CN220748746U

CN220748746U - Split anchor bolt

Info

Publication number: CN220748746U
Application number: CN202322333338.6U
Authority: CN
Inventors: 施建华
Original assignee: Guke Energy Conservation Technology Co ltd
Current assignee: Guke Energy Conservation Technology Co ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2024-04-09
Anticipated expiration: 2033-08-29

Abstract

The utility model discloses a split anchor bolt, which belongs to the technical field of fastening and comprises a connecting piece, an expansion block and an expansion pipe which are connected in a split mode, wherein the expansion pipe comprises a connecting part and an expansion part which are mutually communicated, the expansion block is contained in the connecting part and can be pushed to the expansion part by the connecting piece, the connecting part is connected with the connecting piece, the expansion part is arranged at one end, far away from the connecting part, of the connecting part, and a plurality of through holes for slurry circulation are formed in the connecting part. The split anchor bolt adopts the connecting piece, the expansion block and the expansion pipe which are connected in a split way, and the connecting piece and the expansion block are arranged in a split way, so that after the expansion pipe is fixed, the position of the connecting piece can be adjusted, and the expansion anchor bolt can be adjusted according to fixed objects with different thicknesses, and has wide applicability.

Description

Split anchor bolt

Technical Field

The utility model belongs to the technical field of fastening, and particularly relates to a split anchor bolt.

Background

An anchor bolt is a device for securing an object to a substrate (e.g., concrete, masonry, metal, etc.) to provide a secure connection and support. Anchors are commonly used in the fields of construction, structural engineering, machine manufacturing, etc., for securing objects against movement, sliding or falling off.

The choice of anchor bolt depends on the specific application scenario, material and load requirements. There are different types of anchors, such as mechanical anchors, chemical anchors, expansion anchors, etc., each of which is suitable.

The expansion anchor works by inserting the anchor into a pre-drilled hole and then expanding the expansion portion of the anchor outwardly by tightening a nut or bolt head. Such expansion portions are typically composed of a plurality of segments or sheet-like structures which, under the action of external forces (nut tightening), expand, fill the borehole and create friction and expansion forces to secure the anchor in the substrate.

An anchor-measuring integrated monitoring expansion bolt with the publication number of CN206668695U comprises a bolt, an expansion ring, a large gasket, a spring gasket, a hexagonal nut, a reflecting point, threads, a notch and a raised head, wherein the upper part of the bolt is provided with the threads, and the lower part of the bolt is provided with the raised head. The convex head and the bolt are integrally connected, so that the expansion ring is opened by the convex head, the bolt can not be screwed out after being screwed in, and otherwise, the convex head is separated from the expansion ring, and the fastening effect can not be realized. The positions of the bolts are limited, so that the expansion bolts with the same specification cannot adapt to the installation of fastened objects with different thicknesses. When the thickness of the fastened object is large, even the length of the expansion ring is exceeded, the expansion bolt can not play any fastening role.

Disclosure of Invention

The object of the present utility model is to propose a split anchor bolt which overcomes at least one of the above-mentioned drawbacks of the prior art.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a split anchor bolt, which comprises a connecting piece, an expansion block and an expansion pipe, wherein the connecting piece, the expansion block and the expansion pipe are connected in a split mode, the expansion pipe comprises a connecting part and an expansion part which are communicated with each other, the expansion block is accommodated in the connecting part and can be pushed to the expansion part by the connecting piece, the connecting part is connected with the connecting piece, the expansion part is arranged at one end, far away from the connecting part, of the connecting part, and a plurality of through holes for slurry circulation are formed in the connecting part.

Preferably, the plurality of through holes are divided into a plurality of groups of holes distributed at intervals along the length direction of the connecting part, and the groups of holes comprise at least one through hole.

Preferably, the through holes of adjacent hole groups are arranged in a staggered manner.

Preferably, the through hole is one of a bar hole, a round hole, an elliptical hole and a square hole.

Preferably, the expansion part comprises a plurality of expansion arms, gaps are reserved between the adjacent expansion arms, and the inner walls of the expansion arms are provided with abutting parts which abut against the expansion blocks when the expansion blocks are pushed to the expansion part from the connecting part, so that the expansion blocks prop the expansion arms open.

Preferably, the abutment is a protrusion formed by inwardly protruding an inner wall of the expansion arm or an inclined surface formed by gradually inclining the inner wall of the expansion arm inwardly from an end close to the connecting portion to an end far from the connecting portion.

Preferably, the outer surface of the expansion arm has grooves for increasing friction.

Preferably, the grooves are arc-shaped grooves, and the cross section of the expansion block is trapezoid.

Preferably, the length of the connecting portion is 50-100mm, the inner diameter is 5-7mm, the length of the expansion portion is 15-40mm, and the length of the expansion block is smaller than the length of the expansion portion.

