CN111322392B - Two keep off derailleur variable speed control system - Google Patents
Two keep off derailleur variable speed control system Download PDFInfo
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- CN111322392B CN111322392B CN201911200316.4A CN201911200316A CN111322392B CN 111322392 B CN111322392 B CN 111322392B CN 201911200316 A CN201911200316 A CN 201911200316A CN 111322392 B CN111322392 B CN 111322392B
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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
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
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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
- F16H61/0021—Generation or control of line pressure
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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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 a two-gear transmission, which comprises a controller, wherein the controller is connected with the two-gear transmission, and the two-gear transmission comprises an input shaft, an output shaft, a middle shaft, a switching type double clutch, a shell, an oil path structure and an oil path 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 a two-gear transmission speed change control system.
Background
The two-gear transmission can realize the change of two gears, and different torques input before and after can be changed through different gear changes. 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, a two-gear transmission speed change control system is needed to be provided for solving the problem that the existing transmission needs automatic quick gear shifting.
In order to achieve the above object, the inventor provides a controller, the controller is connected with a two-gear transmission, the two-gear transmission comprises an input shaft, an output shaft, an intermediate 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 a collinear way, 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 on the shell, the input shaft is in transmission connection with the input end of the intermediate shaft, the output end of the intermediate shaft is in transmission connection with the output shaft, and the central line of the intermediate shaft is arranged in the shell in parallel with the central line of the input shaft;
the switching type double clutch is arranged on the input shaft or the output shaft, the switching type double clutch is positioned between two adjacent gear pairs on the input shaft and/or the output shaft, and the switching type double clutch is used for controlling the gear pairs on two sides of the switching type double clutch to perform mutual exclusion clutch operation;
the oil circuit structure comprises a shell oil circuit, a shaft oil circuit and a clutch oil circuit, wherein the shell oil circuit is arranged in the shell, the shaft oil circuit is arranged in the input shaft or the output shaft, one branch of the shell oil circuit is communicated with a first oil conveying circuit of the shaft oil circuit, and the other branch of the shell oil circuit is communicated with a second oil conveying circuit of the shaft oil circuit; the clutch oil circuit is arranged in a cavity of the switching type double clutch, and a first delivery oil circuit of the shaft oil circuit is communicated with a first oil guide channel of the clutch oil circuit; the second delivery oil way of the shaft oil way is communicated with the second oil guide way of the clutch oil way;
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 pressure input by hydraulic oil of the first oil guide way and the second oil guide way 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.
Further, the regulation and control 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 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 shell oil path where the second oil guide path is located and the power unit, 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 type double clutch, and the second pressure detector is arranged on a pipeline between the second proportional valve and the switching type 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 piece comprises a first friction piece group, the second clutch piece comprises a second friction piece group, the first friction piece group is located on one side of the other end of the double-end piston body, the second friction piece group is located on the other side of the other end of the double-end piston body, the first clutch piece and the second clutch piece are arranged on the gear pair, and the double-end piston body is used for driving one of the first friction piece group or the second friction piece group to be combined and the other friction piece group to be separated.
Further, the intermediate shaft is provided with a plurality of intermediate shafts, and the plurality of intermediate shafts are arranged in the shell in a circumferential array on the central axis of the input shaft.
Further, the input shaft is provided with a first input gear, the output shaft is provided with a first output gear, and the switching double clutch is arranged on the input shaft or the output shaft between the first input gear and the first output gear.
Further, the intermediate shaft is provided with a second input gear and a second output gear, the first input gear and the second input gear are arranged in a meshed mode, and the first output gear and the second output gear are arranged in a meshed mode.
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 a two speed transmission according to an exemplary embodiment;
FIG. 3 is a schematic diagram of a two speed transmission according to an exemplary embodiment;
FIG. 4 is a cross-sectional view of a two speed transmission according to an embodiment;
fig. 5 is a structural view of a two speed transmission according to an embodiment;
fig. 6 is a partial schematic view of a two speed transmission according to an embodiment.
