System for manually actuating pedals of a work vehicle, and work vehicle

Abstract

The present invention pertains to the field of equipment for work vehicles, specifically to a system for manually actuating vehicle pedals, comprising: an operator interface module (1), a brake and accelerator pedal actuator module (3), a brake and accelerator pedal interface module (4), and a clutch actuator module (5). The system is characterized in that it allows people with motor limitations of the lower limbs to drive the vehicle, the pedals being controlled by means of a joystick (11) interconnected to servomechanisms that actuate the pedals of the vehicle. The present invention also relates to a work vehicle (10) provided with said system for manually actuating pedals.

Description

MANUAL PEDAL DRIVE SYSTEM OF A WORK VEHICLE AND WORK VEHICLE FIELD OF INVENTION

[0001] The present invention belongs to the field of equipment for work vehicles, more specifically it refers to a system for manually operating vehicle pedals, enabling the vehicle to be driven by people with motor limitations in their lower limbs, as well as to a vehicle equipped with said system. The system comprises a pedal control performed by means of an electronic joystick-type handle interconnected to servomechanisms that operate the vehicle's pedals, moving it according to the commands given by the operator. BACKGROUND OF THE INVENTION

[0002] This section is intended to introduce the reader to various aspects of the art that may relate to various aspects of the present disclosure, which are described below. It is believed that this discussion will be useful in providing the reader with background information to facilitate a better understanding of the various aspects of the present disclosure. Consequently, it should be understood that these statements should be read in this light, and not as admissions of prior art.

[0003] Some types of work vehicles that include joystick controls for their movement, such as implements or auxiliary equipment, are known in the state of the art. The controls usually allow the operator to move the agricultural implements so that they remain in contact with the soil, for activities such as plowing or harvesting, and, if desired, to remove the equipment from contact with the soil. One drawback of these systems is... Restricting the use of controls to implements or auxiliary equipment only, requiring the use of accelerator, brake, and clutch pedals to control the tractor that moves said implement or auxiliary equipment.

[0004] Patent document GB2366854 describes a tractor seat with a joystick control attached to an arm on the side of the seat. The joystick control can be moved up and down to allow the operator to sit in and out of the seat more easily, thus reducing limitations in their movement. However, the control provided by the joystick in this prior art document is limited to controlling the movement of the agricultural implement only; pedals are necessary to drive the tractor. Therefore, people with motor limitations in their lower limbs would not be able to operate the tractor due to the need to use pedals.

[0005] Patent document US2013204499 describes a tracked tractor that integrates hydraulic control of its leveling blade, enabling lifting, tilting, and angling via its joystick control. However, this solution presents the same limitation as the previously presented prior art equipment, where joystick control is limited to auxiliary equipment or implements. Furthermore, it only offers hydraulic control of the mechanisms, making it expensive and requiring a large space for installation.

[0006] Thus, it is evident that there is a lack of state-of-the-art solutions that provide a possibility of complete control of a vehicle's movement, such as a tractor, without requiring... Using the feet to operate the pedals, especially for acceleration, braking, and clutch control, means that the state of the art lacks solutions aimed at accessibility for people with reduced mobility in their lower limbs when driving work vehicles. DESCRIPTION OF THE INVENTION

[0007] This summary is provided to present a selection of concepts that are described below in the detailed description. This summary is not intended to identify the main or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of the claimed subject matter.

[0008] In general terms, the present invention relates to a system for manually operating the pedals of a work vehicle, and a work vehicle equipped with said system, in order to enable a vehicle to be fully operated by drivers with reduced mobility in their lower limbs, effectively overcoming the limitations of the prior art.

[0009] In one embodiment, the system for manually operating the pedals of a work vehicle of the present invention comprises: an operator interface module; a brake and accelerator pedal actuation module; an interface module with the brake and accelerator pedals; and a clutch actuation module.

