CN111322359A - Transmission with oil circuit structure - Google Patents

Transmission with oil circuit structure Download PDF

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Publication number
CN111322359A
CN111322359A CN201910622707.9A CN201910622707A CN111322359A CN 111322359 A CN111322359 A CN 111322359A CN 201910622707 A CN201910622707 A CN 201910622707A CN 111322359 A CN111322359 A CN 111322359A
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CN
China
Prior art keywords
oil
clutch
path
oil path
gear
Prior art date
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Pending
Application number
CN201910622707.9A
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Chinese (zh)
Inventor
罗南昌
雷作钊
罗天生
周荣斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Zhongwei Power Technology Co Ltd
Original Assignee
Fujian Zhongwei Power Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Zhongwei Power Technology Co Ltd filed Critical Fujian Zhongwei Power Technology Co Ltd
Priority to CN201910622707.9A priority Critical patent/CN111322359A/en
Publication of CN111322359A publication Critical patent/CN111322359A/en
Pending legal-status Critical Current

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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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
    • 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
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • 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
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
    • F16H3/0915—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft with coaxial input and output shafts
    • 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
    • F16H61/0262—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 hydraulic
    • F16H61/0265—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 hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention provides a transmission with an oil path structure, which comprises an input shaft, an output shaft, an intermediate shaft, a first switching type double clutch, a second switching type double clutch, a shell and an oil path structure, wherein the oil path structure comprises a shell oil path, an input shaft oil path, an output shaft oil path, a first clutch oil path and a second clutch oil path. The first switching type double clutch conveys hydraulic oil through a shell oil path, an input shaft oil path and a first clutch oil path, and the first switching type double clutch performs clutch operation; in a similar way, the second switching type double clutch conveys hydraulic oil through the shell oil path, the output shaft oil path and the second clutch oil path of the oil path structure to perform clutch operation. The oil circuit structure is filled with hydraulic oil, so that the oil pressure balance in the piston cavity of the switching type double clutch can be broken only by adjusting a small amount of hydraulic oil, then the switching type double clutch is driven to perform clutch operation, and the effect of waiting for clutch switching at zero time is achieved.

