WO2022246879A1 - 齿轮箱动力输出结构 - Google Patents

齿轮箱动力输出结构 Download PDF

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Publication number
WO2022246879A1
WO2022246879A1 PCT/CN2021/097609 CN2021097609W WO2022246879A1 WO 2022246879 A1 WO2022246879 A1 WO 2022246879A1 CN 2021097609 W CN2021097609 W CN 2021097609W WO 2022246879 A1 WO2022246879 A1 WO 2022246879A1
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WO
WIPO (PCT)
Prior art keywords
main shaft
power output
boss
output structure
way
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PCT/CN2021/097609
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English (en)
French (fr)
Inventor
莫丹君
张道帮
应福明
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浙江宏业高科智能装备股份有限公司
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Publication of WO2022246879A1 publication Critical patent/WO2022246879A1/zh

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Classifications

    • 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
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • 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

Definitions

  • the utility model belongs to the technical field of machinery, and relates to a double-shaft gearbox, in particular to a gearbox power output structure.
  • a gearbox is an independent component consisting of a gear drive, a worm drive, and a gear-worm drive enclosed in a rigid box, and is widely used in modern machinery.
  • the gearboxes are divided into single output shaft gearboxes, double output shaft gearboxes and multi output shaft gearboxes.
  • the double-output shaft gearbox such as a double-output-shaft gearbox disclosed in the Chinese patent library (application number: 201010539964.5)
  • the double-output shaft gearbox includes a casing, a driving gear, a driven gear, a processing spindle, a bearing seat and a front end cover.
  • two processing spindles are arranged side by side.
  • the middle parts of the two processing spindles are respectively installed in two sets of bearings arranged side by side in the bearing seat.
  • the inner ends of the two processing spindles are respectively fixed with driven gears.
  • the driving gear is an outer diameter gear and is co-engaged and installed inside a driving gear.
  • the driving gear is an inner diameter gear, and the driving gear is coaxially fixed with a connecting shaft.
  • the two processing spindles arranged side by side can only rotate synchronously, and their functionality is relatively single. .
  • the purpose of the utility model is to solve the above-mentioned problems in the existing technology, and propose a gear box power output structure for switching between single and double output.
  • the power output structure of the gearbox including the box body, the transmission gear located in the box body, and the main shaft and the auxiliary shaft arranged in the box body by horizontal rotation, and the main shaft and the auxiliary shaft are coaxial set, and both the front end of the main shaft and the rear end of the auxiliary shaft protrude from the box, and the transmission gear is fixedly connected with the main shaft.
  • the installation groove and the main shaft are coaxial, and the boss is located in the installation groove; the boss is covered with a one-way bearing, and the one-way bearing includes a one-way inner ring and a one-way outer ring, and the one-way inner ring and one-way outer ring are respectively It is fixedly connected with the boss and the main shaft; the rear end face of the one-way inner ring is tightly pressed on the front face of the auxiliary shaft, and the mounting groove is provided with a supporting surface for the front end face of the one-way outer ring to be pressed tightly.
  • the auxiliary shaft and the main shaft are connected by one-way bearings, so that the auxiliary shaft and the main shaft are driven in one direction to form two transmission modes: 1.
  • the auxiliary shaft and the main shaft rotate synchronously; 2. Only the main shaft rotates, so as to adapt to the above two transmission modes Different working conditions (for example, the main shaft and the auxiliary shaft are connected to the power mechanism at the same time or the main shaft is connected to the power mechanism, and the auxiliary shaft is used to detect the rotation speed), and the practicability is better.
  • a gasket is fixed in the above-mentioned installation groove, and the gasket is coaxial with the main shaft, the front end of the gasket is pressed against the bottom wall of the installation groove, and the rear end of the gasket is the above-mentioned supporting surface.
  • a gasket is arranged in the installation groove to support the one-way outer ring, so that by changing the height of the gasket, it can adapt to different installation positions of the one-way bearing and facilitate assembly.