Description of reference numerals:
1. a controller; 2. A second gear speed changer; 3. A CPU; 4. An analog quantity output unit;
10. an input shaft; 11. A first input gear;
20. an output shaft; 12. A first output gear;
30. an intermediate shaft; 31. A second input gear; 32. A second output gear;
40. a switching type double clutch;
41. a first clutch block; 411. A first friction plate set;
42. a second clutch block; 421. A second friction plate set;
43. a piston unit;
431. a double-ended piston body; 432. A cavity;
50. a housing;
60. an oil path structure; 61. A housing oil passage; 62. A shaft oil passage; 63. A clutch oil path;
631. a first oil guide passage; 632. A second oil guide passage;
621. a first delivery oil path; 622. A second delivery oil path; 623. A seal ring;
70. an oil circuit control system; 71. A power unit; 72. A regulatory unit; 73. An oil storage tank;
74. a filter;
721. a first proportional valve; 722. A second proportional valve; 723. A first pressure detector;
724. 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 two-gear transmission speed change control system, including a controller 1, where the controller 1 is connected to a two-gear transmission 2, and the two-gear transmission 2 includes an input shaft 10, an output shaft 20, an intermediate shaft 30, a switching dual clutch 40, a housing 50, an oil path structure 60, and an oil path control system 70. The oil passage control system includes a power unit 71, a regulation unit 72 including a first proportional valve 721, a second proportional valve 722, a first pressure detector 723, and a second pressure detector 724, a reservoir 73, and a filter 74. 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 one side oil feed in the cavity, can promote the double-end piston body and remove for the cavity space of this side increases and increases the oil pressure, and the space of the opposite side in the relative cavity reduces, then needs to carry out the oil return. The switching type double clutch is provided with two independent oil supply channels, so that two independent branch pipelines are needed to convey hydraulic oil outside the shell.
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 regulation unit in this embodiment includes a first proportional valve 721, a second proportional valve 722, a first pressure detector 723, and a second pressure detector 724, and the first proportional valve and the second proportional valve 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 independent oil circuit where the first oil guide channel is located as an example, when pumping hydraulic oil, the gear pump is started to pump the hydraulic oil in the oil storage tank to the filter, and the filter filters large-particle impurities in the hydraulic oil, such as dust, gravel or oil blocks. And then is conveyed to each branch pipeline through a main one-way valve. And the branch pipeline conveys the hydraulic oil to the oil path structure through the branch one-way valve, the first proportional valve and the first pressure detector, and then conveys the hydraulic oil to one side in the cavity of the switching type double clutch through the second 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 another branch one-way valve, a second proportional valve and a second pressure detector on another 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 shaft oil path and the first clutch oil 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 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. Therefore, the aim of controlling the switching type double clutch with zero waiting is achieved.
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 axle head of input shaft can establish through the bearing housing in this embodiment with the terminal surface dead eye of output shaft, and then reaches the effect of the central line collineation of input shaft and output shaft, and the input of input shaft and the output of output shaft then run through the relative both sides wall of casing respectively and install on the casing, the input of input shaft and jackshaft is connected in the transmission, the output and the output shaft transmission of jackshaft are connected, the central line of jackshaft is on a parallel with the central line setting of input shaft in the casing.
The input shaft is provided with a first input gear 11, the output shaft is provided with a first output gear 12, and the intermediate shaft is provided with a second input gear 31 and a second output gear 32. The first input gear and the second input gear are meshed with each other to form a first gear pair, and the first output 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 or an output shaft between the first input gear and the first output 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. 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, taking the example that the switching type double clutch is arranged on the input shaft, the first route is as follows: the power of the input shaft can be directly transmitted to the output shaft through the second clutch block; the corresponding second route is: the input shaft transmits power to the intermediate shaft through the first gear pair and then transmits the power to the output shaft through the second gear pair, and the effect of changing two gears is achieved.
The switching type double clutch in the embodiment comprises a first clutch block 41, a second clutch block 42 and a piston unit 43, wherein the piston unit comprises a double-end piston body 431 and a cavity 432, 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 by 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 achieved.
In this embodiment, the oil path structure includes a housing oil path 61, a shaft oil path 62, and a clutch oil path 63, the housing oil path is a dual-hole oil path, the dual-hole oil path has two mutually independent oil paths, the clutch oil path includes a first oil guide channel 631 and a second oil guide channel 632, the shaft oil path includes a first oil path 621 and a second oil path 622, and the shaft oil path may be disposed on the input shaft or the output shaft to form an input shaft oil path or an output shaft oil path. 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, the switching double clutches are mounted on the input shaft, so that only two oil ducts are needed to convey hydraulic oil respectively, the number of the oil ducts to be formed can be calculated by twice the number of the switching double clutches, and mutually exclusive clutch control can be performed on the switching double clutches independently. 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 shaft oil path and the clutch oil path, and then the hydraulic oil is conveyed.
