Elastic sheet type anchor rod head
By incorporating elastic elements and anti-slip components in the anchor head, the problems of sliding and slippage of the expansion shell are solved, thus achieving stable installation and connection of the anchor head.
Patent Information
- Application Number
- CN202520114920.X
- 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
During the installation of existing anchor heads, the expansion shell is prone to vertical sliding or slippage, resulting in unstable installation. Furthermore, the expansion shell scrapes against the inner wall of the installation hole, affecting construction.
The anchor head adopts a spring-loaded design, with elastic elements between the expansion shell plates that slide along the inner wall of the expansion shell to enhance friction. The anti-slip part makes close contact with the inner wall of the mounting hole to prevent slippage.
This improved the stability and connection strength of the anchor head within the installation hole, preventing slippage and scraping of the expansion shell and ensuring smooth construction.
Smart Images
Figure CN223880334U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of anchor rod heads, in particular to a spring sheet type 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 and is 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 sheet. The swelling shell sheet 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 sheet to move towards the bottom of the installation hole. During this process, since the sliding track between the swelling shell sheet 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 example, when placing the swelling shell together with the swelling shell sheet into the installation hole, since the direction of the installation hole is not always horizontal, and the matching structure precision of the swelling shell sheet and the swelling shell is low, vertical sliding direction sliding is easy to occur. The swelling shell sheet is easy to slide or even slip off under the action of gravity during installation. In addition, the entire swelling shell sheet is located outside the swelling shell, and is also easy to slide relative to the swelling shell during placement due to the scraping of the inner wall of the installation hole, thereby affecting normal construction. SUMMARY
[0004] In order to solve the above technical problems or partially solve the above technical problems, the present disclosure provides a spring sheet type anchor rod head.
[0005] The present disclosure provides a spring sheet type anchor rod head, comprising:
[0006] a swelling shell, an internal sliding track of the swelling shell is provided; along the insertion direction of the swelling shell, the sliding track gradually moves away from the center of the swelling shell;
[0007] at least two swelling shell sheets, an elastic member is provided between the at least two swelling shell sheets to drive the swelling shell sheets to abut the inner wall of the swelling shell; the swelling shell sheets are slidably matched with the sliding track.
[0008] Optionally, the number of the swelling shell sheets is two.
[0009] Optionally, the elastic member is a V-shaped spring sheet, and the two ends of the V-shaped spring sheet are respectively connected with the two swelling shell sheets.
[0010] Optionally, the internal part of the swelling shell sheet is provided with a stop lever, the stop lever is arranged along the radial direction of the swelling shell, and is used for stopping the V-shaped spring sheet.
[0011] Optionally, the inside of the expanding shell is provided with an internal thread to match the anchor rod thread.
[0012] Optionally, the end of the expanding shell piece away from the bottom of the mounting hole is provided with a baffle, and the side of the baffle away from the bottom of the mounting hole is used to abut against the anchor rod.
[0013] Optionally, the side of the expanding shell piece away from the center of the expanding shell is provided with an anti-skid part.
[0014] Optionally, the anti-skid part is provided with a sliding groove, and the sliding groove is in sliding cooperation with the sliding track.
[0015] Optionally, the cross section of the sliding groove is T-shaped.
[0016] Optionally, the cross section of the expanding shell is annular, and the side of the anti-skid part away from the center of the expanding shell is arc-shaped with a curvature matching that of the expanding shell.
[0017] The technical solution provided by the embodiments of the present disclosure has the following advantages compared with the prior art:
[0018] The elastic piece is arranged between the plurality of expanding shell pieces of the elastic piece type anchor rod head, and under the action of the elastic piece, even when the entire anchor rod head moves towards the inside of the mounting hole, the expanding shell pieces will be tightly abutted against the inner wall of the expanding shell due to the action of the elastic piece, thereby increasing the sliding friction between the expanding shell and the expanding shell pieces, to avoid the risk of relative falling of the expanding shell pieces when the entire anchor rod head is installed towards the inside of the mounting hole; in addition, the expanding shell pieces in the present disclosure are located inside the expanding shell, and when the anchor rod head slides towards the inside of the mounting hole, the expanding shell pieces can be prevented from being scraped against the inner wall of the mounting hole to cause the sliding off of the expanding shell pieces. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings incorporated into the specification and forming a part thereof illustrate 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 solutions 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 as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.