  • the bottom wall of the installation groove is the above-mentioned supporting surface.
  • a guide hole facing the convex post is penetrated through the gasket, and the front end of the convex post is inserted into the guide hole.
  • surface, the side wall of the boss and the wall of the guide hole are in close contact.
  • the boss and the guide hole cooperate to support and limit the boss in the radial direction, effectively improving the positioning strength of the auxiliary shaft, and improving the transmission accuracy and stability.
  • the outer side wall of the gasket and the side wall of the installation groove are circumferential surfaces that match each other and are pasted together to guide the installation of the gasket, so that the gasket can be installed in place at one time, improving the convenience of assembly .
  • the main shaft is integrally formed on the outside of the installation groove with a ring of convex strips distributed along the circumference of the main shaft, and the length of the convex strips extends along the axial direction of the main shaft to strengthen the strength of the side wall of the installation groove and ensure the transmission. stability and precision.
  • the countershaft is rotationally connected with the box body through a rolling bearing.
  • the rolling bearing includes a rolling inner ring fixedly connected with the countershaft and a rolling outer ring fixedly connected with the box body. Press on the ribs and spindle. That is to say, in this application, the convex strips are not only used to strengthen the side wall strength of the main shaft at the installation groove, but also used to limit and support the rolling inner ring, so that the convex strips have the effect of dual-purpose, so as to simplify the structure and facilitate assembly .
  • the gasket is fixedly connected to the main shaft by welding.
  • the gasket is closely fitted and fixedly connected with the main shaft.
  • the inner side wall of the unidirectional inner ring is axially penetrated with a keyway, and the side wall of the protruding post is fixed with a key piece matching the keyway, and the key piece is clamped in the keyway to improve the single
  • the concentricity between the inner ring and the auxiliary shaft ensures transmission accuracy and stability.
  • the gearbox power output structure has the following advantages:
  • the auxiliary shaft and the main shaft are connected by one-way bearings, so that the auxiliary shaft and the main shaft are driven in one direction to form two transmission modes: 1.
  • the auxiliary shaft and the main shaft rotate synchronously; 2. Only the main shaft rotates to pass the above two transmission modes
  • the main shaft and the auxiliary shaft are connected to the power mechanism at the same time or the main shaft is connected to the power mechanism, and the auxiliary shaft is used to detect the rotation speed
  • the practicability is better.
  • a gasket is installed in the installation groove to support the one-way outer ring, so that by changing the height of the gasket, it can adapt to different installation positions of the one-way bearing and facilitate assembly.
  • the gasket is not only used to support and limit the forward movement of the one-way bearing, but also uses the guide hole set on the gasket to radially support the convex column. Simplify the structure and facilitate assembly.
  • Fig. 1 is a schematic diagram of the power output structure of the gearbox.
  • FIG. 2 is a schematic diagram of an enlarged structure at point A in FIG. 1 .
  • Fig. 3 is a rear view structural schematic diagram of the main shaft.
  • Fig. 4 is a schematic diagram of the front view of the auxiliary shaft.
  • the power output structure of the gearbox includes a case body 1 , a transmission gear 2 arranged in the case body 1 , and a main shaft 3 and a counter shaft 4 arranged in the case body 1 to rotate horizontally.
  • the main shaft 3 and the auxiliary shaft 4 are coaxially arranged, and at this time, the main shaft 3 and the auxiliary shaft 4 are distributed in a straight line. Both the front end of the main shaft 3 and the rear end of the auxiliary shaft 4 protrude from the casing 1, and both the main shaft 3 and the auxiliary shaft 4 form a seal between the oil seal 5 and the casing 1. Both the main shaft 3 and the auxiliary shaft 4 are rotationally connected with the casing 1 through rolling bearings 6 , and the two rolling bearings 6 are located between the two oil seals 5 .
  • Rolling bearing 6 is an existing product, and it can be bought on the market.
  • the transmission gear 2 is sleeved on the main shaft 3, and the transmission gear 2 and the main shaft 3 are fixedly connected.
  • the rear end of the main shaft 3 is axially provided with a mounting groove 3 a, and the notch of the mounting groove 3 a is set facing backward.
