WO2024131697A1 - Gearbox gear shift buffering mechanism - Google Patents
Gearbox gear shift buffering mechanism Download PDFInfo
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- WO2024131697A1 WO2024131697A1 PCT/CN2023/139352 CN2023139352W WO2024131697A1 WO 2024131697 A1 WO2024131697 A1 WO 2024131697A1 CN 2023139352 W CN2023139352 W CN 2023139352W WO 2024131697 A1 WO2024131697 A1 WO 2024131697A1
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- WIPO (PCT)
- Prior art keywords
- clutch
- assembly
- clutch shaft
- solenoid valve
- bearing
- Prior art date
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- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 230000003139 buffering effect Effects 0.000 title abstract description 38
- 230000000712 assembly Effects 0.000 claims abstract description 16
- 238000000429 assembly Methods 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims description 67
- 238000007789 sealing Methods 0.000 claims description 11
- 210000004907 gland Anatomy 0.000 claims description 8
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 4
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 239000012208 gear oil Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013024 troubleshooting Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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
- F16H61/04—Smoothing ratio shift
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
-
- 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
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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
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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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
- F16H61/04—Smoothing ratio shift
- F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
- F16H61/065—Smoothing ratio shift by controlling rate of change of fluid pressure using fluid control means
- F16H61/068—Smoothing ratio shift by controlling rate of change of fluid pressure using fluid control means using an orifice control valve
Definitions
- the currently popular gearbox shift buffer mechanism is mainly composed of a hydraulic system with a multi-stage throttling buffering function and a clutch mechanical structure without a buffering function.
- the hydraulic system that plays a buffering role includes multiple solenoid valves for controlling the oil circuit and each gear oil circuit with a multi-stage throttling function, which is generally implemented by a multi-stage throttling hole structure on the valve body or the box body.
- the clutch mechanical structure that plays the shift execution function mainly includes a clutch shaft, a piston assembly, a hub body, a fixed gear, a hub body gear, a friction plate assembly, etc., which is used to transmit power and achieve shifting by controlling the meshing of gears in different gears.
- the purpose of the present invention is to provide a gearbox shift buffer mechanism; the gearbox shift buffer mechanism of the present invention
- the shift mechanism adopts a combined buffering mode of hydraulic system buffering and mechanical buffering, in which the hydraulic system buffering function is realized by an external valve assembly structure with a total throttle hole, and the mechanical buffering function is realized by a structure with a disc spring clutch.
- the shift buffering mechanism improves the buffering effect and shifting comfort; the main throttle hole is used instead of the multi-stage throttle hole, which reduces the complexity of the oil circuit and the difficulty of processing the solenoid valve assembly body; and improves the fault diagnosis speed.
- the external valve assembly includes a valve body and three solenoid valve assemblies arranged on the valve body;
- the three solenoid valve assemblies include two two-position four-way solenoid valve assemblies and one two-position five-way solenoid valve assembly, and the two-position five-way solenoid valve assembly is arranged between the two two-position four-way solenoid valve assemblies;
- the two two-position four-way solenoid valve assemblies and the one two-position five-way solenoid valve assembly are respectively connected to the first clutch, the second clutch and the third clutch in the clutch assembly through the opened oil circuits.
- the hub body is welded and fixed to the clutch shaft, and is axially positioned by a stopper to form an inner cavity that wraps around other components of the clutch;
- the fixed gear is press-fitted onto the clutch shaft by interference fit, with the left side of the fixed gear positioned by the hub body and the right side positioned by a retaining ring installed in the clutch shaft groove;
- the return spring, spring seat and an inner retaining ring are sequentially passed through the clutch shaft and assembled on the inner side of the hub body;
- the friction plate assembly passes through the clutch shaft in a manner of alternating arrangement of a plurality of active friction plates and driven friction plates, is assembled on the inner side of the hub body by means of internal and external spline meshing, and is closely attached to the left end surface of the disc spring assembly;
- the other inner retaining ring is embedded in another groove of the clutch shaft and is located on the left side of the groove of the spring seat limit. side;
- the second bearing passes through the clutch shaft, and its right side is tightly attached to the left side of the inner retaining ring;
- the third bearing and the hub gear sequentially pass through the clutch shaft and are closely attached to the left side of the second bearing;
- the hub gear is connected to the friction plate assembly in an internal and external spline meshing manner
- the first bearing and the fourth bearing are mounted on the shoulders at both ends of the clutch shaft, and the sealing ring is embedded in the grooves at both ends of the clutch shaft.
- valve body oil passage is connected to each clutch oil circuit
- it also includes a combination valve, which is connected to the main throttle hole of the external valve assembly through an oil circuit.
- a combined buffer of a total throttle hole of an external valve body and a disc spring group is adopted.
- the total throttle hole reduces the oil pressure in the oil circuit, and the disc spring group pushes the friction plate assembly to be pressed smoothly, taking into account the buffering effect of the clutch hydraulic system and the mechanical structure, and improving the buffering effect and the smoothness of the buffering process; 2.
- FIG1 is a schematic structural diagram of a shift buffer mechanism in the present invention.
- FIG2 is a schematic structural diagram of an external valve assembly in the present invention.
- FIG3 is a side view of the external valve assembly of the present invention.
- FIG4 is a schematic diagram of the assembly structure of the clutch in the present invention.
- a gearbox shift buffer mechanism of the present invention comprises a gear shift buffer mechanism 1, wherein the gear shift buffer mechanism 1 has an external valve assembly 2 of a total throttle hole and a clutch assembly 7 with a disc spring assembly;
- the external valve assembly 2 includes a valve body 5 and a solenoid valve assembly
- the clutch assembly 7 includes a clutch shaft 11, a piston assembly 24, a hub body 26, a fixed gear 27, a hub body gear 16, a return spring 21, a friction plate assembly 22 and a disc spring assembly 23;
- the piston assembly 24, the hub body 26, the hub body gear 16, the return spring 21, the friction plate assembly 22, and the disc spring assembly 23 are all sleeved on the clutch shaft 11, and the hub body 26 is fixed to the clutch shaft 11;
- valve body 5 is processed with a total throttle hole 31, a gear oil circuit and a solenoid valve mounting hole.
- a pressure oil passage 33 is provided in the clutch shaft 11 for introducing pressure oil to push the piston assembly 24 to move axially, so that the piston assembly 24, the disc spring assembly 23 and the friction plate assembly 22 abut against each other, and the hub gear 16 engages with the hub body 26 through the friction plate assembly 22 to complete the power transmission; when separating, the pressure oil in the pressure oil passage 33 is cut off, and under the action of the return spring 21 and the disc spring assembly 23, the piston assembly 24 quickly returns to its position, the active friction plate 221 and the driven friction plate 222 of the friction plate assembly 22 are disengaged, the hub gear 16 does not engage to transmit power, and the clutch is separated.
- the clutch is provided with a first bearing 13, a second bearing 14, a third bearing 15, and a fourth bearing 25.
- the first bearing 13 and the fourth bearing 25 are specifically tapered roller bearings, which are arranged on both sides of the clutch shaft 11.
