Anchor bolt
By designing the combination of mechanical anchoring of screws and sleeves in hollow walls and chemical anchoring of screw glue, the problems of insufficient load-bearing capacity and easy damage of expansion bolts are solved, and an efficient anchoring effect in hollow walls is achieved.
Patent Information
- Application Number
- CN202421129790.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The use of expansion bolts in existing hollow walls has problems such as limited load-bearing capacity, easy damage to the wall and affecting the structural integrity of the wall.
An anchor bolt including a screw and a sleeve is designed to realize mechanical anchoring in the hollow wall through the round part of the screw and the expansion part of the sleeve, and glue through the opening of the screw, combining mechanical and chemical double-layer anchoring. Improve anchoring effect.
The anchoring effect is achieved in hollow walls that provide sufficient load-bearing capacity and does not easily damage the wall structure. Through mechanical and chemical double-layer anchoring, the anchoring effect is significantly improved.
Smart Images
Figure CN222254593U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anchoring, in particular to an anchoring bolt. Background Art
[0002] The expansion bolts used in existing hollow walls have the following problems:
[0003] 1. Limited load-bearing capacity: The load-bearing capacity of expansion bolts depends on the type and thickness of the wall material, as well as the size and design of the bolts themselves. In hollow walls, due to the thinner material, the fixing force that expansion bolts can provide may be limited.
[0004] 2. Easy to damage the wall: When installing the expansion bolts, if the operation is improper, the wall may be damaged, especially the hollow wall, which may cause the wall to crack or some materials to peel off.
[0005] 3. Impact on wall structure: Using expansion bolts in hollow walls may affect the structural integrity of the wall.
[0006] Based on the above reasons, it is necessary to propose an anchor bolt with sufficient bearing capacity and not easy to damage the wall structure. Utility Model Content
[0007] The technical problem to be solved by the utility model is: to provide an anchor bolt in order to overcome the deficiencies in the prior art.
[0008] The utility model solves the technical problem by adopting a technical solution: an anchor bolt comprises a screw rod and a sleeve sleeved outside the screw rod.
[0009] One end of the screw is provided with an external thread, and the other end is a truncated cone portion expanding into the hollow wall. A cylindrical portion extends into the hollow wall from the side of the truncated cone portion away from the external thread.
[0010] The sleeve is provided with a slot opening toward one side of the truncated cone portion of the screw rod, and the slot includes a circular hole and a long slot connected as one from the outside to the inside of the hollow wall.
[0011] During assembly, the expansion portion of the sleeve with slots that expands into the hollow wall is clamped on the inner side of the mounting hole of the hollow wall, and the truncated cone portion of the screw is clamped on the inner wall of the expansion portion of the sleeve. The expansion portion of the sleeve is used to mechanically anchor the anchor bolt in the hollow wall.
[0012] Furthermore, the screw rod is provided with an opening near one end of the external thread, and a through hole connected to the opening is provided on the outer wall of the screw rod. When in use, glue is applied through the opening of the screw rod, and the glue overflows through the through hole after passing through the opening, filling between the screw rod and the sleeve and between the sleeve and the anchor bolt hole, and cooperates with the mechanical anchoring force to achieve mechanical and chemical double-layer anchoring, thereby improving the anchoring effect.
[0013] Furthermore, the diameter of the cylindrical portion is greater than or equal to the maximum end face diameter of the truncated cone portion, thereby ensuring that the screw can be locked on the inner wall of the expansion portion of the sleeve.
[0014] Furthermore, the height of the long groove is less than the diameter of the circular hole. When forming the expansion part of the sleeve, the sleeve is driven into the mounting hole by external force, and the long groove of the sleeve gradually expands and is stuck on the outer side of the truncated cone of the screw; the circular hole with a larger diameter is used to ensure the convenience and stability of the expansion part formation process.
[0015] Furthermore, the number of the slots evenly distributed is 2-4.
[0016] The beneficial effects of the utility model are as follows: the anchor bolt of the utility model has sufficient bearing capacity after experiments; during anchoring, the sleeve is driven into the inside of the installation hole by external force, and the long groove of the sleeve gradually expands, and the sleeve forms an expansion part that is stuck on the outside of the truncated cone part of the screw, and the expansion part is stuck on the inner side of the installation hole of the hollow wall, and the whole operation is not easy to damage the wall structure. Through the expansion part of the sleeve, the anchor bolt is anchored in the hollow wall from a mechanical perspective. Glue is applied through the opening of the screw, and the glue overflows through the through hole after passing through the opening, filling between the screw and the sleeve and between the sleeve and the anchor bolt hole, and cooperates with the mechanical anchoring force to achieve mechanical and chemical double-layer anchoring, thereby improving the anchoring effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a structural schematic diagram of the utility model;
[0019] Figure 2 It is a schematic diagram of the assembly structure of the utility model;
[0020] Figure 3 It is another structural schematic diagram of the utility model.
[0021] Numbers in the figure: 1-screw, 11-cylindrical part, 12-conical part, 13-opening, 14-through hole, 2-sleeve, 21-circular hole, 22-long groove, 3-hollow wall, 4-tapping tool. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.
[0023] Figure 1 and Figure 2 The anchor bolt shown in the figure comprises a screw rod 1 and a sleeve 2 sleeved outside the screw rod 1.
[0024] One end of the screw rod 1 is provided with an external thread, and the other end is a truncated cone portion 12 expanding into the hollow wall 3. The truncated cone portion 12 has a cylindrical portion 11 extending into the hollow wall 3 on the side away from the external thread.
[0025] The sleeve 2 is provided with a slot opening toward one side of the truncated cone portion 12 of the screw rod 1. The slot includes a circular hole 21 and a long slot 22 which are connected as one from the outside to the inside of the hollow wall 3.
[0026] During assembly, the sleeve 2 with slots forms an expansion portion that expands into the hollow wall 3 and is clamped on the inner side surface of the mounting hole of the hollow wall 3, and the truncated cone portion 12 of the screw rod 1 is clamped on the inner wall of the expansion portion of the sleeve 2. The expansion portion of the sleeve 2 is used to achieve the anchoring of the anchor bolt in the hollow wall 3 from a mechanical perspective.
[0027] The diameter of the cylindrical portion 11 is equal to the maximum end surface diameter of the truncated cone portion 12 .
[0028] The height of the long groove 22 is less than the diameter of the circular hole 21. When forming the expansion portion of the sleeve 2, the sleeve 2 is driven into the mounting hole by external force, and the long groove 22 of the sleeve 2 gradually expands and is stuck on the outside of the truncated cone portion 12 of the screw 1; the circular hole with a larger diameter is used to ensure the convenience and stability of the expansion portion forming process.
[0029] There are 4 slotted even rings.
[0030] During assembly, first drill a hole on the hollow wall 3, then insert the assembled screw 1 and sleeve 2 into the mounting hole as a whole, then use the knocking tool 4 to knock the sleeve 2 into the mounting hole until an expansion portion is formed that is locked on the outside of the truncated cone portion 12 of the screw 1, then the expansion portion is locked on the inner side surface of the mounting hole of the hollow wall 3, and finally fix the load on the rod tail at the outer end of the screw 1 and tighten the nut.
[0031] like Figure 3 As shown, as a preferred embodiment, an opening 13 is provided at one end of the screw rod 1 near the external thread, and a through hole 14 connected to the opening 13 is provided on the outer wall of the screw rod 1. When in use, glue is applied through the opening 13 of the screw rod 1, and the glue overflows through the through hole 14 after passing through the opening 13, and fills between the screw rod 1 and the sleeve 2 and between the sleeve 2 and the anchor bolt hole, and cooperates with the mechanical anchoring force to achieve mechanical and chemical double-layer anchoring, thereby improving the anchoring effect.
[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An anchor bolt, characterized in that: It comprises a screw rod (1) and a sleeve (2) sleeved outside the screw rod (1). The screw rod (1) has an external thread at one end and a truncated cone (12) extending into the hollow wall (3) at the other end. The truncated cone (12) has a cylindrical portion (11) extending into the hollow wall (3) on the side away from the external thread. The sleeve (2) is provided with a slot opening toward one side of the truncated cone portion (12) of the screw rod (1), and the slot includes a circular hole (21) and a long slot (22) connected together in sequence from the outside to the inside of the hollow wall (3). During assembly, the sleeve (2) with the slot forms an expansion portion that expands into the hollow wall (3) and is clamped on the inner side surface of the mounting hole of the hollow wall (3), and the truncated cone portion (12) of the screw rod (1) is clamped on the inner wall of the expansion portion of the sleeve (2); The screw rod (1) is provided with an opening (13) at one end close to the external thread, and a through hole (14) communicating with the opening (13) is provided on the outer wall of the screw rod (1).
2. The anchor bolt according to claim 1, characterized in that: The diameter of the cylindrical portion (11) is greater than or equal to the maximum end face diameter of the truncated cone portion (12).
3. The anchor bolt according to claim 1, characterized in that: The height of the long groove (22) is less than the diameter of the circular hole (21).
4. The anchor bolt according to claim 1, characterized in that: The number of the evenly spaced grooves is 2-4.