Silicone oil clutch with transverse swing heat dissipation function

Abstract

The invention relates to a silicone oil clutch with a transverse swinging heat dissipation function, which belongs to the technical field of connecting devices between tractors and machinery and comprises a shell, auxiliary heat dissipation ribs, an auxiliary transmission gear, a main transmission gear, a driving motor, a motor fixing plate, a driving gear, a driven gear, a temperature sensor, a valve plate, a driving disc, a working cavity, a driving shaft and main heat dissipation ribs. The gear set drives the main radiating ribs and the auxiliary radiating ribs to swing synchronously, the swing angle of the radiating ribs is controlled through a double-closed-loop PID algorithm, and the radiating effect is dynamically adjusted. Compared with a traditional fixed radiating rib, the radiating rib can quickly respond to different working conditions, optimize the cooling effect, ensure the viscosity stability of silicone oil, improve the performance of a clutch, prolong the service life of the clutch and reduce energy consumption, and is suitable for a cooling system of high-load mechanical equipment.

Description

Technical Field

[0001] The invention relates to the technical field of coupling devices between tractors and machines, in particular to a silicone oil clutch with a lateral swing heat dissipation function. Background Art

[0002] In recent years, with the increasing degree of agricultural mechanization, the performance and efficiency of agricultural machinery have been significantly improved. However, during the operation of agricultural machinery, the silicone oil fan clutch is a key component in the engine cooling system. Its main function is to adjust the fan operation state according to the engine cooling requirements to optimize heat dissipation efficiency and reduce energy consumption.

[0003] The silicone oil clutches currently used in the market can be divided into two categories: temperature-sensitive and electronically controlled. The temperature-sensitive silicone oil clutch relies on the deformation of a bimetallic temperature sensor to control the opening and closing of the silicone oil flow into the working chamber, thereby adjusting the operating state of the fan; the electronically controlled silicone oil clutch receives multiple signals such as engine temperature, intake temperature, and speed through the electronic control unit, and adjusts the opening and closing of the valve according to the real-time working conditions to achieve precise flow control of the silicone oil, so that the fan can dynamically adjust the speed according to engine requirements.

[0004] However, the silicone oil clutches currently available on the market still have certain limitations in terms of heat dissipation regulation. The heat dissipation ribs of traditional silicone oil fan clutches adopt a fixed structure and cannot be actively adjusted to adapt to different operating conditions, resulting in the heat dissipation capacity being completely dependent on passive airflow cooling. Under high-temperature conditions, the fixed heat dissipation ribs cannot actively enhance the heat dissipation efficiency, causing the silicone oil temperature to continue to rise, resulting in a decrease in its viscosity, weakening its torque transmission capacity, and affecting the transmission stability of the clutch. Under low-temperature conditions, because the heat dissipation ribs are continuously fixed, the heat dissipation intensity cannot be reduced, resulting in the silicone oil temperature being too low and the viscosity being too high, which hinders the engagement and disengagement of the clutch, increases power loss, and reduces the speed of system response. Summary of the Invention

[0005] In view of the shortcomings of the above-mentioned technology, the purpose of the present invention is to design a silicone oil clutch with lateral swing heat dissipation function to solve the problems in the existing technology that the heat dissipation ribs are fixed and cannot rotate, and it is difficult to dynamically adapt to the heat dissipation requirements under different working conditions of the engine.

[0006] To achieve the background technology purpose, the present invention adopts the following technical solutions:

[0007] A silicone oil clutch with a lateral swing heat dissipation function, characterized in that it comprises a housing (1), a secondary heat dissipation rib (2), a secondary transmission gear (3), a main transmission gear (4), a driving motor (5), a motor fixing plate (6), a driving gear (7), a driven gear (8), a temperature sensor (9), a driven disc (10), a valve plate (11), a driving disc (12), a working chamber (13), a driving shaft (14), a primary heat dissipation rib (15), and a positioning bolt (16); a small hole is formed at the bottom of the primary heat dissipation rib (15), and the primary heat dissipation rib (15) is connected to the housing (1) via the positioning bolt (16); the driving gear (7) meshes with the main transmission gear (4), and the secondary transmission gear (3) meshes with the driven gear (8); the driving shaft (14) is placed below the driving motor (5), and the driving motor (5) drives the driving gear (7) to rotate; the driven gear (8) rotates to adjust the swing angle of the secondary heat dissipation rib (2); the driving motor (5) is used to drive the driving gear (7); the temperature sensor (9) is located in the working chamber (13) formed between the driving disk (12) and the driven disk (10), and adjusts the rotation of the driving motor (5) according to the real-time silicone oil temperature through a double closed-loop PID algorithm.

