CN111322391A - Speed change control system of off-axis two-gear transmission - Google Patents
Speed change control system of off-axis two-gear transmission Download PDFInfo
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- CN111322391A CN111322391A CN201911199809.0A CN201911199809A CN111322391A CN 111322391 A CN111322391 A CN 111322391A CN 201911199809 A CN201911199809 A CN 201911199809A CN 111322391 A CN111322391 A CN 111322391A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a speed change control system of an eccentric shaft type two-gear transmission, which comprises a controller, wherein the controller is connected with the eccentric shaft type two-gear transmission, and the eccentric shaft type two-gear transmission comprises an input shaft, an output shaft, an intermediate shaft, a switching type double clutch, a shell, an oil circuit structure and an oil circuit control system; the controller comprises an analog quantity output unit, and the analog quantity output unit is connected with the regulating and controlling unit; the controller is used for acquiring gear information, and controlling the analog quantity output unit to output different analog quantity control information to the regulation and control unit according to the control corresponding relation between the prestored gear information and the analog quantity output unit. The invention realizes the purpose of automatic and quick gear shifting through the controller.
Description
Technical Field
The invention relates to the field of transmission control systems, in particular to an off-axis two-gear transmission speed change control system.
Background
The eccentric shaft type two-gear transmission can realize the change of two gears, and different torques input before and after can be changed through the change of different gears. Through the switching of different clutches of the transmission, the switching of different gears of the transmission can be realized. The existing proportional valves for closing different clutches can be opened manually, so that manual gear switching is realized. In order to achieve a fast automatic transmission gear shift, a gear control system of the transmission is required.
Disclosure of Invention
Therefore, an off-axis two-gear transmission speed change control system needs to be provided, and the problem that the existing transmission needs automatic quick gear shifting is solved.
In order to achieve the above object, the inventor provides a speed change control system of an off-axis two-gear transmission, which comprises a controller, wherein the controller is connected with the off-axis two-gear transmission, and the off-axis two-gear transmission comprises an input shaft, an output shaft, a switching double clutch, a shell, an oil path structure and an oil path control system;
the central line of the input shaft and the central line of the output shaft are arranged in parallel, the central lines of the input shaft and the output shaft are arranged in parallel, the input end of the input shaft and the output end of the output shaft respectively penetrate through two opposite side walls of the shell and are arranged in the shell, the input end of the input shaft protrudes out of the shell, and the output end of the output shaft protrudes out of the shell;
the switching type double clutch is arranged on an input shaft, the input shaft is provided with a first input gear and a second input gear, the output shaft is provided with a first output gear and a second output gear, the first input gear and the first output gear are meshed with each other, the second input gear and the second output gear are meshed with each other, the switching type double clutch is positioned between the first input gear and the second input gear, and the switching type double clutch is used for controlling the first input gear or the second input gear and the input shaft to perform mutual exclusion clutch operation;
the oil circuit structure comprises a shell oil circuit, an input shaft oil circuit and a clutch oil circuit, wherein the shell oil circuit is arranged in the shell, the input shaft oil circuit is arranged in the input shaft, and the shell oil circuit is communicated with the input shaft oil circuit; the clutch oil circuit is arranged in the switching type double clutch, and the input shaft oil circuit is communicated with the clutch oil circuit;
the oil way control system comprises a power unit and a regulating and controlling unit, wherein the output end of the power unit is connected with an oil way pipeline of the shell, the regulating and controlling unit is arranged on a pipeline between the oil way of the shell and the power unit, and the regulating and controlling unit is used for controlling the hydraulic oil pressure at two ends of the switching type double clutch;
the controller comprises an analog quantity output unit, and the analog quantity output unit is connected with the regulating and controlling unit; the controller is used for acquiring gear information, and controlling the analog quantity output unit to output different analog quantity control information to the regulation and control unit according to the control corresponding relation between the prestored gear information and the analog quantity output unit.
Further, the control corresponding relationship between the pre-stored gear information and the analog quantity output unit includes:
the prestored gear information is neutral gear, and the analog quantity output unit outputs the same analog quantity control information to the regulating and controlling unit, so that the hydraulic oil pressures at two ends of the clutch controlled by the regulating and controlling unit are the same.
