CN209430579U - A kind of rotary unilateral bolt fastener of four leaves - Google Patents
A kind of rotary unilateral bolt fastener of four leaves Download PDFInfo
- Publication number
- CN209430579U CN209430579U CN201821834360.1U CN201821834360U CN209430579U CN 209430579 U CN209430579 U CN 209430579U CN 201821834360 U CN201821834360 U CN 201821834360U CN 209430579 U CN209430579 U CN 209430579U
- Authority
- CN
- China
- Prior art keywords
- turnbarrel
- quaterfoil
- bolt
- fastener
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a kind of rotary unilateral bolt fasteners of four leaves, there are four the raised shafts for being respectively separated 90 ° for bolt end, set there are four can vane piece and cooperate screw rod turnbarrel, the raised swivel head that quaterfoil matches can be revolved with screw rod end by being provided on turnbarrel, and swivel head is provided centrally with screw rod preformed hole, screw rod is provided with the screw thread matched with nut and turnbarrel, branch fastener (screw rod end) is arranged in screw rod leading portion, when quaterfoil rotary expansion, circle diameter where it is greater than the outer diameter of turnbarrel and the diameter of bolt end, to form support, when fastener is installed, by turnbarrel the quaterfoil of bolt end is unfolded, to realize the unilateral fastening of component.The utility model only need to carry out the installation of bolt in side, realize the one-side operation of bolt, meet Steel Structural Design requirement in intensity, and structure is simple, cheap, easy to assembly, can be widely applied to the fields such as civil engineering structure, mechanical engineering.
Description
Technical field
The utility model relates to a kind of rotary unilateral bolt fasteners of four leaves, belong to civil engineering work technology and machinery
Assembly connection field.
Background technique
Currently, connecting the installation requirements amount of fastening very for structural member in civil engineering and mechanical connection fastening field
It is huge, it is common to use the plain bolt being made of screw rod and nut, when carrying out terminal operation, need to side be inserted into screw rod simultaneously
Binding nut, then in the other side, with tool, nut is tightened, requires installation personnel simultaneously in the operation of component both sides when installation.But
It is the installation relative to more typical opening section component, for such as closed cross-section member and is inconvenient to touch wherein one side
Component for, this bolt generally used is when in use and inconvenient.In many cases, hand is needed out in the construction process
Hole can further weaken cross-sectional strength, cause bolt strength that theoretical value is not achieved.Common expansion one-way bolt is because being difficult to realize spiral shell
The application of bolt pretightning force, fastening effect are also unable to reach design requirement under larger load.And punching bolt pair in the prior art
The reserved required precision of bolt hole is especially high, and in-site installation difficulty is big, and is difficult to apply at side column and corner post node.It is existing
Unilateral bolt in, be not suitable for large span or big load structure, and need more complex installation tool and cumbersome installation
Step.
For example, in steel-tube construction (square steel tube or round steel pipe), concrete filled steel tube, beam-column connection etc., due to
Column section is mostly closed section, and plain bolt cannot be operated on both sides, can only carry out operation connection installation in unilateral side, therefore
Traditional bolt and nut securing member is unable to satisfy the fastening installation of similar structures.
Summary of the invention
Technical problems to be solved: in view of the deficiencies of the prior art, the utility model, which provides one kind, can overcome existing spiral shell
Bolt cannot unilateral fastening deficiency, improve bolt fastening effect the four leaf rotary expansion formula bolts for the unilateral installation of component it is tight
Firmware.
The technical solution of proposed adoption: one kind rotary unilateral bolt fastener of four leaves includes that one end is equipped with the high-strength of branch fastener
Driving screw, cover the external turnbarrel of the intermediate bar of the high-strength driving screw, connection revolving on the branch fastener is set
Quaterfoil, the primary nut by being threadably mounted at the screw rod other end, by being threadably mounted at, turnbarrel is separate to support first end
Big nut.
