CN210423328U - Unilateral fastening bolt - Google Patents
Unilateral fastening bolt Download PDFInfo
- Publication number
- CN210423328U CN210423328U CN201920676150.2U CN201920676150U CN210423328U CN 210423328 U CN210423328 U CN 210423328U CN 201920676150 U CN201920676150 U CN 201920676150U CN 210423328 U CN210423328 U CN 210423328U
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- Prior art keywords
- sleeve
- conical head
- screw rod
- fastening bolt
- head
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- Expired - Fee Related
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 10
- 230000003313 weakening effect Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 208000004141 microcephaly Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model provides a unilateral fastening bolt, include: the screw rod and the conical head at one end of the screw rod; the conical head and the screw rod are integrated; a sleeve, a fixed washer and a nut are sequentially arranged on the screw rod from the conical head end in a penetrating manner; the sleeve, the fixing washer and the screw are in clearance fit, the outer diameter of the sleeve is larger than the inner diameter of the fixing washer, a plurality of axial openings are formed in the end, close to the conical head, of the sleeve, the small head end of the conical head is clamped into the sleeve, and the outer diameter of the large head end of the conical head is larger than or equal to the inner diameter of the sleeve. The utility model discloses under the prerequisite that does not reduce installation rate and node intensity, avoided traditional approach to connecting section's opening weakening when accomplishing closed cross-section component bolted connection, it has simple to operate swiftly, adapts to closed cross-section component and connects and reduce the demand that is difficult for touching out-of-plane height, guarantees advantages such as connecting section integrality.
Description
Technical Field
The application relates to the technical field of component connection, in particular to a unilateral fastening bolt for connecting two components with one being a closed interface.
Background
In steel structures or composite structures, the connection between steel members generally adopts welding connection, riveting connection and bolt connection. The welding connection is the most main connection method of steel structures, and has the advantages of simple structure, no weakening of construction section, steel saving, convenient processing, easy adoption of automatic operation, good connection tightness and large rigidity; the rivet connection has the advantages of better plasticity and toughness, reliable force transmission, easy quality inspection, suitability for the connection of a structure directly bearing dynamic load, complex structure, more steel consumption and less adoption at present; the bolt connection has been widely used because of its simple construction, good stress performance, detachable, fatigue resistance, and will not loosen under the action of dynamic load.
Conventional bolt fastening typically consists of a nut and a screw. During installation, the nut or the bolt head needs to be clamped on one side, and the bolt head or the nut needs to be screwed by a spanner from the other side. In general, an installer can access both sides of an object to be fastened; however, for special applications, such as closed tubular structures or structures that are not easily accessible at one end, the use of conventional bolts is greatly limited. Therefore, a new requirement is provided for the construction and connection of the closed interface, a bolt capable of well completing the connection of steel members with closed sections is needed, and holes need to be formed in the sections when the conventional bolts in China meet the requirement, so that the members are weakened, and the disadvantages are also shown; secondly, the speed of field installation is improved as much as possible, and the one-way bolt in the prior art does not have the advantage; third, in some cases, it is also necessary to have a smaller out-of-plane height on the side that is not easily accessible after installation, which is not the case with the prior art one-way bolts.
Chinese utility model patent 200710099369.2 discloses a split type bolt fastener, the bolt body comprises three, including two limit body of rod and a middle body of rod, the three can constitute a bolt wholly. When the two side rod bodies and the middle rod body are combined together, the cross section of the formed bolt rod body is circular, and the curved surface is provided with threads, so that the three parts can be fixed by using a common nut when being combined into a whole. The utility model discloses a although can realize the function of one-way fastening, because its part is more, the installation rate is slower.
Chinese utility model patent 201210435247.7 discloses a unilateral fastening bolt, the bolt is divided by the bolt head, retaining washer, sleeve pipe and the awl head four bibliographic categories of screw rod and screw rod one end and is constituteed, and it has the axial opening to open on the sleeve pipe. When the bolt head is screwed, the screw rotates, the conical head does not rotate, but axial rigid body displacement occurs, the sleeve is spread to achieve the effect of fixing the gasket, and finally the component is clamped. Although the utility model can realize the function of unidirectional fastening, the height of the side-out plane is controlled by the screw rod, and the use of the utility model is limited in some cases.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a single-sided fastening bolt for connecting two members, one of which is a closed cross-section, for solving the problems of the prior art.
In order to achieve the above objects and other related objects, the technical solution of the present invention is specifically achieved as follows:
a single-sided fastening bolt, comprising: the screw rod and the conical head at one end of the screw rod; the conical head and the screw rod are integrated;
a sleeve, a fixed washer and a nut are sequentially arranged on the screw rod from the conical head end in a penetrating manner;
the sleeve, the fixing washer and the screw are in clearance fit, the outer diameter of the sleeve is larger than the inner diameter of the fixing washer, a plurality of axial openings are formed in the end, close to the conical head, of the sleeve, the small head end of the conical head is clamped into the sleeve, and the outer diameter of the large head end of the conical head is larger than or equal to the inner diameter of the sleeve.
Furthermore, four axial openings are uniformly formed at the end, close to the conical head, of the sleeve.
Furthermore, the length of the opening is 5 mm-10 mm away from the end part of the sleeve far away from the conical head.
Furthermore, a rubber gasket is arranged on the screw in a penetrating mode and located between the sleeve and the fixing gasket.
Further, the outer circumferential surface of the fixing washer is provided with two planes of symmetry.
Further, the outer surface of the conical head is a conical plane.
Furthermore, the screw rod is not provided with threads at the end far away from the conical head, and the non-threaded section on the screw rod is provided with two symmetrical planes.
As can be seen from the above, in the technical scheme in the utility model, because the utility model discloses an unilateral fastening bolt has foretell structure, consequently after putting into this unilateral fastening bolt hole, constructor can twist into certain degree of depth with the nut earlier, when the hand is twisted motionless, constructor can be when pressing from both sides tight mounting washer, presss from both sides tight nut or screw rod tip, screws up screw rod tip or nut through the wrench tightening spanner, finally props open the sleeve pipe through the conical head to block the bolt hole, accomplish the one-way connection installation of bolt. The utility model discloses under the prerequisite that does not reduce installation rate and node intensity, avoided traditional approach to connecting cross-section's opening weakening when accomplishing closed cross-section component bolted connection, it has simple to operate swiftly, adapts to closed interface component and connects and reduce the demand that is difficult for touching out-of-plane height, guarantees advantages such as connecting interface integrality.
Drawings
Fig. 1 is a schematic structural view of a single-side fastening bolt in an embodiment of the present invention.
Fig. 2 is a schematic view of an effect of the single-side fastening bolt in the embodiment of the present invention.
Fig. 3 is a front view of a bushing in an embodiment of the invention.
Fig. 4 is a side view of a bushing in an embodiment of the invention.
Fig. 5 is a front view of a rubber gasket in an embodiment of the present invention.
Fig. 6 is a front view of a stationary washer in an embodiment of the present invention.
Fig. 7 is a side view of a securement washer in an embodiment of the invention.
In the figure: 1-bolt head, 2-sleeve, 3-rubber washer, 4-fixed washer, 5-nut.
Detailed Description
In order to make the technical solution and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Please refer to fig. 1 to 7. It should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the size should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the efficacy that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial technical changes.
As shown in fig. 1, in order to solve the one-way assembling problem, in a preferred embodiment of the present invention, the single-side fastening bolt includes: a screw and a conical head 1 at one end of the screw; the conical head 1 and the screw rod are integrated;
a sleeve 2, a fixed washer 4 and a nut 5 are sequentially arranged on the screw rod from the conical head end in a penetrating manner;
the sleeve 2, the fixing washer 4 and the screw are in clearance fit, the outer diameter of the sleeve 2 is larger than the inner diameter of the fixing washer 4, a plurality of axial openings are formed in the end, close to the conical head, of the sleeve 2, the small head end of the conical head 1 is clamped into the sleeve 2, and the outer diameter of the large head end of the conical head 1 is larger than or equal to the inner diameter of the sleeve 2.
In a specific operation, as shown in fig. 2, after passing a screw through bolt holes of two members to be connected, a worker can clamp the fixing washer 4 and the screw or the nut by a tool while tightening a screw head or the screw using a torque wrench; because of the microcephaly end card of conical head is in sleeve pipe 2, so when screw rod or nut rotated, the conical head will produce the trend to bolt head end axial displacement, again because of the fixation washer is fixed by the centre gripping, and sheathed tube external diameter is greater than the internal diameter of fixation washer, and the sleeve pipe is backstopd by the fixation washer, so the conical head can progressively screw in sleeve pipe 2 to finally make sleeve pipe 2 prop open along the breach under the conical head effort, thereby block the edge of bolt hole, realize the one-way connection installation of bolt.
As will be described in detail below with reference to the specific operation method, first, the assembly of the components of the unilateral fastening bolt of the present invention is completed in the aforementioned manner, and the sleeve 2, the fixing washer 4 and the nut 5 are sequentially inserted into the screw. In addition, preferably, in an embodiment of the present invention, a rubber washer 3 located between the sleeve 2 and the fixing washer 4 may be further inserted into the screw rod, so as to improve the shock resistance of the single-sided fastening bolt of the present invention, wherein the rubber washer 3 is shown in fig. 5. Bolt holes are reserved in corresponding positions of two components to be connected, wherein one component is a closed section, such as a closed tubular structure like a square steel pipe commonly used in building structures or a structure with one end not easy to touch. The size of the bolt hole should satisfy the condition that the sleeve can pass through, but the fixing washer can be spacing at the bolt hole edge, so the aperture of bolt hole should slightly be greater than the sheathed tube external diameter, and be less than the external diameter of fixing washer.
The utility model discloses an after unilateral fastening bolt's screw rod passed the bolt hole of component one-level closed cross-section's component two, constructor used corresponding instrument (for example spanner, pliers etc.) to fix 4 centre grippings of lock washer, it is fixed with screw rod or nut centre gripping simultaneously with corresponding instrument, recycle torque wrench and exert the moment of torsion at the outside of closed cross-section component to nut or screw rod and screw up, the tip end of conical head will deepen gradually in the cover pipe, the principle has been elucidated in the preceding paragraph, the no longer repeated description in this department. Meanwhile, the outer diameter of the large head end of the conical head is larger than or equal to that of the sleeve, so that the conical head is prevented from being completely sunk into the sleeve. The conical head finally makes the sleeve 2 prop open along the opening and clamp the edge of the bolt hole, thereby ensuring that the bolt cannot be separated, namely completing the connection.
Additionally, be in the technical scheme of the utility model, can set up the open-ended quantity of the nearly awl head end of sleeve pipe in advance according to the needs of the practical application condition. For example, preferably, in an embodiment of the present invention, the sleeve is provided with four axial openings at the proximal conical end.
Similarly, in the technical solution of the present invention, the length of the opening of the sleeve near the cone end can be preset according to the requirement of the practical application. For example, preferably, in an embodiment of the present invention, the length of the opening is 5mm to 10mm from the distal end of the sleeve.
In addition, preferably, in an embodiment of the present invention, the outer peripheral surface of the fixing washer 4 is provided with two symmetrical planes, so that the fixing washer 4 can be better clamped and fixed during specific operations.
Preferably, in an embodiment of the present invention, the outer surface of the conical head is a conical plane.
Preferably, in an embodiment of the present invention, the screw has no thread at the end away from the conical head, and the unthreaded section of the screw has two symmetrical planes.
To sum up, in the technical scheme of the utility model, because the utility model discloses an unilateral fastening bolt has foretell structure, consequently after putting into this unilateral fastening bolt hole, constructor can twist into certain degree of depth with the nut earlier, when the hand is twisted motionless, constructor can press from both sides tight fixation washer in, presss from both sides tight nut or screw rod tip, screws up screw rod tip or nut through wrench tightening spanner, finally struts the sleeve pipe through the conical head to block the bolt hole, accomplish the one-way connection installation of bolt. The utility model discloses under the prerequisite that does not reduce installation rate and node intensity, avoided traditional approach to connecting cross-section's opening weakening when accomplishing closed cross-section component bolted connection, it has simple to operate swiftly, adapts to closed interface component and connects and reduce the demand that is difficult for touching out-of-plane height, guarantees advantages such as connecting interface integrality.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A single-sided fastening bolt, characterized in that it comprises: the screw rod and the conical head at one end of the screw rod; the conical head and the screw rod are integrated;
a sleeve, a fixed washer and a nut are sequentially arranged on the screw rod from the conical head end in a penetrating manner;
the sleeve, the fixing washer and the screw are in clearance fit, the outer diameter of the sleeve is larger than the inner diameter of the fixing washer, a plurality of axial openings are formed in the end, close to the conical head, of the sleeve, the small head end of the conical head is clamped into the sleeve, and the outer diameter of the large head end of the conical head is larger than or equal to the inner diameter of the sleeve.
2. The single-sided fastening bolt according to claim 1, characterized in that:
four axial openings are uniformly formed in the end, close to the conical head, of the sleeve.
3. The single-sided fastening bolt according to claim 1, characterized in that:
the length of the opening is 5 mm-10 mm away from the end part of the sleeve far away from the conical head.
4. The single-sided fastening bolt according to claim 1, characterized in that:
and a rubber gasket is arranged on the screw in a penetrating way and is positioned between the sleeve and the fixed gasket.
5. The single-sided fastening bolt according to claim 1, characterized in that:
the outer peripheral surface of the fixing washer is provided with two symmetrical planes.
6. The single-sided fastening bolt according to claim 1, characterized in that:
the outer surface of the conical head is a conical plane.
7. The single-sided fastening bolt according to claim 1, characterized in that:
the screw rod is not provided with threads at the end far away from the conical head, and the non-thread section on the screw rod is provided with two symmetrical planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920676150.2U CN210423328U (en) | 2019-05-13 | 2019-05-13 | Unilateral fastening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920676150.2U CN210423328U (en) | 2019-05-13 | 2019-05-13 | Unilateral fastening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423328U true CN210423328U (en) | 2020-04-28 |
Family
ID=70371346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920676150.2U Expired - Fee Related CN210423328U (en) | 2019-05-13 | 2019-05-13 | Unilateral fastening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423328U (en) |
-
2019
- 2019-05-13 CN CN201920676150.2U patent/CN210423328U/en not_active Expired - Fee Related
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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: 20200428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |