阅读说明：本技术 一种空心基材专用螺栓 (Special bolt for hollow base material ) 是由 罗木 于 2020-04-11 设计创作，主要内容包括：一种空心基材专用螺栓,包括：螺杆,螺帽,防退垫片,销钉,细绳,活动挡块,阻停片。所述螺杆一端装配有与其大小规格配合的螺帽和防退垫片,所述螺杆另一端沿螺杆中心轴线开有一纵向缺口,缺口最深处一端设置有阻停片,所述活动挡块放置于所述螺杆缺口中,经过所述螺杆的轴心线且同时垂直于活动挡块和缺口两侧壁贯穿一销钉,所述销钉两端与螺杆表面齐平并固定,活动挡块能够以销钉为轴转动。活动挡块以销钉为界的两部分的长度都分别大于螺杆的半径且重量不等,所述活动挡块两端分别连接有细绳,在重力或者手拉细绳作用下,活动挡块转动,其两端伸出螺杆表面或者收拢。(A hollow substrate specialized bolt comprising: the screw rod, the nut, prevent moving back the gasket, the pin, the string, the activity dog, hinder and stop the piece. Screw rod one end is equipped with rather than big or small specification complex nut and prevents moving back the gasket, the screw rod other end is opened along the screw rod the central axis has a vertical breach, and the deepest department one end of breach is provided with hinders and stops the piece, the activity dog place in the screw rod breach, process the axial lead of screw rod and perpendicular to activity dog and breach both sides wall run through a pin simultaneously, the pin both ends flush and are fixed with the screw rod surface, and the activity dog can use the pin to rotate as the axle. The length of two parts of the movable check block using the pin as a boundary is respectively greater than the radius of the screw rod, the weight of the two parts is unequal, the two ends of the movable check block are respectively connected with a string, under the action of gravity or pulling the string by hand, the movable check block rotates, and the two ends of the movable check block extend out of the surface of the screw rod or are folded in.)

1. A hollow substrate specialized bolt comprising: screw rod (1), nut (2), prevent moving back gasket (3), pin (4), string (5), activity dog (6), stop piece (7), its characterized in that: one end of the screw rod (1) is provided with a nut (2) matched with the screw rod in size and specification and a back-proof gasket (3), the other end of the screw rod (1) is provided with a longitudinal notch along the central axis of the screw rod, one end point in the deepest part of the notch is provided with a stop sheet (7), a movable stop block (6) with proper size is placed in the notch, a pin (4) penetrates through the longitudinal axis of the screw rod (1) and is perpendicular to the movable stop block (6) and two side walls of the notch, the lengths of two parts of the movable stop block (6) at the two ends of the pin are larger than the radius of the screw rod and have different weights, the two ends of the movable stop block (6) are respectively connected with a thin rope, the movable stop block can rotate by taking the pin as the axis to pull the thin rope, the movable stop block (6) rotates, the two ends exceed the surface of the screw rod or are folded, and the inner wall of a mounting hole is respectively clamped when the two ends extend out at an actual mounting site, and then the outer nut (2) is screwed, the bolt is tightly connected with the base material, and the two ends of the movable check block (6) can also extend out of the surface of the screw rod (1) or be folded in under the action of gravity by adjusting the angle of the screw rod (1).

2. The special bolt for hollow base material according to claim 1, wherein: one end of the screw rod (1) is provided with a longitudinal notch along the central axis of the screw rod, the depth of the notch is slightly larger than the diameter of the screw rod (1), and one of the four endpoints at the deepest part of the notch is provided with a stopping sheet (7).

3. The special bolt for hollow base material according to claim 1, wherein: the movable stopper (6) is placed in the notch, the distance from the deepest part of the notch is greater than the position of the radius of the screw, a pin (4) penetrates through the axial lead of the screw (1) and the two side walls of the notch, the two ends of the pin (4) are flush and fixed with the surface of the screw (1), and the movable stopper (6) can rotate by taking the pin (4) as an axis.

4. The special bolt for hollow base material according to claim 1, wherein: the length of the movable stop block (6) at the two ends of the pin is respectively greater than the radius of the screw.

5. The special bolt for hollow base material according to claim 1, wherein: the weights of the two ends of the movable check block (6) are unequal, the angle of the screw rod (1) is adjusted, the movable check block (6) rotates under the action of gravity, and the two ends of the movable check block extend out of the surface of the screw rod or are folded.

6. The special bolt for hollow base material according to claim 1, wherein: the two ends of the movable check block (6) are respectively connected with the thin rope (5), the thin rope (5) is pulled, the movable check block (6) rotates, and the two ends of the movable check block extend out of the surface of the screw rod or are folded in.

Technical Field

The invention belongs to the technical field of fasteners, and particularly relates to a bolt special for a hollow base material.

Background

The requirements of fasteners on various construction sites are very many, various fasteners are needed, hollow base materials are met, the types of the fasteners which can be convenient and practical are very few, only shear type expansion bolts and blind rivets with complex structures are selected, particularly when the thin-wall hollow tube base materials are met, the expansion heads of the shear type bolts are too complex and thick, large mounting holes need to be formed in the base materials, the shear type expansion bolts are not suitable for use, the fastening force of the blind rivets is limited, the blind rivets are inconvenient to withdraw, and the requirements cannot be met.

Disclosure of Invention

The invention aims to: aiming at the problems, the simple and practical bolt special for the hollow base material is provided.

The technical scheme of the invention is realized as follows: a hollow substrate specialized bolt comprising: the screw rod, the nut, prevent moving back the gasket, the pin, the string, the activity dog, hinder and stop the piece.

The upper end of the screw rod is provided with a screw cap matched with the screw rod in size and specification and an anti-backing gasket.

The lower end of the screw is provided with a longitudinal notch along the central axis of the screw, the depth of the notch is slightly larger than the diameter of the screw, one of four endpoints at the deepest part of the notch is provided with a stop sheet, and when the movable stop block is completely folded in the notch of the screw, the stop sheet cannot rotate continuously under the stop of the stop sheet.

The movable check block is placed in the screw rod breach, at the distance apart from the deepest position of breach, be greater than the radial position of screw rod, process the axial lead of screw rod and perpendicular to movable check block and breach both sides wall run through a pin, the pin both ends flush and are fixed with the screw rod surface, and the thickness of pin is moderate, intensity is enough, and movable check block can use the pin to rotate as the axle.

The length of the movable stop block at the upper end and the lower end of the pin is respectively larger than the radius of the screw, so that when the movable stop block rotates to be vertical to the axis of the screw, the part extending out of the surface of the screw is long enough, and the inner wall of the base material hole can be firmly clamped.

The weight of the upper end and the lower end of the movable stop block is unequal, the weight can be realized through unequal length or other methods, the downward trend of the heavy end is kept, the angle of the screw rod is adjusted, the movable stop block rotates under the action of gravity, and the two ends of the movable stop block can extend out of the surface of the screw rod or can be folded.

The two ends of the movable check block are respectively connected with a string which is long enough and convenient to install, the connecting position is suitable for pulling the movable check block to rotate, the string is pulled, the movable check block rotates, and the two ends of the movable check block extend out of the surface of the screw or are folded in.

The invention has the beneficial effects that: the bolt solves the problem of inconvenient fastening of the hollow thin-wall base material, is very convenient for the installation of hollow walls and the like, and has the advantages of simple structure, convenient manufacture, low cost and easy installation.