- the second bearing 14 is specifically a thrust bearing, which is limited by the first bearing 13 and the inner retaining ring 18.
- the third bearing 15 is specifically a needle bearing, which is located between the two second bearings 14. The reliability of power transmission is ensured by the mutual cooperation of the bearings.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
A gearbox gear shift buffering mechanism, which comprises: an external valve assembly (2) having a main throttle hole and a clutch assembly (7) having a disc spring set, the external valve assembly (2) being connected to the clutch assembly (7) via an oil passage, and the clutch assembly (7) comprising a first clutch (8), a second clutch (9), and a third clutch (10); the external valve assembly (2) comprises two two-position four-way solenoid valve assemblies (3), one two-position five-way solenoid valve assembly (4), and a valve body (5); and the two two-position four-way solenoid valve assemblies (3) and the one two-position five-way solenoid valve assembly (4) are respectively connected via provided oil passages to a first clutch (8), a second clutch (9), and a third clutch (10) which are disposed in the clutch assembly. The invention utilizes the combined buffering of the external valve main throttle hole and the disc spring set, the main throttle hole reducing oil passage pressure, and the disc spring set firmly pushing a friction plate assembly, thereby taking into consideration the buffering effect of both a clutch hydraulic system and a mechanical structure, thus improving the buffering effect and the stability during the buffering process.
Description
本发明属于工程机械技术领域,涉及了一种变速箱换档缓冲机构,具体的是,涉及了一种具有总节流孔的外置阀总成、自带碟簧组离合器的变速箱换档缓冲机构。The present invention belongs to the technical field of engineering machinery, and relates to a gearbox shift buffer mechanism, and more specifically, to a gearbox shift buffer mechanism with an external valve assembly having a total throttle hole and a self-contained disc spring clutch.
变速箱换档缓冲机构主要包括液压系统缓冲结构和离合器机械结构两个部分,通过液压系统和离合器机械结构的参数匹配实现良好的换挡缓冲效果,达到让离合器接合平稳,汽车平稳起步、平顺换挡的作用,从而适应不断变化的行驶条件。The gearbox shift buffer mechanism mainly includes two parts: the hydraulic system buffer structure and the clutch mechanical structure. A good shift buffer effect is achieved through parameter matching between the hydraulic system and the clutch mechanical structure, so that the clutch engages smoothly, the car starts smoothly, and the gear shifts smoothly, thereby adapting to changing driving conditions.
现行普及的变速箱换档缓冲机构主要由具有多级节流缓冲作用的液压系统和无缓冲作用的离合器机械结构组成。起到缓冲作用的液压系统包括用于控制油路的多个电磁阀和具有多级节流功能的各档油路,一般采用阀体或箱体上的多级节流孔结构实现。起到换挡执行功能的离合器机械结构主要包括离合器轴、活塞组件、毂体、固定齿轮、毂体齿轮、摩擦片组件等,用于通过控制不同档位齿轮的啮合传递动力、实现换挡。其换挡缓冲作用原理是:在进行离合器接合时,各档压力油路开启,压力油进入加工有多级节流孔的阀体油路,通过各级节流孔依次排除,最终产生适当压力的压力油并进入离合器毂体活塞组件腔,推动活塞组件向摩擦片组件方向移动,压紧摩擦片组件,使毂体齿轮与毂体组件接合,传递输出动力;在进行分离时,压力油切断,活塞迅速回位,摩擦片组件脱开,毂体组件与毂体齿轮分离,动力不能传递。通过控制离合器的接合脱开,从而实现离合器换挡。在此过程中,因多级节流孔能够降低油压,使得充油升压时间延长,从而降低摩擦片组件压紧、离合器接合时的冲击力,实现换挡缓冲作用。The currently popular gearbox shift buffer mechanism is mainly composed of a hydraulic system with a multi-stage throttling buffering function and a clutch mechanical structure without a buffering function. The hydraulic system that plays a buffering role includes multiple solenoid valves for controlling the oil circuit and each gear oil circuit with a multi-stage throttling function, which is generally implemented by a multi-stage throttling hole structure on the valve body or the box body. The clutch mechanical structure that plays the shift execution function mainly includes a clutch shaft, a piston assembly, a hub body, a fixed gear, a hub body gear, a friction plate assembly, etc., which is used to transmit power and achieve shifting by controlling the meshing of gears in different gears. The principle of its shift buffering effect is: when the clutch is engaged, the pressure oil circuits of each gear are opened, and the pressure oil enters the valve body oil circuit with multi-stage throttle holes, and is discharged in sequence through the throttle holes of each stage, and finally generates pressure oil of appropriate pressure and enters the clutch hub piston assembly cavity, pushing the piston assembly to move toward the friction plate assembly, pressing the friction plate assembly, so that the hub gear and the hub assembly engage, and transmit the output power; when separating, the pressure oil is cut off, the piston quickly returns to its position, the friction plate assembly disengages, the hub assembly and the hub gear are separated, and the power cannot be transmitted. The clutch shifting is achieved by controlling the engagement and disengagement of the clutch. In this process, because the multi-stage throttle holes can reduce the oil pressure, the oil filling and pressure increase time is extended, thereby reducing the impact force when the friction plate assembly is pressed and the clutch is engaged, and the shift buffering effect is achieved.
现行变速箱换挡缓冲机构在实际应用中效果不好,缓冲质量不稳定,缓冲效果不佳,主要存在着如下缺点:1、采用多级节流孔进行缓冲,各级节流孔的结构尺寸均需要与油压、离合器机械结构计算匹配,提高了设计计算的复杂性;外置电磁阀阀体油路相对较为较多且较为复杂,增加了电磁阀总成阀体的加工难度与制作成本;2、多级节流孔孔径尺寸小,易堵塞,影响缓冲效果,且节流孔数量多,结构不一,不利于故障的诊断和排查,加大了问题排查和维修的困难性;3、离合器毂体总成内部无机械缓冲装置,缓冲效果仅仅依赖于液压系统的外部节流孔,缓冲模式单一;离合器机械系统仍然通过冲击进行接合,若某一节流孔堵塞,缓冲作用就会极大削弱,缓冲效果难以得到有效保障。The current gearbox shift buffer mechanism has poor effect in actual application, unstable buffer quality, poor buffer effect, and mainly has the following disadvantages: 1. Multi-stage throttle holes are used for buffering, and the structural dimensions of each stage of throttle holes need to match the oil pressure and clutch mechanical structure calculations, which increases the complexity of design calculations; the external solenoid valve body oil circuit is relatively large and complex, which increases the processing difficulty and production cost of the solenoid valve assembly body; 2. The multi-stage throttle holes have small apertures and are easy to clog, which affects the buffering effect, and the number of throttle holes is large and the structures are different, which is not conducive to fault diagnosis and troubleshooting, and increases the difficulty of problem troubleshooting and maintenance; 3. There is no mechanical buffer device inside the clutch hub assembly, and the buffering effect only depends on the external throttle holes of the hydraulic system, and the buffering mode is single; the clutch mechanical system is still engaged through impact. If a throttle hole is blocked, the buffering effect will be greatly weakened, and the buffering effect is difficult to be effectively guaranteed.
