle adjustment bracket assembly 3 of the control box. This allows for adjustment of the angles of the first support plate assembly 3.1 and the second support plate assembly 3.6, while simultaneously adjusting the first control assembly 6 and the second control assembly 7. An unequal-sided linkage mechanism is used to achieve angle adaptation adjustment in various scenarios; simultaneously, an integrated lead screw motor is used as the power source, replacing the existing manual adjustment mechanism, ensuring adjustment accuracy and response speed, and improving operational convenience.

[0035] In some embodiments, the first pallet assembly 3.1 includes a bushing 3.1.1, a sleeve 3.1.2, and a limiting sleeve 3.1.3. The bushing 3.1.1 passes through the sleeve 3.1.2 and is hinged to an external component via a pin; the limiting sleeve 3.1.3 is sleeved on the pin. It can be understood that, as Figure 5 , Figure 6As shown, the first support plate assembly 3.1 includes bushing 3.1.1, sleeve 3.1.2, and limiting sleeve 3.1.3, all of which serve as connecting carriers for the first operating assembly 6. The sleeve 3.1.2 provides axial support. Four bushings 3.1.1 symmetrically insert into the front and rear sleeves 3.1.2 and are bolted to the first pin 3.2.2 and the second pin 3.3.2 respectively, achieving hinged movement with external components. The limiting sleeves 3.1.3 are fitted onto the second pin 3.3.2, limiting the lateral width.

[0036] In some embodiments, the linkage assembly 3.2 includes a first connecting rod 3.2.1, a first pin 3.2.2, a third connecting rod 3.2.3, a linkage rod 3.2.4, a second connecting rod 3.2.5, a lead screw drive sleeve 3.2.6, and a limiting ring 3.2.7. The first pin 3.2.2 is connected to the first connecting rod 3.2.1. The linkage rod 3.2.4 passes through the first connecting rod 3.2.1, the second connecting rod 3.2.5, and the third connecting rod 3.2.3 to form a linkage structure. The limiting ring 3.2.7 is connected to the linkage rod 3.2.4 by a fixing pin. The lead screw drive sleeve 3.2.6 is located between the first connecting rod 3.2.1 and the second connecting rod 3.2.5. The lead screw motor 3.7 passes through the lead screw drive sleeve 3.2.6. It can be understood that... Figure 6 As shown, the first pin 3.2.2 is welded to the first connecting rod 3.2.1; the first connecting rod 3.2.1 and the second connecting rod 3.2.5 pass through the linkage rod 3.2.4 and are welded in parallel to each other, forming a coaxial rotating linkage mechanism, which is the key carrier connecting the lead screw motor 3.7 with other transmission components. Figure 8 As shown, linkage 3.2.4 passes through first linkage 3.2.1, second linkage 3.2.5, and third linkage 3.2.3 to form a welded assembly, synchronously transmitting power from the right side to the left side. A limiting ring 3.2.7 is mounted on linkage 3.2.4 via a fixing pin, restricting the left and right sliding of linkage assembly 3.2. A lead screw drive sleeve 3.2.6 is installed between first linkage 3.2.1 and second linkage 3.2.5, allowing axial movement; its central hole contains a threaded coil. Figure 6As shown, the lead screw on the lead screw motor 3.7 passes through the lead screw transmission sleeve 3.2.6, realizing the conversion from rotary motion to linear motion. During the process of driving the linkage assembly 3.2, the lead screw transmission sleeve 3.2.6 will rotate along the rotation axis 3.7.1 of the lead screw motor, matching the change of the intersection point when converting from rotary motion to linear motion. Through the hinged motion of each link and pin, the first support plate assembly 3.1, the second support plate assembly 3.6, and the two control boxes on both sides can achieve various angle changes such as tilting upward, horizontal, and downward, adapting to different working scenarios. More specifically, through the coordinated design of the wheelbases a, b, c, and d, with a as the baseline, the ratio a:b:c:d presents a non-uniform relationship, which can be selected as 1:5:6:2. The wheelbase a between the second pin 3.3.2 and the third pin 3.4.1 serves as the basic hinge wheelbase of the linkage mechanism, determining the motion constraint range of the second link 3.2.5 assembly. The wheelbase b between the first pin 3.2.2 and the linkage 3.2.4 forms an unequal-length transmission arm with the wheelbase a, causing the linkage 3.2.4 to produce non-linear angle changes during movement. The first angle α between the first link 3.2.1 and the horizontal is 5°, 27°, and 60° when the control box is tilted upwards, horizontally, and downwards, respectively. Through the structural layout of the unequal-length links and the proportional angle constraints, precise angle adjustment of the control box is achieved. The three pivot points of the first connecting rod 3.2.1 are arranged in a triangle. The ratio of its wheelbase d to the wheelbase e of the connecting rod 3.2.4 and the lead screw drive sleeve 3.2.6 is 1:2. The wheelbase d and wheelbase e form a second included angle β. Through this lever-like layout, the lead screw motor 3.7 can effectively transmit torque output.