[0021] Fig. 1 The structural schematic diagram of the elastic piece type anchor rod head described in the embodiments of the present disclosure;
[0022] Fig. 2 The cross-sectional view of the elastic piece type anchor rod head described in the embodiments of the present disclosure;
[0023] Fig. 3A schematic view of a shell expansion piece structure in a split anchor head according to an embodiment of the present disclosure.
[0024] wherein,
[0025] 1, shell expansion piece; 2, shell expansion piece; 20, sliding groove; 21, anti-skid part; 210, wedge surface; 211, fault; 22, blocking piece; 23, main body; 24, first flap; 25, second flap; 3, V-shaped spring piece; 4, anchor rod. DETAILED DESCRIPTION
[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the solutions 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.
[0027] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other different manners from those described herein; obviously, the embodiments described in the specification are only a part of the embodiments of the present disclosure, and not all the embodiments.
[0028] 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" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.
[0029] 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.
[0030] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of 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 a "or" relationship between the front and rear associated objects.
[0032] 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).
[0033] 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 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.
[0034] 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 broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of 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.
[0035] Referring to Figs. 1 to 3 As shown in the drawings, the anchor head provided by the embodiment of the present application comprises: a swelling shell 1, the inside of the swelling shell 1 is provided with a sliding track; along the axial direction of the swelling shell 1 and in the direction pointing to the bottom of the mounting hole, the sliding track gradually moves away from the center of the swelling shell 1; at least two swelling shell pieces 2, elastic members are arranged between the swelling shell pieces 2 to drive the swelling shell pieces 2 to abut against the inner wall of the swelling shell 1; the swelling shell pieces 2 are in sliding fit with the sliding track.
[0036] The swelling shell 1 has a sleeve structure as a whole, is hollow inside and is used for accommodating the swelling shell 1 and the head of the anchor rod 4. The upper half of the swelling shell 1, i.e. the end of the swelling shell 1 that is towards the bottom of the mounting hole when the swelling shell 1 is mounted inside the mounting hole, is flared. The part of the swelling shell 1 closer to the bottom of the mounting hole is farther away from the center of the swelling shell 1, so that the sliding track arranged inside the swelling shell 1 is in an inclined state, so as to ensure that the swelling shell pieces 2 are gradually in an "expanded" state during the process of sliding out of the swelling shell 1, thereby being tightly supported on the inner wall of the mounting hole and achieving locking with the mounting hole.
[0037] The number of swelling shell pieces 2 is at least two. In actual situations, the more the number of swelling shell pieces 2, the more stable the locking of the entire swelling shell 1 with the mounting hole. Generally, the number of swelling shell pieces 2 is usually two or three.
[0038] The shell expansion piece 2 is arranged inside the shell 1 through sliding tracks inside the shell 1.
[0039] The elastic member is arranged between the shell expansion pieces 2 and has elasticity, so that the shell expansion pieces 2 are away from each other, i.e. the shell expansion pieces 2 have a tendency to move away from the center of the shell expansion piece 2.
[0040] In the present disclosure, the elastic member is arranged between the shell expansion pieces 2, so that even when the whole anchor rod 4 head moves towards the inside of the installation hole, the shell expansion piece 2 will be tightly in contact with the inner wall of the shell 1 due to the action of the elastic member, thereby increasing the sliding friction between the shell 1 and the shell expansion piece 2, to avoid the risk of the shell expansion piece 2 falling relatively when the whole anchor rod 4 head is installed towards the inside of the installation hole; in addition, the shell expansion piece 2 in the present disclosure is located inside the shell 1, so that when the anchor rod 4 head slides towards the inside of the installation hole, the shell expansion piece 2 can be prevented from being scraped with the inner wall of the installation hole to cause the shell expansion piece 2 to slip off.
[0041] In some embodiments, the number of shell expansion pieces 2 is two.
