WO2020063454A1 - 一种传动箱箱体与传动轴的连接结构 - Google Patents

一种传动箱箱体与传动轴的连接结构 Download PDF

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Publication number
WO2020063454A1
WO2020063454A1 PCT/CN2019/106818 CN2019106818W WO2020063454A1 WO 2020063454 A1 WO2020063454 A1 WO 2020063454A1 CN 2019106818 W CN2019106818 W CN 2019106818W WO 2020063454 A1 WO2020063454 A1 WO 2020063454A1
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Prior art keywords
oil
transmission shaft
seal
bearing
groove
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PCT/CN2019/106818
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English (en)
French (fr)
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季明烨
王涤成
孙洪良
吴新芳
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江苏悦达专用车有限公司
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Publication of WO2020063454A1 publication Critical patent/WO2020063454A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • 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
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant

Definitions

  • the invention relates to a connection structure between a transmission box body and a transmission shaft.
  • An existing transmission case includes a case body and a transmission shaft.
  • Bearing holes are respectively provided on the end faces of the two opposite side walls of the box.
  • Bearings are set on both ends of the transmission shaft, and the bearings fitted on both ends of the transmission shaft are respectively installed on the end faces of the two opposite side walls of the box.
  • bearing end covers are respectively provided at both ends of the transmission shaft, and the bearing end covers provided at both ends of the transmission shaft are respectively fixed on the end faces of two opposite side walls of the box by bolts.
  • a seal ring groove is usually provided in the bearing cover.
  • the seal ring groove is provided with a seal ring, but in practical applications , The sealing effect is not good, there is still leakage of lubricant from the box.
  • the technical problem to be solved by the present invention is to provide a connection structure between a transmission case and a transmission shaft, and the connection structure of the transmission case and the transmission shaft can prevent the lubricant from leaking out of the case.
  • the present invention relates to a connection structure between a transmission box body and a transmission shaft, which includes a box body and a transmission shaft.
  • Bearing surfaces of two opposite side walls of the box body are respectively provided with bearing holes, and two ends of the transmission shaft are respectively Bearings are set, and the bearings at both ends of the transmission shaft are respectively installed in bearing holes provided on the end faces of two opposite side walls of the box.
  • Bearing ends are respectively installed at the two ends of the transmission shaft, and two ends of the transmission shaft are provided.
  • the bearing end caps are respectively fixed on the end faces of two opposite side walls of the box by bolts.
  • the bearing end caps include an outer end face, a mounting surface and an inner end face, and the inner end face of the bearing end cover is pressed against the end face of the outer ring of the bearing;
  • An oil seal matching hole is provided on the outer end surface of the bearing end cover.
  • An oil seal is installed in the oil seal matching hole.
  • a gland is provided on the outside of the oil seal. The gland is provided on the bearing end cover, and an oil seal is formed between the oil seal and the transmission shaft.
  • a seal is provided on the mounting surface of the bearing end cover.
  • a seal ring groove is installed on the bearing end cover. The seal ring forms a seal between the bearing end cover and the end face of the casing.
  • the inner center of the cover is provided Envelope, and in turn an annular oil groove labyrinth seal groove on the inner surface of the sealing sleeve, it is provided with V-shaped guide groove on the outer surface of the sealing sleeve, the V-groove flow communication with the annular oil groove through an oil return hole in a lower portion;
  • the oil deflector is composed of a sleeve and an oil retaining ring.
  • the oil retaining ring is arranged on one end of the sleeve.
  • the inner surface of the sleeve near the oil retaining ring is provided with a seal groove 2.
  • the seal The second groove is provided with a second seal ring, and an internal thread is provided on the inner surface of the sleeve away from the oil retaining ring.