[0010] In a further embodiment, a work vehicle equipped with said manual drive system comprises: an operator interface module located in a hinged armrest in the vehicle cab, near the operator's seat; a brake and accelerator pedal drive module located in an area between two columns of a rollover protection structure; An interface module for the brake and accelerator pedals is located on the vehicle floor, passing under the operator's seat; and a clutch actuation module is located on the lower portion of the vehicle's steering column. BRIEF DESCRIPTION OF THE FIGURES

[0011] These and other functions, features and advantages of the present description will be better understood when the following detailed description is read with reference to the accompanying drawings, in which similar features represent similar parts throughout the drawings, in which: Figure 1 is a side view of an embodiment of a work vehicle that can employ a manual pedal drive system, according to the present disclosure; Figure 2 is a rear perspective view of a work vehicle equipped with a manual pedal drive system, according to the present disclosure; Figure 3 is a front perspective view of the work vehicle of Figure 2, according to the present disclosure; Figure 4 is a perspective view of an embodiment of the operator interface module, which comprises the manual pedal actuation system of a work vehicle, according to the present disclosure; Figure 5 is an illustrative representation of the directions that can be used in an electronic joystick-type handle to generate operating commands for the manual pedal actuation system of a work vehicle, according to the present disclosure; Figure 6 is a perspective view of an embodiment of the brake and accelerator pedal actuation module, which comprises the system of manual operation of pedals on a work vehicle, according to the present disclosure; Figure 7 is a perspective view of an embodiment of the interface module with the brake and accelerator pedals, which comprises the manual pedal actuation system of a work vehicle, according to the present disclosure; and Figure 8 is a perspective view of an embodiment of the clutch actuation module, which comprises the manual pedal actuation system of a work vehicle, according to the present disclosure. DESCRIPTION OF EMBODIMENTS OF THE INVENTION

[0012] One or more specific embodiments of the present disclosure will now be described. In an effort to provide a concise description of these embodiments, all features of an actual implementation may not be described in the specification. It should be noted that in the development of any such actual implementation, as in any engineering or design project, numerous specific implementation decisions must be made to achieve the developers' specific goals, such as compliance with business-related and system-related constraints, which may vary from one implementation to another. Furthermore, it should be noted that such a development effort may be complex and time-consuming, but would nevertheless be a routine design, fabrication, and production task for those of ordinary skill who have the benefit of this disclosure.

[0013] As used herein, the term "coupled" or "coupled to" may indicate the establishment of a direct or indirect connection and is not limited to either, unless expressly referred to as such. The term "set" may refer to one or more items. Whenever possible, same or identical reference numerals are used in the figures to identify common or identical elements. The figures are not necessarily to scale, and certain features and views of the figures may be shown at an exaggerated scale for clarity.

[0014] Furthermore, when introducing elements of various embodiments of the present disclosure, the articles "a," "an," "the," and "a" are intended to mean that there is one or more of the elements. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements beyond the elements listed. Additionally, it should be understood that references to "a (numeral) embodiment" or "an (indefinite article) embodiment" of the present disclosure are not intended to be construed as excluding the existence of additional embodiments that also incorporate the recited features. Furthermore, the phrase A "based on" B is intended to mean that A is at least partially based on B. Furthermore, unless expressly stated otherwise, the term "or" is intended to be inclusive (e.g., logical OR) and not exclusive (e.g., logical XOR). In other words, the phrase A "or" B is intended to mean either A, B, or both A and B.