[0008] Furthermore, the main transmission gear (4) and the driving gear (7) are meshed and driven to achieve swinging; the front end of the main heat dissipation rib (15) is connected to the driven gear (8) through the auxiliary transmission gear (3); when the driving gear (7) rotates, it drives the main transmission gear (4) to rotate synchronously, thereby driving the main heat dissipation rib (15); the front end of the auxiliary heat dissipation rib (2) is connected to the driven gear (8) through the auxiliary transmission gear (3); the driven gear (8) rotates under the drive of the main heat dissipation rib (15), and drives the auxiliary heat dissipation rib (2) to swing synchronously.

[0009] The present invention adopts dual closed-loop PID control to perform adaptive control of the swing angle of the main heat dissipation rib (15), thereby realizing adaptive adjustment of the heat dissipation rib; the dual closed-loop PID control includes a temperature loop and a current loop; the temperature loop outputs the desired swing angle of the main heat dissipation rib (15) through PID control according to the deviation between the desired temperature and the actual temperature of the silicone oil; the motor current determines the voltage of the drive motor (5) through PID control according to the deviation between the desired angle and the actual angle of the main heat dissipation rib (15), thereby realizing current closed-loop control, thereby realizing precise control of the heat dissipation rib angle. Further, the following implementation steps are included:

[0010] Step 1: The real-time silicone oil temperature detected by the temperature sensor in the working chamber The deviation from the set silicone oil temperature is used as input, and the expression is:

[0011] (1)

[0012] Step 2: the deviation As input, the temperature loop of the dual control loop PID algorithm generates the target swing angle of the main cooling rib, which is expressed as:

[0013] (2)

[0014] Where, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, It is the swing angle of the main heat dissipation rib (15).

[0015] Step three: the current loop drives the motor (5) through PID control to generate a corresponding output torque, thereby achieving precise swing control of the swing angle of the main heat dissipation rib (5).

[0016] The swing angle error:

[0017] (3)

[0018] Where, The target swing angle calculated for the temperature loop, is the current actual swing angle.

[0019] The current control loop calculates the required input current of the drive motor (5) through PID:

[0020] (4)

[0021] Where, For the drive electrical control voltage, is the proportional gain, is the integral gain, is the differential gain.

[0022] The motor input current The corresponding torque is generated:

[0023] (5)

[0024] Where, is the output torque of the driving motor (5), The torque constant of the drive motor; the output torque The transmission system acting on the heat dissipation ribs ensures the system has dynamic adaptability under different temperature conditions and achieves efficient heat dissipation control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an assembly diagram of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0026] Figure 2 This is a view of the power source of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0027] Figure 3 A cross-sectional view of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0028] Figure 4 This is a schematic diagram of a temperature sensor of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0029] Figure 5 This is a schematic diagram of a positioning pin of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0030] Figure 6 This is a schematic diagram of a large gear of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0031] Figure 7 This is a schematic diagram of the heat dissipation ribs of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0032] Figure 8 A schematic diagram of a servo motor of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0033] Figure 9 This is a clockwise swing assembly diagram of a silicone oil clutch with swing heat dissipation ribs according to the present invention;

[0034] Figure 10 This is a flow chart of a dual control system of a silicone oil clutch with swinging heat dissipation ribs according to the present invention;

[0035] Among them: In the figure: 1, housing, 2, auxiliary heat dissipation rib, 3, auxiliary transmission gear, 4, main transmission gear, 5, drive motor, 6, motor fixing plate, 7, driving gear, 8, driven gear, 9, temperature sensor, 10, driven disk, 11, valve plate, 12, driving disk, 13, working chamber, 14, drive shaft, 15, main heat dissipation rib, 16, positioning bolt. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.