Furthermore, the casing oil path is a double-hole conveying oil path, an oil inlet of the double-hole conveying oil path is arranged on the outer side face of the casing, and an oil outlet of the double-hole conveying oil path is arranged on the inner face of the shaft hole of the casing input shaft.
Further, the clutch oil path comprises a first oil guide passage and a second oil guide passage;
the first oil guide channel is arranged between one side of the piston inner cavity of the clutch and the inner side surface of the inner hole of the clutch, and the second oil guide channel is arranged between the other side of the piston inner cavity of the clutch and the inner side surface of the inner hole of the clutch.
Furthermore, the regulating unit comprises a first proportional valve, a second proportional valve, a first pressure detector and a second pressure detector, the first proportional valve is arranged on a pipeline between a shell oil path where the first oil guide channel is located and the power unit, an oil return port of the first proportional valve is connected with the oil storage tank pipe, the second proportional valve is arranged on a pipeline between the shell oil path where the second oil guide channel is located and the power unit, and an oil return port of the second proportional valve is connected with the oil storage tank pipe;
the first pressure detector is arranged on a pipeline between the first proportional valve and the switching double clutch, and the second pressure detector is arranged on a pipeline between the second proportional valve and the switching double clutch.
Further, the switching double clutch comprises a first clutch piece, a second clutch piece and a piston unit;
the piston unit comprises a double-end piston body and a cavity, the cross section of the double-end piston body is I-shaped, one end of the double-end piston body is arranged in the cavity, the other end of the double-end piston body is positioned outside the cavity, the oil outlet of the first oil guide channel is arranged on one side of the cavity, and the oil outlet of the second oil guide channel is arranged on the other side of the cavity;
the first clutch block comprises a first friction plate group, the second clutch block comprises a second friction plate group, the first friction plate group is located on one side of the other end of the double-end piston body, the second friction plate group is located on the other side of the other end of the double-end piston body, the first clutch block and the second clutch block are respectively arranged on gear pairs on two sides, and the double-end piston body is used for driving one of the first friction plate group or the second friction plate group to be combined and the other to be separated.
Furthermore, the input shaft oil path comprises a first conveying oil path and a second conveying oil path, an oil inlet of the first conveying oil path is communicated with one oil path of the double-hole oil path, an oil outlet of the first conveying oil path is communicated with the first oil guide path, an oil inlet of the second conveying oil path is communicated with the other oil path of the double-hole oil path, and an oil outlet of the second conveying oil path is communicated with the second oil guide path.
Further, the analog output unit is a current output unit or a voltage output unit.
Different from the prior art, according to the technical scheme, the controller can output the analog quantity according to the corresponding relation when the gear needs to be switched through the control corresponding relation between the gear information prestored in the controller and the analog quantity output unit. Thereby change the hydraulic pressure at the clutch both ends of regulation and control unit control, just can realize the drive to the clutch, realize the separation and reunion effect to change the switching action of different gear trains in the derailleur, thereby realize the operation of shifting gears, thereby realized the purpose of shifting gears through the controller is automatic fast.
Drawings
FIG. 1 is a schematic structural diagram of a shift control system according to an exemplary embodiment;
FIG. 2 is a schematic illustration of an off-axis two speed transmission according to an exemplary embodiment;
FIG. 3 is a schematic diagram of an off-axis two speed transmission according to an exemplary embodiment;
FIG. 4 is a cross-sectional view of an off-axis two speed transmission according to an exemplary embodiment;
FIG. 5 is a block diagram of an off-axis two speed transmission according to an exemplary embodiment;
fig. 6 is a partial schematic view of an off-axis two speed transmission according to an exemplary embodiment.
Description of reference numerals:
1. a controller; 2. a second gear transmission with an eccentric shaft; 3. a CPU; 4. an analog quantity output unit;
10. an input shaft; 11. a first input gear;
20. an output shaft; 21. a first output gear;
41. a second input gear;
43. second output gear
50. A switching type double clutch;
51. a first clutch block; 511. a first friction plate set;
52. a second clutch block; 521. a second friction plate set;
53. a piston unit; 531. a double-ended piston body; 532. a cavity;
70. a housing;
80. an oil path structure; 81. a housing oil passage; 82. an input shaft oil path;
84. a clutch oil path;
811. a double-hole oil delivery path;
821. a first delivery oil path; 822. a second delivery oil path; 823. a first seal ring;
841. a first oil guide passage; 842. a second oil guide passage;
90. an oil circuit control system; 91. a power unit; 92. a regulatory unit;
94. an oil storage tank; 95. a filter;
921. a first proportional valve; 922. a second proportional valve; 923. a first pressure detector;
924. a second pressure detector;
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to fig. 6, the present embodiment provides a gear shift control system of an off-axis two-gear transmission, including a controller 1, where the controller 1 is connected to an off-axis two-gear transmission 2, and the off-axis two-gear transmission 2 includes an input shaft 10, an output shaft 20, a switching dual clutch 50, a housing 70, an oil path structure 80, and an oil path control system 90. The oil path control system includes a power unit 91, a regulation unit 92, an oil reservoir 94, and a filter 95. An oil inlet of a shell oil path on the outer side of the shell is connected with a power unit through a pipe, and the power unit can be a gear pump or a hydraulic pump and the like to convey hydraulic oil. Two oil ducts are arranged in a clutch oil path of the oil path structure, and the two oil ducts are respectively as follows: the first oil guide passage and the second oil guide passage. The first oil guide passage is used for conveying hydraulic oil to one side of the double-end piston body in the cavity of the switching type double clutch, and the second oil guide passage is used for conveying hydraulic oil to the other side of the double-end piston body in the cavity of the switching type double clutch. Therefore, when oil enters from one side in the cavity, the double-end piston body can be pushed to move, the space of the cavity on the side is increased, the oil pressure is increased, the space of the other side in the opposite cavity is reduced, oil return is needed to be carried out, and the switching type double clutches are provided with two independent oil supply oil channels, so that the hydraulic oil is conveyed through the two pipelines outside the shell respectively.
Specifically, in order to make be full of hydraulic oil in the oil circuit, reach the oil feed and can drive the effect that the double-end piston body removed. The regulating unit in this embodiment comprises a first proportional valve 921, a second proportional valve 922, a first pressure detector 923 and a second pressure detector 924, which may be proportional pressure reducing valves. Two sections of pipelines are arranged between the oil storage tank and the shell, the front part of the pipeline is a main pipeline, and the rear part of the pipeline is two branch pipelines. The gear pump, the filter and the main way check valve are sequentially installed on the main way, the filter can be installed in a plurality of ways, and the branch check valve, the proportional valve and the pressure detector are sequentially installed on each branch pipeline.
Taking the first independent oil circuit that leads the oil duct place as an example, when carrying out the transport hydraulic oil, opening the gear pump and carrying the hydraulic oil in the batch oil tank to the filter in, the filter filters the large granule impurity in the hydraulic oil, for example dust, grit or oil block etc.. And then is conveyed to each branch pipeline through a main one-way valve. Hydraulic oil is conveyed to the oil path structure through the branch one-way valve, the first proportional valve and the first pressure detector on the branch pipeline again, and then the hydraulic oil is conveyed to one side in the cavity of the switching type double clutch through the first oil guide passage. In the same way, the independent oil path where the second oil guide passage is located conveys the hydraulic oil to the oil path structure through the branch one-way valve, the second proportional valve and the second pressure detector on the other branch pipeline, and then conveys the hydraulic oil to the other side in the cavity of the switching type double clutch through the second oil guide passage.
After the hydraulic oil enters the oil path structure, if the switching type double clutch is controlled, the hydraulic oil sequentially passes through the shell oil path, the input shaft oil path and the clutch oil path to reach a piston cavity of the switching type double clutch.
If the piston cavity of the switching type double clutch performs oil return, the proportional pressure reducing valve performs pressure reduction and oil return, the proportional pressure reducing valve can perform oil return according to oil pressure, and the returned hydraulic oil is conveyed back to the oil storage tank. Meanwhile, the first pressure detector monitors the oil pressure on the first oil guide channel, namely when the oil pressure in the cavity of the switching type double clutch is reduced, the first pressure detector feeds detected information back to the terminal, and the terminal can be a controller, a computer, a mobile phone or an industrial control mainframe box. And the oil duct structure of the switching type double clutch is ensured to be in a full oil state by processing information by the terminal and controlling the oil return amount of the first proportional valve.
