Transmission control system

Abstract

The utility model discloses a transmission control system which is characterized in that a first switch valve is connected with a second switch valve through a second oil pipe, the first switch valve is connected with a proportional valve through a third oil pipe, the second switch valve is connected with the third oil pipe through a fourth oil pipe, and the proportional valve is connected with a third switch valve through a fifth oil pipe; the third switch valve is connected with the ahead clutch and the back-up clutch; wherein the first switch valve is used for controlling oil to enter the second switch valve or the proportional valve; the second switch valve is used for controlling oil to enter the third oil pipe or the oil pool; the proportional valve is used for controlling oil to enter the third switch valve or the oil pool; the third switch valve is used for controlling oil to enter the ahead clutch or the back-up clutch; part of the second oil pipe is installed on the engine and absorbs heat emitted by the engine. By means of the arrangement, preheated, heated and non-heated oil can be controlled to enter the third oil pipe, then the temperature of the oil entering the clutch can be better balanced, and the inching slip frequency function of the clutch is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic transmission, in particular to a transmission control system. Background Art

[0002] In a power box without a torque converter, the proportional valve adjusts the pressure and controls the clutch to transmit power. In winter, due to the increase in oil viscosity, the proportional valve pressure regulation performance decreases. When the power box starts and shifts gears, the response time increases and the smoothness decreases. In particular, ships need to have a micro-slip function under some conditions. It is necessary to control the proportional valve pressure and the master-slave slip degree of the clutch to steplessly adjust the output speed of the transmission. Since the rotation speed of the propeller in water is in a cubic relationship with the resistance torque of the water, the pressure on the clutch at the low speed section of micro-slip is about 0.7 bar to transmit effective torque and drive the propeller to rotate at a low speed. At a low temperature below 10, the viscosity of the oil increases. When the proportional valve is started, an initial pressure is generated. The proportional valve cannot reduce this pressure and is uncontrollable. This initial pressure may exceed the pressure required for some micro-slip speeds, resulting in a low-speed section that cannot be controlled and adjusted, compressing the adjustment range of the micro-slip speed. It takes a long time to run and wait for the temperature to slowly rise before reaching normal performance. Even using expensive special oils cannot completely change this state. If an active heating device is added, it will cause energy waste and increase operating costs, making the power box starting and shifting performance greatly affected by weather temperature differences, especially the micro-slip function, which cannot be used quickly and stably in low temperature weather.

[0003] The prior art with announcement number CN202055939U discloses an engine system with an exhaust gas recirculation system, including: an engine, the engine having an exhaust gas recirculation system for recirculating exhaust gas from the exhaust side of the engine to the intake side of the engine, the exhaust gas recirculation system including an exhaust cooler and an exhaust gas recirculation control valve; an oil heat exchanger, which is arranged to directly receive a heat transfer fluid from the exhaust cooler and directly supply oil to a main oil channel of the engine; a first flow control device, which changes the flow of oil through the exhaust cooler and the oil heat exchanger; a second flow control device, which changes the flow of oil through the oil heat exchanger; and a controller, which is connected to the exhaust gas recirculation control valve, the first flow control device and the second control device to control the flow of recirculated exhaust gas, heat transfer fluid, and oil based on the engine operating state, wherein the controller is operable to control the exhaust gas recirculation control valve and the first and second flow control devices so as to heat the oil returned to the main oil channel after a cold start.

[0004] In the prior art, the supply oil is heated by recovering the exhaust heat. However, due to the poor stability of the exhaust, the heat dissipation of the exhaust is faster in a low temperature environment, and the stability of the heat recovery efficiency is lower. Utility Model Content

[0005] In order to solve the problem of poor heating stability of hydraulic oil in the prior art, the purpose of the utility model is to provide a transmission control system that can utilize engine heat to heat the oil temperature, and increase the oil temperature entering the clutch under low temperature conditions in an environmentally friendly and energy-saving manner through a combination of multiple switch valves and proportional valves.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a transmission control system, which is used to control the forward output or reverse output of the power box; it includes a first oil pipe, a second oil pipe, a third oil pipe, a fourth oil pipe and a fifth oil pipe; the oil pump is connected to the first switch valve through the first oil pipe, the first switch valve is connected to the second switch valve through the second oil pipe, the first switch valve is connected to the proportional valve through the third oil pipe, the second switch valve is connected to the third oil pipe through the fourth oil pipe, the proportional valve is connected to the third switch valve through the fifth oil pipe, and the third switch valve is connected to the forward clutch and the reverse clutch; wherein the first switch valve is used to control the oil to enter the second switch valve or the proportional valve; the second switch valve is used to control the oil to enter the third oil pipe or the oil pool; the proportional valve is used to control the oil to enter the third switch valve or the oil pool; the third switch valve is used to control the oil to enter the forward clutch or the reverse clutch; part of the second oil pipe is installed on the engine to absorb the heat emitted by the engine.