[0015] With the foregoing in mind, Figure 1 is a side view of an embodiment of a work vehicle 10 that may employ a manual pedal drive system according to the present invention. The work vehicle 10 may be any suitable type of loader, tractor, grader, backhoe, forklift, agricultural vehicle or any other suitable work vehicle that uses pedals to operate acceleration, brake or clutch controls. The work vehicle 10 has A body 12 that can house an engine, transmission, and powertrain. In addition, the work vehicle 10 has a cab 14 where an operator can sit to operate the work vehicle 10. The work vehicle 10 has front wheels 16 and rear wheels 18 that rotate along the ground. The engine of the work vehicle 10 can drive the front wheels 16 and / or the rear wheels 18, the movement of which is controlled by the operation of accelerator and brake pedals, and may also include a clutch pedal for controlling the transfer of engine torque to the vehicle's drive wheels. For example, a complete gearbox transmission system can transfer power from the engine to the front wheels 16 and / or the rear wheels 18.Although the work vehicle 10 includes two front wheels 16 and two rear wheels 18 in the illustrated embodiment, in other embodiments, the work vehicle may include any suitable number of front wheels (e.g., 2, 4, etc.) and any suitable number of rear wheels (e.g., 2, 4, etc.). Furthermore, in certain embodiments, the work vehicle may include one or more sets of transmission-driven tracks. For example, the work vehicle may include rear tracks in place of the rear wheel.

[0016] Figures 2 and 3 illustrate a work vehicle 10 equipped with the manual pedal actuation system of a work vehicle 10 of the present invention. The said system essentially comprises: an operator interface module 1; a brake and accelerator pedal actuation module 3; a brake and accelerator pedal interface module 4; and a clutch actuation module 5. These modules, their functions, and the mode of interaction between them will be detailed below.

[0017] Starting from the interface module with operator 1, this This module is responsible for receiving manual commands from the operator and generating signals to be processed by other modules, in order to execute commands to operate the vehicle's accelerator, brake, and clutch pedals.

[0018] In one embodiment, the operator interface module 1 comprises an electronic joystick-type handle 11, which is configured to generate and send command signals to the brake and accelerator pedal actuation module (3) and to the clutch actuation module (5), so that, depending on the movement and / or command employed by the operator on the electronic handle 11, a corresponding signal is generated and sent to the respective module responsible for imposing a movement command on the appropriate pedal of the work vehicle 10.

[0019] Thus, in one embodiment, it is foreseen that the command signal generated and sent by the electronic control 11 ensures proportionality in relation to the direction and intensity of movement employed by the vehicle operator on the electronic control 11, enabling greater precision and control of the commands, since the gradual or partial activation of each of the vehicle's pedals 10 is made possible by the operator's manual control, thus guaranteeing, in addition to greater comfort and smooth driving, greater safety for the operator and everyone around the vehicle.

[0020] A representation of an embodiment of the electronic control stick 11 is shown in Figure 4, in which it is possible to visualize a "joystick" type lever, capable of being articulated in the longitudinal (Y-axis) and / or transverse (X-axis) direction, that is, the command signal generated by the electronic control stick 11 is capable of combining the movement signal of the control stick. Electronic control 11 in two directions, generating multiple command signals. Furthermore, electronic control 11 may also include buttons for activating auxiliary / complementary commands to the movement applied to electronic control 11, as will be detailed later.

[0021] It is also noteworthy, as can be seen from the representation in Figure 5, that, as already mentioned, the electronic control stick can be articulated both in the longitudinal direction (Y-axis) and in the transverse direction (X-axis). In one embodiment, it is defined that moving the electronic control stick 11 in a longitudinal direction forward activates the vehicle's brake, moving the electronic control stick 11 in a longitudinal direction backward activates the vehicle's accelerator, and moving the electronic control stick 11 in a transverse direction to the right activates the vehicle's clutch. It should be noted that different definitions can be easily employed through simple programming of the control modules of the system of the present invention.

[0022] Referring again to Figure 4, an embodiment is presented in which the electronic control stick 11 is installed on an articulated armrest 115, located in the vehicle cab 10 near the operator's seat. This arrangement, in addition to providing favorable ergonomics for the operator, also allows for greater convenience in entering and exiting the vehicle, due to the fact that the articulated armrest 115 can be moved to free up the passage area for access to the operator's seat.

