Silicone oil clutch with lateral swing heat dissipation function

Abstract

The present application relates to a kind of silicon oil clutch with transverse swing heat dissipation function, belong to the technical field of coupling device between tractor and machinery, including shell, vice heat dissipation rib, vice transmission gear, main drive gear, driving motor, motor fixed plate, driving gear, driven gear, temperature sensor, valve piece, driving disc, working cavity, driving shaft, main heat dissipation rib.Synchronous swing is driven by gear set main, vice heat dissipation rib, and the swing angle of heat dissipation rib is controlled using double closed loop PID algorithm, and the heat dissipation effect is dynamically adjusted.Compared with the traditional fixed heat dissipation rib, the present application can quickly respond to different working conditions, optimize cooling effect, ensure the stability of silicon oil viscosity, improve clutch performance and service life, reduce energy consumption, and be suitable for the cooling system of high-load mechanical equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coupling devices between tractors and machines, in particular to a silicon oil clutch with lateral swinging heat dissipation function. BACKGROUND

[0002] In recent years, with the continuous improvement of agricultural mechanization, the performance and efficiency of agricultural machinery have been significantly improved. However, in the operation process of agricultural machinery, the silicon oil fan clutch is a key component in the engine cooling system, which mainly adjusts the running state of the fan according to the engine cooling demand to optimize the heat dissipation efficiency and reduce energy consumption.

[0003] The silicon oil clutches currently used on the market can be divided into temperature sensing type and electric control type. The temperature sensing type silicon oil clutch relies on the deformation of the bimetallic temperature sensing sheet to control the opening and closing of the silicon oil flowing into the working chamber, thereby adjusting the running state of the fan. The electric control type silicon oil clutch receives engine temperature, intake temperature, speed and other signals through the electric control unit, and adjusts the opening and closing of the valve according to the real-time working condition, realizes the accurate flow control of silicon oil, and makes the fan can dynamically adjust the speed according to the engine demand.

[0004] However, the silicon oil clutches on the market still have certain limitations in heat dissipation adjustment. The heat dissipation ribs of the traditional silicon oil fan clutch adopt a fixed structure and cannot be actively adjusted to adapt to different working conditions, resulting in that the heat dissipation capacity completely depends on passive air cooling. In high temperature working conditions, the fixed heat dissipation ribs cannot actively enhance the heat dissipation efficiency, resulting in continuous increase of silicon oil temperature, decrease of its viscosity, weakening of torque transmission capacity, and affecting the transmission stability of the clutch. In low temperature working conditions, since the heat dissipation ribs are in a fixed state, they cannot reduce the heat dissipation intensity, resulting in too low silicon oil temperature and too high viscosity, which makes the clutch meshing and disengaging difficult, increases power loss, and reduces system response speed. SUMMARY

[0005] In view of the above technical deficiencies, the purpose of the present application is to design a silicon oil clutch with lateral swinging heat dissipation function to solve the problems of fixed heat dissipation ribs that cannot rotate and are difficult to dynamically adapt to the heat dissipation demand of the engine under different working conditions in the prior art.

[0006] To achieve the purpose of the background art, the present application adopts the following technical solutions:

[0007] A silicon oil clutch with transverse swing heat dissipation function, characterized in that it comprises a shell (1), a secondary heat dissipation rib (2), a secondary transmission gear (3), a primary 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 cavity (13), a driving shaft (14), a primary heat dissipation rib (15), and a positioning bolt (16); the bottom of the primary heat dissipation rib (15) is provided with a small hole, and the positioning bolt (16) is connected with the shell (1); the driving gear (7) is engaged with the primary transmission gear (4), and the secondary transmission gear (3) is engaged with the driven gear (8); the driving shaft (14) is arranged 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 for driving the driving gear (7); the temperature sensor (9) is located in the working cavity (13) formed between the driving disc (12) and the driven disc (10), and the real-time silicon oil temperature is used to adjust the rotation of the driving motor (5) through a double closed loop PID algorithm.

[0008] Further, the primary transmission gear (4) is engaged with the driving gear (7) to realize swing; the front end of the primary heat dissipation rib (15) is connected with the driven gear (8) through the secondary transmission gear (3); when the driving gear (7) rotates, the primary transmission gear (4) rotates synchronously to drive the primary heat dissipation rib (15); the front end of the secondary heat dissipation rib (2) is connected with the driven gear (8) through the secondary transmission gear (3); the driven gear (8) rotates under the drive of the primary heat dissipation rib (15) and drives the secondary heat dissipation rib (2) to swing synchronously.

[0009] The application adopts double closed loop PID control to realize self-adaptive control of the swing angle of the primary heat dissipation rib (15) and realize self-adaptive adjustment of the heat dissipation rib; the double closed loop PID control comprises a temperature loop and a current loop; the temperature loop outputs the expected swing angle of the primary heat dissipation rib (15) through PID control according to the deviation between the expected temperature and the actual temperature of the silicon oil; the motor current determines the voltage of the driving motor (5) through PID control according to the deviation between the expected angle and the actual angle of the primary heat dissipation rib (15) to realize current closed loop control and further realize accurate control of the angle of the heat dissipation rib. Further, the following implementation steps are included:

[0010] Step one, the real-time silicon oil temperature detected by the temperature sensor in the working cavity The deviation between the real-time silicon oil temperature and the set silicon oil temperature is taken as input, and the expression is:

[0011] (1)

[0012] Step two, the deviation As input, as the temperature ring of double control ring PID algorithm, the target swing angle of main heat dissipation rib is generated, and its expression is:

[0013] (2)

[0014] In the formula, Kp is the proportional coefficient, Ki is the integral coefficient, Kd is the differential coefficient, is the swing angle of main heat dissipation rib (15).

[0015] Step three, the current loop drives the motor (5) through PID control to generate corresponding output torque, so as to realize the accurate swing control of the swing angle of main heat dissipation rib (5).

[0016] The swing angle error is:

[0017] (3)

[0018] In the formula, is the target swing angle calculated by the temperature ring, is the current actual swing angle.

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

[0020] (4)

[0021] In the formula, is the driving electric control voltage, Kp is the proportional gain, Ki is the integral gain, Kd is the differential gain.

[0022] The motor input current Generates corresponding torque:

[0023] (5)

[0024] In the formula, is the output torque of driving motor (5), Torque constant of driving motor; the output torque Acts on the transmission system of heat dissipation rib, so as to ensure that the system has dynamic adaptability under different temperature conditions and realizes efficient heat dissipation control. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the assembly drawing of the silicon oil clutch with swing heat dissipation rib;

[0026] Figure 2 A power source view of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0027] Figure 3 A sectional view of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0028] Figure 4 A temperature sensor schematic diagram of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0029] Figure 5 A positioning pin schematic diagram of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0030] Figure 6 A large gear schematic diagram of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0031] Figure 7 A heat dissipation rib schematic diagram of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0032] Figure 8 A servo motor schematic diagram of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0033] Figure 9 A clockwise swing assembly diagram of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0034] Figure 10 A double control system flow chart of the silicon oil clutch with swing heat dissipation ribs according to the present application;

[0035] Wherein: in the figure: 1, the shell, 2, the auxiliary heat dissipation rib, 3, the auxiliary transmission gear, 4, the main transmission gear, 5, the drive motor, 6, the motor fixed plate, 7, the driving gear, 8, the driven gear, 9, the temperature sensor, 10, the driven disc, 11, the valve piece, 12, the driving disc, 13, the working cavity, 14, the driving shaft, 15, the main heat dissipation rib, 16, the positioning bolt. DETAILED DESCRIPTION

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

[0037] In this embodiment, reference is made to Figures 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 temperature sensor (9) in the working chamber (13) detects the real-time silicone oil temperature. 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 the present embodiment, the temperature ring monitors the actual temperature of the silicone oil in the working cavity (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 greater 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) accordingly, 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 forward, which in turn drives the driving gear (7), the main transmission gear (4), the auxiliary transmission gear (3) and the driven gear (8) to rotate, realizing 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 decreases, the PID controller calculates a smaller target angle, and the system drives the motor (5) to rotate in the opposite direction, so that the heat dissipation rib gradually returns to the initial state, and the heat dissipation effect is weakened, so as to keep the silicone oil in the stable working interval.

[0056] The current loop, as the direct control loop of the driving motor (5), controls the running 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 realize the angle adjustment. The current loop adjusts the input current of the driving motor (5) in real time through closed-loop PID control. Since the output torque of the driving 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 working condition, the system outputs larger driving current through the current loop to generate greater motor torque, so that the heat dissipation rib swings quickly; when the temperature gradually tends to be in the stable range, the system gradually reduces the current input, and the motor slows down and maintains the current angle, ensuring the stability of temperature regulation. Under low temperature working condition, the system can even adjust the input current in the opposite direction, so that the heat dissipation rib returns to the folded state, to prevent excessive heat dissipation.

[0057] The present application is not limited to the specific details of the above exemplary embodiments, and can be implemented in other forms without departing from the core idea or basic characteristics of the present application; therefore, these embodiments are only examples, and do not limit the scope of the present application; the scope of the present application is determined by the appended claims, and covers all modifications within the equivalent scope of the claims.

[0058] In addition, although the present specification is described in embodiments, not every embodiment corresponds to only one independent technical solution. This description is only for clarity, and the skilled person should consider the specification as a whole, and form other understandable implementation manners in combination with the technical solutions in each embodiment.

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 opened at the bottom of the main heat dissipation rib (15), and the main transmission gear (4) is connected to the housing (1) through the positioning bolt (16); the driving gear (7) is connected to the main transmission gear (8) and the main transmission gear (9). The auxiliary transmission gear (3) is engaged 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 driving temperature according to the real-time silicone oil temperature through a double closed-loop PID algorithm. The rotation direction and rotation angle of the motor (5) are realized by meshing the main transmission gear (4) with the driving gear (7) to realize 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 (7) to rotate synchronously, thereby realizing 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 (15) to rotate synchronously. The heat ribs (2) swing synchronously; a dual closed-loop PID control is used to adaptively control the swing angle of the main heat dissipation ribs (15), thereby realizing adaptive adjustment of the heat dissipation ribs; 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 ribs (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 ribs, thereby realizing current closed-loop control and thus realizing precise control of the heat dissipation ribs.

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