CN201025042Y - 用于液压支架的双伸缩立柱 - Google Patents

用于液压支架的双伸缩立柱 Download PDF

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Publication number
CN201025042Y
CN201025042Y CNU2007200897991U CN200720089799U CN201025042Y CN 201025042 Y CN201025042 Y CN 201025042Y CN U2007200897991 U CNU2007200897991 U CN U2007200897991U CN 200720089799 U CN200720089799 U CN 200720089799U CN 201025042 Y CN201025042 Y CN 201025042Y
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China
Prior art keywords
bottom valve
cylinder
step hole
fixing
plug
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Expired - Lifetime
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CNU2007200897991U
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English (en)
Inventor
高有进
刘富营
倪和平
王维孝
王广新
王晓卓
张国志
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Zhengzhou Coal Mining Machinery Group Co Ltd
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Zhengzhou Coal Mining Machinery Group Co Ltd
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Abstract

本实用新型公开了一种用于液压支架的双伸缩立柱，包括由外缸、中缸和设置在所述中缸内的活柱，以及设置在中缸缸底位置处的底阀所组成的立柱本体；在所述中缸缸底中部开设有带有内螺纹的台阶孔，所述底阀设置在所述台阶孔内，在台阶孔内设置有与台阶孔内螺纹相配合的螺堵和用于固定所述螺堵的弹簧挡圈。本实用新型优点在于通过采用螺堵固定压紧已装在台阶孔内的底阀，再在所述台阶孔装上弹簧挡圈来限制螺堵的退扣松脱，使底阀固定的可靠性及强度比原来传统的弹簧挡圈或卡键固定大大提高，杜绝了因底阀松脱造成立柱窜液现象的发生。

Description

用于液压支架的双伸缩立柱
技术领域
本实用新型涉及液压支架，尤其是涉及用于液压支架的双伸缩立柱。
背景持术：
底阀是液压双伸缩立柱的关键件，通过使用底阀使立柱实现双伸缩功能，底阀的可靠性直接影响立柱工作的整体可靠性。以往通常底阀在中缸缸底的固定连接结构为弹簧挡圈或卡环(键)固定结构；在使用工作时挡圈或卡环(键)易脱掉，造成底阀松脱损坏，进而造成立柱窜液失效。
实用新型内容
本实用新型的目的在于提供一种能够防止底阀松脱的用于液压支架的双伸缩立柱。
为实现上述目的，本实用新型采取下述技术方案：
本实用新型所述的用于液压支架的双伸缩立柱，包括由外缸、中缸和设置在所述中缸内的活柱，以及设置在中缸缸底位置处的底阀所组成的立柱本体；在所述中缸缸底中部开设有带有内螺纹的台阶孔，所述底阀设置在所述台阶孔内，在台阶孔内设置有与台阶孔内螺纹相配合的螺堵和用于固定所述螺堵的弹簧挡圈。
本实用新型优点在于通过采用螺堵固定压紧已装在台阶孔内的底阀，再在所述台阶孔装上弹簧挡圈来限制螺堵的退扣松脱，使底阀固定的可靠性及强度比原来传统的弹簧挡圈或卡键固定大大提高，杜绝了因底阀松脱造成立柱窜液现象的发生。
附图说明
图1是本实用新型的结构示意图
具体实施方式
如图所示，本实用新型所述的用于液压支架的双伸缩立柱，它包括由外缸5、中缸6和设置在所述中缸6内的活柱7，以及设置在中缸缸底1位置处的底阀2所组成的立柱本体；在所述中缸缸底1的中部开设有带有内螺纹的台阶孔，所述底阀2设置在所述台阶孔内，在台阶孔内设置有与台阶孔内螺纹相配合的螺堵3和用于固定所述螺堵3的弹簧挡圈4。

Claims (1)

1.一种用于液压支架的双伸缩立柱，它包括由外缸(5)、中缸(6)和设置在所述中缸(6)内的活柱(7)，以及设置在中缸缸底(1)位置处的底阀(2)所组成的立柱本体；其特征在于：在所述中缸缸底(1)的中部开设有带有内螺纹的台阶孔，所述底阀(2)设置在所述台阶孔内，在台阶孔内设置有与台阶孔内螺纹相配合的螺堵(3)和用于固定所述螺堵(3)的弹簧挡圈(4)。
CNU2007200897991U 2007-03-27 2007-03-27 用于液压支架的双伸缩立柱 Expired - Lifetime CN201025042Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200897991U CN201025042Y (zh) 2007-03-27 2007-03-27 用于液压支架的双伸缩立柱

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200897991U CN201025042Y (zh) 2007-03-27 2007-03-27 用于液压支架的双伸缩立柱

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CN201025042Y true CN201025042Y (zh) 2008-02-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984220A (zh) * 2010-05-28 2011-03-09 金湖小青青机电设备有限公司 双伸缩悬浮液压立柱

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984220A (zh) * 2010-05-28 2011-03-09 金湖小青青机电设备有限公司 双伸缩悬浮液压立柱

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Zhengzhou Coal Machinery Integrated Equipment Co., Ltd.

Assignor: Zhengzhou Coal Mining Machinery Group Co., Ltd.

Contract fulfillment period: 2007.8.20 to 2017.3.27

Contract record no.: 2008410000202

Denomination of utility model: Dual flexing vertical pole for hydraulic pressure supporter

Granted publication date: 20080220

License type: Exclusive license

Record date: 20081216

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.8.20 TO 2017.3.27; CHANGE OF CONTRACT

Name of requester: ZHENG ZHOU COAL MACHINE EQUIPMENT CO., LTD.

Effective date: 20081216

C56 Change in the name or address of the patentee
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Address after: No. 105, Huashan Road, Henan, Zhengzhou Province, China: 450013

Patentee after: Zhengzhou Coal Mining Machinery Group Co., Ltd.

Address before: No. 105, Huashan Road, Henan, Zhengzhou Province, China: 450013

Patentee before: Zhengzhou Coal Mining Machinery Group Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: ZHENGZHOU MINE MACHINE GROUP CO., LTD.

Free format text: FORMER NAME: ZHENGZHOU COAL MINE MACHINERY GROUP CO., LTD.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20080220