Specifically, the shaft oil passage is provided in the input shaft as an example. The double-hole oil conveying path is provided with two oil paths, so that hydraulic oil is conveyed to the input shaft through the double-hole oil conveying path, the shaft oil path is respectively conveyed through the first oil conveying path and the second oil conveying path and is respectively communicated and connected with the two oil paths of the double-hole oil conveying path, the clutch oil path is communicated and connected with the first oil conveying path through the first oil guide path, the second oil guide path is communicated and connected with the second oil conveying path, 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 through the shell is achieved.
Two annular oil inlet grooves are formed in the connecting position of the double-hole oil conveying path and the shaft oil path and on the input shaft at the connecting position, two sides of each oil inlet groove are sealed through a sealing ring, namely the sealing ring is positioned 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 the shaft oil path is respectively communicated with the first oil guide channel and the second oil guide channel, and then the hydraulic oil is respectively conveyed to two sides of the cavity, and the purpose of controlling the double-head 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 first output gear, so that the switching type dual clutch can perform mutually exclusive clutch control on the first gear pair of the input shaft and the second gear pair of the output shaft. In this embodiment, for example, the first oil guiding passage pushes the double-end piston body to move toward the first output gear after oil enters, and the second oil guiding passage pushes the double-end 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 first dual-hole conveying oil passage, the second conveying oil passage of the shaft oil passage and the second oil guide passage, so that the double-head 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 combined 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, namely the first input gear is meshed with the second input gear, and the power is transmitted to the intermediate shaft from the input shaft. And at the moment, the switching type double clutch and the second gear pair are in an off state.
Similarly, 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 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 set is pushed by the double-end piston body to perform combination friction, power is transmitted to the output shaft from the input shaft through the second clutch block, and the power is directly 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.
In this embodiment, for example, the shaft oil passage is provided on the input shaft, and the seal ring 623 is provided on the input shaft on both sides of each oil inlet of the shaft oil passage. Namely, a 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, the sealing ring, the oil inlet of the first oil conveying path, the sealing ring, the oil inlet of the second oil conveying path and the 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 oil leakage condition between the shaft oil path and the clutch oil path can be avoided, and the oil mixing condition between the oil conveying paths can be avoided. The sealing ring in the embodiment can be an opening sealing ring, has the characteristic of high wear resistance, can ensure the service life of the input shaft or the output shaft, and reduces the maintenance cost of the transmission.
In this embodiment, the oil path structure of the transmission is filled with hydraulic oil, so that the hydraulic oil in the cavity is unbalanced only after the hydraulic oil is injected into the cavity again, and the double-end piston body is driven to move in the cavity, and the first or second friction plate set is driven to be frictionally combined through the double-end piston body, so as to achieve the clutch effect. 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 411 and the second friction plate set 421 have the same structure, and the components thereof may be a friction plate and a steel plate or a friction plate and a friction plate, which are described in this embodiment by taking a friction plate and a steel plate as an example. 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.
In the present embodiment, the number of the intermediate shafts is plural, and may be two, three, or four, and so on. The multiple intermediate shafts are circumferentially arrayed on the central axis of the input shaft or the output shaft, for example, the two intermediate shafts can be respectively arranged at the upper and lower positions of the input shaft and the output shaft, the multiple intermediate shafts have the same structure, and are provided with gears with the same tooth number and the same tooth width. Therefore, the loads of the input shaft and the output shaft can be distributed through the plurality of intermediate shafts, and the bending strength of the input shaft, the intermediate shafts and the output shaft is enhanced, so that the bearing capacity of the input shaft and the output shaft is improved, and the purpose of improving the loads is achieved.
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 invention.
Claims (10)
1. The utility model provides a two keep off derailleur variable speed control system, includes the controller, the controller is connected with two keep off derailleurs, its characterized in that:
the two-gear transmission comprises an input shaft, an output shaft, an intermediate 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 a collinear way, 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 on the shell, the input shaft is in transmission connection with the input end of the intermediate shaft, the output end of the intermediate shaft is in transmission connection with the output shaft, and the central line of the intermediate shaft is arranged in the shell in parallel with the central line of the input shaft;
the switching type double clutch is arranged on the input shaft or the output shaft, the switching type double clutch is positioned between two adjacent gear pairs on the input shaft and/or the output shaft, and the switching type double clutch is used for controlling the gear pairs on two sides of the switching type double clutch to perform mutual exclusion clutch operation;
the oil circuit structure comprises a shell oil circuit, a shaft oil circuit and a clutch oil circuit, wherein the shell oil circuit is arranged in the shell, the shaft oil circuit is arranged in the input shaft or the output shaft, one branch of the shell oil circuit is communicated with a first oil conveying circuit of the shaft oil circuit, and the other branch of the shell oil circuit is communicated with a second oil conveying circuit of the shaft oil circuit; the clutch oil circuit is arranged in a cavity of the switching type double clutch, and a first delivery oil circuit of the shaft oil circuit is communicated with a first oil guide channel of the clutch oil circuit; the second delivery oil way of the shaft oil way is communicated with the second oil guide way of the clutch oil way;
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 pressure input by hydraulic oil of the first oil guide way and the second oil guide way 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;
the switching double clutch comprises a first clutch block, a second clutch block and a piston unit; the piston unit comprises a double-end piston body and a cavity, 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 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 positioned on one side of the other end of the double-end piston body, the second friction plate group is positioned on the other side of the other end of the double-end piston body, the first clutch block and the second clutch block are arranged on a gear pair, and the double-end piston body is used for driving one group of the first friction plate group or the second friction plate group to be combined and the other group to be separated.
2. The two-gear transmission shift control system according to claim 1, wherein the pre-stored gear information and analog output unit control correspondence 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.
3. The two-gear transmission speed change control system according to claim 1, wherein the housing oil path is a dual-hole oil conveying path, an oil inlet of the dual-hole oil conveying path is arranged on an outer side surface of the housing, and an oil outlet of the dual-hole oil conveying path is arranged on an inner surface of a shaft hole of the input shaft of the housing.
4. The two speed transmission shift control system according to claim 3, wherein said clutch oil passage includes 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.
5. The two-gear transmission speed change control system according to claim 4, wherein the regulation and control 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 a housing oil path where the second oil guide path is located and the power unit, 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 type double clutch, and the second pressure detector is arranged on a pipeline between the second proportional valve and the switching type double clutch.
6. A two gear transmission shift control system as set forth in claim 4,
the cross section of the double-end piston body is I-shaped, the oil outlet of the first oil guide channel is formed in one side of the cavity, and the oil outlet of the second oil guide channel is formed in the other side of the cavity.
7. A two speed transmission shift control system as set forth in claim 1 wherein said plurality of intermediate shafts are disposed in a circumferential array about a central axis of said input shaft within said housing.
8. A two speed transmission shift control system as claimed in claim 1 wherein said input shaft is provided with a first input gear and said output shaft is provided with a first output gear, said shift-type dual clutch being provided on either the input shaft or the output shaft between the first input gear and the first output gear.
9. A two speed transmission shift control system as claimed in claim 8 wherein said countershaft is provided with a second input gear and a second output gear, said first input gear being disposed in meshing engagement with said second input gear and said first output gear being disposed in meshing engagement with said second output gear.
10. The two gear transmission shift control system according to claim 1, wherein the analog output unit is a current output unit or a voltage output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200316.4A CN111322392B (en) | 2019-11-29 | 2019-11-29 | Two keep off derailleur variable speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200316.4A CN111322392B (en) | 2019-11-29 | 2019-11-29 | Two keep off derailleur variable speed control system |
Publications (2)
| Publication Number | Publication Date |
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| CN111322392A CN111322392A (en) | 2020-06-23 |
| CN111322392B true CN111322392B (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911200316.4A Active CN111322392B (en) | 2019-11-29 | 2019-11-29 | Two keep off derailleur variable speed control system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111322391B (en) * | 2019-11-29 | 2021-09-14 | 福建中维动力科技股份有限公司 | Speed change control system of off-axis two-gear transmission |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545469A (en) * | 1983-05-12 | 1985-10-08 | Yanmar Diesel Engine Co., Ltd. | Cone clutch |
| JPS59188326U (en) * | 1983-05-31 | 1984-12-13 | ヤンマーディーゼル株式会社 | cone clutch |
| CN2044300U (en) * | 1988-01-26 | 1989-09-13 | 刘忠一 | Two-way liquid controlled friction clutch |
| CN201687901U (en) * | 2010-05-27 | 2010-12-29 | 亢兆兆 | Gear transmission mechanism and gear transmission system |
| CN104343959A (en) * | 2013-07-23 | 2015-02-11 | 重庆长安汽车股份有限公司 | Hydraulic control device for dual-clutch automatic transmission |
| CN205956322U (en) * | 2016-08-31 | 2017-02-15 | 韶能集团韶关宏大齿轮有限公司 | Two grades of double -clutch gearbox |
| CN110259892A (en) * | 2019-06-27 | 2019-09-20 | 贺宏良 | More bidirectional clutch automatic gear-box and the car body that the gearbox is set |
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2019
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