The existing controller is generally an intelligent control unit, and may include a CPU3, and the CPU3 may store therein the control correspondence between the gear information and the analog output unit. In order to realize the control of the speed changer regulating and controlling unit, the controller comprises an analog quantity output unit 4 which is connected with the regulating and controlling unit; the controller is used for acquiring gear information, and controlling the analog quantity output unit to output different analog quantity control information to the regulation and control unit according to the control corresponding relation between the prestored gear information and the analog quantity output unit. The controller is configured to acquire the gear information, where the gear information may be required gear information calculated by the controller according to an external input, or the unit information is directly sent to the controller by an external module. The analog quantity output unit may be a voltage output unit or a current output unit, corresponding to the output voltage or current. Thereby realizing the control of different types of regulating units. The analog quantity output unit can be constructed by an analog circuit, and after the analog quantity is output by the CPU, the analog quantity signal is amplified by the analog circuit, so that the output of the analog quantity with larger driving capability is realized. Or the analog quantity output unit can be a single digital-to-analog chip, and after the digital quantity is output by the CPU, a signal with driving capability is output through the digital-to-analog chip. Finally, the control of the regulation and control unit is realized. After the controller controls the regulation and control unit, the hydraulic pressure at the two ends of the clutch controlled by the regulation and control unit can be changed, so that the clutch can be driven, the clutch effect is realized, the switching action of different gear sets in the transmission is changed, the gear shifting operation is realized, and the purpose of automatically and quickly shifting gears through the controller is realized.
Since the clutch of the present embodiment is a switching type dual clutch, if the hydraulic balance at both ends of the clutch is changed, the end with a small pressure is in an engaged state, and the other end is in a disengaged state. The hydraulic balance across the clutch is maintained, i.e. the pressure is the same, when neutral is required. When the acquired gear information is neutral, the controller controls the analog quantity output unit to output the same analog quantity control information to the regulation and control unit, so that the hydraulic oil pressures at two ends of the clutch controlled by the regulation and control unit are the same, the clutch is located in the middle position, and the two ends of the clutch are in a separated state. In order to realize the neutral gear control, the controller stores the corresponding relation between the gear information of the neutral gear and the same analog quantity to be output by the analog quantity output unit in advance, such as a corresponding relation table. And then, in the control process, the rapid gear control can be realized only by reading the corresponding relation. When other gears are needed, one gear can be set to have one end of the hydraulic pressure at two ends of the clutch larger than the other end of the hydraulic pressure, and the other gear can be set to have the other end of the hydraulic pressure at two ends of the clutch larger than one end of the hydraulic pressure. When the pressure difference exists between the two ends of the clutch, namely one end of the clutch is in an engaged state, a gear condition is entered, and therefore gear switching of the controller is achieved.
The input end of the input shaft and the output end of the output shaft penetrate through two opposite side walls of the shell respectively and are arranged in the shell, the center line of the output shaft is parallel to the center line of the input shaft and is arranged in the shell, and the shaft, the gear, the clutch and the like in the transmission can be protected through the shell. The input shaft is provided with a first input gear 11 and a second input gear 41, and the output shaft is provided with a first output gear 21 and a second output gear 43. The first input gear and the first output gear are meshed with each other to form a first gear pair, and the second input gear and the second output gear are meshed with each other to form a second gear pair.
The switching type double clutch is arranged on an input shaft between the first input gear and the second input gear, and mutually exclusive clutch operation is carried out on the first gear pair and the second gear pair. When the mutual exclusion is that the first gear pair is in a closed state, the second gear pair is in an open state; conversely, when the second gear pair is in the engaged state, the first gear pair is in the disengaged state. When the gear pair is in the engaged state, the power of the input shaft is transmitted to the gear pair corresponding to the engaged state, and the other gear pair is in the disengaged state. Therefore, two different routes of power transmission modes can be carried out on the first gear pair and the second gear pair through the switching type double clutch.
Specifically, the first route is as follows: the power of the input shaft can be transmitted to the output shaft through the first gear pair; the corresponding second route is: the input shaft transmits power to the output shaft through the second gear pair. The effect of two gear changes of two pairs of gear pairs is achieved.