In the utility model, there are four the quaterfoil for the raised shaft for being respectively separated 90 ° and cooperation are high-strength for bolt end
The turnbarrel of driving screw, the raised swivel head that quaterfoil matches can be revolved with screw rod end by being provided on turnbarrel, and be revolved
Rotary head is provided centrally with the preformed hole that may pass through high-strength driving screw, and high-strength driving screw is provided with and primary nut and turnbarrel matching
The screw thread of conjunction, screw rod leading portion setting branch fastener (screw rod end).When the non-rotary expansion of quaterfoil can be revolved, where circumference it is straight
Diameter is less than the outer diameter of turnbarrel and the diameter of bolt end, so as to the whole aperture for penetrating connected rod piece.This is tight
When firmware is installed, by the outer turnbarrel of clamping screw, then rotary screw the quaterfoil that revolves of bolt end is unfolded, so
After install and tighten primary nut with fixes sleeve, and then big nut is installed and tightens, with fixed connected rod piece, to realize structure
The unilateral fastening of part.
In the preferred embodiment of the utility model, the external screw thread that is arranged of the turnbarrel close to primary nut one end is used to fasten
It is connected component.
In the preferred embodiment of the utility model, on branch fastener when revolving quaterfoil and being in non-open configuration, four leaves can be revolved
Be contained in overall structure in piece, the raised swivel head on turnbarrel with can revolve quaterfoil and pasted completely in end face where branch fastener
It closes, and turnbarrel is consistent with the outer diameter of branch fastener.
The design feature of the utility model bolt fastener is: screw rod passes through the raised swivel head at turnbarrel center,
The quaterfoil that revolves on branch fastener is entrenched togather with the raised swivel head on turnbarrel, to make that quaterfoil, branch can be revolved
Raised swivel head on fastener, turnbarrel forms entirety, and constitutes mechanism, realizes linkage and fastening with mechanism principle.
The utility model has the advantages that
The utility model only needs to install bolt in side, realizes the one-side operation of bolt；
In the utility model on screw rod leading portion branch fastener revolve quaterfoil expansion after, the contact surface with installation component is
Vertical, it is not easy to be pulled out under load action, good fastening effect；
When the utility model is implemented to install, can first by turnbarrel and screw rod by screw thread the external world be linked to be one it is whole
Body, later period only need to apply appropriate pretightning force on nut using tool, i.e., deployable to revolve quaterfoil and reach fastening effect,
Operation is no different with plain bolt, and supporting tool is simple.After being installed, node high reliablity can effectively improve node carrying
Power；
The utility model fully meet Steel Structural Design requirement, can be very good be applied to steel structure node connection and other
The connection of closed section, especially concrete filled steel tube；
With it is existing using unilateral fastening bolt made of special material compared with, be without the use of special material, not against material
Material deformation forms support, has prevented fatigue of materials and has further deformed bring hidden danger；
Mechanism supports stress is direct, more reliable in use occasion higher applied to intensity requirement；
Compared with the unilateral bolt of other structures principle, principle is simpler, more secure and reliable, unilateral with same structural principle
Bolt is compared, and turnbarrel can shift to an earlier date chimeric in the external world and will not be displaced by screw thread with branch fastener, increases operation
Reliability.
Detailed description of the invention
Fig. 1 is the utility model structure undeployed configuration schematic diagram；
Fig. 2 is the utility model structure unfolded state schematic diagram；
Fig. 3 a is inner screw schematic three dimensional views in the utility model, and Fig. 3 b is the sectional view of Fig. 3 a；
Fig. 4 a is turnbarrel schematic diagram in the utility model；Fig. 4 b is the sectional view of Fig. 4 a；
Fig. 5 is simulation bolt effect picture in place；
Fig. 6 a is that can revolve quaterfoil after simulating fastening primary nut to strut effect picture；Fig. 6 b is the sectional view of Fig. 6 a；
Fig. 7 is effect picture, i.e. using renderings after installation fastening nut.
In figure: 1 is high-strength driving screw；1a is branch fastener；2 be turnbarrel；3 be primary nut；4 be big nut；5 be that can revolve
Quaterfoil；6 be raised swivel head；7 be raised shaft；8 be connected component；9 be connected component.
