CN111927870A - Assembly type unilateral bolt assembly - Google Patents

Abstract

The invention provides an assembled unilateral bolt assembly including a screw rod, which is screwed into a conical nut through a cracking sleeve; the unilateral bolt assembly further includes a backing plate, and the backing plate includes a gasket part, and the protruding eccentric, the gasket part has a first hole, and the first hole penetrates the eccentric; the diameter of the eccentric arc is greater than/equal to the diameter of the first steel plate in which the eccentric is embedded The diameter of the second hole, when the unilateral bolt assembly fixes the first steel plate and the second steel plate, the eccentric wheel is embedded in the second hole of the first steel plate, so that the eccentric wheel and the inner wall of the second hole are stuck, Limit the rotation of the backing plate. The eccentric wheel of the invention is stuck with the inner wall of the second hole, so as to ensure that the gasket does not rotate with the bolt during the construction process, reduce the application of auxiliary tools in construction, do not need to fix the end components, avoid complicated construction, and improve the efficiency of construction. construction efficiency.

Description

An assembled unilateral bolt assembly

technical field

The invention relates to the technical field of construction engineering, in particular to an assembled unilateral bolt assembly.

Background technique

The unilateral bolt is a kind of bolt that can realize the functions of unilateral installation and unilateral tightening. The unilateral bolt is constructed on the basis of not destroying the closed steel structure, which makes the construction simple and convenient, and the welding amount is extremely small, which can be very good. Solve the problem of connection between steel members using closed section steel.

In the existing unilateral bolts, one end of the unilateral bolt belt is usually inserted into the cavity of the two steel members to be connected. Steel members.

However, in the prior art, when the unilateral bolts are tightened on the outside, a gasket needs to be installed between the outer steel member and the screw. Usually, the gasket often rotates with the bolts during construction. Auxiliary tools are often required to fix the gasket, which leads to cumbersome construction and low efficiency.

Therefore, in view of the technical problems in the prior art, an assembled unilateral bolt assembly is required to solve the technical problem that the gasket rotates with the bolts and reduce the application of auxiliary tools in construction.

SUMMARY OF THE INVENTION

The object of the present invention is to provide an assembled unilateral bolt assembly, the unilateral bolt assembly includes a screw rod, and the screw rod is screwed into the conical nut through the cracking sleeve;

The unilateral bolt assembly further includes a backing plate, the backing plate includes a gasket portion and a protruding eccentric wheel, the gasket portion is provided with a first hole, and the first hole penetrates the eccentric wheel;

The diameter of the arc of the eccentric is greater than/equal to the diameter of the second hole of the first steel plate in which the eccentric is embedded. When the unilateral bolt assembly fixes the first steel plate and the second steel plate, the eccentric is embedded in into the second hole of the first steel plate, so that the eccentric wheel is stuck with the inner wall of the second hole, and the rotation of the backing plate is restricted.

Preferably, when the diameter of the arc of the eccentric wheel is equal to the diameter of the second hole of the first steel plate in which the eccentric wheel is embedded, the eccentric wheel is embedded in the second hole of the first steel plate, and the arc of the eccentric wheel deviates from the second hole The inner wall of the hole causes the eccentric wheel to be stuck with the inner wall of the second hole.

Preferably, the screw passes through the first hole, so that the backing plate is placed between the screw head and the rupture sleeve.

Preferably, the bursting sleeve has a protrusion protruding upward, and the bottom of the eccentric has a groove corresponding to the protrusion, when the backing plate is placed between the screw head and the bursting sleeve, the The bumps are embedded in the grooves.

Preferably, the burst sleeve is embedded in the third hole of the second steel plate.

Preferably, at least three slits are provided at the lower end of the ruptured casing,

In addition, the bottom of the rupture sleeve has an inclined slope, and when the screw rod is screwed into the conical nut through the rupture sleeve, the conical head of the conical nut abuts the inclined surface.

Preferably, the outer side wall of the rupture casing is recessed inward to form a weakening groove.

