CN206159225U - Rotatory fastening bolt of unilateral - Google Patents
Rotatory fastening bolt of unilateral Download PDFInfo
- Publication number
- CN206159225U CN206159225U CN201621186560.1U CN201621186560U CN206159225U CN 206159225 U CN206159225 U CN 206159225U CN 201621186560 U CN201621186560 U CN 201621186560U CN 206159225 U CN206159225 U CN 206159225U
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- China
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- diameter
- sleeve pipe
- nut
- screw rod
- described sleeve
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a rotatory fastening bolt of unilateral, including the screw rod, the screw rod rear end be the nut, and during the sleeve pipe was inserted to the front portion of screw rod, the front end of screw rod was equipped with taper nut, and the sheathed tube rear end is equipped with the shoulder, and the sheathed tube front portion vertically is equipped with a plurality of slots, and taper nut's tip moves towards the sheathed tube front end. The surface of the tapering point of nut is equipped with the recess. The sheathed tube internal diameter is greater than the diameter of screw rod, taper nut's tip diameter is less than the sheathed tube internal diameter, taper nut's main aspects diameter is greater than the sheathed tube internal diameter. The side of shoulder is equipped with the centre gripping platform. Sheathed tube external diameter and taper nut's main aspects external diameter is less than the diameter in workpiece setting hole, and the external diameter of sheathed tube shoulder is greater than the diameter in workpiece setting hole. When implementing the installation, only needing use tools to screw up nut and shoulder, can accomplishing the fastening effect, it is comparatively easy to operate, and the kit is simple.
Description
Technical field
The utility model is related in a kind of workpiece for engineering carry out the fastening bolt of unilateral installation, more particularly to a kind of single
Side rotates fastening bolt.
Background technology
With the standardization, the batch production of component and fitting production, the assembling of construction and mechanization, the society of product supply that design
The industrialization assembly construction technology that the seriation of change and market comsupton is characterized is traditional construction industrial realization industrial transformation and liter
The inexorable trend of level, its outstanding advantage is that speed of application is fast, the construction period is short, labour demand is little, pollution environment is few.Therefore,
Prefabricated assembled steel structure system best embodies and plays the Core Superiority of prefabrication system, most development potentiality and
Promotional value.And bolt connection be conducive to accelerate speed of application, the reduction of erection time, it is easy to control construction quality, by external environment because
Element affects little, simple to operate, without the need for special technique workman, labour cost is saved, so as to increase economic efficiency.
Monolateral bolt can realize that function is tightened in unilateral installation, one side, thus not need additional processing installing hole, can be not
On the premise of other positions of destruction steel pipe, bolt connection is completed, the problem produced by plain bolt can be evaded, welding can be made again
Amount reduce as far as possible, so as to save construction volume and labour cost, with site operation it is simple and convenient, welding capacity is minimum the characteristics of.Together
When, under certain condition its mechanical property can accomplish to be compared favourably with traditional high-strength bolt, be highly suitable for steel (pipe) structure
Connection.
Common bolt includes screw rod and nut two parts, generally requires in side insertion screw rod and binding nut, then
Nut is tightened in opposite side instrument.Operating personnel is needed simultaneously in the operation of component both sides, but in underground engineering, city's political and ideological work
The limited operability such as journey, Fang Jian space, is difficult to install using common bolt；As underground engineering tunneling engineering method adopts steel ripple
Pipe replaces a just grid, and corrugated steel pipe is assembled along facial contour is excavated, along ring superposition assembly, can only unilateral (bellows inner side) enter
Row bolt is installed.
Utility model content
The purpose of this utility model is to provide a kind of unilateral rotational fastener bolt simple to operate, easy construction.
The purpose of this utility model is achieved through the following technical solutions：
Unilateral rotational fastener bolt of the present utility model, including screw rod, the spiro rod rear end is nut, before the screw rod
Portion is inserted in sleeve pipe, and the front end of the screw rod is provided with tapered cup nut, and the rear end of described sleeve pipe is provided with shoulder, the front portion of described sleeve pipe
Longitudinal direction is provided with multiple slits, the front end of the small end of the tapered cup nut towards described sleeve pipe.
The technical scheme provided by above-mentioned the utility model is as can be seen that the one side that the utility model embodiment is provided rotates
Fastening bolt, when implementing to install, it is only necessary to tightened to nut and shoulder using instrument, you can complete fastening effect, operation is more
Easily, and kit is simple.
Description of the drawings
The three-dimensional structure front view of the unilateral rotational fastener bolt that Fig. 1 a are provided for the utility model embodiment；
The three-dimensional structure schematic rear view of the unilateral rotational fastener bolt that Fig. 1 b are provided for the utility model embodiment；
Fig. 2 is the utility model embodiment work use state schematic diagram；
Fig. 3 a～3c is the utility model embodiment Steel Structure Installation schematic diagram；
Fig. 3 d～3f is the utility model embodiment corrugated steel pipe structure scheme of installation.
In figure：
1st, screw rod, 2, shoulder, 3, sleeve pipe, 4, tapered cup nut, 5, slit.
Specific embodiment
The utility model embodiment will be described in further detail below.
Unilateral rotational fastener bolt of the present utility model, its preferably specific embodiment is：
Including screw rod, the spiro rod rear end is nut, and the front portion of the screw rod is inserted in sleeve pipe, the front end of the screw rod
Tapered cup nut is provided with, the rear end of described sleeve pipe is provided with shoulder, and the front portion longitudinal direction of described sleeve pipe is provided with multiple slits, the tapered cup nut
Small end towards described sleeve pipe front end.
The surface of the tapering point of the nut is provided with groove.
The front portion longitudinal direction of described sleeve pipe is provided with 4 slits.
, more than the diameter of the screw rod, the end diameter of the tapered cup nut is less than described sleeve pipe for the internal diameter of described sleeve pipe
Internal diameter, the outside diameter of the tapered cup nut is more than the internal diameter of described sleeve pipe.
The side of described shoulder is provided with Gripping platform.
The big end external diameter of the external diameter of described sleeve pipe and the tapered cup nut is less than the diameter of workpiece installing hole, described sleeve pipe
Diameter of the external diameter of shoulder more than workpiece installing hole.
Unilateral fastening bolt of the present utility model, can overcome the shortcomings of existing bolt can not monolateral fastening, improve bolt
Fastening effect.
The principle of the unilateral fastening of the utility model is：
By reversing bolt head, the tapered cup nut on the inside of workpiece is made to the precession of sleeve pipe direction, so as to gradually strut with narrow
Each point of limb of sleeve pipe of groove, using friction self-locking is formed between workpiece, sleeve pipe limbs and nut cone, finally abuts each point of limb of sleeve pipe
Install on hole wall on the outside of workpiece.
Compared with the prior art, the utility model has the beneficial effect that：
The utility model is only needed in side installation bolt, realizes the unilateral operation of bolt；
The utility model middle sleeve point limb strut it is closely connected with tapered cup nut be engaged, be not easy to be pulled out under load action,
Good fastening effect；
When the utility model is implemented to install, it is only necessary to nut and shoulder are tightened using instrument, you can complete fastening effect
Really, operation is relatively easy to, and kit is simple.
The utility model meets steel (bellows) Structural Design Requirement, can be advantageously applied to steel structure node connection.
Specific embodiment：
As shown in Fig. 1 a to Fig. 3 f, the bolt in the present embodiment is by portions such as screw rod, expansion tube (sleeve pipe with shoulder) and nuts
Part is constituted, nut for coniform, the minimum diameter of circular cone not less than expansion bore, when sleeve pipe 3 is tightened, screw rod 1 to
Outer movement, by the axial movement of screw thread the part of tapered cup nut 4 is moved, and then in the outer peripheral face and taper spiral shell of expansion tube limbs
Female to form very big normal pressure, in addition the angle of circular cone is less, so that friction is formed between workpiece, expansion limbs and circular cone certainly
Lock, and then reach fixation.
Fixed installation process：
Bolt and the side of tapered cup nut 4 are sent into into workpiece installing hole to contact with steel workpiece up to shoulder 2, accurate contraposition；
Open-end wrench gripping sleeve shoulder is adopted on the inside of workpiece (shoulder 2 is machined with Gripping platform, namely otch section)；
Torque wrench is fixed on the nut of screw rod 1, stubborn nut is applied, until it reaches suggestion torque value, or fastening is difficult to hold
Till continuous, installation.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any those familiar with the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by the protection domain of claims.
Claims (6)
1. a kind of unilateral rotational fastener bolt, it is characterised in that including screw rod, the spiro rod rear end is nut, the screw rod
Front portion is inserted in sleeve pipe, and the front end of the screw rod is provided with tapered cup nut, and the rear end of described sleeve pipe is provided with shoulder, before described sleeve pipe
Portion is longitudinally provided with multiple slits, the front end of the small end of the tapered cup nut towards described sleeve pipe.
2. unilateral rotational fastener bolt according to claim 1, it is characterised in that the surface of the tapering point of the nut sets
It is fluted.
3. unilateral rotational fastener bolt according to claim 2, it is characterised in that the front portion longitudinal direction of described sleeve pipe is provided with 4
Individual slit.
4. unilateral rotational fastener bolt according to claim 3, it is characterised in that the internal diameter of described sleeve pipe is more than the spiral shell
The diameter of bar, the end diameter of the tapered cup nut is less than the internal diameter of described sleeve pipe, and the outside diameter of the tapered cup nut is more than
The internal diameter of described sleeve pipe.
5. the unilateral rotational fastener bolt according to any one of Claims 1-4, it is characterised in that the side of described shoulder
It is provided with Gripping platform.
6. the unilateral rotational fastener bolt according to any one of Claims 1-4, it is characterised in that the external diameter of described sleeve pipe
The diameter of workpiece installing hole is less than with the big end external diameter of the tapered cup nut, the external diameter of the shoulder of described sleeve pipe is more than workpiece installing hole
Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186560.1U CN206159225U (en) | 2016-11-04 | 2016-11-04 | Rotatory fastening bolt of unilateral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186560.1U CN206159225U (en) | 2016-11-04 | 2016-11-04 | Rotatory fastening bolt of unilateral |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206159225U true CN206159225U (en) | 2017-05-10 |
Family
ID=58656180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621186560.1U Active CN206159225U (en) | 2016-11-04 | 2016-11-04 | Rotatory fastening bolt of unilateral |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206159225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571510A (en) * | 2018-06-28 | 2018-09-25 | 同济大学 | A kind of convertible unilateral bolt fastener |
-
2016
- 2016-11-04 CN CN201621186560.1U patent/CN206159225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571510A (en) * | 2018-06-28 | 2018-09-25 | 同济大学 | A kind of convertible unilateral bolt fastener |
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| GR01 | Patent grant |