Description

Transmission with oil circuit structure
Technical Field
The invention relates to the field of transmissions, in particular to a transmission with an oil way structure.
Background
The transmission is a set of transmission devices for coordinating the rotational speed of the engine and/or the motor with the actual running speed of the wheels for optimum performance of the engine and/or the motor. The transmission may produce different gear ratios between the engine and/or the electric machine and the wheels during vehicle travel. However, in the existing four-speed vehicle, the four-speed transmission needs to be engaged by more than or equal to four gear sets, which results in larger volume of the existing transmission. And the power transmission route of current four-gear speed changer is not only, and gearshift is mostly synchronous ware or pulls out the fork structure, when switching the gear shifting, and the switching time clearance is longer.
Disclosure of Invention
Therefore, a compact transmission structure is needed to be provided, and the problem that the switching time gap is long when the gears of the existing transmission are changed is solved.
In order to achieve the above object, the inventor provides a transmission with an oil path structure, which includes an input shaft, an output shaft, an intermediate shaft, a first switching type double clutch, a second switching type double clutch, a housing and an oil path structure; 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 in the shell, the input shaft is in transmission connection with the input end of an 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 first switching type double clutch is arranged on the input shaft, the second switching type double clutch is arranged on the output shaft, the first switching type double clutch is positioned between two adjacent gear pairs on the input shaft and the output shaft, the second switching type double clutch is positioned between two adjacent gear pairs on the input shaft and the output shaft, and the first switching type double clutch and the second switching type double clutch are used for controlling the gear pairs on two sides of the switching type double clutch to carry out mutual exclusion clutch operation; the oil circuit structure comprises a shell oil circuit, an input shaft oil circuit, an output shaft oil circuit, a first clutch oil circuit and a second 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 a branch of the shell oil circuit is communicated with the input shaft oil circuit; the output shaft oil path is arranged in the output shaft, and the other branch of the shell oil path is communicated with the output shaft oil path; the first clutch oil path is arranged in the first switching clutch, and the input shaft oil path is communicated with the first clutch oil path; the second clutch oil path is arranged in the second switching clutch, and the output shaft oil path is communicated with the second clutch oil path.
Furthermore, the housing oil path comprises a first double-hole conveying oil path and a second double-hole conveying oil path, an oil inlet of the first double-hole conveying oil path and an oil inlet of the second double-hole conveying oil path are arranged on the outer side surface of the housing, an oil outlet of the first double-hole conveying oil path is arranged on the inner surface of the shaft hole of the housing input shaft, and an oil outlet of the second double-hole conveying oil path is arranged on the inner surface of the shaft hole of the housing output shaft.
Further, the first 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; the second clutch oil path is provided in the same configuration as the first clutch oil path.
Further, the first switching double clutch includes 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 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 of the first friction plate group or the second friction plate group to be separated; the second switching clutch is arranged in the same structure as the first switching clutch.
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 first 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 first double-hole oil path, and an oil outlet of the second conveying oil path is communicated with the second oil guide path.
Furthermore, the output shaft oil path comprises a third conveying oil path and a fourth conveying oil path, an oil inlet of the third conveying oil path is communicated with one oil path of the second double-hole oil path, an oil outlet of the third conveying oil path is communicated with the first oil guide path of the second clutch oil path, an oil inlet of the fourth conveying oil path is communicated with the other oil path of the second double-hole oil path, and an oil outlet of the fourth conveying oil path is communicated with the second oil guide path of the second clutch oil path.
Furthermore, a first sealing ring is arranged on the input shaft on two sides of each oil inlet of the input shaft oil circuit, and a second sealing ring is arranged on the input shaft on two sides of each oil inlet of the output shaft oil circuit.
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 gear transmission device further comprises a common gear, the input shaft is provided with a first input gear, the output shaft is provided with a first output gear, and the common gear is arranged on the input shaft and/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, an input output gear and a second output gear; the first input gear and the second input gear are meshed with each other, the first output gear and the second output gear are meshed with each other, and the common gear and the input and output gears are meshed with each other; the first switching double clutch is disposed between the first input gear and the common gear, and the second switching double clutch is disposed between the common gear and the first output gear.