An assembled unilateral bolt assembly provided by the present invention adopts a backing plate with an eccentric wheel, and embeds the eccentric wheel in the second hole of the outer steel plate (proximal steel plate) under construction, so that the eccentric wheel and the second hole are in contact with each other. The inner wall is stuck to limit the rotation of the backing plate, so as to ensure that the gasket does not rotate with the bolt during the construction process, reducing the application of auxiliary tools in construction, and eliminating the need to fix the end components, avoiding cumbersome construction and improving construction efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary illustrations and explanations, and should not be used as limitations on what is claimed in the present invention.

Description of drawings

Further objects, functions and advantages of the present invention will be elucidated by the following description of embodiments of the present invention with reference to the accompanying drawings, wherein:

Fig. 1 schematically shows an exploded view of each component of the assembled unilateral bolt assembly of the present invention.

FIG. 2 is a schematic diagram showing the structure of the backing plate of the assembled unilateral bolt assembly of the present invention.

FIG. 3 shows a schematic diagram of an assembled unilateral bolt assembly of the present invention, which is a cracked sleeve.

FIG. 4 shows a top view of the ruptured casing of FIG. 3 .

FIG. 5 shows a bottom view of the ruptured casing of FIG. 3 .

FIG. 6 shows a schematic diagram of the use process of the assembled unilateral bolt assembly of the present invention.

FIG. 7 is a schematic diagram showing the dislocation and embedding of the backing plate of the present invention into the second hole of the first steel plate.

Detailed ways

Objects and functions of the present invention and methods for achieving these objects and functions will be elucidated by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it may be implemented in various forms. The essence of the description is merely to assist those skilled in the relevant art to comprehensively understand the specific details of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numbers represent the same or similar parts, or the same or similar steps.

In order to solve the technical problem that the gasket rotates with the bolt during the construction of the unilateral bolt in the prior art, and an auxiliary tool is required to fix the gasket or the end during construction, the present invention provides an assembled unilateral bolt assembly.

According to an embodiment of the present invention, as shown in FIG. 1 , an exploded schematic diagram of each component of the assembled unilateral bolt assembly of the present invention. An assembled unilateral bolt assembly includes a bolt 1, and the bolt 1 includes a screw rod 102 and a screw head 101. The construction process is The screw head 101 is screwed. In some implementations, the bolt 1 can choose a regular hexagonal high-strength bolt screw.

An assembled unilateral bolt assembly further includes a cracking sleeve 3 , a conical nut 4 and a backing plate 2 . As shown in FIG. 2, a schematic diagram of the structure of the backing plate of the assembled unilateral bolt assembly of the present invention, wherein (a) is a cross-sectional view, (b) is a side view of (a), the backing plate 2 includes a washer portion 202, and The protruding eccentric wheel 203 has a first hole 201 in the gasket part. The first hole 201 penetrates the eccentric wheel 203. The diameter of the first hole 201 is the same as that of the screw 102. The bottom of the eccentric wheel 203 has a groove 204.

Figure 3 shows a schematic diagram of the split casing of the assembled unilateral bolt assembly of the present invention, Figure 4 shows a top view of the split casing in Figure 3, and Figure 5 shows a bottom view of the split casing in Figure 3. The expansion sleeve 3 is a cylindrical structure, and the diameter of the inner cavity 301 of the expansion sleeve 3 is the same as the diameter of the screw 102 .

The cracking sleeve 3 has a bump 302 protruding upward, and the groove 204 at the bottom of the eccentric wheel 203 corresponds to the position of the bump 302. After each component of the unilateral bolt assembly is assembled, the backing plate 2 is placed on the screw head 101 and the expander. Between the split casings 3 , the protrusions 302 are embedded in the grooves 204 , so that the backing plate 2 and the split casing 3 do not rotate relative to each other.

At least three slits 303 are opened at the lower end of the expansion sleeve 3, and six slits 303 are exemplarily opened in this embodiment (as shown in FIG. 5 ). After cracking the inner cavity 301 of the sleeve, screw it into the conical nut 4, and the conical head of the conical nut 4 abuts the inclined surface 305, so that the contact surface of the conical nut 4 and the cracking sleeve 3 does not rotate relative to each other.