发明内容Summary of the invention
发明目的:本发明目的是提供了一种变速箱换档缓冲机构;本发明的变速箱换档缓
冲机构采用液压系统缓冲和机械缓冲的组合缓冲模式,其中液压系统缓冲功能采用具有总节流孔的外置阀总成结构实现,机械缓冲功能采用自带碟簧组离合器的结构实现。该换档缓冲机构提升了缓冲效果和换挡舒适度;采用主节流孔替代多级节流孔,降低了油路复杂性,减小了电磁阀总成阀体的加工难度;提升了故障诊断速度。Purpose of the invention: The purpose of the present invention is to provide a gearbox shift buffer mechanism; the gearbox shift buffer mechanism of the present invention The shift mechanism adopts a combined buffering mode of hydraulic system buffering and mechanical buffering, in which the hydraulic system buffering function is realized by an external valve assembly structure with a total throttle hole, and the mechanical buffering function is realized by a structure with a disc spring clutch. The shift buffering mechanism improves the buffering effect and shifting comfort; the main throttle hole is used instead of the multi-stage throttle hole, which reduces the complexity of the oil circuit and the difficulty of processing the solenoid valve assembly body; and improves the fault diagnosis speed.
技术方案:本发明所述的一种变速箱换档缓冲机构;Technical solution: A gearbox shift buffer mechanism according to the present invention;
包括换挡缓冲机构,所述换挡缓冲机构包括具有总节流孔的外置阀总成和自带碟簧组的离合器总成,所述外置阀总成通过油路连接在离合器总成中安设的各离合器上;The gear shift buffer mechanism includes an external valve assembly with a total throttle hole and a clutch assembly with a disc spring assembly, and the external valve assembly is connected to each clutch installed in the clutch assembly through an oil circuit;
所述外置阀总成包括阀体及安置在阀体上的三个电磁阀总成;The external valve assembly includes a valve body and three solenoid valve assemblies arranged on the valve body;
三个所述的电磁阀总成包括两个两位四通电磁阀总成及一个两位五通电磁阀总成、且所述两位五通电磁阀总成安设于两个两位四通电磁阀总成之间;The three solenoid valve assemblies include two two-position four-way solenoid valve assemblies and one two-position five-way solenoid valve assembly, and the two-position five-way solenoid valve assembly is arranged between the two two-position four-way solenoid valve assemblies;
所述离合器总成包括第一离合器、第二离合器及第三离合器;The clutch assembly includes a first clutch, a second clutch and a third clutch;
两个所述两位四通电磁阀总成及一个所述两位五通电磁阀总成通过开设的油路分别连接在离合器总成中的第一离合器、第二离合器及第三离合器上。The two two-position four-way solenoid valve assemblies and the one two-position five-way solenoid valve assembly are respectively connected to the first clutch, the second clutch and the third clutch in the clutch assembly through the opened oil circuits.
进一步的,任意一个所述的离合器均包括离合器轴、密封环、第一轴承、第二轴承、第三轴承、毂体齿轮、外挡圈、内挡圈、压盖、弹簧座、复位弹簧、摩擦片组件、碟簧组件、活塞组件、第四轴承、毂体及固定齿轮;Further, any of the clutches described includes a clutch shaft, a sealing ring, a first bearing, a second bearing, a third bearing, a hub gear, an outer retaining ring, an inner retaining ring, a gland, a spring seat, a return spring, a friction plate assembly, a disc spring assembly, a piston assembly, a fourth bearing, a hub and a fixed gear;
所述毂体与离合器轴之间焊接固定、且通过止口轴向定位形成包裹离合器其他部件的内腔;The hub body is welded and fixed to the clutch shaft, and is axially positioned by a stopper to form an inner cavity that wraps around other components of the clutch;
所述固定齿轮通过过盈配合压装在离合器轴上,其左侧由毂体定位,右侧由安装在离合器轴沟槽的挡圈定位;The fixed gear is press-fitted onto the clutch shaft by interference fit, with the left side of the fixed gear positioned by the hub body and the right side positioned by a retaining ring installed in the clutch shaft groove;
所述活塞组件穿过离合器轴装配于毂体的内腔底部;The piston assembly passes through the clutch shaft and is assembled on the bottom of the inner cavity of the hub body;
所述碟簧组件穿过离合器轴装配于毂体的内侧并紧贴活塞组件的左端面;The disc spring assembly passes through the clutch shaft and is assembled on the inner side of the hub body and is closely attached to the left end surface of the piston assembly;
所述复位弹簧、弹簧座与1个内挡圈依次穿过离合器轴装配于毂体的内侧;The return spring, spring seat and an inner retaining ring are sequentially passed through the clutch shaft and assembled on the inner side of the hub body;
其中,所述复位弹簧贴紧在活塞组件的左端面,所述弹簧座贴紧复位弹簧,所述内挡圈嵌入在离合器轴的沟槽中对弹簧座限位;The return spring is pressed against the left end face of the piston assembly, the spring seat is pressed against the return spring, and the inner retaining ring is embedded in the groove of the clutch shaft to limit the spring seat;
所述摩擦片组件包括若干个主动摩擦片及从动摩擦片,The friction plate assembly includes a plurality of active friction plates and driven friction plates.
所述摩擦片组件以若干主动摩擦片及从动摩擦片交替排列的方式穿过离合器轴,通过内外花键啮合的方式装配于毂体的内侧,并紧贴碟簧组件的左端面;The friction plate assembly passes through the clutch shaft in a manner of alternating arrangement of a plurality of active friction plates and driven friction plates, is assembled on the inner side of the hub body by means of internal and external spline meshing, and is closely attached to the left end surface of the disc spring assembly;
所述压盖穿过离合器轴装配于毂体内侧并位于摩擦片组件的左侧;The pressure cover passes through the clutch shaft and is assembled inside the hub body and is located on the left side of the friction plate assembly;
所述外挡圈位于压盖的左侧并嵌入至毂体中从而限制所述活塞组件、碟簧组件摩擦片组件和压盖的轴向运动;The outer retaining ring is located on the left side of the gland and is embedded in the hub body to limit the axial movement of the piston assembly, the disc spring assembly, the friction plate assembly and the gland;
所述另一个内挡圈嵌入离合器轴的另一个沟槽中,且位于所述弹簧座限位的沟槽左
侧;The other inner retaining ring is embedded in another groove of the clutch shaft and is located on the left side of the groove of the spring seat limit. side;
所述第二轴承穿过离合器轴,其右侧与内挡圈左侧贴紧;The second bearing passes through the clutch shaft, and its right side is tightly attached to the left side of the inner retaining ring;
所述第三轴承和毂体齿轮依次穿过离合器轴后共同紧贴在第二轴承的左侧;The third bearing and the hub gear sequentially pass through the clutch shaft and are closely attached to the left side of the second bearing;
所述第三轴承位于毂体齿轮与离合器轴之间;The third bearing is located between the hub gear and the clutch shaft;
所述毂体齿轮以内外花键啮合的方式与摩擦片组件相连接;The hub gear is connected to the friction plate assembly in an internal and external spline meshing manner;
所述另一个第三轴承穿过离合器轴右端面贴紧毂体齿轮左端面;The other third bearing passes through the right end surface of the clutch shaft and is close to the left end surface of the hub gear;
所述第一轴承及第四轴承装配于离合器轴两端轴肩,所述密封环嵌入离合器轴两端沟槽。The first bearing and the fourth bearing are mounted on the shoulders at both ends of the clutch shaft, and the sealing ring is embedded in the grooves at both ends of the clutch shaft.