[0037] In this embodiment, referring to Figure 1-8 ,

[0038] A silicone oil clutch with a transverse swing heat dissipation function, comprising a housing (1), a secondary heat dissipation rib (2), a secondary transmission gear (3), a main transmission gear (4), a driving motor (5), a motor fixing plate (6), a driving gear (7), a driven gear (8), a temperature sensor (9), a driven disc (10), a valve plate (11), a driving disc (12), a working chamber (13), a driving shaft (14), a primary heat dissipation rib (15), and a positioning bolt (16); a small hole is formed at the bottom of the primary heat dissipation rib (15), and the primary heat dissipation rib (15) is connected to the housing (1) via the positioning bolt (16); the driving gear (7) The auxiliary transmission gear (3) is meshed with the driven gear (8); the driving shaft (14) is placed below the driving motor (5), and the driving motor (5) drives the driving gear (7) to rotate; the driven gear (8) rotates to adjust the swing angle of the auxiliary heat dissipation rib (2); the driving motor (5) is used to drive the driving gear (7); the temperature sensor (9) is located in the working chamber (13) formed between the driving disk (12) and the driven disk (10), and adjusts the rotation of the driving motor (5) according to the real-time silicone oil temperature through a double closed-loop PID algorithm.

[0039] Furthermore, the main transmission gear (4) and the driving gear (7) are meshed and driven to achieve swinging; the front end of the main heat dissipation rib (15) is connected to the driven gear (8) through the auxiliary transmission gear (3); when the driving gear (7) rotates, it drives the main transmission gear (4) to rotate synchronously, thereby driving the main heat dissipation rib (15); the front end of the auxiliary heat dissipation rib (2) is connected to the driven gear (8) through the auxiliary transmission gear (3); the driven gear (8) rotates under the drive of the main heat dissipation rib (15), and drives the auxiliary heat dissipation rib (2) to swing synchronously.

[0040] The present invention adopts dual closed-loop PID control to perform adaptive control of the swing angle of the main heat dissipation rib (15), thereby realizing adaptive adjustment of the heat dissipation rib; the dual closed-loop PID control includes a temperature loop and a current loop; the temperature loop outputs the desired swing angle of the main heat dissipation rib (15) through PID control according to the deviation between the desired temperature and the actual temperature of the silicone oil; the motor current determines the voltage of the drive motor (5) through PID control according to the deviation between the desired angle and the actual angle of the main heat dissipation rib (15), thereby realizing current closed-loop control, thereby realizing precise control of the heat dissipation rib angle. Further, the following implementation steps are included:

[0041] Step 1: The real-time silicone oil temperature detected by the temperature sensor (9) in the working chamber (13) Set silicone oil temperature Deviation As input, its expression is:

[0042] (1)

[0043] described The temperature of the silicone oil in the working chamber (13) is collected in real time by the temperature sensor (9); is the preset optimal working temperature of silicone oil; is the real-time temperature deviation value, Indicates that the temperature is too high. Indicates that the temperature is too low.

[0044] In step 2, the deviation is used as input to the temperature loop of the dual control loop PID algorithm to generate the target swing angle of the main heat dissipation rib (15), which is expressed as:

[0045] (2)

[0046] Where, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, It is the swing angle of the main heat dissipation rib (15).

[0047] Step 3: The current loop drives the motor through PID control to generate the corresponding output torque, thus achieving precise swing control of the heat dissipation rib swing angle. The swing angle error is:

[0048] (3)

[0049] Where, The target swing angle calculated for the temperature loop; is the current actual swing angle.

[0050] (4)

[0051] Where, Control voltage for driving motor; is the proportional gain, is the integral gain, is the differential gain.

[0052] The motor input current The corresponding torque is generated:

[0053] (5)

[0054] Where, is the output torque of the driving motor (5), is the torque constant of the driving motor (5), the output torque The transmission system acting on the heat dissipation ribs ensures the system has dynamic adaptability under different temperature conditions and achieves efficient heat dissipation control.

[0055] In this embodiment, the temperature loop monitors the actual temperature of the silicone oil in the working chamber (13) in real time through the temperature sensor (9). The system compares the detected value with the preset target temperature and calculates the temperature deviation as the input of the PID controller. The larger the temperature error, the higher the degree of deviation of the current working condition from the ideal state. The PID controller calculates the target swing angle of the main heat dissipation rib (15) based on this and transmits the target angle to the current control loop. When the temperature rises, the temperature error increases, and the PID controller outputs a larger target swing angle; the system drives the motor (5) to rotate in the forward direction, and drives the driving gear (7), the main transmission gear (4), the auxiliary transmission gear (3) and the driven gear (8) to rotate in turn, so as to achieve the synchronous large-angle swing of the main heat dissipation rib (15) and the auxiliary heat dissipation rib (2), thereby enhancing the heat dissipation effect. Conversely, when the temperature drops, the PID controller calculates a smaller target angle, and the system drives the motor (5) to rotate in the reverse direction, so that the heat dissipation rib gradually returns to the initial state, weakening the heat dissipation effect to keep the silicone oil in a stable working range.