  • a boss 4a is integrally formed on the front end of the auxiliary shaft 4, the boss 4a, the installation groove 3a and the main shaft 3 are coaxial, and the boss 4a is located in the installation groove 3a.
  • the front end of the auxiliary shaft 4 extends into the installation groove 3a, and the boss 4a is completely located in the installation groove 3a.
  • the boss 4a is covered with a one-way bearing 7, and the one-way bearing 7 includes a one-way inner ring 7a and a one-way outer ring 7b, and the one-way inner ring 7a and the one-way outer ring 7b are fixedly connected with the boss 4a and the main shaft 3 respectively.
  • the one-way bearing 7 is an existing product, which can be bought on the market; the rear end surface of the one-way inner ring 7a is pressed tightly on the front end surface of the countershaft 4, and the front end surface of the one-way outer ring 7b is provided in the installation groove 3a.
  • the tightly pressed supporting surface; the unidirectional inner ring 7a and the unidirectional outer ring 7b are respectively fixedly connected with the boss 4a and the main shaft 3 by way of interference fit.
  • the inner side wall of the one-way inner ring 7a is axially penetrated with a keyway, and the side wall of the boss 4a is fixed with a key block 8 matching the keyway, and the key block 8 is snapped into the keyway to improve the unidirectional inner ring. 7a and the concentricity of the countershaft 4 ensure transmission accuracy and stability.
  • the auxiliary shaft 4 and the main shaft 3 are connected by a one-way bearing 7, so that the auxiliary shaft 4 and the main shaft 3 are unidirectionally transmitted to form two transmission modes: 1.
  • the auxiliary shaft 4 and the main shaft 3 rotate synchronously; 2. Only the main shaft 3 rotates, and the The above two transmission modes are used to adapt to different working conditions (for example, the main shaft 3 and the auxiliary shaft 4 are connected to the power mechanism at the same time or the main shaft 3 is connected to the power mechanism, and the auxiliary shaft 4 is used to detect the rotation speed), which is more practical.
  • a gasket 9 is fixed in the mounting groove 3a, and the gasket 9 is coaxial with the main shaft 3, the front end of the gasket 9 is pressed against the bottom wall of the mounting groove 3a, and the rear end of the gasket 9 is the the support surface.
  • a spacer 9 is provided in the installation groove 3a to support the one-way outer ring 7b, so that by changing the height of the spacer 9, different installation positions of the one-way bearing 7 can be adapted to facilitate assembly.
  • the outer side wall of the gasket 9 and the side wall of the installation groove 3a are circumferential surfaces that match each other and stick together, and the gasket 9 is fixedly connected with the main shaft 3 by welding, naturally, the gasket 9 is fixedly connected with the main shaft 3 by a tight fit it is also fine.
  • the gasket 9 is penetrated with a guide hole 9a facing the boss 4a, the front end of the boss 4a is inserted into the guide hole 9a, the boss 4a is cylindrical, and the wall of the guide hole 9a is matched with the boss 4a On the circumferential surface, the side wall of the boss 4a is in close contact with the hole wall of the guide hole 9a.
  • the boss 4a cooperates with the guide hole 9a to support and limit the boss 4a in the radial direction, effectively improving the positioning strength of the auxiliary shaft 4 to improve the transmission accuracy and stability.
  • the rolling bearing 6 connected to the auxiliary shaft 4 includes a rolling inner ring 6a fixedly connected to the auxiliary shaft 4 and a rolling outer ring 6b fixedly connected to the case 1, and the main shaft 3 is outside the installation groove 3a
  • a ring of convex strips 3b distributed along the circumferential direction of the main shaft 3 is integrally formed, and the length of the convex strips 3b extends axially along the main shaft 3 to strengthen the side wall of the installation groove 3a.
  • the rear end surface of the convex strip 3b extends to the rear end surface of the main shaft 3, and the front end surface of the rolling inner ring 6a is pressed against the convex strip 3b and the main shaft 3 at the same time, that is, in this application, the convex strip 3b is used to strengthen the main shaft 3
  • the strength of the side wall at the installation groove 3a is also used to limit and support the rolling inner ring 6a, so that the convex strip 3b has the effect of one object and two purposes, so as to simplify the structure and facilitate assembly.
  • the structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the bottom wall of the installation groove 3a is the above-mentioned supporting surface.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