进一步的,所述碟簧组件包括碟簧和碟簧座,其结构与液压系统油压和离合器结构参数相匹配。Furthermore, the disc spring assembly includes a disc spring and a disc spring seat, and its structure matches the hydraulic system oil pressure and clutch structural parameters.
进一步的,所述活塞组件包括活塞和密封件,与所述毂体和离合器轴密封滑动配合,形成压力油腔。Furthermore, the piston assembly includes a piston and a seal, which is in sliding cooperation with the hub body and the clutch shaft seal to form a pressure oil chamber.
进一步的,在所述离合器轴内开设有压力油道和润滑油道。Furthermore, a pressure oil channel and a lubricating oil channel are provided in the clutch shaft.
进一步的,在所述阀体上开设有总节流孔、阀体油道及电磁阀安装孔;Furthermore, a total throttle hole, a valve body oil passage and a solenoid valve mounting hole are provided on the valve body;
其中,所述阀体油道连接各离合器油路;Wherein, the valve body oil passage is connected to each clutch oil circuit;
所述电磁阀安装孔用以安装电磁阀。The solenoid valve installation hole is used for installing the solenoid valve.
进一步的,还包括组合阀,所述还包括组合阀通过油路连接在外置阀总成的总节流孔上。Furthermore, it also includes a combination valve, which is connected to the main throttle hole of the external valve assembly through an oil circuit.
有益效果:本发明的特点:1、采用外置阀体总节流孔、碟簧组的组合缓冲,总节流孔降低油路油压,碟簧组推动摩擦片组件平稳压紧,兼顾了离合器液压系统和机械结构的缓冲作用,提高了缓冲效果和缓冲过程平稳性;2、缓冲过程不依靠多级节流缓冲的结构设计,降低了外置电磁阀阀体的加工复杂性和难度;采用总节流孔的油路结构而不采用多级节流孔结构,减小了孔径过小发生堵塞的故障可能,降低了故障发生率;避免了节流孔数量过多导致的故障排查困难,提高了故障排查的准确度,缩短了维修时间;3、本发明采用碟簧组件作为离合器机械缓冲结构,既避免了单碟簧结构的缓冲效果不佳问题,又避免了碟簧数量过多导致离合器空间结构过大的问题。Beneficial effects: Features of the present invention: 1. A combined buffer of a total throttle hole of an external valve body and a disc spring group is adopted. The total throttle hole reduces the oil pressure in the oil circuit, and the disc spring group pushes the friction plate assembly to be pressed smoothly, taking into account the buffering effect of the clutch hydraulic system and the mechanical structure, and improving the buffering effect and the smoothness of the buffering process; 2. The buffering process does not rely on the structural design of the multi-stage throttling buffer, which reduces the processing complexity and difficulty of the external solenoid valve body; the oil circuit structure of the total throttle hole is adopted instead of the multi-stage throttle hole structure, which reduces the possibility of blockage caused by a small aperture and reduces the occurrence rate of failures; the difficulty in troubleshooting caused by an excessive number of throttle holes is avoided, the accuracy of troubleshooting is improved, and the maintenance time is shortened; 3. The present invention adopts a disc spring assembly as a clutch mechanical buffer structure, which not only avoids the problem of poor buffering effect of a single disc spring structure, but also avoids the problem of an excessively large clutch space structure caused by an excessive number of disc springs.
图1是本发明中换挡缓冲机构的结构示意图;FIG1 is a schematic structural diagram of a shift buffer mechanism in the present invention;
图2是本发明中外置阀总成的结构示意图;FIG2 is a schematic structural diagram of an external valve assembly in the present invention;
图3是本发明中外置阀总成的侧视图;FIG3 is a side view of the external valve assembly of the present invention;
图4是本发明中离合器的总成结构示意图;FIG4 is a schematic diagram of the assembly structure of the clutch in the present invention;
图中,1、换挡缓冲机构;2、外置阀总成;3、两位四通电磁阀总成;4、两位五通
电磁阀总成;5、阀体;6、组合阀;7、离合器总成;8、第一离合器;9、第二离合器;10、第三离合器;11、离合器轴;12、密封环;13、第一轴承;14、第二轴承;15、第三轴承;16、毂体齿轮;17、外挡圈;18、内挡圈;19、压盖;20、弹簧座;21、复位弹簧;22、摩擦片组件;23、碟簧组件;24、活塞组件;25、第四轴承;26、毂体;27、固定齿轮;30、阀体油道;31、总节流孔;32、润滑油道;33、压力油道;221、主动摩擦片;222、从动摩擦片。In the figure, 1. Shift buffer mechanism; 2. External valve assembly; 3. Two-position four-way solenoid valve assembly; 4. Two-position five-way Solenoid valve assembly; 5. Valve body; 6. Combination valve; 7. Clutch assembly; 8. First clutch; 9. Second clutch; 10. Third clutch; 11. Clutch shaft; 12. Sealing ring; 13. First bearing; 14. Second bearing; 15. Third bearing; 16. Hub gear; 17. Outer retaining ring; 18. Inner retaining ring; 19. Gland; 20. Spring seat; 21. Return spring; 22. Friction plate assembly; 23. Disc spring assembly; 24. Piston assembly; 25. Fourth bearing; 26. Hub; 27. Fixed gear; 30. Valve oil passage; 31. Main throttle hole; 32. Lubricating oil passage; 33. Pressure oil passage; 221. Active friction plate; 222. Driven friction plate.
以下结合附图和具体实施例,对本发明做出进一步说明。The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.
如图所述,本发明所述的一种变速箱换档缓冲机构,包括换挡缓冲机构1,所述换挡缓冲机构1具有总节流孔的外置阀总成2和自带碟簧组的离合器总成7;As shown in the figure, a gearbox shift buffer mechanism of the present invention comprises a gear shift buffer mechanism 1, wherein the gear shift buffer mechanism 1 has an external valve assembly 2 of a total throttle hole and a clutch assembly 7 with a disc spring assembly;
所述外置阀总成2包括阀体5、电磁阀总成;The external valve assembly 2 includes a valve body 5 and a solenoid valve assembly;
所述离合器总成7包括离合器轴11、活塞组件24、毂体26、固定齿轮27、毂体齿轮16、复位弹簧21、摩擦片组件22及碟簧组件23;The clutch assembly 7 includes a clutch shaft 11, a piston assembly 24, a hub body 26, a fixed gear 27, a hub body gear 16, a return spring 21, a friction plate assembly 22 and a disc spring assembly 23;
所述外置阀总成2的阀体5内设油路与离合器油路连通,通过控制油路的通断从而控制离合器总成7的接合与脱开;The valve body 5 of the external valve assembly 2 is provided with an oil circuit which is connected to the clutch oil circuit, and the engagement and disengagement of the clutch assembly 7 are controlled by controlling the on and off of the oil circuit;
所述活塞组件24、毂体26、毂体齿轮16、复位弹簧21、摩擦片组件22、碟簧组件23均套设于离合器轴11,所述毂体26与离合器轴11固定;The piston assembly 24, the hub body 26, the hub body gear 16, the return spring 21, the friction plate assembly 22, and the disc spring assembly 23 are all sleeved on the clutch shaft 11, and the hub body 26 is fixed to the clutch shaft 11;
所述活塞组件24、摩擦片组件22、碟簧组件23能够与离合器轴11轴向移动;The piston assembly 24, the friction plate assembly 22, and the disc spring assembly 23 can move axially with the clutch shaft 11;
所述毂体齿轮16能够相对离合器轴11转动。The hub gear 16 is rotatable relative to the clutch shaft 11 .