The switching type double clutch in the embodiment comprises a first clutch block 51, a second clutch block 52 and a piston unit 53, wherein the piston unit comprises a double-end piston body 531 and a cavity 532, the cross section of the double-end piston body is I-shaped, and the structure of the double-end piston body is formed by combining three ring bodies, so that the double-end piston body is arranged in the cavity and is controlled to move in the cavity through inputting hydraulic oil, and then the clutch operation that one end of the switching type double clutch is in a closed state and the other end of the switching type double clutch is in a separated state is.
The oil path structure in this embodiment includes a housing oil path 81, an input shaft oil path 82, and a clutch oil path 84, the housing oil path includes a dual-hole delivery oil path 811, the clutch oil path includes a first oil guide path 841 and a second oil guide path 842, and the input shaft oil path includes a first delivery oil path 821 and a second delivery oil path 822. Specifically, hydraulic oil is injected into one side of the cavity through the first oil guide passage, and meanwhile hydraulic oil is also injected into the other side of the cavity through the second oil guide passage, so that the pressures of the two ends of the double-end piston body in the cavity are the same, the double-end piston body is kept balanced in the cavity, and an initial preparation state is achieved.
In this embodiment, only one switching type double clutch is arranged on the input shaft, so that only two oil passages are needed to convey hydraulic oil respectively. When the switching type double clutch is subjected to clutch operation, hydraulic oil is input into a cavity of the switching type double clutch through the shell oil path, the input shaft oil path and the clutch oil path, and then the hydraulic oil is conveyed.
Specifically, two oil passages are arranged among the shell, the input shaft and the switching type double clutch. The double-hole conveying oil way of the shell oil way is provided with two oil ways, hydraulic oil is conveyed to the input shaft through the double-hole conveying oil way, the input shaft oil way is respectively conveyed through the first conveying oil way and the second conveying oil way and is respectively communicated and connected with the two oil ways of the double-hole conveying oil way, the clutch oil way is communicated and connected with the first conveying oil way through the first oil guide way, the second oil guide way is communicated and connected with the second conveying oil way, the hydraulic oil is respectively conveyed to the two sides of the cavity, and the purpose of conveying the hydraulic oil into the switching type double clutch from the shell is achieved.
Two annular oil inlet grooves are formed in the connecting position of the double-hole oil conveying path of the shell oil path and the input shaft oil path, two sides of each oil inlet groove are sealed through sealing rings, namely the sealing rings are located between the shell and the input shaft for sealing, and each double-hole oil conveying path is provided with one oil inlet groove for conducting connection. And between the input shaft and the inner hole of the switching type double clutch, the input shaft is connected in an interference fit manner, and meanwhile, an annular oil outlet groove is adopted, so that an oil path of the input shaft is respectively communicated with the first oil guide channel and the second oil guide channel, and then hydraulic oil is respectively conveyed to two sides of the cavity, and the purpose of controlling the double-end piston body to move in the cavity through the oil pressure of the hydraulic oil is achieved.
In this embodiment, the first clutch block is connected to the first input gear of the input shaft, and the second clutch block is connected to the second input gear of the input shaft, so that the switching dual clutch can perform mutually exclusive clutch control on the first gear pair or the second gear pair of the input shaft. In this embodiment, for example, the first oil guiding passage pushes the double-headed piston body to move toward the second input gear after oil enters, and the second oil guiding passage pushes the double-headed piston body to move toward the first input gear after oil enters.
And hydraulic oil pumps can be used for conveying the hydraulic oil in the oil tank to different pipelines in the oil circuit in the transmission. For example, when the first gear pair needs to be in the closed state, the hydraulic oil is conveyed through the other oil passage of the double-hole conveying oil passage, the second conveying oil passage of the input shaft oil passage and the second oil guide passage, so that the double-end piston body of the switching type double clutch moves towards the first gear pair. The first friction plate group is pushed by the double-end piston body to perform combination friction, and power is transmitted to the first input gear from the input shaft through the first clutch block, so that the first gear pair is in a combined state, and the power can be transmitted to the output shaft from the input shaft due to the fact that the first input gear is meshed with the first output gear. And at the moment, the switching type double clutch and the second gear pair are in an off state.
In a similar way, when the second gear pair is in a closed state, the hydraulic oil is conveyed through the routes of one oil duct of the double-hole conveying oil duct, the first conveying oil duct of the input shaft oil duct and the first oil guide duct, so that the double-end piston body of the switching type double clutch moves towards the second gear pair. The second friction plate group is pushed by the double-end piston body to perform combination friction, and power is transmitted to the second output gear from the input shaft through the second clutch block, so that the second gear pair is in a combined state, namely the second input gear is meshed with the second output gear, and the power is transmitted to the output shaft from the input shaft. At this time, the switching type double clutch and the first gear pair are in a separated state.
