CN202251237U - 液压油缸活塞防松装置 - Google Patents

液压油缸活塞防松装置 Download PDF

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Publication number
CN202251237U
CN202251237U CN201120355192XU CN201120355192U CN202251237U CN 202251237 U CN202251237 U CN 202251237U CN 201120355192X U CN201120355192X U CN 201120355192XU CN 201120355192 U CN201120355192 U CN 201120355192U CN 202251237 U CN202251237 U CN 202251237U
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piston
loose
oil cylinder
blocking key
hydraulic oil
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Inventor
吕荣智
李刚晖
段建辉
穆元好
黄先楚
张顺
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Hunan Dahan Hoisting Technology Co., Ltd.
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CHANGDE DAHAN SPECIAL AUTOMOBILE Co Ltd
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Abstract

液压油缸活塞防松装置,包括活塞、活塞杆、双向密封圈、卡键、轴用弹性挡圈,活塞与活塞杆通过螺纹连接,活塞上套有双向密封圈,卡键卡在活塞杆的卡键槽中,卡键上装有轴用弹性挡圈。本实用新型通过卡键卡在活塞杆的卡键槽中,使得活塞不能轴向移动和旋转,增加了活塞防松的可靠度,而且卡键厚度比同直径的螺母厚度小,这样就节省了活塞与液压缸底的空间,在油缸的安装尺寸有限的情况下,活塞防松效果仍然很可靠。

Description

液压油缸活塞防松装置
技术领域
本实用新型涉及一种液压油缸活塞的固定装置,具体是液压油缸活塞防松装置。
背景技术
目前,活塞固定防松装置普遍用于液压油缸等装置中,油缸的活塞在反复的运动过程中,可能出现活塞松动,使活塞的密封性降低,减少密封圈和油缸的寿命,所以一般采用双螺母防松。但是这样就加大了活塞与缸底的空间,同样行程下的油缸安装尺寸增加,在油缸的安装尺寸有限的情况下,双螺母活塞防松就捉禁见肘了。
实用新型内容
针对上述现有技术存在的不足,本实用新型的目的是提供一种既能减小油缸的安装尺寸又使活塞防松更为可靠的液压油缸活塞防松装置。
本实用新型的技术方案:液压油缸活塞防松装置,包括活塞、活塞杆、双向密封圈、卡键、轴用弹性挡圈,其特征在于:活塞与活塞杆通过螺纹连接,活塞上套有双向密封圈,卡键卡在活塞杆的卡键槽中,卡键上装有轴用弹性挡圈。
所述卡键由左卡键、右卡键组成。
本实用新型的优点是:本实用新型通过卡键卡在活塞杆的卡键槽中,使得活塞不能轴向移动和旋转,增加了活塞防松的可靠度,而且卡键厚度比同直径的螺母厚度小,这样就节省了活塞与液压缸底的空间,在油缸的安装尺寸有限的情况下,活塞防松效果仍然很可靠。
附图说明
图1为本实用新型的结构示意图。
图2为本实用新型所述卡键的结构示意图。
具体实施方式
现结合附图,对本实用新型进一步描述。
如图1、图2所示,活塞1与活塞杆2通过螺纹连接,活塞1上套有双向密封圈3,卡键4卡在活塞杆2的卡键槽中,卡键4上装有轴用弹性挡圈5,卡键4由左卡键4.1、右卡键4.2组成,轴用弹性挡圈5使左卡键4.1、右卡键4.2合并于活塞杆2的卡键槽中,这样就缩短了活塞1与缸底6的尺寸,同时也固定了活塞1的轴向移动和旋动。

Claims (2)

1.液压油缸活塞防松装置,包括活塞(1)、活塞杆(2)、双向密封圈(3)、卡键(4)、轴用弹性挡圈(5),其特征在于:活塞(1)与活塞杆(2)通过螺纹连接,活塞(1)上套有双向密封圈(3),卡键(4)卡在活塞杆(2)的卡键槽中,卡键(4)上装有轴用弹性挡圈(5)。
2.根据权利要求1所述的所述液压油缸活塞防松装置,其特征在于:卡键(4)由左卡键(4.1)、右卡键(4.2)组成。
CN201120355192XU 2011-09-21 2011-09-21 液压油缸活塞防松装置 Expired - Fee Related CN202251237U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225635A (zh) * 2013-03-29 2013-07-31 国家电网公司 一种双向双作用油缸
CN105179364A (zh) * 2015-09-21 2015-12-23 济南大学 一种防止活塞径向旋转、轴向移动的组合式连接装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225635A (zh) * 2013-03-29 2013-07-31 国家电网公司 一种双向双作用油缸
CN103225635B (zh) * 2013-03-29 2016-08-31 国家电网公司 一种双向双作用油缸
CN105179364A (zh) * 2015-09-21 2015-12-23 济南大学 一种防止活塞径向旋转、轴向移动的组合式连接装置

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