Different from the prior art, the transmission of the technical scheme controls the gear shifting through the switching type double clutch, so that the power can be output through the input shaft, the intermediate shaft and the output shaft, or directly output through the input shaft and the output shaft. The first switching type double clutch conveys hydraulic oil through a shell oil path, an input shaft oil path and a first clutch oil path, so that the first switching type double clutch performs clutch operation; in a similar way, the second switching type double clutch conveys hydraulic oil through the shell oil path, the output shaft oil path and the second clutch oil path of the oil path structure, so that clutch operation is performed. The oil circuit structure is filled with hydraulic oil, so that the oil pressure balance in the piston cavity of the switching type double clutch can be broken only by adjusting a small amount of hydraulic oil, then the switching type double clutch is driven to perform clutch operation, and the effect of waiting for clutch switching at zero time is achieved.
Drawings
FIG. 1 is a cross-sectional view of a transmission having an oil path structure according to an exemplary embodiment;
FIG. 2 is a block diagram of a transmission having an oil path structure according to an exemplary embodiment;
FIG. 3 is a partial schematic illustration of a transmission having an oil circuit configuration according to an exemplary embodiment;
description of reference numerals:
10. an input shaft; 11. a first input gear;
20. an output shaft; 21. a first output gear;
30. a common gear;
40. an intermediate shaft; 41. a second input gear; 42. an input output gear;
43. second output gear
50. A first switching 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;
60. a second switching double clutch;
70. a housing;
80. an oil path structure; 81. a housing oil passage; 82. an input shaft oil path; 83. an output shaft oil path;
84. a first clutch oil path; 85. a second clutch oil path;
811. a first double-hole oil delivery path; 812. a second double-hole oil delivery path;
821. a first delivery oil path; 822. a second delivery oil path; 823. a first seal ring;
831. a third oil delivery path; 832. a fourth delivery oil path; 833. a second seal ring;
841. a first oil guide passage; 842. a second oil guide passage;
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, 2 and 3, the present embodiment provides a transmission with an oil path structure, which includes an input shaft 10, an output shaft 20, a common gear 30, a countershaft 40, a first switching dual clutch 50, a second switching dual clutch 60, a housing 70 and an oil path structure 80. The central line of the input shaft and the central line of the output shaft are collinear, 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 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, the central line of the intermediate shaft is parallel to the central line of the input shaft and is arranged in the shell, and shafts, gears, clutches and the like in the transmission can be protected through the shell.
The input shaft is provided with a first input gear 11, the output shaft is provided with a first output gear 21, the intermediate shaft is provided with a second input gear 41, an input output gear 42 and a second output gear 43, and a common gear is provided on the input shaft and/or the output shaft between the first input gear and the first output gear. The first input gear and the second input gear are meshed with each other to form a first gear pair, the common gear and the input and output gear are meshed with each other to form a second gear pair, and the first output gear and the second output gear are meshed with each other to form a third gear pair.
The first switching type double clutch is arranged on an input shaft between the first input gear and the common gear, and mutually exclusive clutch operation is carried out on the first gear pair and the second gear pair; in a similar way, the second switching type double clutch is arranged between the common gear and the first output gear, and mutually exclusive clutch operation is carried out on the second gear pair and the third 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, four different routes of power transmission modes can be carried out on the first gear pair, the second gear pair and the third gear pair through the first switching type double clutch and the second switching type double clutch.
Specifically, since the first switching double clutch and the second switching double clutch are both connected to the second gear pair, the first route is: the power of the input shaft can be directly transmitted to the output shaft through the second gear pair; 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 third gear pair; the third route is: the power of the input shaft is transmitted to the intermediate shaft through the second gear pair and then transmitted to the output shaft through the third gear pair; the fourth 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. The effect of changing four gears of three pairs of gear pairs is achieved.
In this embodiment, the first switching type dual clutch includes a first clutch piece 51, a second clutch piece 52 and a piston unit 53, the piston unit includes 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 installed in the cavity, and the double-end piston body is controlled to move in the cavity by inputting hydraulic oil, thereby achieving the clutch operation that one end of the switching type dual clutch is in a closed state and the other end of the switching type dual clutch.
The oil path structure in this embodiment includes a housing oil path 81, an input shaft oil path 82, an output shaft oil path 83, a first clutch oil path 84, and a second clutch oil path 85, the housing oil path includes a first dual-hole delivery oil path 811 and a second dual-hole delivery oil path 812, the first clutch oil path includes a first oil guide path 841 and a second oil guide path 842, the input shaft oil path includes a first delivery oil path 821 and a second delivery oil path 822, and the output shaft oil path includes a third delivery oil path 831 and a fourth delivery oil path 832. 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 first switching type double clutch is subjected to clutch operation, hydraulic oil is input into a cavity of the first switching type double clutch through the shell oil path, the input shaft oil path and the first clutch oil path, and then the hydraulic oil is conveyed.