Specifically, in this embodiment, the oil inlet of the first oil delivery path is communicated with one oil passage of the dual-hole oil path, the oil outlet of the first oil delivery path is communicated with the first oil guide passage, the oil inlet of the second oil delivery path is communicated with the other oil passage of the dual-hole oil path, and the oil outlet of the second oil delivery path is communicated with the second oil guide passage. Therefore, the switching clutch has two oil conveying pipelines which are independent of each other and are used for conveying hydraulic oil.
In this embodiment, a first sealing ring 823 is disposed on the input shaft on both sides of each oil inlet of the oil path of the input shaft. Namely, a first sealing ring is arranged on both sides of the oil inlet of the first oil conveying path and the oil inlet of the second oil conveying path. If the first oil conveying path and the second oil conveying path are arranged on the input shaft side by side, a first sealing ring, an oil inlet of the first oil conveying path, a first sealing ring, an oil inlet of the second oil conveying path and a first sealing ring can be arranged on the input shaft in sequence. The sealed connection between the shell oil way and the input oil way is achieved, and the leakage of hydraulic oil is avoided. And on the input shaft section at the oil outlet of the first oil conveying path and the oil outlet of the second oil conveying path, the input shaft section can be matched with an inner hole of the clutch in an interference fit mode, so that the condition of oil leakage cannot occur between the input shaft oil path and the clutch oil path, and the condition of oil leakage between oil conveying pipelines is also avoided.
The first sealing ring in the embodiment can be an opening sealing ring, has high wear-resistant characteristic, can ensure the service life of the input shaft or the output shaft, and reduces the maintenance or repair cost of the transmission.
All adopt in the oil circuit structure of transmission in this embodiment to be full of hydraulic oil state work, consequently only need toward the cavity in to hydraulic oil pressurization back, can make the oil pressure in the cavity unbalance, and then the drive double-end piston body removes in the cavity to drive friction through the double-end piston body to first or second friction piece group and combine, reach the effect of separation and reunion. The preparation time for driving the double-head piston body to move is zero, the effect of waiting for clutch switching when the time is zero is achieved, and the waiting time of the clutch structure during clutch switching is shortened.
In this embodiment, the first friction plate set 511 and the second friction plate set 521 are arranged in the same structure, and the components thereof may be a friction plate and a steel plate or a friction plate and a friction plate, and the friction plate and the steel plate are taken as an example in this embodiment for illustration. Installing a friction plate on the clutch block, and installing a steel sheet on the outer side surface of the cavity; on the contrary, the friction plate can be arranged on the outer side surface of the cavity, the steel sheet is arranged on the clutch block, and then the mutual contact friction effect between the friction plate and the steel sheet is formed, so that the gear connected to the other end of the clutch block is subjected to clutch operation.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.
Claims (8)
1. The utility model provides an off-axis formula keeps off derailleur variable speed control system, includes the controller, the controller is connected with off-axis formula two keeps off the derailleur, its characterized in that:
the eccentric shaft type two-gear transmission comprises an input shaft, an output shaft, a switching type double clutch, a shell, an oil path structure and an oil path control system;
the central line of the input shaft and the central line of the output shaft are arranged in parallel, the central lines of the input shaft and the output shaft are arranged in parallel, the input end of the input shaft and the output end of the output shaft respectively penetrate through two opposite side walls of the shell and are arranged in the shell, the input end of the input shaft protrudes out of the shell, and the output end of the output shaft protrudes out of the shell;
the switching type double clutch is arranged on an input shaft, the input shaft is provided with a first input gear and a second input gear, the output shaft is provided with a first output gear and a second output gear, the first input gear and the first output gear are meshed with each other, the second input gear and the second output gear are meshed with each other, the switching type double clutch is positioned between the first input gear and the second input gear, and the switching type double clutch is used for controlling the first input gear or the second input gear and the input shaft to perform mutual exclusion clutch operation;
the oil circuit structure comprises a shell oil circuit, an input shaft oil circuit and a clutch oil circuit, wherein the shell oil circuit is arranged in the shell, the input shaft oil circuit is arranged in the input shaft, and the shell oil circuit is communicated with the input shaft oil circuit; the clutch oil circuit is arranged in the switching type double clutch, and the input shaft oil circuit is communicated with the clutch oil circuit;
the oil way control system comprises a power unit and a regulating and controlling unit, wherein the output end of the power unit is connected with an oil way pipeline of the shell, the regulating and controlling unit is arranged on a pipeline between the oil way of the shell and the power unit, and the regulating and controlling unit is used for controlling the hydraulic oil pressure at two ends of the switching type double clutch;
the controller comprises an analog quantity output unit, and the analog quantity output unit is connected with the regulating and controlling unit; the controller is used for acquiring gear information, and controlling the analog quantity output unit to output different analog quantity control information to the regulation and control unit according to the control corresponding relation between the prestored gear information and the analog quantity output unit.