Preferably, the connecting member is a bolt, and the inside of the connecting portion has an internal thread screwed with the bolt.

The beneficial effects of the utility model are as follows:

1. adopt connecting piece, expansion piece and the expansion pipe of split type connection, because connecting piece and expansion piece are the components of a whole that can function independently setting, after fixed expansion pipe, the position of connecting piece is adjustable, can be adjusted by the fixed thing according to different thickness, extensive applicability.

2. The seepage of the solidified slurry is facilitated through the arrangement of the through holes, and the connection stability of the expansion pipe and the base material is greatly improved.

3. The dual mode of expansion and chemical fastening is adopted, the expansion pipe is fastened in the base material in an expansion mode, so that the expansion pipe is static and is disturbed, and then the subsequent chemical fastening operation is carried out, and the anchoring force is strong.

4. Through the through-hole of dislocation setting, combine along connecting portion length direction interval distribution's through-hole, not only from the circumference of connecting portion, realize the even exudation distribution of thick liquid from the axial of connecting portion moreover, improve the connection stability of expansion pipe and substrate greatly.

5. Through the arrangement of the grooves, the friction force between the expansion arm and the matrix can be increased, and the drawing resistance is further improved.

Drawings

Fig. 1 is a schematic diagram of an explosion structure according to a first embodiment of the present utility model.

Fig. 2 is a schematic diagram of an assembled structure (without injecting the cured slurry) according to the first embodiment of the present utility model.

Fig. 3 is a schematic diagram of an assembly structure (injecting a curing slurry) according to a first embodiment of the present utility model.

Figure 4 is a schematic cross-sectional view of an expansion vessel according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram of a front view of a second expansion pipe according to an embodiment of the present utility model.

Figure 6 is a schematic cross-sectional view of a second expansion vessel according to an embodiment of the present utility model.

Fig. 7 is a schematic front view of a second expansion block according to an embodiment of the present utility model.

The marks in the drawings are: 1-connecting piece, 2-expansion block, 3-expansion pipe, 31-connecting part, 32-expansion part, 311-through hole, 321-expansion arm, 322-gap, 3211-abutting part, 3212-groove, 312-internal thread and 4-curing slurry.

Detailed Description

The utility model will now be further described with reference to the drawings and detailed description.

What is not described in detail in this specification is prior art known to those skilled in the art. In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Embodiment one:

as shown in fig. 1 to 4, a split anchor bolt provided in the present embodiment includes a connecting member 1, an expansion block 2, and an expansion tube 3 that are split-type connected.

The expansion pipe 3 includes a connecting portion 31 and an expansion portion 32 which communicate with each other, and the connecting portion 31 and the expansion portion 32 are integrally provided. The expansion block 2 is accommodated in the connecting portion 31 and can be pushed to the expansion portion 32 by the connecting member 1. The connector 1 of the present embodiment is a bolt, and the left side of the inside of the connecting portion 31 has an internal thread 312 screwed with the bolt. The connecting part 31 is connected with the connecting piece 1, the expansion part 32 is arranged at the right end of the connecting part 31, and the connecting part 31 is provided with a plurality of through holes 311 for slurry circulation.

In use, the base material is drilled, the expansion pipe 3 is driven into the drilled hole, the expansion block 2 is plugged into the connecting portion 31, and then the bolt is screwed to push the expansion block 2 to the expansion portion 32. Specifically, the expansion portion 32 includes four expansion arms 321, gaps 322 are provided between adjacent expansion arms 321, and an inner wall of the expansion arm 321 has an abutment portion 3211 that abuts against the expansion block 2 when the expansion block 2 is pushed from the connection portion 31 to the expansion portion 32, so that the expansion block 2 expands the expansion arms 321. The expansion block 2 pushes the abutment 3211 so that the expansion arms 321 are spread apart, filling the borehole and creating friction and expansion forces, thereby securing the expansion pipe 3 in the substrate. After the expansion pipe 3 is fixed, the bolt is withdrawn, solidified slurry is injected into the expansion pipe 3, then the bolt is screwed into the connecting part 31, the bolt pushes the solidified slurry to flow out of the through hole 311, the solidified slurry fills the inner space of the expansion pipe 3 between the expansion block 2 and the bolt and the through hole 311, and the solidified slurry permeates through the through hole 311 to infiltrate into the base material, so that firm connection is formed. The connection stability of the expansion pipe 3 and the base material and the connection stability between the bolt and the expansion block 2 are enhanced by the solidified slurry, so that the overall stability of the split anchor bolt is ensured. The setting of the through holes 311 is beneficial to the exudation of the solidified slurry, and the connection stability of the expansion pipe 3 and the base material is greatly improved. Because the bolt and the expansion block 2 are arranged in a split mode, after the expansion pipe 3 is fixed, the position of the bolt can be adjusted, and the fixed object can be adjusted according to different thicknesses, so that the applicability is wide. Therefore, the expansion pipe 3 is fastened in the base material in an expansion mode by adopting the dual mode of expansion and chemical fastening, so that the expansion pipe 3 is static and is disturbed, and then the subsequent chemical fastening operation is carried out, and the anchoring force is strong.

Wherein, the plurality of through holes 311 are divided into a plurality of groups of holes distributed at intervals along the length direction of the connecting portion 31, and each group of holes comprises two through holes 311 symmetrically arranged along the axis of the connecting portion 31. The through holes 311 of adjacent hole groups are arranged in a staggered manner. Through the through holes 311 arranged in a staggered manner, through holes 311 distributed at intervals along the length direction of the connecting part 31 are combined, so that the slurry is uniformly exuded from the circumferential direction of the connecting part 31 and the axial direction of the connecting part 31, and the connection stability of the expansion pipe 3 and the base material is greatly improved. The through hole 311 of the present embodiment is a bar hole.

The abutting portion 3211 of the present embodiment is an inclined surface formed by gradually inclining the inner wall of the expansion arm 321 inward from the left end to the right end, and due to the inclined surface, when the expansion block 2 moves rightward from the connecting portion 31 to the expansion portion 32, the expansion block 2 can more quickly prop up the expansion arm 321.

Wherein the outer surface of the expansion arm 321 has grooves 3212 for increasing friction. By the arrangement of the grooves 3212, the friction force between the expansion arms 321 and the matrix can be increased, and the drawing resistance is further improved.

The groove 3212 in this embodiment is an arc-shaped groove 3212, and the cross section of the expansion block 2 is trapezoidal. The expansion block 2 with the trapezoid cross section can be matched and transited with the inclined plane better, and the expansion arm 321 is expanded.

The length of the connecting portion 31 of this embodiment is 54mm, the inner diameter is 6mm, the length of the expansion portion 32 is 26mm, and the length of the expansion block 2 is smaller than the length of the expansion portion 32 and is 25mm.

Embodiment two:

as shown in fig. 5 to 7, the present embodiment is different from the first embodiment in that:

the supporting portion 3211 is a protruding portion formed by protruding the inner wall of the expansion arm 321 inwards, the through hole 311 is a circular hole, the cross section of the expansion block 2 is combined with a trapezoid and a rectangle, the right end of the expansion block is trapezoid, the left end of the expansion block is rectangle, and the expansion arm 321 is more beneficial to being matched with the protruding portion through the right end of the trapezoid.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A split anchor bolt, which is characterized in that:

comprises a connecting piece, an expansion block and an expansion pipe which are connected in a split type;

the expansion pipe comprises a connecting part and an expansion part which are communicated with each other;

the expansion block is accommodated in the connecting part and can be pushed to the expansion part by the connecting piece;

the connecting part is connected with the connecting piece;

the expansion part is arranged at one end of the connecting part far away from the connecting part;

the connecting part is provided with a plurality of through holes for slurry to flow through.

2. The split anchor as set forth in claim 1, wherein:

the through holes are divided into a plurality of groups of holes which are distributed at intervals along the length direction of the connecting part, and each group of holes comprises at least one through hole.

3. The split anchor as set forth in claim 2, wherein:

the through holes of the adjacent hole groups are arranged in a staggered mode.

4. The split anchor as set forth in claim 1, wherein:

the through hole is one of a strip hole, a round hole, an elliptical hole and a square hole.

5. The split anchor as set forth in claim 1, wherein:

the expansion part comprises a plurality of expansion arms, and gaps are reserved between adjacent expansion arms;

the inner wall of the expansion arm is provided with an abutting part which abuts against the expansion block when the expansion block is pushed to the expansion part from the connecting part, so that the expansion block can prop open the expansion arm.

6. The split anchor as set forth in claim 5, wherein:

the supporting part is a protruding part formed by protruding the inner wall of the expansion arm inwards or an inclined surface formed by gradually inclining the inner wall of the expansion arm inwards from one end close to the connecting part to one end far away from the connecting part.

7. The split anchor as set forth in claim 5, wherein:

the outer surface of the expansion arm is provided with a groove for increasing friction force.

8. The split anchor as set forth in claim 7, wherein:

the grooves are arc-shaped grooves;

the cross section of the expansion block is trapezoid.

9. The split anchor as set forth in claim 1, wherein:

the length of the connecting part is 50-100mm, and the inner diameter is 5-7mm;

the length of the expansion part is 15-40mm;

the length of the expansion block is smaller than the length of the expansion part.

10. The split anchor as set forth in claim 1, wherein:

the connecting piece is a bolt, and the inside of the connecting part is provided with an internal thread in threaded connection with the bolt.