[0007] Preferably, the second oil pipe includes a hose and a hard pipe, wherein the hard pipe is installed on the engine, and the hard pipe is connected to the first switch valve and the second switch valve through the hose.

[0008] Preferably, the hard tube is a serpentine metal tube, and the soft tube is a rubber hose.

[0009] Preferably, the first oil pipe is connected to the sixth oil pipe, and the sixth oil pipe provides lubricating oil to the power box.

[0010] Preferably, a back pressure valve is installed on the sixth oil pipe.

[0011] Preferably, a filter is installed on the first oil pipe, and the oil pump draws oil from the oil pool and supplies oil to the first proportional valve and various lubrication points of the power box.

[0012] Preferably, it also includes an information acquisition device for acquiring information about the oil in the oil pipe, and the transmission system controls the status of each hydraulic valve through the information fed back by the information acquisition device.

[0013] Preferably, the information collection device comprises a temperature sensor, which is mounted on the first oil pipe and is located at the rear end of the filter.

[0014] Preferably, the information collection device also includes a pressure sensor, and the pressure sensor is installed on the fifth oil pipe.

[0015] Preferably, the power box includes an input shaft, a transmission shaft, a first gear, a second gear, a third gear, a fourth gear and a fifth gear. The first gear and the second gear are fixed on the input shaft, the fifth gear is fixed on the transmission shaft, the first gear is meshed with the third gear through the fifth gear, and the second gear is meshed with the fourth gear; the third gear is connected to the output shaft through a forward clutch, and the fourth gear is connected to the output shaft through a reverse clutch.

[0016] The beneficial effects of the technical solution of the utility model are as follows: the control system can control whether the oil is heated; when the forward clutch and the reverse clutch are not connected, the control system can preheat the oil in the oil pool; when the forward clutch or the reverse clutch is connected, the control system can send the heated oil into the forward clutch and the reverse clutch; the scheme in the scheme is a double switch valve combination of the first switch valve and the second switch valve, so that the preheated, heated, and non-heated oil can be controlled to enter the third oil pipe in combination with the temperature sensor, so as to better balance the temperature of the oil entering the clutch and ensure the micro-slip function of the clutch; the scheme utilizes the characteristics of fast temperature rise of the engine when starting, utilizes the heat emitted by the engine to heat the power box oil, quickly increases the power box oil temperature, and improves the control performance of the proportional valve at low ambient temperature, so that in a low temperature environment, the power box can also quickly achieve good starting and shifting performance; in a low temperature environment, the micro-slip performance can be quickly and stably applied, and ordinary hydraulic oil can be used, which reduces costs, does not need to waste energy for heating, and saves energy, is environmentally friendly, and safely improves the all-weather use of the micro-slip function of the transmission device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the hydraulic principle diagram of the transmission control system;

[0018] Figure 2 This is the transmission principle diagram of the transmission control system.

[0019] Reference numerals: 1, first oil pipe; 2, second oil pipe; 3, third oil pipe; 4, fourth oil pipe; 5, fifth oil pipe; 7, filter; 8, oil pump; 9, engine; 10, oil pool; 11, temperature sensor; 12, pressure sensor;

[0020] M1, first switch valve; M2, second switch valve; M3, proportional valve; M4, third switch valve;

[0021] Z1, first gear; Z2, second gear; Z3, third gear; Z4, fourth gear; Z, fifth gear;

[0022] KR, forward clutch; KV, reverse clutch. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Example

[0028] like Figure 1 and Figure 2 A transmission control system is shown, which is used to control the forward output or reverse output of the power box; it includes a first oil pipe 1, a second oil pipe 2, a third oil pipe 3, a fourth oil pipe 4 and a fifth oil pipe 5; the oil pump is connected to the first switch valve M1 through the first oil pipe 1, the first switch valve M1 is connected to the second switch valve M2 through the second oil pipe 2, the first switch valve M1 is connected to the proportional valve M3 through the third oil pipe 3, the second switch valve M2 is connected to the third oil pipe 3 through the fourth oil pipe 4, the proportional valve M3 is connected to the third switch valve M4 through the fifth oil pipe 5, and the third switch valve M4 is connected to the forward clutch KR and the reverse clutch KV; wherein the first switch valve M1 is used to control the oil to enter the second switch valve M2 or the proportional valve M3; the second switch valve M2 is used to control the oil to enter the third oil pipe 3 or the oil pool 10; the proportional valve M3 is used to control the oil to enter the third switch valve M4 or the oil pool 10; the third switch valve M4 is used to control the oil to enter the forward clutch KR or the reverse clutch KV;

[0029] The hard pipe portion of the second oil pipe 2 is installed on the engine 9 to absorb the heat emitted by the engine 9.

[0030] With such arrangement, the control system can control whether the oil is heated; when the forward clutch KR and the reverse clutch KV are not connected, the control system can preheat the oil in the oil pool 10; when the forward clutch KR or the reverse clutch KV is connected, the control system can send the heated oil into the forward clutch and the reverse clutch KV; the invention in the above scheme is a double switch valve combination, so that the combination of the temperature sensor can control the preheated, heated, and non-heated oil to enter the third oil pipe, and then can better balance the temperature of the oil entering the clutch, and ensure the micro-slip function of the clutch; the above scheme utilizes the characteristics of the engine 9 starting and heating up quickly, and utilizes the heat emitted by the engine 9 to heat the power box oil, quickly increase the power box oil temperature, and improve the control performance of the proportional valve at low ambient temperature, so that in a low temperature environment, the power box can also quickly achieve good starting and shifting performance; in a low temperature environment, the micro-slip performance can be quickly and stably applied, and ordinary hydraulic oil can be used, which reduces costs, does not need to waste energy for heating, and saves energy, is environmentally friendly, and safely improves the all-weather use of the micro-slip function of the transmission device.

[0031] In this embodiment, the second oil pipe 2 includes a hose and a hard pipe, wherein the hard pipe is installed on the engine 9, and the hard pipe is connected to the first switch valve M1 and the second switch valve M2 through the hose; wherein the hard pipe is a serpentine metal pipe, and the hose is a rubber hose. In this way, the heating oil pipe combined with the hose and the hard pipe utilizes the characteristic that the rubber hose has poor thermal conductivity compared with the metal pipe, so as to avoid the heat of the engine 9 affecting the temperature of the oil in the power box when no heating is required, and the serpentine metal pipe, steel pipe or galvanized pipe is fixed at the heat gathering position of the engine 9 shell, which is easy to accelerate the temperature increase of the oil in the power box.

[0032] In this embodiment, the first oil pipe 1 is connected to the sixth oil pipe, and the sixth oil pipe provides lubricating oil to the power box. This arrangement ensures that the shaft system components in the power box run stably.

[0033] In this embodiment, a filter 7 is further installed on the first oil pipe 1, and the oil pump 8 draws oil from the oil pool 10 to supply oil to the first switch valve M1 and various lubrication points of the power box.

[0034] In this embodiment, an information acquisition device for collecting information about the oil in the oil pipe is also included. The transmission system controls the state of each hydraulic valve through the information fed back by the information acquisition device. Further, the information acquisition device includes a temperature sensor 11, which is installed on the first oil pipe 1 and is located at the rear end of the filter; the information acquisition device also includes a pressure sensor 12, which is installed on the fifth oil pipe 5.

[0035] In this embodiment, a back pressure valve is installed on the sixth oil pipe.

[0036] In this embodiment, the power box includes an input shaft, a transmission shaft, a first gear Z1, a second gear Z2, a third gear Z3, a fourth gear Z4 and a fifth gear Z5, and the reverse clutch KV and the forward clutch KR have the same structure; in the reverse clutch KV, the outer shell of the reverse clutch KV is fixed on the output shaft, and the multiple inner friction plates and the multiple outer friction plates of the reverse clutch KV are alternately arranged, the inner friction plates of the reverse clutch KV are sleeved on the fourth gear Z4 and spline-connected, and the outer friction plates of the reverse clutch KV are located in the outer shell of the reverse clutch KV and spline-connected; in the forward clutch KR, the outer shell of the forward clutch KR is fixed on the output shaft, and the forward clutch KR is The multiple inner friction plates and the multiple outer friction plates of the forward clutch KR are arranged alternately, the inner friction plates of the forward clutch KR are sleeved on the third gear Z3 and splined, and the outer friction plates of the forward clutch KR are located in the outer shell of the forward clutch KR and splined; the first gear Z1 and the second gear Z2 are fixed on the input shaft, and the fifth gear Z5 is fixed on the transmission shaft. The first gear Z1 is meshed with the third gear Z3 through the fifth gear Z5, and the second gear Z2 is meshed with the fourth gear Z4; the third gear Z3 is connected to the output shaft through the forward clutch, and the fourth gear Z4 is connected to the output shaft through the reverse clutch. The forward clutch and the reverse clutch are coaxially arranged.

[0037] In this embodiment, the first switch valve M1, the second switch valve M2, the proportional valve M3 and the third switch valve M4 are all installed at the transmission end; the first switch valve M1, the second switch valve M2, the proportional valve M3 and the third switch valve M4 are all hydraulic valves.

[0038] The heating control method using the above transmission control system includes: after the controller collects information feedback from the temperature sensor and the pressure sensor, the controller is calibrated according to the working conditions. When the hydraulic oil temperature of the power box is above 35, the initial pressure of the hydraulic oil is generally lower than 0.5 bar, and the load cannot be driven by pressurizing the clutch, so the proportional valve M3 can effectively adjust the slip speed in the whole range. When the oil temperature is set to be lower than 35, when the forward clutch KR and the reverse clutch KV of the power box are not connected, only the first switch valve M1 is opened to preheat the oil in the power box oil tank; if the power box is connected to the forward and reverse, the first switch valve M1 and the second switch valve M2 are opened at the same time, and the working oil of the power box passes through the heating pipeline, enters the working valve group after heating, and performs full connection or partial slip; once the temperature rises to the heart, all slip functions can be performed; after the temperature reaches 40, the first switch valve M1 and the second switch valve M2 are closed, and the working oil directly enters the working valve group without heating, and the oil in the heating pipe returns to the oil tank.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A transmission control system, characterized in that: The system is used to control the forward or reverse output of a power box; it comprises a first oil pipe (1), a second oil pipe (2), a third oil pipe (3), a fourth oil pipe (4) and a fifth oil pipe (5); the oil pump is connected to a first switch valve (M1) through the first oil pipe (1); the first switch valve (M1) is connected to a second switch valve (M2) through the second oil pipe (2); the first switch valve (M1) is connected to a proportional valve (M3) through the third oil pipe (3); the second switch valve (M2) is connected to the third oil pipe (3) through the fourth oil pipe (4); the proportional valve (M3) is connected to the third oil pipe (4) through the fifth oil pipe (5); The pipe (5) is connected to the third switch valve (M4), and the third switch valve (M4) is connected to the forward clutch (KR) and the reverse clutch (KV); wherein the first switch valve (M1) is used to control the oil to enter the second switch valve (M2) or the proportional valve (M3); the second switch valve (M2) is used to control the oil to enter the third oil pipe (3) or the oil pool (10); the proportional valve (M3) is used to control the oil to enter the third switch valve (M4) or the oil pool (10); the third switch valve (M4) is used to control the oil to enter the forward clutch (KR) or the reverse clutch (KV); The hard pipe portion of the second oil pipe (2) is mounted on the engine (9) to absorb heat emitted by the engine (9).

2. A transmission control system according to claim 1, characterized in that: The second oil pipe (2) comprises a hose and a hard pipe, wherein the hard pipe is mounted on the engine (9), and the hard pipe is connected to the first switch valve (M1) and the second switch valve (M2) via the hose.

3. A transmission control system according to claim 2, characterized in that: The hard pipe is a serpentine metal pipe and the soft pipe is a rubber hose.

4. A transmission control system according to claim 1, characterized in that: The first oil pipe (1) is connected to the sixth oil pipe, and the sixth oil pipe supplies lubricating oil to the power box.

5. A transmission control system according to claim 4, characterized in that: A back pressure valve is installed on the sixth oil pipe.

6. A transmission control system according to claim 4, characterized in that: A filter (7) is also installed on the first oil pipe (1), and the oil pump (8) draws oil from the oil pool (10) and supplies oil to the first switch valve (M1) and various lubrication points of the power box.

7. A transmission control system according to claim 1, characterized in that: It also includes an information collection device for collecting information about the oil in the oil pipe; the transmission system controls the states of the first switch valve (M1), the second switch valve (M2), the proportional valve (M3) and the third switch valve (M4) through the information fed back by the information collection device.

8. A transmission control system according to claim 7, characterized in that: The information collection device comprises a temperature sensor (11), the temperature sensor is mounted on the first oil pipe (1), and the temperature sensor (11) is located at the rear end of the filter (7).

9. A transmission control system according to claim 7, characterized in that: The information collection device also includes a pressure sensor (12), and the pressure sensor (12) is installed on the fifth oil pipe (5).

10. A transmission control system according to claim 1, characterized in that: The power box comprises an input shaft, a transmission shaft, a first gear (Z1), a second gear (Z2), a third gear (Z3), a fourth gear (Z4) and a fifth gear (Z5). The first gear (Z1) and the second gear (Z2) are fixed on the input shaft, the fifth gear (Z5) is fixed on the transmission shaft, the first gear (Z1) is meshed with the third gear (Z3) through the fifth gear (Z5), and the second gear (Z2) is meshed with the fourth gear (Z4) for transmission; the third gear (Z3) is connected to the output shaft through a forward clutch (KR), and the fourth gear (Z4) is connected to the output shaft through a reverse clutch (KV).

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