A sleeve type expansion anchor with expansion clip
By introducing expansion clips and sleeves into the sleeve expansion anchor bolt, the problem of short effective anchoring depth and limited pull-up bearing capacity after tightening is solved, and higher anchor stability and pull-up bearing capacity are achieved.
Patent Information
- Application Number
- CN202421541088.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-07-02
AI Technical Summary
After the casing expansion anchor bolt is tightened, the external sleeve has a short effective anchoring depth and limited resistance to pull-up bearing capacity due to deformation.
The sleeve-type expansion anchor bolt design with expansion clips is adopted. Through the combination of anchor rods, hex nuts, flat washers, sleeves and expansion clips, the hex nuts are tightened to make the anchor rods squeeze the sleeves and expansion clips, causing them to deform, thereby increasing the anchor depth and resistance to pull-up bearing capacity.
Through the deformation of the expansion clip and sleeve, the anchoring stability and pull-resistant bearing capacity are increased, which is suitable for occasions where structural bearing capacity is higher.
Smart Images
Figure CN222702321U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of expansion anchor bolts, in particular to a sleeve-type expansion anchor bolt with an expansion clip. Background Art
[0002] Expansion anchors are a common building fastener, widely used in the fixing and connection of various structures. They provide strong fixing force by expanding during installation. Sleeve-type expansion anchors use thickened sleeves and enlarged flat washers. After tightening, the convex combination of sleeve and screw provides anchoring bearing capacity, which has certain seismic resistance and durability.
[0003] However, there is a phenomenon during installation that after the sleeve-type expansion bolt is tightened, the external expandable sleeve is squeezed and deformed, resulting in a longer exposed threaded portion and a shorter effective anchoring depth after the sleeve-type expansion anchor bolt is torqued, providing limited pull-out bearing capacity. Utility Model Content
[0004] The utility model aims to provide a sleeve-type expansion anchor with an expansion clip to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sleeve-type expansion anchor bolt with an expansion clip, comprising an anchor rod, one end of the outer wall of the anchor rod is sleeved with a hexagonal nut and a flat washer;
[0006] A first expansion component is arranged on the outside of the anchor rod, and a second expansion component is arranged on the other end of the outer wall of the anchor rod. The first expansion component includes a sleeve, which is sleeved on the outside of the anchor rod, and an expansion gap is opened on the outer wall of the sleeve. The second expansion component includes an expansion clip, which is sleeved on the outer wall of the anchor rod.
[0007] Preferably, a first expansion cone head is provided on the outside of the anchor rod, and the anchor rod is divided into a first bare rod part and a second bare rod part under the action of the first expansion cone head, the sleeve is sleeved on the outside of the first bare rod part, and the expansion clip is sleeved on the outside of the second bare rod part.
[0008] Preferably, the first expansion cone head acts on the sleeve, and a second expansion cone head is provided at the end of the outer wall of the second bare rod portion, and the second expansion cone head acts on the expansion clip.
[0009] Preferably, the outer wall of the first polished rod portion is provided with an external thread, the hexagonal nut is threadably sleeved on the outer wall of the first polished rod portion via the external thread, and the flat washer is located between the hexagonal nut and the sleeve.
[0010] Preferably, a first hole is formed on the outer wall of the sleeve, a second hole is formed on the outer wall of the sleeve, and a protrusion is fixedly connected to one end of the outer wall of the sleeve.
[0011] Preferably, a clip gap is formed on the back side of the expansion clip, a first protrusion is connected to the expansion clip, and a second protrusion is connected to the outer wall of the expansion clip.
[0012] Technical effects and advantages of the utility model:
[0013] The utility model utilizes the coordinated use of anchor rods, hexagonal nuts, flat washers, sleeves and expansion clips. By tightening the hexagonal nuts, the anchor rods can be squeezed against the sleeves and the expansion clips, causing the sleeves and the expansion clips to deform and lock the anchor rods, thereby increasing the effective anchoring depth and improving the overall pull-out bearing capacity. The utility model can be applied to occasions requiring higher structural bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0015] Figure 2 It is a schematic diagram of the internal structure of the front side of the utility model.
[0016] Figure 3 It is a schematic diagram of the back structure of the expansion clip of the utility model.
[0017] In the figure: 1. anchor rod; 11. first expansion cone head; 12. first bare rod portion; 13. second bare rod portion; 14. second expansion cone head; 15. external thread; 2. hexagonal nut; 3. flat washer; 4. first expansion assembly; 41. sleeve; 42. first hole; 43. second hole; 44. expansion gap; 45. protrusion; 5. second expansion assembly; 51. expansion clip; 52. first raised portion; 53. second raised portion; 54. clip gap. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] The utility model provides Figure 1-3The illustrated embodiment is a sleeve-type expansion anchor with an expansion clip, comprising an anchor rod 1, one end of the outer wall of the anchor rod 1 being sleeved with a hexagonal nut 2 and a flat washer 3, a first expansion component 4 being arranged on the outside of the anchor rod 1, and a second expansion component 5 being arranged on the other end of the outer wall of the anchor rod 1, the first expansion component 4 comprising a sleeve 41, the sleeve 41 being sleeved on the outside of the anchor rod 1, an expansion gap 44 being formed on the outer wall of the sleeve 41, the second expansion component 5 comprising an expansion clip 51, the expansion clip 51 being sleeved on the outer wall of the anchor rod 1, when the anchor rod 1, the sleeve 41 and the expansion clip 51 are installed in a substrate, the hexagonal nut 2 is tightened, so that the anchor rod 1 can squeeze the sleeve 41 and the expansion clip 51, causing both the sleeve 41 and the expansion clip 51 to expand, thereby making the two parts on the outside of the anchor rod 1 have expansion clamping parts, thereby improving the stability of the installation of the anchor rod 1.