[0037] In some embodiments, the operation command input module includes an angle adjustment control switch 1.4. The control module pre-stores seated multi-joint coordinates corresponding to various work scenarios obtained based on a human joint model. In response to the triggering of the angle adjustment control switch 1.4, the control module calls the seated multi-joint coordinates corresponding to the work scenario and drives the flip adjustment module to flip the control box to the seated multi-joint coordinates. It can be understood that, as Figure 4 As shown, the angle adjustment control switch 1.4 is a self-resetting switch, installed on the upper housing of the first control assembly 6, in a position easily accessible to the operator when near the seat back. It is connected to the control module. Because it can quickly recall the corresponding seated multi-joint coordinates for different operating scenarios, it drives the tilt adjustment module to tilt the control box to the seated multi-joint coordinates, thus precisely adjusting the control box's posture and improving driver comfort and operational efficiency. Specifically, when the operator needs to adjust the control box's posture in different operating scenarios, they can input the corresponding command using the angle adjustment control switch. The control module will then recall the corresponding seated multi-joint coordinates stored in the module. Subsequently, the tilt adjustment module controls the control box to precisely tilt according to these coordinate data until the target position is reached. Example

[0038] This embodiment provides an excavator, wherein the electric control system is configured with multiple working scenarios; the operation commands include working scenario switching commands; the seat memory module stores the working scenarios and the seat surface assembly 4 posture matching the working scenarios; the control module is signal-connected to the seat memory module; the control module is further configured to, in response to receiving a working scenario switching command input by the operation command input module, obtain the seat surface assembly 4 posture matching the target working scenario by calling the seat memory module, and control the seat surface assembly 4 to switch to the seat surface assembly 4 posture. It is understood that those skilled in the art can integrate existing passenger car driver's seat memory modules to associate the control box angle matching different working scenarios of the driver with the comfortable posture of the seat surface assembly 4. When the driver adjusts due to work procedures, the adaptive pitch angle of the control box can be adjusted with one click. If the seat surface assembly 4 needs adjustment, a separate seat adjustment command can be issued. The system recognizes the state of the control box and automatically matches the posture corresponding to the seat surface assembly 4 preset by the driver, thereby reducing driver muscle fatigue and improving driving comfort, thus enhancing the safety and reliability of long-term work. Example

[0039] like Figure 1-3 As shown, this embodiment provides a control method for an electric control system. This control method can be implemented by the electric control system in Embodiment 1, and specifically includes the following steps: The control module responds to the operation command input by the operation command input module, determines the target position state of the control box, and generates a corresponding action execution control command so that the flip adjustment module drives the angle adjustment bracket assembly 3 to move according to the action execution control command, thereby driving the control box to rotate to the target position state; like Figure 2 As shown, based on the various work scenarios required at the construction site, such as excavation, bulldozing, and demolition, work scenario units are defined. Through the analysis of typical excavator operation processes, the scenarios are divided into rest scenarios, excavation operation scenarios, and bulldozing operation scenarios. Using existing motion capture systems, the relative positions of the driver's shoulder joint R1, thigh joint R2, calf joint R3, ankle joint R4, elbow joint R5, wrist joint R6, and palm point R7 are monitored in real time to obtain three typical working postures for the driver in rest scenarios, excavation operation scenarios, and bulldozing operation scenarios. Based on this joint data, a human joint model is constructed, and three typical states of the elbow rest and handle are constructed using 3D software.