  • the internal thread is connected with the external thread provided on the transmission shaft.
  • the oil retaining ring is a circular arc surface, a spiral pattern is arranged on the circular arc surface, and the circular arc is inclined outward.
  • the oil retaining ring is a circular annular oil retaining ring, and spiral blades are evenly distributed on the annular ring.
  • FIG. 1 is a structural schematic diagram of a connection structure between a transmission box body and a transmission shaft according to the present invention
  • FIG. 1 is a structural diagram of the oil stopper:
  • FIG. 3 is a schematic view of the right-side structure of FIG. 2.
  • the present invention discloses a connection structure between a transmission case and a transmission shaft, which includes a case 10 and a transmission shaft 1.
  • Bearing holes are respectively provided on the end surfaces of two opposite side walls of the casing 10, and bearings 9 are respectively mounted on both ends of the transmission shaft 1, and the bearings 9 are mounted on both opposite sides of the transmission shaft 1, respectively, on the opposite sides of the casing 10
  • a bearing hole provided on an end surface of the wall.
  • Bearing ends 4 are respectively mounted on both ends of the transmission shaft 1.
  • Bearing end covers 4 mounted on both ends of the transmission shaft 1 are respectively fixed on the end faces of two opposite side walls of the box body 10 by bolts.
  • the bearing end cover 4 includes an outer end surface, a mounting surface, and an inner end surface.
  • the inner end surface of the bearing end cover 4 is pressed against the end surface of the outer ring of the bearing 9.
  • An oil-sealing matching hole is provided on the outer end surface of the bearing end cover 4, and an oil seal 3 is installed in the oil-sealing matching hole.
  • a gland 2 is provided on the outside of the oil seal 3, and the gland 2 is disposed on the bearing end cover 4.
  • a seal is formed between the oil seal 3 and the transmission shaft 1.
  • the bearing end cover 4 is provided with a seal ring groove 1 on the mounting surface thereof.
  • the seal ring groove 1 is provided with a seal ring 5.
  • the seal ring 5 forms a seal between the bearing end cover 4 and the end face of the box 10 to block.
  • the inner end of the bearing end cover 4 is provided with a sealing sleeve.
  • An inner surface of the sealing sleeve is provided with an annular oil groove 15 and a labyrinth sealing groove 11 in this order.
  • a sealing groove 16 is provided on the outer surface of the sealing sleeve.
  • the deflector 16 communicates with the annular oil groove 15 at the lower portion through an oil return hole 14. As shown in Figures 2 and 3, it also contains an oil deflector.
  • the oil deflector is composed of a sleeve 13 and an oil retaining ring 6.
  • the oil retaining ring 6 is arranged on one end of the sleeve 13, and the sleeve 13 is close to the oil retaining ring 6.
  • a sealing groove 2 is provided on an inner surface of one side, and a sealing ring 2 7 is installed on the sealing surface of the second groove.
  • An inner thread 8 is provided on an inner surface of the sleeve 13 facing away from the slinger 6. The inner thread 8 It is connected with the external thread provided on the transmission shaft 1.
  • a stop washer 12 is installed between the sleeve 13 and the inner ring of the bearing 9. The stop washer 12 locks the oil stopper to prevent loosening.
  • the oil retaining ring 6 is a circular arc surface, a spiral pattern 17 is provided on the circular arc surface, and the circular arc is inclined to the outside.
  • the oil retaining ring 6 is a circular annular oil retaining ring, and spiral blades are evenly distributed on the annular ring.
  • the rotating spiral blade will push most of the lubricating oil in the bearing end cover 4 in the direction of the bearing 9 without entering the shaft.
  • the flow of a little lubricating oil after entering the outside of the oil deflector is the same as that described in the previous paragraph, and will not be repeated here.
  • connection structure of the transmission box body and the transmission shaft since an oil stopper is provided, and a sealing sleeve is provided in the inner center of the bearing end cover 4, it can be seen from the above that the transmission box body and the transmission shaft
  • the connection structure can prevent the lubricant from leaking out of the casing 10.