2. The shift control system of an off-axis two-gear transmission according to claim 1, wherein the pre-stored gear information and analog output unit control relationship comprises:
the prestored gear information is neutral gear, and the analog quantity output unit outputs the same analog quantity control information to the regulating and controlling unit, so that the hydraulic oil pressures at two ends of the clutch controlled by the regulating and controlling unit are the same.
3. The system according to claim 1, wherein said housing oil path is a dual-hole oil path, an oil inlet of said dual-hole oil path is disposed on an outer side surface of said housing, and an oil outlet of said dual-hole oil path is disposed on an inner surface of a shaft hole of said housing input shaft.
4. The gear shift control system of an off-axis two speed transmission of claim 3, wherein the clutch oil path includes a first oil guide and a second oil guide;
the first oil guide channel is arranged between one side of the piston inner cavity of the clutch and the inner side surface of the inner hole of the clutch, and the second oil guide channel is arranged between the other side of the piston inner cavity of the clutch and the inner side surface of the inner hole of the clutch.
5. The gear shift control system of an off-axis two-gear transmission according to claim 4, wherein the regulating unit comprises a first proportional valve, a second proportional valve, a first pressure detector and a second pressure detector, the first proportional valve is arranged on a pipeline between a housing oil path where the first oil guide path is located and the power unit, an oil return port of the first proportional valve is connected with the oil storage tank pipe, the second proportional valve is arranged on a pipeline between the housing oil path where the second oil guide path is located and the power unit, and an oil return port of the second proportional valve is connected with the oil storage tank pipe;
the first pressure detector is arranged on a pipeline between the first proportional valve and the switching double clutch, and the second pressure detector is arranged on a pipeline between the second proportional valve and the switching double clutch.
6. The shift control system for an off-axis two-speed transmission of claim 4, wherein the switching double clutch includes a first clutch, a second clutch, and a piston unit;
the piston unit comprises a double-end piston body and a cavity, the cross section of the double-end piston body is I-shaped, one end of the double-end piston body is arranged in the cavity, the other end of the double-end piston body is positioned outside the cavity, the oil outlet of the first oil guide channel is arranged on one side of the cavity, and the oil outlet of the second oil guide channel is arranged on the other side of the cavity;
the first clutch block comprises a first friction plate group, the second clutch block comprises a second friction plate group, the first friction plate group is located on one side of the other end of the double-end piston body, the second friction plate group is located on the other side of the other end of the double-end piston body, the first clutch block and the second clutch block are respectively arranged on gear pairs on two sides, and the double-end piston body is used for driving one of the first friction plate group or the second friction plate group to be combined and the other to be separated.
7. The system according to claim 4, wherein said input shaft oil path comprises a first oil feeding path and a second oil feeding path, an oil inlet of said first oil feeding path is connected to one oil path of said dual-hole oil path, an oil outlet of said first oil feeding path is connected to said first oil guide path, an oil inlet of said second oil feeding path is connected to the other oil path of said dual-hole oil path, and an oil outlet of said second oil feeding path is connected to said second oil guide path.
8. The shift control system of an off-axis two-gear transmission as defined in claim 1, wherein the analog output unit is a current output unit or a voltage output unit.
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| CN201911199809.0A CN111322391B (en) | 2019-11-29 | 2019-11-29 | Speed change control system of off-axis two-gear transmission |
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| CN111322391B (en) | 2021-09-14 |
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