WO2014000409A1 - 曲轴输出机构 - Google Patents

曲轴输出机构 Download PDF

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Publication number
WO2014000409A1
WO2014000409A1 PCT/CN2013/000649 CN2013000649W WO2014000409A1 WO 2014000409 A1 WO2014000409 A1 WO 2014000409A1 CN 2013000649 W CN2013000649 W CN 2013000649W WO 2014000409 A1 WO2014000409 A1 WO 2014000409A1
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WO
WIPO (PCT)
Prior art keywords
crankshaft
pulley
flywheel
end gear
gear
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PCT/CN2013/000649
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English (en)
French (fr)
Inventor
肖亨琳
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无锡开普动力有限公司
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Application filed by 无锡开普动力有限公司 filed Critical 无锡开普动力有限公司
Publication of WO2014000409A1 publication Critical patent/WO2014000409A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/076—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges

Definitions

  • the invention relates to a crankshaft output mechanism of an engine, and belongs to the technical field of engine transmission. Background technique
  • crankshaft output mechanism of most engines is that the flywheel and the pulley are fixed to the crankshaft by keys and bolts, and the crankshaft drives the pulley, the flywheel and the damper to operate.
  • a plurality of slots and a plurality of holes are opened on the crankshaft, and the damper is mostly directly connected to the crankshaft, and the pulley has no damping measures, so that the crankshaft is long and heavy, and the output end accuracy is too low. The strength is not good.
  • the object of the present invention is to overcome the deficiencies in the prior art and to provide a crankshaft output mechanism that is simple in structure, compact, easy to install, high in accuracy, and stable.
  • a crankshaft output mechanism includes a crankshaft, a crankshaft front end gear, a pulley, a damper, a flywheel, and a crankshaft rear end gear; and the front end and the rear end of the crankshaft are both tapered ends
  • the mounting holes of the pulley and the flywheel are set to be tapered holes, and the taper of the inner surface of the pulley and the flywheel mounting hole is consistent with the taper of the front and rear outer surfaces of the crankshaft, and the front and rear ends of the crankshaft and the pulley and the flywheel are subjected to high pressure taper.
  • the damper is positioned by the inner diameter stop and fixed to the pulley by the locking bolt; the front end gear of the crankshaft is installed at the front end of the crankshaft and located inside the pulley, and the first front end of the crankshaft gear and the crankshaft pass the first short
  • the positioning pin is connected, the front end gear of the crankshaft is connected with the pulley through a first long positioning pin; the rear end gear of the crankshaft is installed at the rear end of the crankshaft and is located inside the flywheel, and the rear end gear of the crankshaft is connected with the crankshaft through a second short positioning pin.
  • the rear end gear of the crankshaft and the flywheel are connected by a second long positioning pin.
  • the inner wall of the mounting hole of the pulley and the flywheel is provided with a ring-shaped high-pressure oil groove, and the pulley and the flywheel are provided with a pressing oil hole communicating with the annular high-pressure oil groove.
  • the oil port of the pressure oil hole on the pulley and the flywheel is sealed with a dustproof plug.
  • the front end of the crankshaft and the rear end face are provided with a threaded center hole, and the front end and the rear end surface of the crankshaft are respectively connected to the front end baffle and the rear end baffle by a baffle bolt, and the front end baffle is limited a belt pulley, the rear end flap limits the flywheel.
  • the front crankshaft gear, the rear crankshaft gear and the crankshaft are each an interference fit connection.
  • the invention has the advantages that: the crankshaft output mechanism of the invention has the advantages of simple and compact structure and convenient installation, and the roller cone, the flywheel and the crankshaft are connected by the taper taper, the connection is firm, the reliability is good, the output precision is High and stable; the damper is mounted on the pulley to form a component, which makes the pulley drive work stable and the whole mechanism can work more smoothly.