[0023] In one embodiment, the electronic control stick 11 comprises buttons 112, 113, and 114 for actuating auxiliary / complementary commands to the movement imposed on the electronic control stick 11, such that the combination of pressing each of these buttons with The input of certain movements to the electronic control stick 11 results in the execution of a predetermined action on the vehicle's pedals 10.

[0024] In one embodiment, a first button 112 is located on the front portion of the electronic control 11 and, when pressed, emits a signal that allows the accelerator pedal 41 to be released. Thus, by combining the pressing of the first button 112 with a longitudinal backward movement of the electronic control 11, the vehicle's accelerator pedal 10 is gradually activated depending on the intensity of movement applied to the electronic control 11. Therefore, the first button 112 functions as a safety device, ensuring that the vehicle 10 only has its accelerator pedal activated when the operator actually intends to move the vehicle 10.

[0025] Regarding the second button 113 and the third button 114, in one embodiment both are located on the upper portion of the electronic control 11 and act as indicators of which brake should be applied. It is important to highlight that work vehicles 10, such as tractors, commonly comprise two brake pedals, with a first brake pedal 421 responsible for applying only the brake to the right rear wheel and a second brake pedal 422 responsible for applying only the brake to the left rear wheel, as shown in Figure 7. This individualization of the rear brake application for each wheel has a particular advantage in improving the maneuverability of the vehicle 10, allowing for tighter turns than would be possible with just steering the wheel.

[0026] Thus, in one embodiment, when pressing the second button 113 is combined with moving the electronic control stick 11 longitudinally forward, a command is generated for that only the right rear wheel brake is activated. Specifically, an activation signal is generated only for the first brake pedal 421, which is responsible for activating the right rear wheel brake. Similarly, when the third button 114 is pressed in conjunction with the longitudinal forward movement of the electronic control stick 11, a command is generated to activate only the left rear wheel brake, thus generating an activation signal only for the first brake pedal 422, which is responsible for activating the left rear wheel brake.

[0027] In one embodiment, moving the electronic control stick forward without pressing either button 113 or 114 results in the generation of a signal to activate the vehicle's brakes fully; that is, a signal is generated to activate the first brake pedal 421 and the second brake pedal 422 simultaneously. Obviously, the same effect is achieved if the operator presses both buttons 421 and 422 along with moving the electronic control stick 11 forward.

[0028] Referring to Figure 6, an embodiment of the brake and accelerator pedal actuation module 3 is represented, comprising a structure 32 that houses a set of servomechanisms, namely: a first servomechanism 311 that is responsible for actuating the accelerator pedal 41 of vehicle 10; a second servomechanism 312 that is responsible for actuating the brake pedal of the right rear wheel 421 of vehicle 10; and a third servomechanism 313 that is responsible for actuating the brake pedal of the left rear wheel 422 of vehicle 10.

[0029] The brake and accelerator pedal actuation module 3 receives command signals obtained from the interface module. with operator 1 and converts the received signals into commands to servomechanisms 311, 312 and 313, each of which is associated with a steel cable 44. Thus, upon receiving an actuation signal, each of the servomechanisms 311, 312 and 313 applies or removes tension to a respective steel cable 44.

[0030] As can be seen in Figure 7, in one embodiment the interface module with the brake and accelerator pedals 4 comprises three steel cables 44, which comprise a first end associated with each of the three servomechanisms 311, 312, 313 of the brake and accelerator pedal actuation module 3 and a second end associated with each of the accelerator pedals 41, right wheel brake pedal 412 and left wheel brake pedal 413.

[0031] Thus, the actuation of servomechanisms 311, 312, 313 results in the application or release of traction on the steel cables 44 which, consequently, impose movement on the pedals 41, 421 and 422 of the vehicle.

[0032] In one embodiment, the second end of the steel cables 44 are connected to chains which, in turn, are connected to the pedals 41, 421 and 422 of the vehicle. The use of chains is particularly advantageous in ensuring better operation of the pedals when the vehicle is used conventionally, i.e., using the feet to operate them, without, however, impairing operation through the manual operation system of the present invention. In this way, the adaptation to the vehicle 10 becomes more versatile and the use of both the conventional mode and the accessibility mode becomes practical and without the need to assemble and disassemble adapters.

[0033] As shown in Figure 7, in one embodiment the The interface module with the brake and accelerator pedals 4 consists of a base 45 that is mounted on the vehicle floor 10, below the operator's seat, so that steel cables 44 pass under the base 45 to reach the pedals 41, 421 and 422. Thus, the passage of the steel cables 44 does not interfere with the operator's ergonomics and they are easily installed in the vehicle 10 without the need for major adaptations, allowing the maintenance of the original characteristics of the vehicle 10.

[0034] This arrangement is also made possible by the fact that, in one embodiment, the brake and accelerator pedal actuation module 3 is located in a region behind the operator's seat, specifically between two columns 21 of a rollover protection structure of the vehicle 10, as can be seen in the representations of Figures 2 and 3. In particular, Figure 3 also illustrates an embodiment of the work vehicle 10 comprising the brake and accelerator pedal interface module 4 mounted on the vehicle floor, the user interface module 1 being located on an articulated armrest 115, next to the operator's seat, and the clutch actuation module 5 mounted on the lower portion of the vehicle's steering column 10.

[0035] With regard to the clutch actuation module 5, in an embodiment as shown in Figure 8, this module comprises an actuator 51 and a potentiometric controller 52, wherein the actuator 51 receives a signal to actuate the clutch pedal and moves gradually, its displacement position (and consequently the travel position of the clutch pedal) being controlled by means of a potentiometric controller 52.

[0036] This precise control of the clutch pedal position is particularly important to ensure a smooth, jerk-free ride. There are jolts during clutch pedal release. Disengaging the clutch is critical, as it can cause discomfort to the operator or even stall the engine due to abrupt disengagement. Therefore, an optimized clutch engagement and disengagement curve is implemented to ensure smooth operation. The potentiometric transducer allows the implementation of a position control loop for clutch engagement.

[0037] In one embodiment, actuator 51 is of the electrically driven type, potentiometric controller 52 is a potentiometric transducer, and clutch actuation module 5 further comprises a limit switch control.

[0038] The clutch actuation module 5 also includes a limit switch for controlling the limit positions of the clutch pedal travel.

[0039] Finally, in one embodiment, the system of the present invention comprises a control module 2 that receives signals: from the position of the accelerator pedal 41, the brake pedals 421, 422 and / or the clutch pedal; from the actuation position of the servomotors 311, 312, 313; and from the dynamic behavior data of the vehicle 10 and, from the signals obtained, the control module 2 sends adjustment signals to the servomotors 311, 312, 313 and / or to the actuator 51, based on predetermined parameters of the dynamic driving behavior of the vehicle 10.

[0040] Thus, the position of the electronic control stick 11 is detected by the control module 2, which digitally transmits the position desired by the vehicle operator to a slave device. The slave device then activates a power driver for the servo motor (such as servo motors 311, 312, 313 and / or actuator 51) to reach the desired position. The position is transmitted via steel cables 44 and limit springs to the pedals. Thus, the The aforementioned operator interface module 1 is directly connected to a control unit 2, a brake and accelerator pedal actuation module 3, a brake and accelerator pedal interface module 4, and a clutch actuation module 5. Control unit 2 connects the modules, transmitting command signals and enabling manual control of the vehicle 10.

[0041] Optionally, the servomotor mechanisms 311, 312 and 313 can be replaced by a hydraulic system, replacing the electric system, performing the movement of the pedals when receiving commands generated by the electronic control 11.

[0042] In view of all the above, it has become evident that the solution proposed by the present invention enables people with limited mobility in their lower limbs to drive a vehicle, such as a tractor, without the need for assistance from others, due to the system of the present invention, which allows the vehicle's pedals to be operated without the need to use the feet.

[0043] Thus, the system for manually operating the pedals of a work vehicle 10 results in the following advantages and achieves the following technical effects on the drive mechanisms of the prior art: - Priory-of-the-art joystick control mechanisms only allow control of auxiliary equipment or agricultural implements connected to the tractor, requiring pedals and other controls for tractor movement. This is solved by the present invention through a joystick-controlled tractor movement system, with servomotors and four modules controlling acceleration, braking, and clutch; - Priory vehicles are operated using accelerator, brake, and clutch pedals, making it impossible for a person with reduced mobility in their lower limbs to drive a tractor, as they cannot operate the pedals to move the tractor. This is solved by the present invention through a system comprising actuation via a joystick control, replacing the need to operate the pedals, allowing acceleration, braking, and clutch actuation manually via the joystick by the operator; and The mechanism allows the vehicle to be used by people with or without mobility limitations. If the operator wishes to use the pedals and drive the vehicle in the usual way, no modifications to the vehicle are necessary, since the mechanism is simply attached to the vehicle without the need to remove any original equipment.

[0044] As used herein, the terms "inside" and "outside"; "up and down"; "high and low"; "up" and "down"; "above and below"; "inside" and "outside"; and other similar terms, as used herein, refer to positions relative to each other and are not intended to denote a particular direction or spatial orientation. The terms "couple," "coupled," "connect," "connection," "connected," "in connection with," and "connecting" refer to "in direct connection with" or "in connection with one or more intermediate elements or members."

[0045] The preceding description, for explanatory purposes, has been given with reference to specific realizations. However, the illustrative discussions above are not intended to be exhaustive or to limit the revelation to the precise forms revealed. Many modifications and variations are possible in view of from the teachings above. Furthermore, the order in which the elements of the methods described in this document are illustrated and described may be rearranged, and / or two or more elements may occur simultaneously.

[0046] The techniques presented and claimed herein are referenced and applied to tangible objects and concrete examples of a practical nature that demonstrably improve the present technical field and, as such, are not abstract, intangible, or purely theoretical. Furthermore, if any claims appended to the end of this descriptive report contain one or more elements designated as “means for performing (the performance of) [a function]…” or “step for performing (the performance of) [a function]…”, such elements are intended to be interpreted in accordance with 35 USC 112(f). However, for any claims containing elements designated in any other way, such elements are not intended to be interpreted in accordance with 35 USC 112(f).

Claims

CLAIMS 1. System for manual operation of pedals of a work vehicle (10), CHARACTERIZED by the fact that it comprises: i) an interface module with the operator (1); ii) a module for operating brake and accelerator pedals (3); iii) a module for interfacing with the brake and accelerator pedals (4); and iv) a clutch operation module (5).

2. System, according to claim 1, CHARACTERIZED by the fact that the operator interface module (1) comprises an electronic joystick (11) configured to send command signals to: the brake and accelerator pedal actuation module (3); and the clutch actuation module (5).

3. System, according to claim 2, CHARACTERIZED by the fact that the command signal sent by the electronic handle (11) is proportional to the intensity of movement employed by the vehicle operator on the electronic handle (11).

4. System according to any one of claims 2 to 3, CHARACTERIZED by the fact that the command signal generated by the electronic handle (11) combines the movement signal of the electronic handle (11) in two directions.

5. System according to any one of claims 2 to 4, CHARACTERIZED by the fact that the electronic handle (11) is installed in an articulated armrest (115), arranged in the vehicle cabin (10) close to the driver's seat.

6. System, according to any one of claims 2 to 5, CHARACTERIZED by the fact that the electronic handle (11) comprises buttons (112, 113, 114) for sending additional command signals to: the brake and accelerator pedal actuation module (3).