[0056] The current loop is a direct control loop for the drive motor (5). Its task is to control the operating state of the motor according to the target angle output by the temperature loop. After calculating the target angle, the system needs to adjust the actual output torque and speed of the motor to accurately achieve the angle adjustment. The current loop adjusts the input current of the drive motor (5) in real time through a closed-loop PID control method. Since the output torque of the drive motor is linearly related to the input current, the current loop ensures that the system output current matches the required target current. Under high temperature conditions, the system outputs a larger drive current through the current loop, generating a larger motor torque, causing the heat dissipation ribs to swing rapidly; when the temperature gradually approaches the stable range, the system gradually reduces the current input, the motor slows down and maintains the current angle to ensure the stability of temperature regulation. Under low temperature conditions, the system can even reversely adjust the input current to return the heat dissipation ribs to the retracted state to prevent excessive heat dissipation.

[0057] The present invention is not limited to the specific details of the above exemplary embodiments. The present invention may be implemented in other forms without violating the core ideas or basic features of the present invention. Therefore, these embodiments are only examples and are not intended to limit the scope of the present invention. The scope of the present invention is determined by the appended claims and covers all modifications that fall within the scope of equivalence of the claims.

[0058] In addition, although this specification describes the embodiments, not every embodiment corresponds to only one independent technical solution. This description is only for clarity of expression. Technicians should take the specification as a whole and combine the technical solutions in each embodiment to form other understandable implementation methods.

Claims

1. A silicone oil clutch with lateral swing heat dissipation function, characterized in that: The invention comprises a housing (1), a secondary heat dissipation rib (2), a secondary transmission gear (3), a main transmission gear (4), a driving motor (5), a motor fixing plate (6), a driving gear (7), a driven gear (8), a temperature sensor (9), a driven disc (10), a valve plate (11), a driving disc (12), a working chamber (13), a driving shaft (14), a main heat dissipation rib (15), and a positioning bolt (16); a small hole is formed at the bottom of the main heat dissipation rib (15), and the main heat dissipation rib (15) is connected to the housing (1) through the positioning bolt (16); the driving gear (7) is meshed with the main transmission gear (4), and the secondary ... The transmission gear (3) is meshed with the driven gear (8); the drive shaft (14) is placed below the drive motor (5), and the drive motor (5) drives the driving gear (7) to rotate; the driven gear (8) rotates to adjust the swing angle of the auxiliary heat dissipation rib (2); the drive motor (5) is used to drive the driving gear (7); the temperature sensor (9) is located in the working chamber (13) formed between the driving disk (12) and the driven disk (10), and adjusts the rotation direction and rotation angle of the drive motor (5) according to the real-time silicone oil temperature through a double closed-loop PID algorithm.

2. According to claim 1, a silicone oil clutch with lateral swing heat dissipation function, characterized in that: The main transmission gear (4) and the driving gear (7) are meshed and driven to achieve swinging; the front end of the main heat dissipation rib (15) is connected to the driven gear (8) through the auxiliary transmission gear (3); when the driving gear (7) rotates, it drives the main transmission gear (4) to rotate synchronously, thereby driving the main heat dissipation rib (15); the front end of the auxiliary heat dissipation rib (2) is connected to the driven gear (8) through the auxiliary transmission gear (3); the driven gear (8) rotates under the drive of the main heat dissipation rib (15), and drives the auxiliary heat dissipation rib (2) to swing synchronously.

3. According to claim 1, a silicone oil clutch with lateral swing heat dissipation function, characterized in that: A dual closed-loop PID control is used to adaptively control the swing angle of the main heat dissipation rib (15), thereby realizing adaptive adjustment of the heat dissipation rib; the dual closed-loop PID control includes a temperature loop and a current loop; the temperature loop outputs the desired swing angle of the main heat dissipation rib (15) through PID control according to the deviation between the desired temperature and the actual temperature of the silicone oil; the current loop determines the voltage of the drive motor (5) through PID control according to the deviation between the desired angle and the actual angle of the heat dissipation rib, thereby realizing current closed-loop control and thus realizing precise control of the heat dissipation rib.

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