进一步的,所述阀体5加工有总节流孔31、档位油路以及电磁阀安装孔,Furthermore, the valve body 5 is processed with a total throttle hole 31, a gear oil circuit and a solenoid valve mounting hole.
所述总节流孔31降低电磁阀油路油压压力,实现液压系统缓冲功能;The total throttle hole 31 reduces the oil pressure of the solenoid valve oil circuit to achieve the buffer function of the hydraulic system;
所述档位油路连接离合器油路,实现离合器的液力控制;The gear oil circuit is connected to the clutch oil circuit to achieve hydraulic control of the clutch;
所述电磁阀安装孔用以安装电磁阀。The solenoid valve installation hole is used for installing the solenoid valve.
进一步的,所述电磁阀总成包括一个两位四通电磁阀总成3和两个两位五通电磁阀总成4;Furthermore, the solenoid valve assembly includes a two-position four-way solenoid valve assembly 3 and two two-position five-way solenoid valve assemblies 4;
所述两位五通电磁阀总成4设于两个所述两位四通电磁阀总成3之间,用于控制油路的开闭实现离合器的换挡功能。The two-position five-way solenoid valve assembly 4 is arranged between the two two-position four-way solenoid valve assemblies 3 and is used to control the opening and closing of the oil circuit to realize the shifting function of the clutch.
进一步的,所述离合器轴11内加工有压力油道33和润滑油道32,所述压力油道33用于传递压力油,润滑油道32用于润滑散热。Furthermore, a pressure oil passage 33 and a lubricating oil passage 32 are machined in the clutch shaft 11 . The pressure oil passage 33 is used to transmit pressure oil, and the lubricating oil passage 32 is used for lubrication and heat dissipation.
进一步的,所述活塞组件24包括活塞和密封件,与所述毂体26和所述离合器轴11密封滑动配合,形成压力油腔;所述压力油腔与所述压力油道33相连通。Furthermore, the piston assembly 24 includes a piston and a seal, which is sealed and slidably matched with the hub body 26 and the clutch shaft 11 to form a pressure oil chamber; the pressure oil chamber is connected to the pressure oil channel 33.
进一步的,所述毂体26用于包裹轴上的离合器组件;所述固定齿轮27用于与其余
离合器上的毂体齿轮27啮合分离,实现动力的传递与中断;所述毂体26、离合器轴11与固定齿轮27固定配合。Furthermore, the hub body 26 is used to wrap the clutch assembly on the shaft; the fixed gear 27 is used to communicate with the rest The hub gear 27 on the clutch is engaged and disengaged to achieve power transmission and interruption; the hub 26, the clutch shaft 11 and the fixed gear 27 are fixedly matched.
进一步的,所述复位弹簧21套设于所述离合器轴11上,与所述活塞组件24相抵接,用于实现压力油切断时活塞组件24的复位。Furthermore, the return spring 21 is sleeved on the clutch shaft 11 and abuts against the piston assembly 24 to achieve the return of the piston assembly 24 when the pressure oil is cut off.
进一步的,所述摩擦片组件22包括主动摩擦片221和从动摩擦片222,用于在压力油作用下贴合,实现动力传递。Furthermore, the friction plate assembly 22 includes an active friction plate 221 and a driven friction plate 222, which are used to fit together under the action of pressure oil to achieve power transmission.
进一步的,所述碟簧组件23包括碟簧和碟簧座,位于所述活塞组件24和摩擦片组件22之间,具有机械缓冲作用,其结构与液压系统油压和离合器结构参数相匹配。Furthermore, the disc spring assembly 23 includes a disc spring and a disc spring seat, which is located between the piston assembly 24 and the friction plate assembly 22, and has a mechanical buffering effect. Its structure matches the hydraulic system oil pressure and clutch structural parameters.
本发明提供的变速箱换档缓冲机构,在进行离合器接合时,压力油通33过外置阀总成2油路的总节流孔31泄压,经档位油路进入离合器的压力油道,推动所述活塞组件24移动,压缩所述碟簧组件23,压紧所述摩擦片组件22,使毂体齿轮27与毂体26连接,进行动力的传递与输出。The gearbox shift buffer mechanism provided by the present invention has the following characteristics: when the clutch is engaged, the pressure oil is released through the total throttle hole 31 of the oil circuit of the external valve assembly 2 through 33, and enters the pressure oil channel of the clutch through the gear oil circuit, pushing the piston assembly 24 to move, compressing the disc spring assembly 23, and pressing the friction plate assembly 22, so that the hub gear 27 is connected to the hub body 26 to transmit and output power.
在上述过程中,因位于活塞组件24和摩擦片组件22之间的碟簧组件23被压缩,产生弹力,使接合过程得以平稳进行,减小了所述摩擦片组件22的压紧过程的冲击,碟簧组件23起到了机械结构缓冲的作用;在离合器分离时,所述压力油道33的压力油被切断,复位弹簧21回位,推动活塞组件24朝摩擦片组件22反向移动,摩擦片组件22被放松,毂体齿轮27与毂体26组件分离,切断动力传递,使离合器分离迅速。In the above process, the disc spring assembly 23 located between the piston assembly 24 and the friction plate assembly 22 is compressed to generate elastic force, so that the engagement process can be carried out smoothly, reducing the impact of the clamping process of the friction plate assembly 22, and the disc spring assembly 23 plays a role of mechanical structure buffer; when the clutch is disengaged, the pressure oil in the pressure oil channel 33 is cut off, the reset spring 21 returns to its position, pushing the piston assembly 24 to move in the opposite direction toward the friction plate assembly 22, the friction plate assembly 22 is relaxed, and the hub gear 27 is separated from the hub body 26 assembly, cutting off the power transmission, so that the clutch is disengaged quickly.