According to the embodiments of the present invention, during the use of the unilateral bolt assembly provided by the present invention, in order to make it easier for the lower end of the ruptured sleeve 3 to achieve rupture, in some preferred embodiments, the outer wall of the ruptured sleeve 3 Recess inward to form a weakening groove 304. When the screw 201 is screwed into the inner ring 401 of the conical nut 4 (through the outer thread of the screw and the inner thread of the inner ring), the screw 201 is continuously rotated, and the conical nut 4 is squeezed to expand. The casing 3 is split, so that the lower end of the burst casing 3 is folded outward at the position of the weakening groove 304 to be split.

The following is a detailed description of the use process of the assembled unilateral bolt assembly provided by the present invention. As shown in FIG. 6, the schematic diagram of the use process of the assembled unilateral bolt assembly of the present invention is shown. The individual components of the bolt are assembled.

According to the embodiment of the present invention, the screw rod 102 is screwed into the inner ring 401 of the conical nut 4 through the inner cavity 301 of the burst sleeve 3 . According to the embodiment of the present invention, after each component is assembled, that is, after the bolt 1, the backing plate 2, the burst sleeve 3 and the conical nut 4 are assembled, the screw 102 passes through the first hole 102, so that the backing plate 2 is placed in the between the screw head 101 and the burst sleeve 3 .

The screw rod 102 of the bolt 1 passes through the first hole 201 of the backing plate 2 and the inner cavity 301 of the burst sleeve 3 , and the screw rod 102 is screwed into the conical nut 4 . The upper surface of the gasket part 202 of the backing plate 2 is in contact with the lower surface of the screw head 101, and the bump 302 of the burst sleeve 3 is embedded into the groove 204 opened on the lower surface of the eccentric wheel 203 of the backing plate 2 to ensure the gasket The plate 2 and the burst sleeve 3 do not rotate relative to each other.

The screw 102 of the bolt 1 is screwed into the conical nut 4, so that the conical head 402 of the conical nut 4 abuts the inclined surface 305 at the bottom of the expansion sleeve 3, so that the contact surface of the conical nut 4 and the expansion sleeve 3 is not opposite. turn.

After the assembly of the unilateral bolt components is completed according to the above process of this embodiment, the unilateral bolt components are extended from the first steel plate 5 that is convenient for construction into the second hole 501 of the first steel plate 5 and the second steel plate 6 that is not convenient for construction. inside the third hole 601.

According to the embodiment of the present invention, the diameter of the arc of the eccentric wheel 203 is greater than/equal to the diameter of the second hole 203 of the first steel plate 5 in which the eccentric wheel 203 is embedded, and the eccentric wheel 203 of the backing plate 2 is embedded in the first steel plate 5 Inside the two holes 501 . The outer diameter of the burst sleeve 3 is the same as the inner diameter of the third hole 601 of the second steel plate 6 , and the burst sleeve 3 is embedded in the third hole 601 of the second steel plate 6 . The outer diameter of the conical nut 4 is the same as the inner diameter of the third hole 601 of the second steel plate 6 , and the conical nut 4 passes through the third hole and is placed on the side that is inconvenient for construction.

According to the embodiment of the present invention, when the unilateral bolt assembly fixes the first steel plate and the second steel plate, the eccentric wheel 203 is embedded in the second hole 504 of the first steel plate 5, so that the eccentric wheel 203 and the inner wall of the second hole 203 are clamped Dead, limit the rotation of the backing plate.

As shown in FIG. 7 , the backing plate of the present invention is dislocated and embedded in the second hole of the first steel plate. In some embodiments, when the diameter of the arc of the eccentric wheel 203 is larger than the second hole of the first steel plate 5 in which the eccentric wheel 203 is embedded When the diameter of the hole 203 is adjusted, the eccentric wheel 203 is embedded in the second hole 504 of the first steel plate 5 by dislocating the first steel plate 5 to ensure that the eccentric wheel 203 and the inner wall of the second hole 203 are stuck.