本实用新型提供了一种齿轮箱动力输出结构，属于机械技术领域。本齿轮箱动力输出结构包括箱体、设于箱体内的传动齿轮以及均水平转动设置在箱体内的主轴和副轴，主轴和副轴同轴设置，且主轴前端和副轴后端均伸出箱体，传动齿轮与主轴固连，主轴后端轴向设有安装槽，副轴前端面上一体成型有凸柱，凸柱、安装槽和主轴三者同轴，凸柱位于安装槽内；凸柱外套有单向轴承，单向轴承包括单向内圈和单向外圈，单向内圈和单向外圈分别与凸柱和主轴固连；单向内圈后端面紧压在副轴前端面上，安装槽内设有供单向外圈前端面紧压的支撑面。本齿轮箱动力输出结构可实现单双边输出切换。

Description

齿轮箱动力输出结构 技术领域
本实用新型属于机械技术领域，涉及一种双轴齿轮箱，特别是一种齿轮箱动力输出结构。
 背景技术
 齿轮箱是一种由封闭在刚性箱体内的齿轮传动、蜗杆传动、齿轮-蜗杆传动所组成的独立部件，在现代机械中应用极为广泛。
齿轮箱根据输出轴数量分为单输出轴齿轮箱、双输出轴齿轮箱以及多输出轴齿轮箱。其中，双输出轴齿轮箱如中国专利库公开的一种双输出轴齿轮箱（申请号：201010539964.5），包括外壳、主动齿轮、从动齿轮、加工主轴、轴承座及前端盖，外壳内安装主动齿轮及从动齿轮，加工主轴为并排的两个，该两个加工主轴中部分别安装于轴承座内并排的两组轴承内，该两加工主轴的内端分别固装从动齿轮，该两从动齿轮为外径齿轮并共同啮合安装于一主动齿轮内部，该主动齿轮为内径齿轮，该主动齿轮同轴固装一连接轴。
 技术问题
在上述的齿轮箱运行时，并排设置的两加工主轴只能同步旋转，功能性较为单一。。
 技术解决方案
本实用新型的目的是针对现有的技术存在上述问题，提出了一种单、双边输出切换的齿轮箱动力输出结构。
本实用新型的目的可通过下列技术方案来实现：齿轮箱动力输出结构，包括箱体、设于箱体内的传动齿轮以及均水平转动设置在箱体内的主轴和副轴，主轴和副轴同轴设置，且主轴前端和副轴后端均伸出箱体，传动齿轮与主轴固连，其特征在于，主轴后端轴向设有安装槽，副轴前端面上一体成型有凸柱，凸柱、安装槽和主轴三者同轴，凸柱位于安装槽内；凸柱外套有单向轴承，单向轴承包括单向内圈和单向外圈，且单向内圈和单向外圈分别与凸柱和主轴固连；单向内圈后端面紧压在副轴前端面上，安装槽内设有供单向外圈前端面紧压的支撑面。
副轴和主轴通过单向轴承连接，使副轴和主轴单向传动，以形成两种传动模式：1、副轴和主轴同步转动；2、只有主轴转动，以通过上述两种传动模式来适应不同工况（比如主轴和副轴同时连接动力机构或者主轴连接动力机构，副轴用来检测旋转速度），实用性较好。
在上述的齿轮箱动力输出结构中，上述的安装槽内固设有垫片，且垫片与主轴同轴，垫片前端面紧压在安装槽底壁上，且垫片后端面为上述的支撑面。在安装槽内设置垫片来支撑单向外圈，这样通过改变垫片高度便可适应单向轴承的不同安装位置，方便组装。
作为另一种方案，在上述的齿轮箱动力输出结构中，安装槽的底壁为上述的支撑面。
在上述的齿轮箱动力输出结构中，垫片上贯穿设有正对凸柱的导孔，凸柱前端插在导孔内，凸柱呈圆柱状，导孔孔壁为与凸柱匹配的圆周面，凸柱侧壁和导孔孔壁贴靠。凸柱和导孔配合，在径向上支撑、限位凸柱，有效提高副轴定位强度，来提高传动精度和稳定性。
在上述的齿轮箱动力输出结构中，垫片外侧壁和安装槽侧壁为相互匹配的圆周面并贴在一起，以对垫片安装进行导向，使垫片一次性安装到位，提高组装方便性。
在上述的齿轮箱动力输出结构中，主轴在安装槽的外侧一体成型有一圈沿主轴周向分布的凸条，且凸条长度沿主轴轴向延伸，以加强安装槽侧壁强度，确保传动的稳定性和精度。
在上述的齿轮箱动力输出结构中，副轴通过滚动轴承与箱体转动连接，滚动轴承包括与副轴固连的滚动内圈和与箱体固连的滚动外圈，滚动内圈的前端面同时紧压在凸条和主轴上。即在本申请中，凸条既用来加强主轴位于安装槽处的侧壁强度，又用于限位支撑滚动内圈，使凸条具备一物两用的效果，以通过简化结构，方便组装。
在上述的齿轮箱动力输出结构中，垫片通过焊接方式与主轴固连。
作为另一种方案，在上述的齿轮箱动力输出结构中，垫片与主轴紧密配合固连。
在上述的齿轮箱动力输出结构中，单向内圈的内侧壁上轴向贯穿有键槽，凸柱侧壁上固定有与键槽匹配的键块，且键块卡接在键槽内，以提高单向内圈和副轴的同心度，确保传动精度和稳定性。
 有益效果
与现有技术相比，本齿轮箱动力输出结构具有以下优点：
1、副轴和主轴通过单向轴承连接，使副轴和主轴单向传动，以形成两种传动模式：1、副轴和主轴同步转动；2、只有主轴转动，以通过上述两种传动模式来适应不同工况（比如主轴和副轴同时连接动力机构或者主轴连接动力机构，副轴用来检测旋转速度），实用性较好。
2、在安装槽内设置垫片来支撑单向外圈，这样通过改变垫片高度便可适应单向轴承的不同安装位置，方便组装。
3、垫片既用于支撑并限制单向轴承前移，又利用设置在垫片上的导孔对凸柱进行径向支撑，即在本申请中，垫片具备一物两用效果，在简化结构同时，方便组装。
 附图说明
图1是齿轮箱动力输出结构的示意图。
图2是图1中A处的放大结构示意图。
图3是主轴的后视结构示意图。
图4是副轴的前视结构示意图。
图中，1、箱体；2、传动齿轮；3、主轴；3a、安装槽；3b、凸条；4、副轴；4a、凸柱；5、油封；6、滚动轴承；6a、滚动内圈；6b、滚动外圈；7、单向轴承；7a、单向内圈；7b、单向外圈；8、键块；9、垫片；9a、导孔。
 本发明的最佳实施方式
以下是本实用新型的具体实施例并结合附图，对本实用新型的技术方案作进一步的描述，但本实用新型并不限于这些实施例。
实施例一
如图1所示，本齿轮箱动力输出结构包括箱体1、设于箱体1内的传动齿轮2以及均水平转动设置在箱体1内的主轴3和副轴4。
其中，
主轴3和副轴4同轴设置，此时，主轴3和副轴4呈直线分布。主轴3前端和副轴4后端均伸出箱体1，且主轴3和副轴4均通过油封5与箱体1之间形成密封。主轴3和副轴4均通过滚动轴承6与箱体1转动连接，且两滚动轴承6处于两油封5之间。滚动轴承6为现有产品，其能够在市场上买到。
传动齿轮2套在主轴3上，且传动齿轮2和主轴3固连。
如图1、图2和图4所示，主轴3后端轴向设有安装槽3a，且安装槽3a槽口朝后设置。副轴4前端面上一体成型有凸柱4a，凸柱4a、安装槽3a和主轴3三者同轴，凸柱4a位于安装槽3a内。在本实施例中，优选副轴4前端部分延伸至安装槽3a内，且凸柱4a完全位于安装槽3a内。凸柱4a外套有单向轴承7，单向轴承7包括单向内圈7a和单向外圈7b，且单向内圈7a和单向外圈7b分别与凸柱4a和主轴3固连。其中，单向轴承7为现有产品，其能够在市面上买到；单向内圈7a后端面紧压在副轴4前端面上，安装槽3a内设有供单向外圈7b前端面紧压的支撑面；单向内圈7a和单向外圈7b均通过过盈配合方式分别与凸柱4a和主轴3固连。进一步说明，单向内圈7a的内侧壁上轴向贯穿有键槽，凸柱4a侧壁上固定有与键槽匹配的键块8，且键块8卡接在键槽内，以提高单向内圈7a和副轴4的同心度，确保传动精度和稳定性。
副轴4和主轴3通过单向轴承7连接，使副轴4和主轴3单向传动，以形成两种传动模式：1、副轴4和主轴3同步转动；2、只有主轴3转动，以通过上述两种传动模式来适应不同工况（比如主轴3和副轴4同时连接动力机构或者主轴3连接动力机构，副轴4用来检测旋转速度），实用性较好。
如图2所示，安装槽3a内固设有垫片9，且垫片9与主轴3同轴，垫片9前端面紧压在安装槽3a底壁上，且垫片9后端面为上述的支撑面。在安装槽3a内设置垫片9来支撑单向外圈7b，这样通过改变垫片9高度便可适应单向轴承7的不同安装位置，方便组装。优选垫片9外侧壁和安装槽3a侧壁为相互匹配的圆周面并贴在一起，且垫片9通过焊接方式与主轴3固连，自然，垫片9通过紧配合方式与主轴3固连也是可以的。
进一步说明，垫片9上贯穿设有正对凸柱4a的导孔9a，凸柱4a前端插在导孔9a内，凸柱4a呈圆柱状，导孔9a孔壁为与凸柱4a匹配的圆周面，凸柱4a侧壁和导孔9a孔壁贴靠。凸柱4a和导孔9a配合，在径向上支撑、限位凸柱4a，有效提高副轴4定位强度，来提高传动精度和稳定性。
如图1和图3所示，与副轴4连接的滚动轴承6包括与副轴4固连的滚动内圈6a和与箱体1固连的滚动外圈6b，主轴3在安装槽3a的外侧一体成型有一圈沿主轴3周向分布的凸条3b，且凸条3b长度沿主轴3轴向延伸，以加强安装槽3a侧壁强度。进一步说明，凸条3b后端面延伸至主轴3后端面，且滚动内圈6a的前端面同时紧压在凸条3b和主轴3上，即在本申请中，凸条3b既用来加强主轴3位于安装槽3a处的侧壁强度，又用于限位支撑滚动内圈6a，使凸条3b具备一物两用的效果，以通过简化结构，方便组装。
实施例二
本实施例二同实施例一的结构及原理基本相同，不一样的地方在于：安装槽3a的底壁为上述的支撑面。
本文中所描述的具体实施例仅仅是对本实用新型精神作举例说明。本实用新型所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本实用新型的精神或者超越所附权利要求书所定义的范围。

Claims (10)

  1. 齿轮箱动力输出结构，包括箱体（1）、设于箱体（1）内的传动齿轮（2）以及均水平转动设置在箱体（1）内的主轴（3）和副轴（4），主轴（3）和副轴（4）同轴设置，且主轴（3）前端和副轴（4）后端均伸出箱体（1），传动齿轮（2）与主轴（3）固连，其特征在于，主轴（3）后端轴向设有安装槽（3a），副轴（4）前端面上一体成型有凸柱（4a），凸柱（4a）、安装槽（3a）和主轴（3）三者同轴，凸柱（4a）位于安装槽（3a）内；凸柱（4a）外套有单向轴承（7），单向轴承（7）包括单向内圈（7a）和单向外圈（7b），且单向内圈（7a）和单向外圈（7b）分别与凸柱（4a）和主轴（3）固连；单向内圈（7a）后端面紧压在副轴（4）前端面上，安装槽（3a）内设有供单向外圈（7b）前端面紧压的支撑面。
  2. 根据权利要求1所述的齿轮箱动力输出结构，其特征在于，上述的安装槽（3a）内固设有垫片（9），且垫片（9）与主轴（3）同轴，垫片（9）前端面紧压在安装槽（3a）底壁上，且垫片（9）后端面为上述的支撑面。
  3. 根据权利要求1所述的齿轮箱动力输出结构，其特征在于，安装槽（3a）的底壁为上述的支撑面。
  4. 根据权利要求2所述的齿轮箱动力输出结构，其特征在于，垫片（9）上贯穿设有正对凸柱（4a）的导孔（9a），凸柱（4a）前端插在导孔（9a）内，凸柱（4a）呈圆柱状，导孔（9a）孔壁为与凸柱（4a）匹配的圆周面，凸柱（4a）侧壁和导孔（9a）孔壁贴靠。
  5. 根据权利要求2或3或4所述的齿轮箱动力输出结构，其特征在于，垫片（9）外侧壁和安装槽（3a）侧壁为相互匹配的圆周面并贴在一起。
  6. 根据权利要求1所述的齿轮箱动力输出结构，其特征在于，主轴（3）在安装槽（3a）的外侧一体成型有一圈沿主轴（3）周向分布的凸条（3b），且凸条（3b）长度沿主轴（3）轴向延伸。
  7. 根据权利要求6所述的齿轮箱动力输出结构，其特征在于，副轴（4）通过滚动轴承（6）与箱体（1）转动连接，滚动轴承（6）包括与副轴（4）固连的滚动内圈（6a）和与箱体（1）固连的滚动外圈（6b），滚动内圈（6a）的前端面同时紧压在凸条（3b）和主轴（3）上。
  8. 根据权利要求2或3或4所述的齿轮箱动力输出结构，其特征在于，垫片（9）通过焊接方式与主轴（3）固连。
  9. 根据权利要求2或3或4所述的齿轮箱动力输出结构，其特征在于，垫片（9）与主轴（3）紧密配合固连。
  10. 根据权利要求1所述的齿轮箱动力输出结构，其特征在于，单向内圈（7a）的内侧壁上轴向贯穿有键槽，凸柱（4a）侧壁上固定有与键槽匹配的键块（8），且键块（8）卡接在键槽内。
PCT/CN2021/097609 2021-05-28 2021-06-01 齿轮箱动力输出结构 WO2022246879A1 (zh)

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