本实施例提供了一种换挡缓冲机构,适用于变速箱。参考图1所示,该换挡缓冲机构1包括外置阀总成2和离合器总成7;This embodiment provides a shift buffer mechanism, which is suitable for a gearbox. Referring to FIG1 , the shift buffer mechanism 1 includes an external valve assembly 2 and a clutch assembly 7;
外置阀总成2通过图1油路连接离合器总成7的各个离合器,实现对各个离合器的电液换挡控制;The external valve assembly 2 is connected to each clutch of the clutch assembly 7 through the oil circuit in FIG1 , so as to realize the electro-hydraulic shift control of each clutch;
所述离合器总成7可设置3个离合器,分别为第一离合器8、第二离合器9、第三离合器10,各个离合器结构类似,以第一离合器8为例进行说明。The clutch assembly 7 may be provided with three clutches, namely a first clutch 8, a second clutch 9, and a third clutch 10. The structures of the clutches are similar, and the first clutch 8 is taken as an example for description.
具体的,如图2所示,所述外置阀总成2包括两个两位四通电磁阀总成3、一个两位五通电磁阀总成4及阀体5;螺钉通过下置垫片分别将两位四通电磁阀总成3、两位五通电磁阀总成4固定在阀体5对应的电磁阀孔内;两位五通电磁阀总成4位于两个两位四通电磁阀总成3之间,该位置布局能满足各档位液压油路布置的简洁化需求,降低油路加工难度;Specifically, as shown in FIG. 2 , the external valve assembly 2 includes two two-position four-way solenoid valve assemblies 3, one two-position five-way solenoid valve assembly 4 and a valve body 5; screws fix the two-position four-way solenoid valve assembly 3 and the two-position five-way solenoid valve assembly 4 in the solenoid valve holes corresponding to the valve body 5 through lower gaskets; the two-position five-way solenoid valve assembly 4 is located between the two two-position four-way solenoid valve assemblies 3, and this position layout can meet the requirements of the simplicity of the hydraulic oil circuit layout of each gear position and reduce the difficulty of oil circuit processing;
阀体5上钻有图1所示的液压油路和总节流孔33,液压油路通过电磁阀的开关控制离合器的接合分离,从而实现换挡功能;总节流孔31用以流量调节,起到缓冲减压作用。The valve body 5 is drilled with a hydraulic oil circuit and a total throttle hole 33 as shown in FIG1 . The hydraulic oil circuit controls the engagement and disengagement of the clutch through the switch of the solenoid valve, thereby realizing the shifting function; the total throttle hole 31 is used for flow regulation and plays a role in buffering and reducing pressure.
具体的,如图3所示,第二离合器9包括离合器轴11、密封环12、第一轴承13、
第二轴承14、第三轴承15、毂体齿轮16、外挡圈17、内挡圈18、压盖19、弹簧座20、复位弹簧21、摩擦片组件22、碟簧组件23、活塞组件24、第四轴承25、毂体26、固定齿轮27;Specifically, as shown in FIG. 3 , the second clutch 9 includes a clutch shaft 11 , a sealing ring 12 , a first bearing 13 , The second bearing 14, the third bearing 15, the hub gear 16, the outer retaining ring 17, the inner retaining ring 18, the gland 19, the spring seat 20, the return spring 21, the friction plate assembly 22, the disc spring assembly 23, the piston assembly 24, the fourth bearing 25, the hub 26, and the fixed gear 27;
其中,摩擦片组件22包括若干主动摩擦片221、从动摩擦片222;The friction plate assembly 22 includes a plurality of active friction plates 221 and a plurality of driven friction plates 222;
在离合器轴11上依次穿设有活塞组件24、碟簧组件23、摩擦片组件22、毂体齿轮301,起到传递动力和扭矩的作用;The clutch shaft 11 is provided with a piston assembly 24, a disc spring assembly 23, a friction plate assembly 22, and a hub gear 301 in sequence, which play the role of transmitting power and torque;
在离合器轴11内设有压力油道33,用于通入压力油,推动活塞组件24轴向移动,使活塞组件24、碟簧组件23、摩擦片组件22抵接,毂体齿轮16通过摩擦片组件22与毂体26接合,以完成动力传递;分离时,压力油道33的压力油被切断,在复位弹簧21和碟簧组件23的作用下,活塞组件24迅速回位,摩擦片组件22的主动摩擦片221、从动摩擦片222脱开,毂体齿轮16不啮合传递动力,离合器分离。A pressure oil passage 33 is provided in the clutch shaft 11 for introducing pressure oil to push the piston assembly 24 to move axially, so that the piston assembly 24, the disc spring assembly 23 and the friction plate assembly 22 abut against each other, and the hub gear 16 engages with the hub body 26 through the friction plate assembly 22 to complete the power transmission; when separating, the pressure oil in the pressure oil passage 33 is cut off, and under the action of the return spring 21 and the disc spring assembly 23, the piston assembly 24 quickly returns to its position, the active friction plate 221 and the driven friction plate 222 of the friction plate assembly 22 are disengaged, the hub gear 16 does not engage to transmit power, and the clutch is separated.
与现有技术相比,缓冲方式从原有的分级节流孔液压系统缓冲变为了总节流孔33液压系统降压缓冲、碟簧组件23机械缓冲的组合缓冲模式,使摩擦片组件22压紧平稳、快速,能提高离合器接合时的缓冲效果,降低离合器接合的冲击力,提高换挡的平稳性。离合器分离时,复位弹簧21和碟簧组件23共同作用,使活塞组件24快速回位,离合器分离迅速、彻底,避免档位干涉。Compared with the prior art, the buffering mode is changed from the original graded throttle hydraulic system buffering to a combined buffering mode of the total throttle 33 hydraulic system pressure reduction buffering and the disc spring assembly 23 mechanical buffering, so that the friction plate assembly 22 can be pressed smoothly and quickly, which can improve the buffering effect when the clutch is engaged, reduce the impact force of the clutch engagement, and improve the stability of the gear shift. When the clutch is disengaged, the return spring 21 and the disc spring assembly 23 work together to make the piston assembly 24 return quickly, and the clutch is disengaged quickly and thoroughly to avoid gear interference.
本实施例的变速箱换档缓冲机构工作过程如下:The working process of the gearbox shift buffer mechanism of this embodiment is as follows:
以第二离合器9工作为例,在接合时,压力油通过组合阀6调压,从主油口进入,经过总节流孔31,流量减小,总节流孔31的孔径根据离合器工作参数和工作压力计算匹配。在总节流孔31的缓冲作用下,压力合适的压力油进入第一个两位四通电磁阀总成3左腔室,经阀体油路30进入两位五通电磁阀总成4左腔室、第二个两位四通电磁阀总成3左腔室,经过离合器轴11上的压力油路32进入由活塞组件24和毂体26密封滑动配合构成的压力油腔内,推动活塞组件24向摩擦片组件22方向移动,压缩复位弹簧21和碟簧组件23,碟簧组件23推动摩擦片组件22的主动摩擦片221和从动摩擦片222夹紧,毂体齿轮16与离合器轴11相连接,使离合器平稳接合。当离合器分离时,压力油道33的压力油被切断,复位弹簧21和碟簧组件23回位,推动活塞组件24朝摩擦片组件22反向移动,摩擦片组件22的主动摩擦片221和从动摩擦片222被放松,毂体齿轮16与离合器轴11分离,切断动力传递,离合器迅速分离。Taking the operation of the second clutch 9 as an example, when engaging, the pressure oil is regulated by the combination valve 6, enters from the main oil port, passes through the total throttle hole 31, and the flow rate is reduced. The aperture of the total throttle hole 31 is calculated and matched according to the clutch working parameters and working pressure. Under the buffering effect of the total throttle hole 31, the pressure oil with appropriate pressure enters the left chamber of the first two-position four-way solenoid valve assembly 3, enters the left chamber of the two-position five-way solenoid valve assembly 4 and the left chamber of the second two-position four-way solenoid valve assembly 3 through the valve body oil circuit 30, and enters the pressure oil chamber formed by the sealing and sliding cooperation of the piston assembly 24 and the hub body 26 through the pressure oil circuit 32 on the clutch shaft 11, pushing the piston assembly 24 to move toward the friction plate assembly 22, compressing the reset spring 21 and the disc spring assembly 23, and the disc spring assembly 23 pushes the active friction plate 221 and the driven friction plate 222 of the friction plate assembly 22 to clamp, and the hub body gear 16 is connected to the clutch shaft 11, so that the clutch is smoothly engaged. When the clutch is disengaged, the pressure oil in the pressure oil channel 33 is cut off, the return spring 21 and the disc spring assembly 23 return to their original positions, pushing the piston assembly 24 to move in the opposite direction toward the friction plate assembly 22, the active friction plate 221 and the driven friction plate 222 of the friction plate assembly 22 are relaxed, the hub gear 16 is separated from the clutch shaft 11, the power transmission is cut off, and the clutch is quickly disengaged.