[0040] The scene matching module outputs adaptation strategies for different scenes: Scenario D1 (Rest Scenario): The seat back and control box are tilted back, and the elbow rest is moved down to adapt to the driver's relaxed posture, corresponding to posture A1; Scenario D2 (Mid-position scenario): The seat back and control box are in the middle position, the elbow rest is in the center, which meets the needs of normal operation and corresponds to posture B1. Scene D3 (Bulldozing operation scene): The seat back and control box are tilted forward to match the hand outstretched operation posture during bulldozing operations, corresponding to posture C1.

[0041] Based on the overlap of posture models A1, B1, and C1, the movement trajectory of the control box is plotted to confirm its compatibility with the three scenarios mentioned above. A flip adjustment module is required for adaptation. For entry and exit scenario adaptation, the driver's entry and exit space is checked based on the scenario requirements to determine the appropriate upward tilt position of the control box. A flip adjustment module is designed to facilitate the convenient tilting of the control box during entry and exit scenarios, expanding the cab's passage space. The posture model status data is then entered into the control box to allow the driver to quickly switch to a comfortable posture suitable for the work scenario. The control box is also equipped with a status feedback unit to promptly alert the driver when errors occur, allowing for adjustments. More specifically, the status feedback unit can use common indicator lights of different colors or voice announcements, but is not limited to these.

[0042] The operation instructions include work scenario switching instructions.

[0043] Upon receiving a switching command from the driver, the tilt adjustment module first unlocks the seat via the guide limit unit. Simultaneously, it sends a target posture switching command to the angle adjustment bracket assembly. The posture adjustment execution unit then drives the control box to rotate to the target position and locks it in that posture to ensure the driver's safe operation. The control box can be manually adjusted by the driver to change to a suitable elbow rest posture, or it can be connected to an external control system. This system automatically adjusts the posture of the control box and the driver's seat synchronously with changes in the work scenario. The tilt adjustment module self-locks after the seat posture is adjusted to ensure the driver's safety and stability during operation.

[0044] In summary, the control method of the electric control system provided in this embodiment, through the synergistic effect of the flip adjustment module and the angle adjustment bracket assembly, provides graded drive to ensure that the driver can easily and quickly adjust the control box to the target posture when switching work scenarios, thereby reducing muscle fatigue of the driver during long-term work and ensuring the safety and stability of the operation.

[0045] Working principle: like Figure 9As shown, when the right control box 1 and the left control box 2 are in a horizontal state B2, the lead screw motor 3.7 drives the linkage assembly 3.2 to rotate upward along the axis of the linkage 3.2.4, which drives the hinge movement of the first link 3.2.1 and the second link 3.2.5, thereby driving the first and second support plate assemblies 3.6 and the first and second control assemblies 7 to achieve the upward tilting state A2 of the control box.

[0046] When the right control box 1 and the left control box 2 are in a horizontal state B2, the lead screw motor 3.7 drives the linkage assembly 3.2 to rotate downward along the axis of the linkage 3.2.4, which drives the hinge movement of the first link 3.2.1 and the second link 3.2.5, thereby driving the first support plate assembly 3.1, the second support plate assembly 3.6, the first control assembly 6, and the second control assembly 7 to achieve the downward tilting state C2 of the control box.

[0047] The angle adjustment limiting groove 3.4.3 on the bracket base 3.4 limits the movement of the second connecting rod 3.2.5, thereby limiting the angle adjustment range.