In other embodiments, when the diameter of the arc of the eccentric wheel 203 is equal to the diameter of the second hole 203 of the first steel plate 5 in which the eccentric wheel 203 is embedded, the first steel plate 5 is installed by dislocation, and the eccentric wheel 203 is embedded in the first steel plate 5. In the second hole 501 of the steel plate 5, the arc 2031 of the eccentric wheel 203 deviates from the inner wall 5011 of the second hole 501, so that the eccentric wheel 203 and the inner wall 5011 of the second hole 501 are stuck, preventing the backing plate 2 from being stuck during the screwing process. Screw 1 rotates together.

After the unilateral bolt assembly is installed through the above process, the unilateral bolt assembly passes through the first steel plate 5 and the second steel plate 6, and the lower surface of the gasket portion 202 of the bolt backing plate 2 abuts against the outer surface of the first steel plate 5, and passes through the first steel plate 5 and the second steel plate 6. Screw the screw head 101 on the side that is convenient for construction (the outer side of the first steel plate 5 ), so that the conical nut 4 moves along the axial direction of the screw 102 (direction B in FIG. 6 ), and squeezes the At the lower end, the lower end of the cracking sleeve 3 is folded and cracked along the gap 303 and the weakening groove 304, and then abuts the second steel plate 6 to realize the fixation of the first steel plate 5 and the second steel plate 6 by the unilateral bolt assembly.

An assembled unilateral bolt assembly provided by the present invention adopts a backing plate with an eccentric wheel, and embeds the eccentric wheel in the second hole of the outer steel plate (proximal steel plate) under construction, so that the eccentric wheel and the second hole are in contact with each other. The inner wall is stuck, restricting the rotation of the backing plate, so as to ensure that the gasket does not rotate with the bolt during the construction process, reducing the application of auxiliary tools in construction, avoiding cumbersome construction and improving construction efficiency.

Other embodiments of the present invention will be readily apparent to and understood by those skilled in the art in conjunction with the specification and practice of the present invention disclosed herein. The description and examples are to be regarded as exemplary only, with the true scope and spirit of the invention being defined by the claims.

Claims (7)

1. An assembled unilateral bolt assembly, characterized in that the unilateral bolt assembly comprises a screw rod, and the screw rod is screwed into the conical nut through a cracking sleeve; The unilateral bolt assembly further includes a backing plate, the backing plate includes a gasket portion and a protruding eccentric wheel, the gasket portion is provided with a first hole, and the first hole penetrates the eccentric wheel; The diameter of the arc of the eccentric is greater than/equal to the diameter of the second hole of the first steel plate in which the eccentric is embedded. When the unilateral bolt assembly fixes the first steel plate and the second steel plate, the eccentric is embedded in into the second hole of the first steel plate, so that the eccentric wheel is stuck with the inner wall of the second hole, and the rotation of the backing plate is restricted. 2 . The unilateral bolt assembly according to claim 1 , wherein when the diameter of the arc of the eccentric wheel is equal to the diameter of the second hole of the first steel plate in which the eccentric wheel is embedded, the eccentric wheel is embedded in the first steel plate. 3 . inside the second hole, and the arc of the eccentric wheel deviates from the inner wall of the second hole, so that the eccentric wheel and the inner wall of the second hole are stuck. 3 . The unilateral bolt assembly according to claim 1 , wherein the screw rod passes through the first hole, so that the backing plate is placed between the screw head and the rupture sleeve. 4 . 4. The unilateral bolt assembly according to claim 3, wherein the cracking sleeve has a convex block protruding upward, and the bottom of the eccentric has a groove corresponding to the convex block, when the backing plate is shown It is placed between the screw head and the burst sleeve, and the protrusion is embedded in the groove. 5 . The unilateral bolt assembly according to claim 1 , wherein the rupture sleeve is embedded in the third hole of the second steel plate. 6 . 6. The unilateral bolt assembly according to claim 1 or 3 or 4 or 5, wherein at least three slits are provided at the lower end of the burst sleeve, In addition, the bottom of the rupture sleeve has an inclined slope, and when the screw rod is screwed into the conical nut through the rupture sleeve, the conical head of the conical nut abuts the inclined surface. 7 . The unilateral bolt assembly according to claim 6 , wherein the outer side wall of the burst sleeve is recessed inward to form a weakening groove. 8 .

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