CN209430573U - A kind of crank arm type unilateral bolt fastener - Google Patents
A kind of crank arm type unilateral bolt fastener Download PDFInfo
- Publication number
- CN209430573U CN209430573U CN201821974162.5U CN201821974162U CN209430573U CN 209430573 U CN209430573 U CN 209430573U CN 201821974162 U CN201821974162 U CN 201821974162U CN 209430573 U CN209430573 U CN 209430573U
- Authority
- CN
- China
- Prior art keywords
- nut
- sleeve
- bolt fastener
- crank arm
- bolt
- 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.)
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Abstract
Four groups of protruding blocks for being respectively separated 90 ° are equipped with, the utility model discloses a kind of crank arm type unilateral bolt fastener, at the nut of driving screw for connecting the side for the system of cranking arm；Two sides are respectively equipped with rotation fixing axle in each groove, to connect the other side for system of cranking arm, so that the bolt fastener be made to become an entirety.When installation, using nut one end as positive direction, it is implanted into the hole for being connected workpiece, by to nut side propelling sleeve, so that system overlapping of cranking arm tightens primary nut to form the overhanging arm for being greater than and being connected workpiece hole diameter with fixes sleeve, then big nut is tightened to fix workpiece, 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 crank arm type unilateral bolt fasteners, belong to civil construction project and connect with Automatic manual transmission
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.
Utility model content
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 crank arm type bolt fastener for the unilateral installation of component, and also
Can be as needed, it is easy to disassemble, it is reusable.
The technical solution of proposed adoption: a kind of crank arm type unilateral bolt fastener includes the high-strength main spiral shell that one end is equipped with nut
Bar covers in the external sleeve of the intermediate bar of high-strength driving screw, system of cranking arm, is mounted on screw free end to the small of fixes sleeve
Nut (inside having screw thread matched with screw rod), be mounted on the outside of the non-free end of sleeve to the big nut of fixed workpiece (inside have with
Matched screw thread outside sleeve).
In the utility model, set at the nut of high-strength driving screw there are four 90 ° of protruding block is respectively separated, for connecting song
The side of arm system；Sleeve ends close to nut side are equipped with four grooves equal with overall width of cranking arm, thickness, so that
After work piece, cranking arm to be completely disposed in groove carries out detent；Two sides are respectively equipped with raised rotation in each groove
Fixing axle, to connect the other side for system of cranking arm, so that the bolt fastener be made to become an entirety.In a pre-installation, fastener
In original state, that is, system of cranking arm is in the open state, using nut one end as positive direction, is implanted into the hole for being connected workpiece,
Etc. to be installed.In fastener installation, by so that system of cranking arm overlaps, being greater than to be formed to nut side propelling sleeve
It is connected the overhanging arm of workpiece hole diameter, primary nut is tightened with fixes sleeve, tightens big nut then to fix workpiece, thus
Realize the unilateral fastening of component.
In the preferred embodiment of the utility model, the protruding block on the high-strength driving screw is column dignity rather than cambered surface, from
And can guarantee after fastening, three-dimensional surface can be bonded with sleeve section, reduce the high stress because of small bore generation to component
Generate damage.
In the preferred embodiment of the utility model, the arm end of long-armed, the double galianconism of the list is cambered surface rather than column is honorable, thus
Ensure that will not generate obstruction to rotation because of the seamed edge in corner when cranking arm and rotating.
In the preferred embodiment of the utility model, screw rod passes through bushing core, and after the reinforcing that crank arm, cranking arm after overlapping is embedding
In in groove, complete plane is formed with sleeve section, and then offset with nut medial surface, form apparent globality.
The utility model has the beneficial effects that
The utility model only needs to install bolt in workpiece side, realizes the one-side operation of bolt；
After overlapping of cranking arm in the utility model, face of cranking arm forms biggish contact surface with workpiece, under load action not
It is easy to be pulled out, therefore good fastening effect, while also avoiding generating larger small bore stress, workpiece is damaged；
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；
The enough depth of workpiece hole are connected when the utility model is used, the unilateral bolt fastener is inserted into, to protect
Card cranks arm and can generate enough spaces when being worked, and then the fixed high-strength driving screw of a hand, another hand are pushed ahead
Sleeve is until nut is arrived on top, and then fastening stove bolt is with fixes sleeve, and then fastening king-bolt has been fixed and has been connected workpiece.
When disassembly is desired, come loose big nut, and then unclamps primary nut, opposite direction pull sleeve, until whole can take from hole
Out.Compared with prior art, it can be realized unilateral implementation terminal operation, can also be as needed, it is easy to disassemble, it is repeatable to make
With.
The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.
Detailed description of the invention
Fig. 1 is the utility model structure three-dimensional entity schematic diagram；
Fig. 2 is the utility model structure unfolded state schematic diagram；
Fig. 3 a is high-strength driving screw and system entity figure of cranking arm in the utility model structure；Fig. 3 b is high-strength driving screw and song
Sectional view of the arm system in working condition；
Fig. 4 a is the utility model middle sleeve sterogram；Fig. 4 b is the sectional view of the fluted side of sleeve；
Fig. 5 is simulation bolt effect picture in place；
Fig. 6 is effect picture, i.e. using renderings after installation fastening nut.