进一步的,在所述离合器轴11两端上嵌有密封环12,用于保证离合器的密封防尘;Furthermore, sealing rings 12 are embedded on both ends of the clutch shaft 11 to ensure the sealing and dustproof of the clutch;
进一步的,所述摩擦片组件22中主动摩擦片221和从动摩擦片222均为多个,交错设置;摩擦片组件22行程末端设置有外挡圈17、压盖19,安装于毂体26内,起到限位的作用,使主动摩擦片221和从动摩擦片222可以在受力夹紧,保证动力接合的稳
定性。Furthermore, the active friction plates 221 and the driven friction plates 222 in the friction plate assembly 22 are multiple and staggered; the outer retaining ring 17 and the pressure cover 19 are provided at the end of the travel of the friction plate assembly 22, which are installed in the hub body 26 to play a role of limiting, so that the active friction plate 221 and the driven friction plate 222 can be clamped under force to ensure the stability of power engagement. Qualitative.
进一步的,为了实现毂体齿轮16的动力传输,该离合器设置有第一轴承13、第二轴承14、第三轴承15、第四轴承25。第一轴承13、第四轴承25具体为圆锥滚子轴承,设置于离合器轴11两侧。第二轴承14具体为推力轴承,由第一轴承13、内挡圈18限位。第三轴承15具体为滚针轴承,位于两个第二轴承14之间。通过各轴承的相互配合,保证了动力传递的可靠性。Furthermore, in order to realize the power transmission of the hub gear 16, the clutch is provided with a first bearing 13, a second bearing 14, a third bearing 15, and a fourth bearing 25. The first bearing 13 and the fourth bearing 25 are specifically tapered roller bearings, which are arranged on both sides of the clutch shaft 11. The second bearing 14 is specifically a thrust bearing, which is limited by the first bearing 13 and the inner retaining ring 18. The third bearing 15 is specifically a needle bearing, which is located between the two second bearings 14. The reliability of power transmission is ensured by the mutual cooperation of the bearings.
本实施例还提供一种变速箱,包含上述换档缓冲机构,换挡平稳快速,换挡舒适度好,可靠性高。The present embodiment also provides a gearbox comprising the above-mentioned gear shift buffer mechanism, which has smooth and fast gear shifting, good gear shifting comfort and high reliability.
以上仅是本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例,凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若干改进和润饰,应视为本发明的保护范围。
The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.
Claims (7)
- 一种变速箱换档缓冲机构,其特征在于:A gearbox shift buffer mechanism, characterized in that:包括换挡缓冲机构(1),所述换挡缓冲机构(1)包括具有总节流孔的外置阀总成(2)和自带碟簧组的离合器总成(7),所述外置阀总成(2)通过油路连接在离合器总成(7)中安设的各离合器上;The invention comprises a shift buffer mechanism (1), wherein the shift buffer mechanism (1) comprises an external valve assembly (2) having a total throttle hole and a clutch assembly (7) with a disc spring assembly, wherein the external valve assembly (2) is connected to each clutch installed in the clutch assembly (7) through an oil circuit;所述外置阀总成(2)包括阀体(5)及安置在阀体(5)上的三个电磁阀总成;The external valve assembly (2) comprises a valve body (5) and three solenoid valve assemblies arranged on the valve body (5);三个所述的电磁阀总成包括两个两位四通电磁阀总成(3)及一个两位五通电磁阀总成(4)、且所述两位五通电磁阀总成(4)安设于两个两位四通电磁阀总成(3)之间;The three solenoid valve assemblies include two two-position four-way solenoid valve assemblies (3) and one two-position five-way solenoid valve assembly (4), and the two-position five-way solenoid valve assembly (4) is arranged between the two two-position four-way solenoid valve assemblies (3);所述离合器总成(7)包括第一离合器(8)、第二离合器(9)及第三离合器(10);The clutch assembly (7) comprises a first clutch (8), a second clutch (9) and a third clutch (10);两个所述两位四通电磁阀总成(3)及一个所述两位五通电磁阀总成(4)通过开设的油路分别连接在离合器总成(7)中的第一离合器(8)、第二离合器(9)及第三离合器(10)上。The two two-position four-way solenoid valve assemblies (3) and the one two-position five-way solenoid valve assembly (4) are respectively connected to a first clutch (8), a second clutch (9) and a third clutch (10) in the clutch assembly (7) through the provided oil circuits.
- 根据权利要求1所述的一种变速箱换档缓冲机构,其特征在于:The gearbox shift buffer mechanism according to claim 1 is characterized in that:任意一个所述的离合器均包括离合器轴(11)、密封环(12)、第一轴承(13)、第二轴承(14)、第三轴承(15)、毂体齿轮(16)、外挡圈(17)、内挡圈(18)、压盖(19)、弹簧座(20)、复位弹簧(21)、摩擦片组件(22)、碟簧组件(23)、活塞组件(24)、第四轴承(25)、毂体(26)及固定齿轮(27);Any of the clutches described above comprises a clutch shaft (11), a sealing ring (12), a first bearing (13), a second bearing (14), a third bearing (15), a hub gear (16), an outer retaining ring (17), an inner retaining ring (18), a gland (19), a spring seat (20), a return spring (21), a friction plate assembly (22), a disc spring assembly (23), a piston assembly (24), a fourth bearing (25), a hub (26) and a fixed gear (27);所述毂体(26)与离合器轴(11)之间焊接固定、且通过止口轴向定位形成包裹离合器其他部件的内腔;The hub body (26) and the clutch shaft (11) are welded and fixed, and are axially positioned through a stopper to form an inner cavity that encloses other components of the clutch;所述固定齿轮(27)通过过盈配合压装在离合器轴(11)上,其左侧由毂体(26)定位,右侧由安装在离合器轴沟槽的挡圈定位;The fixed gear (27) is press-fitted onto the clutch shaft (11) by interference fit, with the left side of the fixed gear (27) positioned by the hub body (26) and the right side positioned by a retaining ring installed in the clutch shaft groove;所述活塞组件(24)穿过离合器轴(11)装配于毂体(26)的内腔底部;The piston assembly (24) passes through the clutch shaft (11) and is assembled on the bottom of the inner cavity of the hub body (26);所述碟簧组件(23)穿过离合器轴(11)装配于毂体(26)的内侧并紧贴活塞组件(24)的左端面;The disc spring assembly (23) passes through the clutch shaft (11) and is assembled on the inner side of the hub body (26) and is closely attached to the left end surface of the piston assembly (24);所述复位弹簧(21)、弹簧座(20)与1个内挡圈(18)依次穿过离合器轴(11)装配于毂体(26)的内侧;The return spring (21), the spring seat (20) and an inner retaining ring (18) sequentially pass through the clutch shaft (11) and are assembled on the inner side of the hub body (26);其中,所述复位弹簧(21)贴紧在活塞组件(24)的左端面,所述弹簧座(20)贴紧复位弹簧(21),所述内挡圈(18)嵌入在离合器轴(11)的沟槽中对弹簧座(20)限位;The return spring (21) is closely attached to the left end surface of the piston assembly (24), the spring seat (20) is closely attached to the return spring (21), and the inner retaining ring (18) is embedded in the groove of the clutch shaft (11) to limit the spring seat (20);所述摩擦片组件(22)包括若干个主动摩擦片(221)及从动摩擦片(222),The friction plate assembly (22) comprises a plurality of active friction plates (221) and driven friction plates (222).所述摩擦片组件(22)以若干主动摩擦片(221)及从动摩擦片(222)交替排列的方式穿过离合器轴(11),通过内外花键啮合的方式装配于毂体(26)的内侧,并紧贴碟簧组件(23)的左端面; The friction plate assembly (22) passes through the clutch shaft (11) in the form of a plurality of active friction plates (221) and driven friction plates (222) arranged alternately, is assembled on the inner side of the hub body (26) by means of internal and external spline meshing, and is closely attached to the left end surface of the disc spring assembly (23);所述压盖(19)穿过离合器轴(11)装配于毂体(26)内侧并位于摩擦片组件(22)的左侧;The pressure cover (19) passes through the clutch shaft (11) and is assembled on the inner side of the hub body (26) and is located on the left side of the friction plate assembly (22);所述外挡圈(17)位于压盖(19)的左侧并嵌入至毂体(26)中从而限制所述活塞组件(24)、碟簧组件(23)、摩擦片组件(22)和压盖(19)的轴向运动;The outer retaining ring (17) is located on the left side of the gland (19) and is embedded in the hub body (26) so as to limit the axial movement of the piston assembly (24), the disc spring assembly (23), the friction plate assembly (22) and the gland (19);所述另一个内挡圈(18)嵌入离合器轴(11)的另一个沟槽中,且位于所述弹簧座(20)限位的沟槽左侧;The other inner retaining ring (18) is embedded in another groove of the clutch shaft (11) and is located on the left side of the groove where the spring seat (20) is limited;所述第二轴承(14)穿过离合器轴(11),其右侧与内挡圈(18)左侧贴紧;The second bearing (14) passes through the clutch shaft (11), and its right side is tightly attached to the left side of the inner retaining ring (18);所述第三轴承(15)和毂体齿轮(16)依次穿过离合器轴(11)后共同紧贴在第二轴承(14)的左侧;The third bearing (15) and the hub gear (16) pass through the clutch shaft (11) in sequence and then are closely attached to the left side of the second bearing (14);所述第三轴承(15)位于毂体齿轮(16)与离合器轴(11)之间;The third bearing (15) is located between the hub gear (16) and the clutch shaft (11);所述毂体齿轮(16)以内外花键啮合的方式与摩擦片组件(22)相连接;The hub gear (16) is connected to the friction plate assembly (22) in an internal and external spline meshing manner;所述另一个第三轴承(15)穿过离合器轴(11)右端面贴紧毂体齿轮(16)左端面;The other third bearing (15) passes through the right end surface of the clutch shaft (11) and is close to the left end surface of the hub gear (16);所述第一轴承(13)及第四轴承(25)装配于离合器轴(11)两端轴肩,所述密封环(12)嵌入离合器轴(11)两端沟槽。The first bearing (13) and the fourth bearing (25) are mounted on the shaft shoulders at both ends of the clutch shaft (11), and the sealing ring (12) is embedded in the grooves at both ends of the clutch shaft (11).
- 根据权利要求1所述的一种变速箱换档缓冲机构,其特征在于:The gearbox shift buffer mechanism according to claim 1 is characterized in that:所述碟簧组件(23)包括碟簧和碟簧座,其结构与液压系统油压和离合器结构参数相匹配。The disc spring assembly (23) comprises a disc spring and a disc spring seat, and its structure matches the oil pressure of the hydraulic system and the structural parameters of the clutch.
- 根据权利要求1所述的一种变速箱换档缓冲机构,其特征在于:The gearbox shift buffer mechanism according to claim 1 is characterized in that:所述活塞组件(24)包括活塞和密封件,与所述毂体(26)和离合器轴(11)密封滑动配合,形成压力油腔。The piston assembly (24) comprises a piston and a sealing member, which is in sealing and sliding cooperation with the hub body (26) and the clutch shaft (11) to form a pressure oil chamber.
- 根据权利要求1所述的一种变速箱换档缓冲机构,其特征在于:The gearbox shift buffer mechanism according to claim 1 is characterized in that:在所述离合器轴(11)内开设有压力油道(33)和润滑油道(32)。A pressure oil passage (33) and a lubricating oil passage (32) are provided in the clutch shaft (11).
- 根据权利要求1所述的一种变速箱换档缓冲机构,其特征在于:The gearbox shift buffer mechanism according to claim 1 is characterized in that:在所述阀体(5)上开设有总节流孔(31)、阀体油道(30)及电磁阀安装孔;The valve body (5) is provided with a total throttle hole (31), a valve body oil passage (30) and a solenoid valve mounting hole;其中,所述阀体油道(30)连接各离合器油路;Wherein, the valve body oil passage (30) is connected to each clutch oil circuit;所述电磁阀安装孔用以安装电磁阀。The solenoid valve installation hole is used for installing the solenoid valve.
- 根据权利要求6所述的一种变速箱换档缓冲机构,其特征在于:The gearbox shift buffer mechanism according to claim 6 is characterized in that:还包括组合阀(6),所述还包括组合阀(6)通过油路连接在外置阀总成(2)的总节流孔(31)上。 It also includes a combined valve (6), which is connected to the main throttle hole (31) of the external valve assembly (2) through an oil circuit.
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CN116428356A (en) * | 2022-12-20 | 2023-07-14 | 徐州徐工传动科技有限公司 | Gear shifting buffer mechanism of gearbox |
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2022
- 2022-12-20 CN CN202211639033.1A patent/CN116428356A/en active Pending
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