CN2382881Y - 内涨式膨胀螺栓 - Google Patents

内涨式膨胀螺栓 Download PDF

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Publication number
CN2382881Y
CN2382881Y CN 99223660 CN99223660U CN2382881Y CN 2382881 Y CN2382881 Y CN 2382881Y CN 99223660 CN99223660 CN 99223660 CN 99223660 U CN99223660 U CN 99223660U CN 2382881 Y CN2382881 Y CN 2382881Y
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bolt
screw bolt
hollow
pin
drilled hole
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杨向伟
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Abstract

本实用新型公开了一种内涨式膨胀螺栓,由螺栓和销钉组成,在中空的螺栓后端攻有螺纹可与螺母配合连接,螺栓的前端面设有十字花开口,其开口到螺栓的1/3处,外侧制成粗糙表面,销钉插在中空的螺栓中。螺栓采用一体结构,不用套管,降低了生产成本,内涨式原理不要求钻孔太大,螺栓能放入即可,并且在拧螺母时,螺栓螺纹不向外移动,保证了工程质量。

Description

内涨式膨胀螺栓
本实用新型涉及一种膨胀螺栓,确切地说是公开了一种内涨式膨胀螺栓,属于机械零件技术领域。
目前,现有的膨胀螺栓结构是外涨式,其上配有膨胀套,不足之处是在使用时栽放螺栓的钻孔要大于螺栓的直径,膨胀后的螺栓螺纹长度不宜掌握,经常影响施工质量,因其上还配有膨胀套,使螺栓制造成本增加。
本实用新型公开一种内涨式膨胀螺栓,目的旨在解决现有膨胀螺栓钻孔孔径过大、螺纹长度不宜掌握、生产成本高的缺点。
为达到本实用新型的目的,具体解决方案如下:由螺栓和销钉组成本实用新型,在中空的螺栓后端攻有螺纹可与螺母配合连接,螺栓的前端面设有十字花开口,其开口到螺栓的1/3处,外侧制成粗糙表面,销钉插在中空的螺栓中。使用时只需钻与螺栓直径相同的孔,把螺栓放入孔中,将销钉钉进螺栓的空腔中,使其前端十字花涨开,靠其外侧的粗糙表面与钻孔内壁摩擦即可紧固住螺栓。
本实用新型的积极效果在于:螺栓采用一体结构,不用套管,降低了生产成本,内涨式原理不要求钻孔太大,螺栓能放入即可,并且在拧螺母时,螺栓螺纹不向外移动,保证了工程质量,
图1为本实用新型结构原理图。
下面结合附图进一步说明本实用新型:在图1中,刚体的螺栓1为中空结构,顶端设有前端面3,其上并设有十字花开口6一直到螺栓1的1/3处左右,销钉2的直径与螺栓1的中空孔径相对应,插在其中,螺栓1的前端外侧还辊压有粗糙花纹4,螺栓1的后半部设有螺纹5,可与螺母配合连接。

Claims (1)

1、一种内涨式膨胀螺栓,其特征在于:由螺栓(1)和销钉(2)组成本实用新型,在中空的螺栓(1)后端攻有螺纹(5)可与螺母配合连接,螺栓(1)的前端面(3)设有十字花开口(6),其开口到螺栓(1)的1/3处,外侧制成粗糙表面(4),销钉(2)插在中空的螺栓(1)中。
CN 99223660 1999-04-28 1999-04-28 内涨式膨胀螺栓 Expired - Fee Related CN2382881Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99223660 CN2382881Y (zh) 1999-04-28 1999-04-28 内涨式膨胀螺栓

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99223660 CN2382881Y (zh) 1999-04-28 1999-04-28 内涨式膨胀螺栓

Publications (1)

Publication Number Publication Date
CN2382881Y true CN2382881Y (zh) 2000-06-14

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CN 99223660 Expired - Fee Related CN2382881Y (zh) 1999-04-28 1999-04-28 内涨式膨胀螺栓

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CN (1) CN2382881Y (zh)

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