[0048] The flipping of the control box is divided into three stages: unlocking, flipping, and limiting. Taking the second control assembly 7 of the left control box 2 as an example, Figure 12 , 13 As shown, the specific process is as follows: Unlocking Phase: By operating the unlocking handle 7.1, the latch unlocking flexible shaft (7.4) triggers the latch mechanism 7.3 to unlock, and simultaneously the gas spring unlocking flexible shaft 7.5 releases the locking state of the self-locking gas spring 7.2. After unlocking, the self-locking gas spring 7.2 will slowly release pressure on its own, lifting the housing automatically. The unlocking handle 7.1 is positioned so that the operator can easily reach it while leaning against the seat back, allowing for easy operation without moving the handle, thus improving the convenience of the flipping operation.

[0049] Flipping stage: After the self-locking gas spring 7.2 is unlocked, it slowly releases pressure, pushing the left and right control boxes to flip automatically around the flipping axis 7.6; the guide wheel moves along the flipping limit groove 7.10, which restricts the entire range of motion. The guide wheel is made of nylon, which avoids metal-to-metal friction during movement, ensuring a smooth flipping trajectory without abnormal noise.

[0050] Limiting and resetting phase: When the control box is flipped to its maximum angle, the flipping limit groove 7.10 restricts its continued rotation; when the control box is nearing the end of its resetting to a horizontal state, the guide wheel positions the box body through the resetting guide groove 7.9. When the control box reaches a horizontal state, the trigger latch mechanism 7.3 automatically engages the locking pin 7.7, and also plays an auxiliary positioning role, ensuring the structural stability of the entire resetting process.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "up," "down," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing the invention and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0052] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An electrically powered steering system, characterized in that The operation box comprises a control box with a control module, an operation instruction input module connected with the control module, an angle adjustment support assembly (3) connected with the control box, and a turnover adjustment module arranged in the control box. The operation instruction input module is used for receiving the operation instruction input by a user. The control module is used for determining a target position state of the operation box according to the operation instruction and generating a corresponding action execution control instruction. The turnover adjustment module is connected with the angle adjustment support assembly (3) and is used for driving the angle adjustment support assembly (3) to move according to the action execution control instruction, so as to drive the control box to rotate to the target position state.

2. The electrically powered steering system of claim 1, wherein: The turnover adjustment module comprises a posture adjustment execution unit and a guide limiting unit, the posture adjustment execution unit is used for driving the control box to rotate around an axis, and the guide limiting unit can selectively lock or unlock the current posture of the control box. When the posture adjustment execution unit drives the control box to rotate to the target position state, the guide limiting unit is synchronized or correspondingly matched to realize the locking of the control box in the target position state and to release the locking to allow the control box to continue to rotate when the posture needs to be adjusted.

3. The electrically powered steering system of claim 2, wherein: The posture adjustment execution unit comprises an unlocking handle (7.1), a self-locking gas spring (7.2), a latch mechanism (7.3), a latch unlocking soft shaft (7.4), and a gas spring unlocking soft shaft (7.5). The control box comprises a first operation assembly (6) and a second operation assembly (7) arranged symmetrically with the first operation assembly (6), the second operation assembly (7) has opposite operation sides and execution sides. The unlocking handle (7.1) and the self-locking gas spring (7.2) are arranged on the operation side, and the latch mechanism (7.3) is correspondingly arranged on the execution side. The latch unlocking soft shaft (7.4) and the gas spring unlocking soft shaft (7.5) are connected with the unlocking handle (7.1) and extend from the operation side to the execution side to respectively transmit the operation force for unlocking the latch mechanism (7.3) and releasing the self-locking gas spring (7.2). The guide limiting unit comprises a lock pin shaft (7.7), a guide groove (7.9), and a turnover limiting groove (7.10), when the second operation assembly (7) moves to a target posture, the lock pin shaft (7.7) can be clamped into the corresponding turnover limiting groove (7.10) to form a lock, when the lock pin shaft (7.7) is withdrawn from the turnover limiting groove (7.10), the second operation assembly (7) resumes movement along the guide groove (7.9) to realize unlocking and posture transformation.