7. System, according to any one of claims 2 to 6, CHARACTERIZED by the fact that the electronic handle (11) is adapted to comprise longitudinal (Y axis) and transverse (X axis) movement, wherein: - a movement of the electronic handle (11) in the longitudinal forward direction activates the vehicle's brake; - a movement of the electronic handle (11) in the longitudinal direction backwards activates the vehicle's accelerator; and - a movement of the electronic handle (11) in the transverse direction activates the vehicle's clutch.

8. System, according to any one of claims 6 to 7, CHARACTERIZED by the fact that the electronic handle (11) comprises three buttons, being: i) a first button (112) arranged in the front portion of the electronic handle (11), acting as a safety device and adapted to emit a signal to release the actuation of the accelerator pedal (41), when combined with the movement of the electronic handle (11) in the longitudinal direction backwards; ii) a second button (113) arranged in the upper portion of the electronic handle (11), acting as an actuator only for the brake of the right rear wheel, when combined with the movement of the electronic handle (11) in the longitudinal direction forwards; and iii) a third button (114) arranged in the upper portion of the electronic handle, acting as an actuator only for the brake of the left rear wheel, when combined with the movement of the electronic handle (11) in the longitudinal direction forwards.

9. System, according to claim 1, CHARACTERIZED by the fact that the brake and accelerator pedal actuation module (3) is comprised of a set of servomechanisms, being: - a first servomechanism (311) for operating the accelerator pedal (41) of the vehicle (10); - a second servomechanism (312) for operating the brake pedal of the right rear wheel (421); and - a third servomechanism (313) for operating the brake pedal of the left rear wheel (422).

10. System, according to claim 1, CHARACTERIZED by the fact that the interface module with the brake and accelerator pedals (4) comprises three steel cables (44), in which: the first end of each of the steel cables (44) is associated with each of the three servomechanisms (311, 312, 313) of the brake and accelerator pedal actuation module (3); and the second end of each of the steel cables (44) is associated with each of the respective pedals (41, 421, 422) of the vehicle (10).

11. System, according to claim 10, CHARACTERIZED by the fact that the second end of each of the steel cables (44) is associated with a chain, the chain being associated with each of the vehicle pedals (41, 421, 422).

12. System, according to claim 1, CHARACTERIZED by the fact that the clutch actuation module (5) comprises: - an actuator (51); and - a potentiometric controller (52).

13. System, according to claim 12, CHARACTERIZED by the fact that the actuator (51) is of the electrical drive type and the potentiometric controller (52) is a potentiometric transducer, the module of clutch actuation (5) also comprising an end-of-stroke control.

14. System according to any one of claims 1 to 13, CHARACTERIZED by the fact that it comprises a control module (2), in which the control module (2) receives signals: - position of the accelerator pedal (41), brake pedals (421, 422) and / or clutch pedal; - servomotor drive position (311, 312, 313); and - vehicle dynamic behavior data (10), and sends adjustment signals to the servomotors (311, 312, 313) and / or to the actuator (51), based on predetermined vehicle dynamic driving behavior parameters (10).

15. Work vehicle (10) equipped with a system for manual pedal actuation as defined in claims 1 to 14, CHARACTERIZED by the fact that: i) an operator interface module (1) is arranged in a hinged armrest (115), in the vehicle cabin, close to the operator's seat; ii) a brake and accelerator pedal actuation module (3) is arranged in a region arranged between two columns (21) of a rollover protective structure; iii) a brake and accelerator pedal interface module (4) is arranged on the floor of the vehicle (10); and iv) a clutch actuation module (5) is arranged in the lower portion of the vehicle's steering column (10).

16. Vehicle (10), according to claim 15, CHARACTERIZED by the fact that the system for manual pedal operation is installed in the vehicle (10) without the need to change original characteristics and simultaneously enabling the operation of the vehicle's pedals in a conventional manner or through the manual pedal operation system.

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