Specifically, two oil passages are formed among the shell, the input shaft and the first switching type double clutch. The first 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 first 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 with the two oil ways of the first double-hole conveying oil way, the first 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 two sides of the cavity, and the purpose of conveying the hydraulic oil into the first switching type double clutch from the shell is achieved. In a similar way, the oil path setting principle of hydraulic oil conveying of the second switching type double clutch on the output shaft is the same, namely the hydraulic oil is conveyed to the cavity of the second switching type double clutch through the second double-hole conveying oil path of the shell oil path, the output shaft oil path and the second clutch oil path.
Two annular oil inlet grooves are formed in the connecting position of a first double-hole conveying oil way of a shell oil way and an input shaft oil way, 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 first double-hole conveying oil way is provided with one oil inlet groove for conducting connection. And the input shaft is connected with the inner hole of the first switching type double clutch in an interference fit manner, and meanwhile, an annular oil outlet groove is adopted, so that the 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-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 input gear of the input shaft, and the second clutch block is connected to the common gear, so that the first switching dual clutch can perform mutually exclusive clutch control on the first gear pair of the input shaft and the second gear pair of the common gear. In this embodiment, for example, the first oil guiding passage pushes the double-headed piston body to move toward the common 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 first dual-hole conveying oil passage, the second conveying oil passage of the input shaft oil passage and the route of the second oil guide passage, so that the double-end piston body of the first 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. At this time, the first switching 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 first double-hole conveying oil path, the first conveying oil path of the input shaft oil path and the first oil guide path, so that the double-head piston body of the first 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 combined friction, and power is transmitted to the common gear from the input shaft through the second clutch block, so that the second gear pair is in a combined state, namely the common gear is meshed with the input and output gears, and the power is transmitted to the intermediate shaft from the input shaft. At this time, the first switching type double clutch and the first gear pair are in a separated state.
Similarly, the second switching type double clutch and the first switching type double clutch are used in the same mode. The second switching type double clutch conveys the hydraulic oil to the second switching type double clutch through the second double-hole conveying oil path, the output shaft oil path and the second oil guide path, namely, the two oil paths of the second double-hole conveying oil path, the third conveying oil path and the fourth conveying oil path of the output shaft oil path and the two oil paths of the second oil guide path are respectively connected and communicated, so that two mutually independent oil conveying paths are formed, and the purpose of mutually exclusive clutch control of the second gear pair and the third gear pair is achieved.
Specifically, in this embodiment, the oil inlet of the first oil delivery path is communicated with one oil passage of the first 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 first dual-hole oil path, and the oil outlet of the second oil delivery path is communicated with the second oil guide passage. Similarly, the oil inlet of the third oil conveying path is communicated with one oil duct of the second double-hole oil path, the oil outlet of the third oil conveying path is communicated with the first oil guide duct of the second clutch oil path, the oil inlet of the fourth oil conveying path is communicated with the other oil duct of the second double-hole oil path, and the oil outlet of the fourth oil conveying path is communicated with the second oil guide duct of the second clutch oil path. Therefore, each switching clutch is provided with two oil conveying pipelines which are independent of each other and 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 input shaft oil path, and a second sealing ring 833 is disposed on the input shaft on both sides of each oil inlet of the output shaft oil path. Namely, one 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 the 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 first clutch oil path, and the condition of oil leakage between oil conveying pipelines is also avoided. In the same way, the second sealing ring is used for sealing between the output shaft and the shell, and the output shaft and the inner hole of the clutch are in interference fit, so that the sealing performance among the oil circuit of the shell, the oil circuit of the output shaft and the oil circuit of the second clutch is ensured.
The first sealing ring and the second sealing ring in the embodiment can be opening sealing rings, have high wear-resistant characteristics, can ensure the service life of the input shaft or the output shaft, and reduce the maintenance or repair 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 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.
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 patent.

Claims (10)

1. A transmission with an oil path structure, characterized in that: the double-clutch transmission comprises an input shaft, an output shaft, an intermediate shaft, a first switching type double clutch, a second switching type double clutch, a shell and an oil path structure;
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 in the shell, the input shaft is in transmission connection with the input end of an 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 first switching type double clutch is arranged on the input shaft, the second switching type double clutch is arranged on the output shaft, the first switching type double clutch is positioned between two adjacent gear pairs on the input shaft and the output shaft, the second switching type double clutch is positioned between two adjacent gear pairs on the input shaft and the output shaft, and the first switching type double clutch and the second switching type double clutch are used for controlling the gear pairs on two sides of the switching type double clutch to carry out mutual exclusion clutch operation;
the oil circuit structure comprises a shell oil circuit, an input shaft oil circuit, an output shaft oil circuit, a first clutch oil circuit and a second 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 a branch of the shell oil circuit is communicated with the input shaft oil circuit; the output shaft oil path is arranged in the output shaft, and the other branch of the shell oil path is communicated with the output shaft oil path; the first clutch oil path is arranged in the first switching clutch, and the input shaft oil path is communicated with the first clutch oil path; the second clutch oil path is arranged in the second switching clutch, and the output shaft oil path is communicated with the second clutch oil path.
2. The transmission having an oil passage structure according to claim 1, characterized in that the housing oil passage includes a first dual-hole delivery oil passage and a second dual-hole delivery oil passage, an oil inlet of the first dual-hole delivery oil passage and an oil inlet of the second dual-hole delivery oil passage are provided on an outer side surface of the housing, an oil outlet of the first dual-hole delivery oil passage is provided on an inner surface of a shaft hole of the housing input shaft, and an oil outlet of the second dual-hole delivery oil passage is provided on an inner surface of a shaft hole of the housing output shaft.
3. The transmission having the oil passage structure according to claim 2, characterized in that the first 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;
the second clutch oil path is provided in the same configuration as the first clutch oil path.
4. The transmission having an oil passage structure according to claim 3, characterized in that the first switching double clutch includes a first clutch block, a second clutch block, 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 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 of the first friction plate group or the second friction plate group to be separated;
the second switching clutch is arranged in the same structure as the first switching clutch.
5. The transmission with the oil path structure as claimed in claim 3, wherein the input shaft oil path includes a first oil path and a second oil path, an oil inlet of the first oil path is connected to one oil path of the first dual-hole oil path, an oil outlet of the first oil path is connected to the first oil guide path, an oil inlet of the second oil path is connected to the other oil path of the first dual-hole oil path, and an oil outlet of the second oil path is connected to the second oil guide path.
6. The transmission with the oil path structure as claimed in claim 3, wherein the output shaft oil path includes a third oil feeding path and a fourth oil feeding path, an oil inlet of the third oil feeding path is connected to one oil path of the second double-hole oil path, an oil outlet of the third oil feeding path is connected to one oil path of the second clutch oil path, an oil inlet of the fourth oil feeding path is connected to the other oil path of the second double-hole oil path, and an oil outlet of the fourth oil feeding path is connected to the other oil path of the second clutch oil path.
7. The transmission having an oil passage structure according to claim 1, wherein a first seal ring is provided on the input shaft on both sides of each oil inlet of the input shaft oil passage, and a second seal ring is provided on the input shaft on both sides of each oil inlet of the output shaft oil passage.
8. The transmission having an oil passage structure according to claim 1, wherein the intermediate shaft is provided in plurality, and a plurality of the intermediate shafts are provided in a circumferential array on a central axis of the input shaft in the housing.
9. The transmission having an oil passage structure according to claim 1, further comprising a common gear, the input shaft being provided with a first input gear, the output shaft being provided with a first output gear, the common gear being provided on the input shaft and/or the output shaft between the first input gear and the first output gear.
10. The transmission having an oil passage structure according to claim 9, wherein the counter shaft is provided with a second input gear, an input output gear, and a second output gear; the first input gear and the second input gear are meshed with each other, the first output gear and the second output gear are meshed with each other, and the common gear and the input and output gears are meshed with each other;
the first switching double clutch is disposed between the first input gear and the common gear, and the second switching double clutch is disposed between the common gear and the first output gear.
CN201910622707.9A 2019-07-11 2019-07-11 Transmission with oil circuit structure Pending CN111322359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910622707.9A CN111322359A (en) 2019-07-11 2019-07-11 Transmission with oil circuit structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910622707.9A CN111322359A (en) 2019-07-11 2019-07-11 Transmission with oil circuit structure

Publications (1)

Publication Number Publication Date
CN111322359A true CN111322359A (en) 2020-06-23

Family

ID=71168970

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910622707.9A Pending CN111322359A (en) 2019-07-11 2019-07-11 Transmission with oil circuit structure

Country Status (1)

Country Link
CN (1) CN111322359A (en)

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