4. The electrically powered steering system of claim 3, wherein: The angle adjustment support assembly (3) comprises a first supporting plate assembly (3.1), a second supporting plate assembly (3.6), a linkage rod assembly (3.2), a support base (3.4), a second linkage rod assembly (3.3) connected with the first supporting plate assembly (3.1), a fourth linkage rod assembly (3.5) connected with the second supporting plate assembly (3.6), and a lead screw motor (3.7).

5. The electrically powered steering system of claim 3, wherein: ​ The first operating assembly (6) and the second operating assembly (7) are connected with the first supporting plate assembly (3.1) and the second supporting plate assembly (3.6) respectively; The linkage rod assembly (3.2) is connected with the support base (3.4) through a pressing plate (3.4.2), and the lead screw motor (3.7) is connected to the support base (3.4).

6. The electrically powered steering system of claim 5, wherein: The first supporting plate assembly (3.1) comprises a shaft sleeve one (3.1.1), a sleeve (3.1.2) and a limiting sleeve (3.1.3), the shaft sleeve one (3.1.1) penetrates the sleeve (3.1.2) and is hinged to external components through a pin shaft, and the limiting sleeve (3.1.3) is sleeved on the pin shaft.

7. The electrically powered steering system of claim 5, wherein: The linkage rod assembly (3.2) comprises a first connecting rod (3.2.1), a first pin shaft (3.2.2), a third connecting rod (3.2.3), a linkage rod (3.2.4), a second connecting rod (3.2.5), a lead screw transmission sleeve (3.2.6) and a limiting ring (3.2.7), the first pin shaft (3.2.2) is connected to the first connecting rod (3.2.1), the linkage rod (3.2.4) penetrates the first connecting rod (3.2.1), the second connecting rod (3.2.5) and the third connecting rod (3.2.3) to form a linkage structure, the limiting ring (3.2.7) is connected to the linkage rod (3.2.4) through a fixing pin, the lead screw transmission sleeve (3.2.6) is arranged between the first connecting rod (3.2.1) and the second connecting rod (3.2.5), and the lead screw motor (3.7) penetrates the lead screw transmission sleeve (3.2.6).

8. The electrically powered steering system of claim 1, wherein: The operation instruction input module comprises an angle adjustment control switch (1.4), the control module pre-stores a plurality of working scene corresponding sitting posture multi-joint coordinates acquired based on a human joint model; in response to the angle adjustment control switch (1.4) being triggered, the control module calls the sitting posture multi-joint coordinates of the corresponding working scene and drives the turnover adjustment module to turn over the operating box to the sitting posture multi-joint coordinates.

9. An excavator characterized by comprising: The seat memory module, the seat surface assembly (4) and the electric operating system as claimed in any one of claims 1 to 8 are comprised; the electric operating system is configured with a plurality of working scenes; the operation instruction comprises a working scene switching instruction; The seat memory module stores the working scenes and the seat surface assembly (4) postures matched with the working scenes; The control module is signal connected with the seat memory module; The control module is further used for, in response to receiving the working scene switching instruction input by the operation instruction input module, acquiring the seat surface assembly (4) posture matched with the target working scene through the seat memory module and controlling the seat surface assembly (4) to switch to the seat surface assembly (4) posture.

10. A control method of an electrically operated control system based on the electrically operated control system according to any one of claims 1 to 8, characterized by, The control method comprises the following steps: The control module determines a target position state of the operating box in response to receiving an operation instruction input by the operation instruction input module, and generates a corresponding action execution control instruction to drive the angle adjustment support assembly (3) to move according to the action execution control instruction, so as to drive the operating box to rotate to the target position state. The operation instruction includes a work scene switching instruction.

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