[0020] Furthermore, a first expansion cone head 11 is provided on the outside of the anchor rod 1. Under the action of the first expansion cone head 11, the anchor rod 1 is divided into a first light rod part 12 and a second light rod part 13. An external thread 15 is provided on the outer wall of the first light rod part 12. The hexagonal nut 2 is threadedly sleeved on the outer wall of the first light rod part 12 through the external thread 15. The flat washer 3 is located between the hexagonal nut 2 and the sleeve 41. The flat washer 3 increases the contact area with the substrate, protects the surface of the substrate, and reduces the friction between the hexagonal nut 2 and the sleeve 41 when rotating. When tightening the hexagonal nut 2, the anchor rod 1 can drive the first expansion cone head 11 to squeeze the sleeve 41. The sleeve 41 is expanded from the expansion gap 44, the sleeve 41 is sleeved on the outside of the first bare rod portion 12, the expansion clip 51 is sleeved on the outside of the second bare rod portion 13, the first expansion cone head 11 acts on the sleeve 41, the end of the outer wall of the second bare rod portion 13 is provided with a second expansion cone head 14, the second expansion cone head 14 acts on the expansion clip 51, and a clip gap 54 is provided on the back side of the expansion clip 51. When the hexagonal nut 2 is tightened, the anchor rod 1 can drive the second expansion cone head 14 to squeeze the expansion clip 51, so that the expansion clip 51 expands from the clip gap 54, thereby fixing and restraining the anchor rod 1 again.
[0021] Furthermore, a first hole 42 is formed on the outer wall of the sleeve 41, and a second hole 43 is formed on the outer wall of the sleeve 41. The first hole 42 and the expansion gap 44 make it easy for the sleeve 41 to expand and open and reduce its own weight. A protrusion 45 is fixedly connected to one end of the outer wall of the sleeve 41. The protrusion 45 increases the squeezing force between the sleeve 41 and the substrate after expansion, resulting in increased friction, thereby increasing the anchor bearing capacity. The expansion clip 51 is connected to a first protrusion 52, and the outer wall of the expansion clip 51 is connected to a second protrusion 53. The first protrusion 52 and the second protrusion 53 can increase the friction of the expansion clip 51 installed in the substrate, thereby tightening the hexagonal nut 2 to reduce the situation where the expansion clip 51 moves with the anchor rod 1.
[0022] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A sleeve-type expansion anchor bolt with an expansion clip, comprising an anchor rod (1), wherein one end of the outer wall of the anchor rod (1) is sleeved with a hexagonal nut (2) and a flat washer (3); It is characterized in that A first expansion component (4) is arranged on the outside of the anchor rod (1), and a second expansion component (5) is arranged on the other end of the outer wall of the anchor rod (1). The first expansion component (4) includes a sleeve (41), and the sleeve (41) is sleeved on the outside of the anchor rod (1). An expansion gap (44) is formed on the outer wall of the sleeve (41). The second expansion component (5) includes an expansion clip (51), and the expansion clip (51) is sleeved on the outer wall of the anchor rod (1).
2. The expansion anchor bolt with expansion clip according to claim 1, characterized in that: The anchor rod (1) is provided with a first expansion cone head (11) on the outside. The anchor rod (1) is divided into a first bare rod part (12) and a second bare rod part (13) under the action of the first expansion cone head (11). The sleeve (41) is sleeved on the outside of the first bare rod part (12), and the expansion clip (51) is sleeved on the outside of the second bare rod part (13).
3. The expansion anchor bolt with expansion clip according to claim 2, characterized in that: The first expansion cone head (11) acts on the sleeve (41), and a second expansion cone head (14) is provided at the end of the outer wall of the second light rod portion (13), and the second expansion cone head (14) acts on the expansion clip (51).
4. The expansion anchor bolt with expansion clip according to claim 3, characterized in that: The outer wall of the first polished rod portion (12) is provided with an external thread (15), the hexagonal nut (2) is threadedly sleeved on the outer wall of the first polished rod portion (12) via the external thread (15), and the flat washer (3) is located between the hexagonal nut (2) and the sleeve (41).
5. The sleeve-type expansion anchor with expansion clip according to claim 4, characterized in that: The outer wall of the sleeve (41) is provided with a first hole (42), the outer wall of the sleeve (41) is provided with a second hole (43), and one end of the outer wall of the sleeve (41) is fixedly connected with a protrusion (45).
6. The sleeve-type expansion anchor with expansion clip according to claim 1, characterized in that: A clip gap (54) is provided on the back of the expansion clip (51), the expansion clip (51) is connected to a first protrusion (52), and the outer wall of the expansion clip (51) is connected to a second protrusion (53).