Specific embodiment
The technical solution of the utility model is clearly and completely described with embodiment with reference to the accompanying drawings of the specification, it is clear that
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.
Fig. 1-7 is please referred to, a kind of structure setting of the rotary unilateral bolt fastener of four leaves in the present embodiment are as follows: high-strength master
1 end of bolt there are four can around the raised shaft 7 for being divided into 90 ° quaterfoil 5 and cooperate the turnbarrel 2 of driving screw,
The raised swivel head 6 that quaterfoil 5 matches can be revolved with screw rod end by being provided on turnbarrel 2, and swivel head 6 is provided centrally with
Driving screw preformed hole, driving screw 1 are provided with the screw thread matched with nut and turnbarrel 2,1 leading portion of driving screw setting branch fastener
1a (screw rod end), when can revolve 5 rotary expansion of quaterfoil, where circle diameter be greater than turnbarrel 2 outer diameter and spiral shell
The diameter of bolt end；When fastener is installed, in a contracted state, after the branch fastener 1a is chimeric with turnbarrel 2, install and first
Primary nut 3 is twisted, the locking at initial stage is carried out using primary nut 3, is then passed completely through installation hole, relatively rotates turnbarrel
2, by the relative rotation of inner screw 1 and turnbarrel 2, on branch fastener 1a revolve quaterfoil 5 expansion, then by primary nut 3 into
Row fastening eventually, the circle diameter where can revolving quaterfoil 5 at this time are greater than the diameter of hole, are formed and supported in support portion, constitute exhibition
Open state.It finally installs and tightens the big nut 4 of 2 screw thread one end of turnbarrel and apply appropriate pretightning force, component can be realized
Unilateral fastening.
Claims (4)
1. a kind of rotary unilateral bolt fastener of four leaves, it is characterised in that: be equipped with the high-strength driving screw of branch fastener including one end
(1), it covers in the external turnbarrel (2) of the intermediate bar of the high-strength driving screw (1), be arranged in the convex of turnbarrel (2) side
Play swivel head (6), connection setting revolving quaterfoil (5), quaterfoil (5) can be revolved for fixing on the branch fastener (1a)
Raised shaft (7) is by being threadably mounted at the primary nut (3), separate by being threadably mounted at turnbarrel of screw rod (1) other end
Support the big nut (4) at first end.
2. a kind of rotary unilateral bolt fastener of four leaves according to claim 1, which is characterized in that the high-strength main spiral shell
The end that primary nut (3) one end is installed on bar (1) should reserve sufficient length, successively to install primary nut (3) and big nut (4).
3. a kind of rotary unilateral bolt fastener of four leaves according to claim 1, which is characterized in that the turnbarrel
(2) screw thread of external overall length setting is used for fastening member.
4. a kind of rotary unilateral bolt fastener of four leaves according to claim 1, which is characterized in that the branch fastener
On (1a) when revolving quaterfoil (5) and being in non-open configuration, quaterfoil (5) can be revolved and be fully accommodated in branch fastener (1a), rotation
Raised swivel head (6) on rotaring sleeve (2) with can revolve quaterfoil (5) and be bonded completely in end face where branch fastener (1a), and revolve
Rotaring sleeve (2) is consistent with the outer diameter of branch fastener (1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821834360.1U CN209430579U (en) | 2018-11-08 | 2018-11-08 | A kind of rotary unilateral bolt fastener of four leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821834360.1U CN209430579U (en) | 2018-11-08 | 2018-11-08 | A kind of rotary unilateral bolt fastener of four leaves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209430579U true CN209430579U (en) | 2019-09-24 |
Family
ID=67967340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821834360.1U Expired - Fee Related CN209430579U (en) | 2018-11-08 | 2018-11-08 | A kind of rotary unilateral bolt fastener of four leaves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209430579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350737A (en) * | 2020-04-02 | 2020-06-30 | 赵秀菊 | Spiral expansion bolt |
-
2018
- 2018-11-08 CN CN201821834360.1U patent/CN209430579U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350737A (en) * | 2020-04-02 | 2020-06-30 | 赵秀菊 | Spiral expansion bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190924 Termination date: 20201108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |