Anti-slip anchor rod head
By designing an inclined groove and a limiting block structure at the anchor head, the problem of the expansion shell slipping out of the soft and loose hole was solved, thus achieving stable fixing of the anchor.
Patent Information
- Application Number
- CN202520114869.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing anchor bolt heads are prone to the problem of expansion plates falling off in soft and loose installation holes, leading to anchor bolt locking failure.
An anti-slip anchor head was designed, which uses an inclined groove and a stop on the outer peripheral wall of the expansion shell. A limiting block is provided on the expansion shell. The cooperation between the limiting block and the stop prevents the expansion shell from slipping and, under the action of the groove, it firmly abuts against the inner wall of the mounting hole.
It effectively prevents the expansion shell from slipping during the anchor bolt contact process, ensuring the stability of the connection between the anchor bolt and the installation hole, and enhancing the anchor bolt fixing effect.
Smart Images
Figure CN223880333U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of anchor rod, in particular to an anti-slip anchor rod head. BACKGROUND
[0002] An anchor rod is an engineering structure used for ground reinforcement and support. It is usually made of high-strength materials such as steel, used to form a firm support and fixation in soil or rock to increase the load-bearing capacity or stability of the soil or rock.
[0003] The connection of the anchor rod with the soil or rock is usually achieved through an anchor rod head, which includes a swelling shell and a swelling shell piece. The swelling shell piece is slidably mounted on the swelling shell from one end that abuts the bottom of the installation hole. During use, the anchor rod moves towards the bottom of the installation hole, causing the swelling shell piece to move towards the bottom of the installation hole. During this process, since the sliding track between the swelling shell piece and the swelling shell is wedge-shaped, the swelling shell gradually expands to tightly abut the peripheral wall of the installation hole, thereby achieving the locking of the anchor rod. However, the anchor rod of this structure still has some drawbacks. For the inner wall of the installation hole with soft and loose texture, the swelling shell piece may be squeezed into the inner wall of the installation hole during the sliding and expanding process, which leads to a great risk of the swelling shell piece completely falling off the swelling shell, resulting in the locking failure of the anchor rod. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above technical problems or partially solve the above technical problems, the present disclosure provides an anti-slip anchor rod head.
[0005] The present disclosure provides an anti-slip anchor rod head, comprising:
[0006] a swelling shell, at least two sliding grooves are provided on the outer peripheral wall of the swelling shell at intervals, the end of the sliding groove away from the bottom of the installation hole is inclined to the axis of the swelling shell, the end of the swelling shell away from the bottom of the installation hole is provided with an opening, and the end of the swelling shell away from the opening is provided with a stop portion;
[0007] a swelling shell piece, which is in sliding connection with the sliding groove, and is provided with a limiting block on the swelling shell piece to abut the stop portion;
[0008] a cover connected to the end of the opening on the swelling shell.
[0009] Optionally, a first guide wall is provided on the outer peripheral wall of the swelling shell corresponding to the sliding groove, and the inclination degree of the first guide wall is consistent with the inclination degree of the sliding groove.
[0010] A second guide wall is provided on the side of the swelling shell piece facing the axis of the swelling shell, and the second guide wall is in sliding cooperation with the first guide wall.
[0011] Optionally, the sliding groove is a T-shaped groove; the second guide wall is provided with a T-shaped guide rail, and the T-shaped guide rail is in sliding fit with the T-shaped groove.
[0012] Optionally, the limiting block is arranged on one side of the T-shaped guide rail facing the expansion shell axis.
[0013] Optionally, the limiting blocks on different expansion shell pieces are arranged in a staggered manner along the expansion shell axis.
[0014] Optionally, the end wall of the expansion shell provided with the opening is provided with a sleeve groove, and the cover is in sleeve fit with the sleeve groove.
[0015] Optionally, the inner wall of the expansion shell is provided with a screw thread, and the screw thread is used in cooperation with the anchor rod.
[0016] Optionally, the side of the expansion shell piece away from the expansion shell is provided with an anti-skid pattern.
[0017] The technical scheme provided by the embodiments of the present disclosure has the following advantages compared with the prior art:
[0018] The anti-slip anchor rod head provided by the present disclosure is under the action of the limiting block and the stop portion, and the expansion shell piece slides towards the bottom of the mounting hole under the abutment of the anchor rod. Meanwhile, under the action of the sliding groove with a certain slope, the expansion shell piece gradually moves away from the axis of the expansion shell, so as to abut against the inner wall of the mounting hole firmly, thereby realizing the fixation of the anchor rod head and further realizing the fixation of the anchor rod. The abutment and cooperation of the limiting block and the stop portion prevent the expansion shell piece from slipping out of the expansion shell from the end of the expansion shell close to the mounting hole during the abutment of the anchor rod, thereby ensuring the connection stability of the anchor rod and the mounting hole. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.
[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of these drawings.
[0021] Figure 1 The structural schematic diagram of the anti-slip anchor rod head described in the embodiments of the present disclosure;
[0022] Figure 2 The explosion view of the state that the expansion shell piece completely separates from the expansion shell in the anti-slip anchor rod head described in the embodiments of the present disclosure;
[0023] Figure 3The exploded view of the anti-slip anchor rod head in the expanding shell piece is not completely separated from the expanding shell state;
[0024] Figure 4 The expanding shell structure diagram of the anti-slip anchor rod head is described in the embodiments of the present disclosure.
[0025] Wherein,
[0026] 1, expanding shell; 10, T-shaped groove; 11, stop; 12, first guide wall; 13, sleeve groove; 2, expanding shell piece; 20, T-shaped guide rail; 21, limit block; 22, second guide wall; 23, anti-skid pattern; 3, cover. DETAILED DESCRIPTION
[0027] In order to enable the above-mentioned purposes, features and advantages of the present disclosure to be more clearly understood, the schemes of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0028] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other different ways from those described herein; obviously, the embodiments in the description are only part of the embodiments of the present disclosure, not all the embodiments.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "include" and "have" in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.
[0030] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.
[0031] In this paper, the reference to "embodiments" means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.
[0032] In the description of the embodiments of the present application, the term "and / or" is only to describe the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are an "or" relationship.
[0033] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).
[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0035] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0036] Referring to Figures 1 to 4 As shown in the drawings, the anchor head provided by the embodiment of the present application comprises: a swelling shell 1, at least two sliding grooves are provided on the outer peripheral wall of the swelling shell 1 at intervals, the end of the sliding groove away from the bottom of the mounting hole is inclined to the axis of the swelling shell 1, the end of the swelling shell 1 away from the bottom of the mounting hole is provided with an opening, and the end of the swelling shell 1 away from the opening is provided with a stop portion 11; a swelling shell piece 2 is connected with the sliding groove, and a limiting block 21 is arranged on the swelling shell piece 2 to abut against the stop portion 11; a cover 3 is connected to the end of the opening of the swelling shell 1.
[0037] The mounting hole referred to in the present disclosure generally refers to the hole reserved on the wall, and can also be the hole on certain building prefabricated boards, which are used for mounting the anchor head to fix the anchor rod.
[0038] The expansion shell 1 is in a columnar shape, and a columnar cavity is arranged in the expansion shell 1, and the columnar cavity is open at an end of the expansion shell 1 away from the bottom of the mounting hole, so as to insert the anchor rod.
[0039] The end of the expansion shell 1 close to the bottom of the mounting hole is in a solid shape, and the side of the solid part away from the bottom of the mounting hole is the stop part 11.
[0040] The end of the expansion shell 1 close to the bottom of the mounting hole is provided with a sliding groove, and two sliding grooves are arranged along the circumferential wall of the expansion shell 1, of course, a plurality of sliding grooves can also be arranged in other embodiments; in some embodiments, the sliding grooves are uniformly arranged to ensure that the expansion shell piece 2 generates a relatively uniform force on the expansion shell 1.
[0041] The length direction of the sliding groove on the expansion shell 1 is consistent with the length direction of the expansion shell 1, and has a certain slope, specifically, the end of the sliding groove away from the bottom of the mounting hole is closer to the axis of the expansion shell 1 than the other end, so that in the process of the expansion shell piece 2 sliding in the sliding groove towards the bottom of the mounting hole, the expansion shell piece 2 as a whole will gradually move away from the axis of the expansion shell 1, so that the outer circumferential dimension of the entire anchor rod head gradually increases, that is, the "expansion" state is formed, so that the expansion shell piece 2 is tightly attached to the inner wall of the mounting hole, and the fixation of the anchor rod is realized.
[0042] The limiting block 21 is arranged on the expansion shell piece 2 to prevent the expansion shell piece 2 from directly sliding out of the expansion shell 1 when sliding in the direction of the bottom of the mounting hole, specifically, when the expansion shell piece 2 slides in the direction of the bottom of the mounting hole, the limiting block 21 will abut against the stop part 11 in the expansion shell 1 to limit the continuous sliding of the expansion shell piece 2, thereby preventing the expansion shell piece 2 from sliding out, and therefore, an opening is arranged at the end of the expansion shell 1 away from the bottom of the mounting hole to allow the expansion shell piece 2 to slide into the expansion shell 1 to cooperate with the sliding groove.
[0043] At the same time, in order to ensure that the expansion shell piece 2 slides out of the preset opening in the event of an accident, the cover 3 is arranged at the end of the expansion shell 1 away from the bottom of the mounting hole to block the opening to prevent the expansion shell piece 2 from sliding out.
[0044] Under the action of the limiting block 21 and the stop part 11, the expansion shell piece 2 slides towards the bottom of the mounting hole under the abutment of the anchor rod, and under the action of the sliding groove with a certain slope, the expansion shell piece 2 gradually moves away from the axis of the expansion shell 1 to tightly abut against the inner wall of the mounting hole, thereby realizing the fixation of the anchor rod head and further realizing the fixation of the anchor rod; the abutment and cooperation of the limiting block 21 and the stop part 11 prevent the expansion shell piece 2 from sliding out of the end of the expansion shell 1 close to the mounting hole during the abutment of the anchor rod, thereby ensuring the stability of the connection between the anchor rod and the mounting hole.
[0045] In some embodiments, a first guide wall 12 is provided on the outer peripheral wall of the expansion shell 1 corresponding to the sliding groove, and the inclination of the first guide wall 12 is consistent with the inclination of the sliding groove; a second guide wall 22 is provided on the side of the expansion shell 2 facing the axis of the expansion shell 1, and the second guide wall 22 slides in cooperation with the first guide wall 12.
[0046] During the sliding process, the expansion shell 1 is supported not only by the sliding groove on the expansion shell 1, but also by the outer peripheral wall of the expansion shell 1, namely the first guide wall 12 corresponding to the sliding groove on the outer peripheral wall of the expansion shell 1. In actual practice, since the interior of the expansion shell 1 is a cavity, the first guide wall 12 is the cross-section formed by cutting off the outer peripheral wall of the expansion shell 1 tangentially. Figure 4 As shown, the first guide wall 12 has the same slope as the slide groove to ensure the smooth sliding of the entire expansion shell 2; correspondingly, a second guide wall 22 is provided on the expansion shell 2. During the sliding process, the first guide wall 12 and the second guide wall 22 abut against each other and slide relative to each other synchronously; in reality, the second guide wall 22 is a side wall in the expansion shell 2, specifically it can be a side wall in the expansion shell 2 facing the axis of the expansion shell 1.
[0047] Under the action of the first guide wall 12 and the second guide wall 22, the expansion shell 2 is more supported by the expansion shell 1 when sliding relative to the expansion shell 1, and the sliding process of the two will be more stable. In addition, since the contact between the first guide wall 12 and the second guide wall 22 increases the contact area between the expansion shell 1 and the expansion shell 2, the expansion shell 2 will gradually be subjected to greater and greater friction when sliding back, thereby increasing the connection strength and stability between the anchor head and the mounting hole to a certain extent.
[0048] In some embodiments, the slide is a T-shaped groove 10; a T-shaped guide rail 20 is provided on the second guide wall 22, and the T-shaped guide rail 20 slides in conjunction with the T-shaped groove 10.
[0049] Before the expansion shell 1 and the expansion shell piece 2 are completely separated, the expansion shell 1 and the expansion shell piece 2 should not have any relative displacement in other directions except for relative movement along the sliding direction. Otherwise, the risk of the expansion shell 1 and the expansion shell piece 2 separating will be greatly increased. Therefore, in this embodiment, the slide is a T-shaped groove 10, and a T-shaped guide rail 20 with a T-shaped cross section is provided on the second guide wall 22. Through the sliding cooperation of the T-shaped guide rail 20 and the T-shaped groove 10, it is ensured that the expansion shell piece 2 and the expansion shell 1 can only be separated in the axial direction, thereby increasing the stability of the connection between the two.
[0050] In some embodiments, the limiting block 21 is disposed on the side of the T-shaped guide rail 20 facing the axis of the expansion shell 1.
[0051] The limiting block 21 is specifically arranged at the end of the T-shaped guide rail 20 away from the bottom of the mounting hole. When the expansion shell piece 2 gradually slides towards the bottom of the mounting hole under the action of the anchor rod, the distance between the limiting block 21 and the stop portion 11 gradually decreases. It should be noted that the limiting block 21 in the expansion shell piece 2 does not always abut against the stop portion 11. If the side wall of the expansion shell piece 2 away from the axis of the expansion shell 1 is completely abutted against the inner wall of the mounting hole during the sliding process, the expansion shell piece 2 will no longer slide towards the inside of the mounting hole, that is, the limiting block 21 will no longer abut against the stop portion 11. To some extent, the arrangement of the limiting block 21 and the stop portion 11 plays a role similar to an insurance to avoid the expansion shell piece 2 from directly sliding off the expansion shell 1 due to accidental reasons such as loose texture of the inner wall of the mounting hole.
[0052] In some embodiments, the limiting blocks 21 on different expansion shell pieces 2 are arranged in axial misalignment along the expansion shell 1.
[0053] The different expansion shell pieces 2 are all subjected to the abutting action of the anchor rod when sliding along the respective corresponding sliding grooves. Therefore, the sliding of each expansion shell piece 2 is synchronous, and the sliding groove has a certain slope, which leads to the fact that the farther the limiting block 21 in each expansion shell piece 2 is from the end of the expansion shell 1 away from the bottom of the mounting hole, the greater the risk of interference. Therefore, in this embodiment, the limiting blocks 21 on each expansion shell piece 2 are misaligned in the axial direction of the expansion shell 1 to ensure that even when the expansion shell pieces 2 are moving synchronously, the limiting blocks 21 always have a certain spacing in the axial direction, thereby avoiding the phenomenon of mutual interference. Of course, the axial misalignment of the limiting blocks 21 is based on the position of the final expansion shell piece 2 after being stopped by the stop portion 11 as much as possible.
[0054] In some embodiments, the expansion shell 1 is provided with a sleeve groove 13 on the outer wall of the open end, and the cover 3 is sleeved and matched with the sleeve groove 13.
[0055] The expansion shell piece 2 provided in the present disclosure slides into the opening away from the bottom of the mounting hole of the expansion shell 1. In order to avoid the phenomenon of the expansion shell piece 2 sliding off along the original path, the sleeve groove 13 is arranged on the open end of the expansion shell 1. In actual situations, that is, a stepped groove annular groove is arranged on the outer peripheral wall of the expansion shell 1, so that the cover 3 does not affect the original diameter of the expansion shell 1 when it is sleeved on the expansion shell 1, avoiding the size of the cover 3 being considered in the matching of the expansion shell 1 and the mounting hole.
[0056] In some embodiments, the inner wall of the expansion shell 1 is provided with a thread, and the thread is used to cooperate with the anchor rod.
[0057] The anchor rod rotates in the expansion shell 1, and at the same time, under the cooperation with the thread on the inner wall of the expansion shell 1, converts the rotating motion into the motion of abutting against the expansion shell piece 2 in the axial direction of the anchor rod, so that the expansion shell piece 2 slides to abut against the inner wall of the mounting hole.
[0058] In some embodiments, the side of the shell 2 facing away from the shell 1 is provided with anti-skid lines 23.
[0059] In order to ensure the stability of the abutment between the shell 2 and the inner wall of the mounting hole, the side of the shell 2 facing away from the shell 1, i.e. the side facing the inner wall of the mounting hole, is provided with anti-skid lines 23 to increase the friction between the two to prevent slipping; in actual implementation, the lines of the anti-skid lines 23 can be perpendicular to the axial direction of the shell 2, and specifically can be annular lines in several turns.
[0060] The above description is merely a specific implementation of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A type of anti-slip anchor head, characterized in that, include: The expansion shell (1) has at least two sliding grooves spaced apart on its outer peripheral wall. The end of the sliding groove away from the bottom of the mounting hole is inclined toward the axis of the expansion shell (1). The end of the expansion shell (1) away from the bottom of the mounting hole is provided with an opening. The end of the expansion shell (1) away from the opening is provided with a stop (11). The expansion shell (2) is slidably connected to the groove, and the expansion shell (2) is provided with a limiting block (21) to abut against the stop part (11); A cover (3) is attached to one end of the opening on the expansion shell (1).
2. The anti-slip anchor head according to claim 1, characterized in that, The outer peripheral wall of the expansion shell (1) is provided with a first guide wall (12) corresponding to the sliding groove, and the inclination degree of the first guide wall (12) is consistent with the inclination degree of the sliding groove; The expansion shell plate (2) is provided with a second guide wall (22) on one side facing the axis of the expansion shell (1), and the second guide wall (22) slides in cooperation with the first guide wall (12).
3. The anti-slip anchor head according to claim 2, characterized in that, The groove is a T-shaped groove (10); the second guide wall (22) is provided with a T-shaped guide rail (20), and the T-shaped guide rail (20) slides in cooperation with the T-shaped groove (10).
4. The anti-slip anchor head according to claim 3, characterized in that, The limiting block (21) is located on the side of the T-shaped guide rail (20) facing the axis of the expansion shell (1).
5. The anti-slip anchor head according to claim 4, characterized in that, The limiting blocks (21) on the different expansion shell pieces (2) are offset along the axial direction of the expansion shell (1).
6. The anti-slip anchor head according to claim 1, characterized in that, The expansion shell (1) has a sleeve groove (13) on the outer wall of the end with the opening, and the cover (3) is fitted into the sleeve groove (13).
7. The anti-slip anchor head according to claim 1, characterized in that, The inner wall of the expansion shell (1) is provided with threads, which are used to cooperate with the anchor rod.
8. The anti-slip anchor head according to claim 1, characterized in that, The expansion shell (2) has anti-slip texture (23) on the side facing away from the expansion shell (1).