In figure: 1 is high-strength driving screw；1a is nut；2 be sleeve；3 be primary nut；4 be big nut；5 be system of cranking arm；
5a is single long-armed；5b is double galianconism；5c is pin rod 1；5d is pin rod 2；5e is protruding block；5g is rotation fixing axle；6 be workpiece；7
For closed work piece.
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.
Please refer to Fig. 1-6, in the present embodiment, a kind of structure setting of crank arm type unilateral bolt fastener are as follows: high-strength main spiral shell
Bar (1), cover the external sleeve (2) of the intermediate bar of the high-strength driving screw (1), to fixes sleeve primary nut (3), to
The big nut (4) and system of cranking arm (5) of fixed workpiece, the system of cranking arm (5) include single long-armed (5a), double galianconism (5b), pin
Bar 1(5c), pin rod 2(5d), the protruding block (5e) that is placed in nut side, the groove (5f) for being placed in sleeve side, be placed in groove
The rotation fixing axle (5g) of two sides.
It is equipped with four groups of protruding blocks for being respectively separated 90 ° at the nut of the high-strength driving screw, is connected to the one of the system of cranking arm
Side；Sleeve ends close to nut side are equipped with four grooves equal with overall width of cranking arm, thickness, so that carrying out in workpiece
After fastening work, cranking arm to be completely disposed in groove carries out detent, and globality is presented in appearance；Each groove two
Side is respectively equipped with protrusion rotation fixing axle, to connect the other side for system of cranking arm, to keep the bolt fastener whole as one
Body.
In a pre-installation, guarantee that being connected workpiece has been provided with the hole that diameter is greater than diameter fastener, fastener is in initial shape
State, that is, system of cranking arm are in the open state；Using nut one end as positive direction, it is parallel to hole and is implanted into the hole for being connected workpiece
It is interior, wait it is to be installed, wherein it should be noted that implantation hole when to guarantee there are enough depth in not operation area side, to guarantee song
Arm can generate enough spaces when being worked.Then the fixed high-strength driving screw of a hand, another hand push ahead sleeve
Until nut is arrived on top, stove bolt is fastened then with fixes sleeve, and then fasten big nut with fixed connected workpiece, can finally make
Whole fastening is carried out with matching nut spanner, reaches the fastening strength of requirement, to realize the unilateral fastening of component.
When disassembly is desired, first big nut is tentatively loosened with spanner, and then the big nut that comes loose, is then loosened
Primary nut is to screw rod tail end, opposite direction pull sleeve, until attempting to take out entirety from hole.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of crank arm type unilateral bolt fastener, it is characterised in that: be equipped with high-strength driving screw (1), the set of nut including one end
The external sleeve (2) of the intermediate bar of the high-strength driving screw (1), to the primary nut (3) of fixes sleeve, to fixed workpiece
Big nut (4) and system of cranking arm (5), the system of cranking arm (5) include single long-armed (5a), double galianconism (5b), pin rod 1 (5c),
Pin rod 2 (5d), the protruding block (5e) for being placed in nut side, the groove (5f) for being placed in sleeve side, the rotation for being placed in two sides in groove
Turn fixing axle (5g).
2. a kind of crank arm type unilateral bolt fastener according to claim 1, it is characterised in that: the high-strength driving screw
(1) protruding block (5e) on is column dignity rather than cambered surface.
3. a kind of crank arm type unilateral bolt fastener according to claim 1, it is characterised in that: the list long-armed (5a),
The arm end of double galianconism (5b) is cambered surface rather than column is honorable.
4. a kind of crank arm type unilateral bolt fastener according to claim 1, it is characterised in that: the nearly spiral shell of the sleeve (2)
The groove (5f) of the cap side (1a) setting can carry out detent with cranking arm after overlapping.
5. a kind of crank arm type unilateral bolt fastener according to claim 1, it is characterised in that: the high-strength driving screw
(1) screw thread is provided with outside nearly free end side to tighten primary nut (3) and come fixes sleeve (2), the nearly free end side of sleeve (2)
Outside is equipped with screw thread and fastens workpiece (6) and closed work piece (7) to tighten big nut (4).
6. a kind of crank arm type unilateral bolt fastener according to claim 1, it is characterised in that: the fastener is working
When state, system of cranking arm (5) is bonded with the complete detent of card slot, is bonded completely on the inside of the non-free end of sleeve and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821974162.5U CN209430573U (en) | 2018-11-28 | 2018-11-28 | A kind of crank arm type unilateral bolt fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821974162.5U CN209430573U (en) | 2018-11-28 | 2018-11-28 | A kind of crank arm type unilateral bolt fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209430573U true CN209430573U (en) | 2019-09-24 |
Family
ID=67968874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821974162.5U Expired - Fee Related CN209430573U (en) | 2018-11-28 | 2018-11-28 | A kind of crank arm type unilateral bolt fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209430573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720407A (en) * | 2020-06-29 | 2020-09-29 | 海盐特邦科技股份有限公司 | Fastener of convenient installation |
-
2018
- 2018-11-28 CN CN201821974162.5U patent/CN209430573U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720407A (en) * | 2020-06-29 | 2020-09-29 | 海盐特邦科技股份有限公司 | Fastener of convenient installation |
| CN111720407B (en) * | 2020-06-29 | 2021-12-03 | 海盐特邦科技股份有限公司 | Fastener of convenient installation |
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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: 20201128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |