CN211525286U - Connecting structure - Google Patents

Abstract

The utility model discloses a hexagon socket head self-locking type one-way high-strength bolt connecting pair and a connecting structure, wherein the connecting pair comprises a metal washer and a screw rod, one end of the screw rod is provided with a hexagon socket head nut, and the end of the screw rod, which is provided with the hexagon socket head nut, is a screwing end; the screw rod is sleeved with a conical head, the tip of the conical head faces to the screwing end of the screw rod, and the inner surface of the conical head is provided with threads; the metal washer is positioned between the conical head and the inner hexagon nut; and be equipped with the metal sleeve between conical head and metal packing ring, be close to conical head one end and seted up at least three and have certain length and crack, every crack sets up along the sleeve axial and all crack evenly distributed along the sleeve circumference, and every crack runs through the inside and outside surface of sleeve, is convenient for the conical head to the end extrusion sleeve that twists that slides of twisting of applying in the twisting process for the sleeve outwards expands along four cracks. The utility model discloses can effectively solve the technological problem that seals cross-section type connecting piece and other connecting pieces are connected, and adopt this to connect vice installation easy operation, connect reliably.

Description

Connecting structure

Technical Field

The utility model belongs to the technical field of building engineering, concretely relates to interior hexagonal head is from vice and connection structure of one-way high-strength bolted connection of locking-type.

Background

At present, in steel structure engineering, for example, in some facilities with high requirements on safety, such as railways, bridges, boiler steel structures, industrial plants, high-rise civil buildings, tower mast structures, hoisting machinery, etc., bolt connection pairs are high-strength bolt connection pairs. The high-strength bolt connecting pair is divided into a torsional shear type high-strength bolt connecting pair and a large hexagonal high-strength bolt connecting pair, but the large hexagonal high-strength bolt connecting pair is generally adopted for connection, and has the advantages of convenient operation, high connection strength, no need of hot working and the like, but the high-strength large hexagonal head bolt needs to be screwed on two sides and has certain requirements on screwing space, however, when two connecting pieces are connected, the high-strength large hexagonal head bolt is adopted for difficult connection or impossible connection when the screwing space is limited or one of the connecting pieces is a closed space, for example, the high-strength large hexagonal head bolt is adopted for difficult connection or impossible connection, when a steel column such as 300 x 300mm, 200 x 200mm and the like needs to be connected with other connecting pieces, the screwing cannot be carried out in the steel column, the existing solution is to firstly weld the steel plate on the steel column, then the steel plate and other connecting pieces are provided with operation holes, the operation process is complicated.

Therefore, how to solve the problem that the two connecting pieces cannot be connected by double-sided screwing due to the screwing space is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The aforesaid that exists to prior art is not enough, the utility model aims at providing a hexagon socket head is from locking-type one-way bolted connection of excelling in is vice and connection structure, and this bolted connection of excelling in can effectively solve two connecting pieces and connect the time-out because of executing to twist the unable two-sided wrong technological problem of executing of space reason, executes to twist at the single face and just can realize the connection of two connecting pieces, and adopts this bolted connection of excelling in pair to install easy operation, connect reliably.

The technical scheme of the utility model is realized like this:

a hexagon socket head self-locking type unidirectional high-strength bolt connecting pair comprises a metal washer and a screw, wherein a hexagon socket head nut is arranged at one end of the screw, and the end, provided with the hexagon socket head nut, of the screw is a screwing end; the screw rod is sleeved with a conical head, the tip end of the conical head faces to the screwing end of the screw rod, and the inner surface of the conical head is provided with threads which are in threaded connection with the screw rod; the metal gasket is sleeved on the screw and positioned between the conical head and the hexagon socket head nut; and be equipped with the metal sleeve between conical head and metal packing ring, the sleeve cover is established on the screw rod and telescopic external diameter equals with the conical head maximum external diameter, has the clearance that lets conical head point insert simultaneously between sleeve and the screw rod, the sleeve is close to conical head one end and has been seted up three at least and has certain length and crack, and every cracks along sleeve axial setting and all crack along sleeve circumference evenly distributed, and every cracks the inside and outside surface that runs through the sleeve, is convenient for in the process of executing to twist, and the conical head is to executing to twist the end slip extrusion sleeve for the sleeve is opened a book along all cracks and is turned over outwards.

Further, a rubber gasket is sleeved on the screw rod between the sleeve and the metal gasket.

Furthermore, the distance from one end of the sleeve, which is far away from the conical head, to the slit is greater than or equal to the sum of the thicknesses of the two pieces to be connected.

Further, there are four slits.

The utility model provides a connection structure, includes first connecting piece and second connecting piece, still includes preceding a hexagon socket head is from locking-type one-way bolted connection of excelling in is vice, first connecting piece and second connecting piece all are equipped with the connecting hole, the aperture of connecting hole is greater than telescopic external diameter, and the hexagon socket head is from locking-type one-way bolted connection of excelling in vice conical head one end passes the connecting hole of second connecting piece and first connecting piece in proper order to make the conical head be located first connecting piece side, metal washer and hexagon socket head nut are located the second connecting piece side, so that in applying the wrong process to the hexagon head nut, the conical head is to applying the end of twisting and sliding extrusion sleeve, makes the sleeve open seam along all and turn over to the book between the part to turn over first connecting piece and second connecting piece fixed connection at metal washer and sleeve.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model is suitable for a when two connecting pieces are connected because of executing the situation of twisting the unable two-sided wrong connection of executing of wrong space reason, only need the single face to execute to twist the installation that can accomplish two connecting pieces to only need bore the preformed hole during the installation, reduce the welding process, simplified the operation, and adopt interior hexagonal head from locking-type one-way high-strength bolt connects vice, can reach high-strength bolt's corresponding grade requirement, according to the connecting piece design of difference simultaneously, choose for use the interior hexagonal head that corresponds the specification from locking-type one-way high-strength bolt connects vice install can.

Drawings

Fig. 1-the structure of the present invention is schematically illustrated.

Fig. 2-schematic view of screw structure with hexagon nut.

Fig. 3-the right side view of fig. 2.

Fig. 4-sleeve structure schematic view.

Fig. 5-installation initial state structure diagram.

Fig. 6-schematic view of the structure after installation.

Wherein: 1-a screw; 11-hexagon socket head nut; 2-conical head; 3-a sleeve; 31-slotting; 4-a rubber gasket; 5-a metal gasket; 6-a first connector; 7-second connecting member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-4, the hexagon socket head self-locking type unidirectional high-strength bolt connection pair comprises a metal washer 5 and a screw 1, wherein a hexagon socket head nut 11 is arranged at one end of the screw 1, and the end, provided with the hexagon socket head nut 11, of the screw 1 is a screwing end; the screw rod 1 is sleeved with a conical head 2, the tip of the conical head 2 faces to the screwing end of the screw rod 1, and the inner surface of the conical head 2 is provided with threads which are in threaded connection with the screw rod 1; the metal washer 5 is sleeved on the screw rod 1 and is positioned between the conical head 2 and the hexagon socket head nut 11; and be equipped with metal sleeve 3 between conical head 2 and metal washer 5, sleeve 3 cover is established on screw rod 1 and sleeve 3's external diameter equals with conical head 2 maximum external diameter, has between sleeve 3 and the screw rod 1 simultaneously and lets conical head 2 most advanced male clearance, sleeve 3 is close to conical head one end and has been seted up three at least and have certain length and crack 31, and every crack 31 sets up and all crack 31 along 3 circumference evenly distributed of sleeve along the sleeve, and every crack 31 runs through the internal and external surface of sleeve 3, is convenient for exert and twist the in-process, and conical head 2 is to exerting the end slip extrusion sleeve 3 of twisting for sleeve 3 is rolled over along all cracks 31 and is turned over outward.

The screw and the hexagon socket head nut form a standard screw with a hexagon socket nut, 8.8-grade or 10.9-grade steel is adopted, and meanwhile, the strength grade of the hexagon socket head self-locking type unidirectional high-strength bolt connecting pair is 8.8-grade or 10.9-grade.

In specific implementation, a rubber gasket 4 is sleeved on the screw rod 1 between the sleeve 3 and the metal gasket 5.

The rubber gasket is arranged, so that the uneven stress caused by the contact friction of the metal gasket and the sleeve can be effectively avoided, and the metal gasket and the sleeve can be prevented from being in direct contact, so that the metal gasket and the sleeve are prevented from being abraded when being screwed. The outer diameter of the rubber gasket in this embodiment is equal to the outer diameter of the sleeve, and in fact it is possible that the outer diameter of the rubber gasket may be larger than the outer diameter of the sleeve.

In specific implementation, the distance from one end of the sleeve 3 far away from the conical head to the slit is greater than or equal to the sum of the thicknesses of the two pieces to be connected, namely the length of the sleeve 3 without the slit is greater than or equal to the sum of the thicknesses of the two pieces to be connected.

When the length of the sleeve 3 which is not slit is larger than the thickness of the connecting plate, a backing plate is sleeved on the sleeve between the metal washer and the connecting piece adjacent to the metal washer, which is not slit, so that the sleeve is complemented for the surplus length of the slit, for example, when the length of the sleeve which is not slit is 40 mm, the sum of the thicknesses of two to-be-connected pieces is 32 mm, and the backing plate with the thickness of 8 mm is selected. And selecting a sleeve with corresponding specification, a screw rod, an inner hexagon nut, a metal washer and a rubber washer which are matched according to the design requirements of different connecting pieces. When in factory processing, the hexagon socket head self-locking type one-way high-strength bolt connecting pair with a plurality of specifications can be processed to meet different use requirements.

In specific implementation, there are four slits 31.

Therefore, the slotting operation on the sleeve is convenient.