[0042] Specifically, in the present embodiment, the number of shell expansion pieces 2 is two, and the two shell expansion pieces 2 are oppositely arranged inside the shell 1.
[0043] In some embodiments, the elastic member is a V-shaped elastic piece 3, and the two ends of the V-shaped elastic piece 3 are respectively connected with the two shell expansion pieces 2.
[0044] For the case of two shell expansion pieces 2, the elastic member is a V-shaped elastic piece 3, and the two ends of the V-shaped elastic piece 3 are respectively connected with the two shell expansion pieces 2 on the two sides towards the center of the shell 1, so that the two shell expansion pieces 2 have a tendency to move away from each other, thereby tightly abutting against the inner wall of the shell 1 to avoid slipping off.
[0045] In some embodiments, the inside of the shell expansion piece 2 is provided with a stop lever arranged along the radial direction of the shell 1, for stopping the V-shaped elastic piece 3.
[0046] Under the action of the V-shaped elastic piece 3, the two shell expansion pieces 2 can be contracted together or in an open state; in actual situation, during the installation of the shell expansion piece 2 and the shell 1, the two contracted shell expansion pieces 2 are inserted into the inside of the shell 1 from the end far away from the bottom of the installation hole, and then gradually inserted out from the end of the shell 1 close to the bottom of the installation hole; in this process, in order to avoid the shell expansion piece 2 from being completely inserted out of the shell 1, a stop lever is arranged inside the shell 1, and the whole stop lever is arranged along the radial direction of the shell 1, and the two ends of the stop lever are respectively connected with the inner wall of the shell 1; when the shell expansion piece 2 slides towards the bottom of the installation hole, the stop lever will abut against the side of the V-shaped elastic piece 3 towards the bottom of the installation hole, thereby limiting the shell expansion piece 2 from slipping off.
[0047] In some embodiments, the inner part of the expansion shell 1 is internally threaded to threadedly mate with the anchor rod 4.
[0048] The inner part of the expansion shell 1 is internally threaded away from the bottom of the mounting hole for connecting with the anchor rod 4.
[0049] In some embodiments, the end of the expansion shell piece 2 away from the bottom of the mounting hole is provided with a stopper 22, and the side of the stopper 22 away from the bottom of the mounting hole is used to abut against the head of the anchor rod 4.
[0050] When the anchor rod 4 rotates relative to the expansion shell 1, it will abut against the end of the expansion shell piece 2 close to the anchor rod 4. In order to ensure the stability during abutment, the stopper 22 is arranged at the end of the expansion shell piece 2 close to the anchor rod 4, so that the anchor rod 4 can directly abut against the stopper 22 when abutting against the expansion shell piece 2, thereby increasing the stability during abutment.
[0051] In some embodiments, the side of the expansion shell piece 2 away from the center of the expansion shell 1 is provided with an anti-skid part 21.
[0052] The side of the expansion shell piece 2 away from the center of the expansion shell 1 is provided with the anti-skid part 21, so as to ensure the friction between the expansion shell piece 2 and the inner wall of the mounting hole, and prevent the expansion shell piece 2 from slipping on the inner wall of the mounting hole.
[0053] In actual cases, the anti-skid part 21 is a structure such as anti-skid lines. Specifically, the anti-skid part 21 includes a plurality of faults 211 and wedge surfaces 210 arranged one by one and staggered along the axial direction of the expansion shell piece, and the wedge surfaces 210 gradually approach the center of the expansion shell 1 along the direction in which the expansion shell 1 is inserted into the mounting hole, so that the faults 211 have a certain height in the direction away from the center of the expansion shell 1, thereby increasing the anti-skid ability of the anti-skid part 21.
[0054] In some embodiments, the side of the expansion shell piece 2 away from the center of the expansion shell 1 is provided with a sliding groove 20, and the sliding groove 20 is in sliding cooperation with a sliding rail.
[0055] The inner wall of the expansion shell 1 is provided with a sliding rail, and correspondingly, the side of the expansion shell piece 2 away from the center of the expansion shell 1 is provided with a sliding groove 20, and the sliding groove 20 is in sliding cooperation with the sliding rail.