Abstract

一种传动箱箱体与传动轴的连接结构,含有箱体（10）和传动轴（1），传动轴（1）两端装有的轴承端盖（4）通过螺栓分别固定在箱体（10）两相对侧壁的端面上，轴承端盖（4）的安装面设有密封圈沟槽一，该密封圈沟槽一安装有密封圈一（5），轴承端盖（4）的内部中央设有密封套，密封套的内表面上依次设有环形油沟（15）和迷宫密封槽（11），密封套的外表面上设有V型导流槽（16），V型导流槽（16）与环形油沟（15）在下部通过回油孔（14）连通；还含有挡油器，挡油器由套管（13）和挡油环（6）构成，挡油环（6）设置在套管（13）的一端上，套管（13）靠近挡油环（6）一侧的内表面上设有密封沟槽二，该密封沟槽二安装有密封圈二（7），套管（13）远离挡油环（6）一侧的内表面上设有一段内螺纹（8），该内螺纹（8）与传动轴（1）上设有的外螺纹相连，套管（13）与轴承（9）内圈之间装有止动垫圈（12）。该连接结构能够避免润滑油从箱体内泄露出来。

Description

一种传动箱箱体与传动轴的连接结构 技术领域
本发明涉及一种传动箱箱体与传动轴的连接结构。
背景技术
现有的一种传动箱，含有箱体和传动轴。箱体两相对侧壁的端面上分别设有轴承孔，传动轴的两端部分别套装有轴承，传动轴的两端部套装有的轴承分别装在箱体两相对侧壁的端面上分别设有的轴承孔中，传动轴两端分别装有轴承端盖，传动轴两端装有的轴承端盖通过螺栓分别固定在箱体两相对侧壁的端面上。现有技术为了防止箱体内的润滑油通过轴承端盖与传动轴之间的间隙流出，通常在轴承盖中设有密封圈沟槽，该密封圈槽内装有封密圈，但在实际应用中，封密效果并不好，还是有润滑油从箱体内泄漏出来。
发明内容
本发明所要解决的技术问题提供一种传动箱箱体与传动轴的连接结构，该传动箱箱体与传动轴的连接结构能够避免润滑油从箱体内泄漏出来。
为解决上述技术问题，本发明一种传动箱箱体与传动轴的连接结构，含有箱体和传动轴，箱体两相对侧壁的端面上分别设有轴承孔，传动轴的两端部分别套装有轴承，传动轴的两端部套装有的轴承分别装在箱体两相对侧壁的端面上设有的轴承孔中，传动轴两端分别装有轴承端盖，传动轴两端装有的轴承端盖通过螺栓分别固定在箱体两相对侧壁的端面上，轴承端盖包括外端面、安装面和内端面，轴承端盖的内端面顶在轴承的外圈的端面上；所述轴承端盖的外端面上设有油封装配孔，油封安装在该油封装配孔内，油封的外侧设有压盖，该压盖设置在所述轴承端盖上，油封与传动轴之间形成一道密封，所述轴承端盖的安装面设有密封圈沟槽一，该密封圈沟槽一安装有密封圈一，密封圈一在轴承端盖与箱体端面之间形成密封，所述轴承端盖的内部中央设有密封套，密封套的内表面上依次设有环形油沟和迷宫密封槽，密封套的外表面上设有V型导流槽，V型导流槽与环形油沟在下部通过回油孔连通；
还含有挡油器，挡油器由套管和挡油环构成，挡油环设置在套管的一端上，套管靠近挡油环一侧的内表面上设有密封沟槽二，该密封沟槽二安装有密封圈二，套管远离挡油环一侧的内表面上设有一段内螺纹，该内螺纹与传动轴上设有的外螺纹相连，套管与轴承内圈之间装有止动垫圈。
所述挡油环为环形圆弧面，环形圆弧面上设有螺旋纹路，环形圆弧面向外侧倾斜。
所述挡油环为圆环形挡油环，圆环形上均布螺旋叶片。
在上述传动箱箱体与传动轴的连接结构中，由于设有挡油器，且在轴承端盖的内部中央设有密封套，因此能够避免润滑油从箱体内泄漏出来。
附图说明
图1是本发明传动箱箱体与传动轴的连接结构结构示意图；
图2是挡油器结构示意图：
图3是图2的右视结构示意图。
具体实施方式
图1中，本发明公开了一种传动箱箱体与传动轴的连接结构，含有箱体10和传动轴1。箱体10两相对侧壁的端面上分别设有轴承孔，传动轴1的两端部分别套装有轴承9，传动轴1的两端部套装有的轴承9分别装在箱体10两相对侧壁的端面上设有的轴承孔中。传动轴1两端分别装有轴承端盖4。传动轴1两端装有的轴承端盖4通过螺栓分别固定在箱体10两相对侧壁的端面上。轴承端盖4包括外端面、安装面和内端面。轴承端盖4的内端面顶在轴承9的外圈的端面上。所述轴承端盖4的外端面上设有油封装配孔，油封3安装在该油封装配孔内。油封3的外侧设有压盖2，该压盖2设置在所述轴承端盖4上。油封3与传动轴1之间形成一道密封。所述轴承端盖4的安装面设有密封圈沟槽一，该密封圈沟槽一安装有密封圈一5，密封圈一5在轴承端盖4与箱体10端面之间形成密封，阻挡了润滑油从轴承端盖4与箱体10端面之间的泄漏。所述轴承端盖4的内部中央设有密封套，密封套的内表面上依次设有环形油沟15和迷宫密封槽11，密封套的外表面上设有V型导流槽16，V型导流槽16与环形油沟15在下部通过回油孔14连通。如图2和图3所示，还含有挡油器，挡油器由套管13和挡油环6构成，挡油环6设置在套管13的一端上，套管13靠近挡油环6一侧的内表面上设有密封沟槽二，该密封沟槽二安装有密封圈二7，套管13远离挡油环6一侧的内表面上设有一段内螺纹8，该内螺纹8与传动轴1上设有的外螺纹相连，套管13与轴承9内圈之间装有止动垫圈12，止动垫圈12锁住挡油器，防止松动。
为进一步提高挡油和润滑效果，所述挡油环6为环形圆弧面，环形圆弧面上设有螺旋纹路17，环形圆弧面向外侧倾斜。通过上述设计，当传动轴旋转时，挡油器一起旋转，轴承端盖4内的大部分润滑油在挡油环6环形圆弧面上设有的螺旋纹路17转动形成的离心力作用下向轴承9方向流动，而不会进入轴身上。少许润滑油进入挡油器的外侧后，一部分的润滑油经过轴承端盖4密封套的V型导流槽16流向密封套的下方进入轴承端盖4的内下部，另一部分的润滑油通过密封套的迷宫密封槽11进入环形油沟15并经过回油孔14流入 轴承端盖4的内下部。
作为另一种改进，所述挡油环6为圆环形挡油环，圆环形上均布螺旋叶片。旋转的螺旋叶片会将轴承端盖4内的大部分润滑油推向轴承9方向，而不会进入轴身上。少许润滑油进入挡油器的外侧后的流向与上段所述相同，这里不复述。
在上述传动箱箱体与传动轴的连接结构中，由于设有挡油器，且在轴承端盖4的内部中央设有密封套，从上可以看出，上述传动箱箱体与传动轴的连接结构能够避免润滑油从箱体10内泄漏出来。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (3)

  1. 一种传动箱箱体与传动轴的连接结构，含有箱体和传动轴，箱体两相对侧壁的端面上分别设有轴承孔，传动轴的两端部分别套装有轴承，传动轴的两端部套装有的轴承分别装在箱体两相对侧壁的端面上设有的轴承孔中，传动轴两端分别装有轴承端盖，传动轴两端装有的轴承端盖通过螺栓分别固定在箱体两相对侧壁的端面上，轴承端盖包括外端面、安装面和内端面，轴承端盖的内端面顶在轴承的外圈的端面上；其特征在于，所述轴承端盖的外端面上设有油封装配孔，油封安装在该油封装配孔内，油封的外侧设有压盖，该压盖设置在所述轴承端盖上，油封与传动轴之间形成一道密封，所述轴承端盖的安装面设有密封圈沟槽一，该密封圈沟槽一安装有密封圈一，密封圈一在轴承端盖与箱体端面之间形成密封，所述轴承端盖的内部中央设有密封套，密封套的内表面上依次设有环形油沟和迷宫密封槽，密封套的外表面上设有V型导流槽，V型导流槽与环形油沟在下部通过回油孔连通；
    还含有挡油器，挡油器由套管和挡油环构成，挡油环设置在套管的一端上，套管靠近挡油环一侧的内表面上设有密封沟槽二，该密封沟槽二安装有密封圈二，套管远离挡油环一侧的内表面上设有一段内螺纹，该内螺纹与传动轴上设有的外螺纹相连，套管与轴承内圈之间装有止动垫圈。
  2. 根据权利要求1所述一种传动箱箱体与传动轴的连接结构，其特征在于，所述挡油环为环形圆弧面，环形圆弧面上设有螺旋纹路，环形圆弧面向外侧倾斜。
  3. 根据权利要求1所述一种传动箱箱体与传动轴的连接结构，其特征在于，所述挡油环为圆环形挡油环，圆环形上均布螺旋叶片。
PCT/CN2019/106818 2018-09-24 2019-09-19 一种传动箱箱体与传动轴的连接结构 WO2020063454A1 (zh)

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