Referring to fig. 5 and 6, a connecting structure comprises a first connecting piece 6 and a second connecting piece 7, and further comprises the hexagon socket head self-locking type unidirectional high-strength bolt connecting pair, wherein the first connecting piece 6 and the second connecting piece 7 are both provided with connecting holes, the hole diameter of each connecting hole is larger than the outer diameter of a sleeve, one end of the hexagon socket head self-locking type unidirectional high-strength bolt connecting pair sequentially penetrates through the connecting holes of the second connecting piece and the first connecting piece, the cone head is located on the first connecting piece side, and the metal washer and the hexagon socket nut are located on the second connecting piece side, so that in the process of screwing the hexagon nut, the cone head slides and extrudes the sleeve to the screwing end, the sleeve is outwards folded along a slot, and the first connecting piece and the second connecting piece are firmly fixed between the metal washer and the sleeve folding part.

Use hexagon socket head from one-way high strength bolted connection of locking-type vice two treat connecting piece (first connecting 6 and second connecting piece 7) to install, wherein first connecting piece 6 is closed shaped steel post, its mounting method is:

1. drilling reserved connecting holes on the first connecting piece 6 and the second connecting piece 7, wherein the connecting hole diameter is larger than the diameter of the sleeve and the maximum outer diameter of the conical head by 2-4 mm, so that the sleeve can be conveniently inserted into the two reserved connecting holes, and selecting an inner hexagonal head self-locking type one-way high-strength bolt connecting pair with proper diameter, length, strength grade and installation torque according to design requirements;

2. and inserting the bolt connecting pair into reserved connecting holes of the first connecting piece 6 and the second connecting piece 7, wherein the slotted parts of the conical head and the sleeve are positioned inside the first connecting piece 6 (inside the closed section steel column), and the hexagon socket head nut and the metal washer of the screw are positioned outside the second connecting piece 7. And rotating the conical head, preliminarily screwing the screw rod, the conical head, the sleeve, the rubber gasket, the metal gasket and the hexagon socket head nut, and inserting the tip of the conical head into the gap of the sleeve. And at the screwing end, construction is carried out by using a professional tool (such as an installation drill) matched with the hexagon socket nut, in the screwing process, the metal gasket is tightly attached to the second connecting piece to generate friction force, the sleeve and the screw rod cannot move relatively, and meanwhile, the conical head has pretightening force for the sleeve, so that the conical head can slide towards the screwing end gradually in the screwing process, the sleeve is further extruded, and the sleeve is outwards folded along four slots, so that the self-locking unidirectional high-strength bolt connecting pair of the hexagon socket head can achieve target installation torque after being installed. Then, the screwing is finished, the connecting piece between the sleeve turnover and the metal gasket is squeezed tightly, and the connecting effect of the connecting piece reaches the engineering requirement through the axial force of the screw rod;

3. after the installation is finished, the inspection is carried out according to the requirements of 'steel structure construction quality acceptance criteria', the installation torque with errors is supplemented and twisted, and the stable bolt prestress effect is established.

Finally, it should be noted that the above-mentioned embodiments of the present invention are only examples for illustrating the present invention, and are not limitations to the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.

Claims (3)

1. A connecting structure comprises a first connecting piece and a second connecting piece, and is characterized by further comprising a hexagon socket head self-locking type unidirectional high-strength bolt connecting pair, wherein the hexagon socket head self-locking type unidirectional high-strength bolt connecting pair comprises a metal washer and a screw rod, a hexagon socket head nut is arranged at one end of the screw rod, and a screwing end is arranged at one end of the screw rod, which is provided with the hexagon socket head nut; the screw rod is sleeved with a conical head, the tip end of the conical head faces to the screwing end of the screw rod, and the inner surface of the conical head is provided with threads which are in threaded connection with the screw rod; the metal gasket is sleeved on the screw and positioned between the conical head and the hexagon socket head nut; a metal sleeve is arranged between the conical head and the metal washer, the sleeve is sleeved on the screw, the outer diameter of the sleeve is equal to the maximum outer diameter of the conical head, a gap for inserting the tip of the conical head is formed between the sleeve and the screw, at least three slits with a certain length are formed in one end, close to the conical head, of the sleeve, each slit is arranged along the axial direction of the sleeve, all the slits are uniformly distributed along the circumference of the sleeve, and each slit penetrates through the inner surface and the outer surface of the sleeve; the first connecting piece and the second connecting piece are both provided with connecting holes, the hole diameter of each connecting hole is larger than the outer diameter of the sleeve, one end of the inner hexagonal head self-locking type one-way high-strength bolt connecting auxiliary conical head sequentially penetrates through the connecting holes of the second connecting piece and the first connecting piece, the conical head is located on the side of the first connecting piece, the metal gasket and the inner hexagonal head nut are located on the side of the second connecting piece, the base plate is arranged between the metal gasket and the second connecting piece, the sum of the thicknesses of the first connecting piece, the second connecting piece and the base plate is equal to the length of the sleeve which is not slotted, in the process of screwing the inner hexagonal head nut, the conical head slides and extrudes the sleeve to the screwing end, the sleeve is enabled to be outwards folded along all the slots, and the first connecting piece.

2. A connecting structure as claimed in claim 1, wherein a rubber washer is fitted over the screw between the sleeve and the metal washer.

3. A coupling according to claim 1, wherein said slits are four in number.

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