  • FIG. 1 is a schematic structural view of an embodiment of the present invention.
  • the crankshaft output mechanism in the embodiment is mainly composed of a crankshaft 1, a first short positioning pin 2, a crankshaft front end gear 3, a first long positioning pin 4, a pulley 5, a damper 6, a locking bolt 7, and a front end.
  • the baffle 8, the baffle bolt 9, the dustproof plug 10, the flywheel 13, the rear end baffle 14, the second long locating pin 15, the crank rear end gear 16 and the second short locating pin 17 are composed of components.
  • the connecting manner between the pulley 5 and the crankshaft 1 is as shown in FIG. 1.
  • the front end of the crankshaft 1 is a tapered end
  • the mounting hole of the pulley 5 is a tapered hole
  • the taper of the inner surface of the mounting hole of the pulley 5 is provided.
  • the front end of the crankshaft 1 and the pulley 5 are connected by a high-pressure taper.
  • the connection in this way ensures that the connection between the pulley 5 and the crankshaft 1 is firm and reliable, and the taper fitting precision is high, which ensures the accuracy and stability of the output of the pulley 5.
  • An annular high-pressure oil groove 12 is disposed on the inner wall of the mounting hole of the pulley 5, and the pulley 5 is provided with a pressing oil hole 11 communicating with the annular high-pressure oil groove 12. If the pulley 5 is to be disassembled after being installed in place, the hydraulic oil must be driven into the annular high-pressure oil tank 12 from the pressing oil hole 11 by the hydraulic press, and the pulley 5 is pressed out by the hydraulic expansion force; in addition, the pressing oil hole 11 on the pulley 5 is pressed.
  • the oil port is sealed with a dustproof plug 10 to prevent foreign matter such as dust from entering the pressure oil hole 11.
  • a threaded center hole is formed on an end surface of the front end of the crankshaft 1.
  • the front end of the front end of the crankshaft 1 is connected to the front end baffle 8 by a baffle bolt 9, and the front end baffle 8 limits the pulley 5 to ensure safety when the pulley 5 is removed. effect.
  • the connection between the flywheel 13 and the crankshaft 1 and the connection between the pulley 5 and the crankshaft 1 are the same, and a high-pressure taper interference connection between the flywheel 13 and the crankshaft 1 is used to ensure reliable transmission.
  • the flywheel 13 is detached from the crankshaft 1 by utilizing hydraulic expansion force; the rear end of the crankshaft 1 uses the rear end flap 14 to limit the flywheel 13, thereby ensuring the safety of disassembly.
  • the damper 6 is positioned by an inner diameter stop and is locked and fixed to the pulley 5 by a locking bolt 7. Since the damper 6 is not directly connected to the crankshaft 1 or the extension line of the entire crankshaft output mechanism, the crankshaft 1 drives the pulley 5 to drive the damper 6, for the crankshaft 1 and the flywheel 13 While damping the vibration, it also plays a key role in the transmission stability of the pulley 5; in addition, the connection of the damper 6 to the pulley 5 also reduces the complexity of the structure of the crankshaft 1, controls the effective length of the crankshaft 1, and improves The strength of the crankshaft output mechanism.
  • crankshaft front end gear 3 is mounted on the front end of the crankshaft 1 and located inside the pulley 5, and the crankshaft front end gear 3 and the crankshaft 1 are connected by an interference fit, and the crankshaft front end gear 3 and the crankshaft 1 pass through the first
  • the short positioning pin 2 is connected, and the crankshaft front end gear 3 and the pulley 5 are connected by a first long positioning pin 4
  • the crank rear end gear 16 is mounted at the rear end of the crankshaft 1 and inside the flywheel 13, the crankshaft rear end gear 16 and the crankshaft 1 is an interference fit connection, the crankshaft rear end gear 16 and the crankshaft 1 are connected by a second short positioning pin 17, and the crankshaft rear end gear 16 and the flywheel 13 are connected by a second long positioning pin 15.

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

Abstract

本发明涉及曲轴输出机构，包括曲轴、皮带轮、飞轮、减振器、曲轴前端齿轮和曲轴后端齿轮；其特征在于：所述曲轴的前、后端均设为锥形端，所述皮带轮、飞轮的安装孔设为锥形孔，曲轴前、后端与皮带轮、飞轮为高压锥度过盈连接；所述减振器通过内径止口定位，通过锁紧螺栓锁紧固定在皮带轮上；所述曲轴前端齿轮安装在曲轴前端并位于皮带轮内侧，曲轴前端齿轮与曲轴之间通过第一短定位销连接，曲轴前端齿轮与皮带轮之间通过第一长定位销连接；所述曲轴后端齿轮安装在曲轴后端并位于飞轮内侧，曲轴后端齿轮与曲轴之间通过第二短定位销连接，曲轴后端齿轮与飞轮之间通过第二长定位销连接。本发明结构简单、紧凑，安装方便，精度高且稳定。

Description

说 明 书 曲轴输出机构
技术领域
本发明涉及一种发动机的曲轴输出机构， 属于发动机传动技术领域。 背景技术
大多数发动机的曲轴输出机构是飞轮和皮带轮通过键及螺栓固定在曲轴 上， 由曲轴带动皮带轮、 飞轮和减振器运转。 传统的安装方式中， 曲轴上要 开多个槽和开多个孔， 另外减振器大多是直接连接在曲轴上， 皮带轮无减振 措施， 使得曲轴偏长、 偏重， 输出端精度过低， 强度不好。
发明内容
本发明的目的在于克服现有技术中存在的不足， 提供一种结构简单、 紧 凑， 安装方便， 精度高且稳定的曲轴输出机构。
按照本发明提供的技术方案： 曲轴输出机构， 包括曲轴、 曲轴前端齿轮、 皮带轮、 减振器、 飞轮和曲轴后端齿轮； 其特征在于： 所述曲轴的前、 后端 均设为锥形端， 所述皮带轮、 飞轮的安装孔设为锥形孔， 并且皮带轮、 飞轮 安装孔内表面的锥度与曲轴前、 后端外表面的锥度一致， 曲轴前、 后端与皮 带轮、 飞轮为高压锥度过盈连接； 所述减振器通过内径止口定位， 通过锁紧 螺栓锁紧固定在皮带轮上； 所述曲轴前端齿轮安装在曲轴前端并位于皮带轮 内侧， 曲轴前端齿轮与曲轴之间通过第一短定位销连接， 曲轴前端齿轮与皮 带轮之间通过第一长定位销连接； 所述曲轴后端齿轮安装在曲轴后端并位于 飞轮内侧， 曲轴后端齿轮与曲轴之间通过第二短定位销连接， 曲轴后端齿轮 与飞轮之间通过第二长定位销连接。
作为本发明的进一步改进， 所述皮带轮、 飞轮的安装孔内壁上均设有环 形高压油槽， 所述皮带轮、 飞轮上均设有与环形高压油槽连通的打压油孔。
作为本发明的进一步改进， 所述皮带轮、 飞轮上的打压油孔的油口用防 尘堵密封。
作为本发明的进一步改进，所述曲轴前、后端的端面上开有螺紋中心孔， 曲轴前、 后端的端面上分别通过挡板螺栓连接前端挡板、 后端挡板， 所述前 端挡板限位皮带轮， 所述后端挡板限位飞轮。
作为本发明的进一步改进， 所述前端曲轴齿轮、 后端曲轴齿轮与曲轴之 间均为过盈配合连接。 本发明与现有技术相比， 优点在于： 本发明的曲轴输出机构结构简单、 紧凑， 安装方便， 皮带轮、 飞轮与曲轴之间靠髙压锥度过盈连接， 连接牢固， 可靠性好， 输出精度高且稳定； 减振器安装在皮带轮上形成组件， 使得皮带 轮传动工作稳定， 整个机构能够更加平稳工作。
附图说明
图 1为本发明实施例的结构示意图。
具体实施方式
下面结合具体附图和实施例对本发明作进一步说明。
如图所示： 实施例中的曲轴输出机构主要由曲轴 1、第一短定位销 2、 曲 轴前端齿轮 3、 第一长定位销 4、 皮带轮 5、 减振器 6、 锁紧螺栓 7、 前端挡 板 8、 挡板螺栓 9、 防尘堵 10、 飞轮 13、 后端挡板 14、 第二长定位销 15曲 轴后端齿轮 16和第二短定位销 17等零部件组成。
所述皮带轮 5与曲轴 1之间的连接方式如图 1所示， 所述曲轴 1前端设 为锥形端， 所述皮带轮 5的安装孔设为锥形孔， 皮带轮 5安装孔内表面的锥 度与曲轴 1前端外表面的锥度一致， 曲轴 1前端与皮带轮 5为高压锥度过盈 连接。 此种方式的连接， 可以确保皮带轮 5与曲轴 1之间连接牢固、 可靠， 锥度配合精度高， 保证了皮带轮 5输出的精度和稳定性。
所述皮带轮 5的安装孔内壁上设有环形高压油槽 12，所述皮带轮 5上设 有与环形高压油槽 12连通的打压油孔 11。 皮带轮 5安装到位后如需拆卸， 须用液压机从打压油孔 11将液压油打入环形高压油槽 12中， 利用液压膨胀 力将皮带轮 5压出； 另外， 所述皮带轮 5上的打压油孔 11的油口用防尘堵 10密封， 以防止灰尘等异物进入打压油孔 11。
所述曲轴 1前端的端面上开有螺纹中心孔， 曲轴 1前端的端面上通过挡 板螺栓 9连接前端挡板 8， 所述前端挡板 8限位皮带轮 5， 在拆卸皮带轮 5 时起安全保障作用。
如图 1所示，所述飞轮 13与曲轴 1之间的连接方式和皮带轮 5与曲轴 1 之间的连接方式相同，飞轮 13与曲轴 1之间采用高压锥度过盈连接，来保证 传递的可靠性；飞轮 13利用利用液压膨胀力从曲轴 1上拆下； 曲轴 1后端利 用后端挡板 14来限位飞轮 13， 保证拆卸的安全性。
如图 1所示， 所述减振器 6通过内径止口定位， 通过锁紧螺栓 7锁紧固 定在皮带轮 5上。 由于减振器 6不是直接连接在曲轴 1上或整个曲轴输出机 构的延长线上， 曲轴 1带动皮带轮 5进而带动减振器 6,对曲轴 1和飞轮 13 起到减振作用的同时， 也对皮带轮 5的传动稳定性其关键作用； 另外， 减振 器 6连接在皮带轮 5上也降低了曲轴 1结构的复杂性， 控制了曲轴 1的有效 长度， 提高了曲轴输出机构的强度。
如图 1所示， 所述曲轴前端齿轮 3安装在曲轴 1前端并位于皮带轮 5内 侧， 曲轴前端齿轮 3与曲轴 1之间为过盈配合连接， 曲轴前端齿轮 3与曲轴 1之间通过第一短定位销 2连接， 曲轴前端齿轮 3与皮带轮 5之间通过第一 长定位销 4连接； 所述曲轴后端齿轮 16安装在曲轴 1后端并位于飞轮 13内 侧， 曲轴后端齿轮 16与曲轴 1之间为过盈配合连接， 曲轴后端齿轮 16与曲 轴 1之间通过第二短定位销 17连接，曲轴后端齿轮 16与飞轮 13之间通过第 二长定位销 15连接。

Claims

权 利 要 求 书
1、 曲轴输出机构， 包括曲轴（1)、 曲轴前端齿轮（3)、 皮带轮（5)、 减 振器 （6)、 飞轮 （13) 和曲轴后端齿轮 （16); 其特征在于： 所述曲轴 （1) 的前、 后端均设为锥形端， 所述皮带轮 （5)、 飞轮 （13) 的安装孔设为锥形 孔， 并且皮带轮（5)、 飞轮（13)安装孔内表面的锥度与曲轴（1)前、 后端 外表面的锥度一致， 曲轴 （1)前、 后端与皮带轮（5)、 飞轮（13)为高压锥 度过盈连接； 所述减振器 （6) 通过内径止口定位， 通过锁紧螺栓 （7) 锁紧 固定在皮带轮（5)上； 所述曲轴前端齿轮（3)安装在曲轴（1)前端并位于 皮带轮（5)内侧， 曲轴前端齿轮（3)与曲轴（1)之间通过第一短定位销（2) 连接， 曲轴前端齿轮 （3) 与皮带轮 （5) 之间通过第一长定位销 （4) 连接; 所述曲轴后端齿轮（16)安装在曲轴（1)后端并位于飞轮（13) 内侧， 曲轴 后端齿轮（16)与曲轴（1)之间通过第二短定位销（17)连接， 曲轴后端齿 轮 （16) 与飞轮 （13) 之间通过第二长定位销 （15) 连接。
2、 如权利要求 1所述的曲轴输出机构， 其特征在于： 所述皮带轮 （5)、 飞轮（13)的安装孔内壁上均设有环形高压油槽（12)， 所述皮带轮（5)、 飞 轮 （13) 上均设有与环形高压油槽 （12) 连通的打压油孔 （11)。
3、 如权利要求 2所述的曲轴输出机构， 其特征在于： 所述皮带轮 （5)、 飞轮 （13) 上的打压油孔 （11) 的油口用防尘堵 （10) 密封。
4、 如权利要求 1所述的曲轴输出机构， 其特征在于： 所述曲轴（1)前、 后端的端面上开有螺纹中心孔， 曲轴（1)前、后端的端面上分别通过挡板螺 栓（9)连接前端挡板（8)、 后端挡板（14)， 所述前端挡板（8) 限位皮带轮
(5)， 所述后端挡板 （14) 限位飞轮 （13)。
5、如权利要求 1所述的曲轴输出机构， 其特征在于： 所述前端曲轴（1) 齿轮、 曲轴后端齿轮 （16) 与曲轴 （1) 之间均为过盈配合连接。
PCT/CN2013/000649 2012-06-27 2013-06-03 曲轴输出机构 WO2014000409A1 (zh)

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CN102734339B (zh) * 2012-06-27 2014-08-06 无锡开普动力有限公司 曲轴输出机构
CN102979872B (zh) * 2012-11-27 2015-08-19 天津雷沃动力有限公司 内燃机曲轴前端输出结构
CN103398086B (zh) * 2013-07-01 2015-12-30 广西玉柴机器股份有限公司 发动机曲轴前端结构
CN104389914A (zh) * 2014-09-05 2015-03-04 朝柴动力科技（北京）有限公司 锥套式曲轴减振组合皮带轮结构
CN104612828A (zh) * 2015-02-12 2015-05-13 广西玉柴机器股份有限公司 发动机的曲轴油压联接件
CN112443628A (zh) * 2020-12-02 2021-03-05 江苏普瑞亚动力科技有限公司 一种可拆卸的紧密连接结构

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