[0056] In some embodiments, the cross section of the sliding groove 20 is T-shaped.
[0057] Specifically, the cross section of the sliding rail and the sliding groove 20 are both T-shaped, thereby avoiding the sliding off of the expansion shell piece 2 and the expansion shell 1 during sliding.
[0058] In actual situation, the structure of the expansion shell piece 2 is not a simple piece structure, specifically, the expansion shell piece 2 comprises a main body 23, a first flange 24 and a second flange 25, wherein the first flange 24 is arranged on the side of the main body 23 away from the center of the expansion shell 1, and the number of the first flange 24 is two, which are respectively arranged on a group of opposite side edges of the main body 23 along the sliding direction of the main body 23; the two first flanges 24 and the main body 23 form a concave structure, thereby increasing the structural strength of the entire expansion shell piece 2.
[0059] Further, the number of the second flange 25 is also two, and the second flange 25 is arranged on the edge of the first flange 25 away from the main body 23, and the two second flanges 25 extend oppositely to form a closed trend, and it should be noted that the second flange 25 has a certain thickness, and thus the main body 23, the first flange 24 and the second flange 25 jointly form a sliding groove 20 with a T-shaped cross section.
[0060] In the working process, the expansion shell piece 2 gradually slides to the inside of the installation hole under the action of the anchor rod until abutting against the inner wall of the installation hole, but the end of the expansion shell piece 2 close to the bottom of the installation hole abuts against the inner wall of the installation hole first, so that the expansion shell piece 2 will be subjected to a large force to bend during the slow sliding process, however, the special structure of the expansion shell piece 2 in the present disclosure undoubtedly increases the bending resistance of the entire expansion shell piece 2 to ensure the strength requirement of the expansion shell piece 2 in the sliding process and further ensure the connection stability of the anchor rod head and the installation hole.
[0061] In addition, the sliding groove 20 with a T shape has a certain “elasticity” to a certain extent, which is not the elasticity in the plastic deformation (flexible material such as rubber), but a kind of “sinking” trend of the second flange 25 into the cavity of the groove when the second flange 25 is attached to the inner wall of the expansion shell 1, and the reaction force brought by the trend can form a certain extrusion between the anti-skid part 21 and the inner wall of the expansion shell 1, thereby ensuring the friction between the expansion shell piece 2 and the expansion shell 1 as a whole and avoiding the loosening and slipping of the expansion shell piece 2 relative to the expansion shell 1.
[0062] Particularly, the anti-skid part 21 is arranged on the side of the second flange 25 away from the center of the expansion shell 1.
[0063] In the present embodiment, since the sliding groove is of a T-shaped cross section, there is a certain gap between the two second flanges 25, which makes the irregular protrusions in the inner wall of the installation hole can be clamped in the gap between the two second flanges 25 when the expansion shell piece 2 interacts with the inner wall of the installation hole, thereby increasing the friction degree between the expansion shell piece 2 and the inner wall of the installation hole to a certain extent and further increasing the connection strength of the anchor rod head and the installation hole.
[0064] In some embodiments, the cross section of the shell 1 is annular, and the side of the anti-skid part 21 facing away from the center of the shell 1 is arc-shaped with a curvature matching that of the shell 1.
[0065] Since the shell 1 is in a sleeve structure with an annular cross section, the side of the anti-skid part 21 facing the inner wall of the shell 1 is arc-shaped with the same curvature as that of the inner wall of the shell 1 to ensure the fit between them, thereby ensuring a certain friction between the shell piece 2 and the shell 1 and avoiding loosening and slipping of the shell piece 2 relative to the shell 1.
[0066] It should be particularly noted that no matter how the friction between the shell piece 2 and the shell 1 is increased, the shell piece 2 can easily slide out relative to the shell piece 2 towards the bottom of the mounting hole when it is abutted by the anchor rod 4; in addition, the increase of the friction only provides the shell piece 2 with anti-skid protection under the condition of no external force, and will not affect the normal use of the entire anchor head.
[0067] The above description is only 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 range consistent with the principles and novel features disclosed herein.
Claims
1. A spring tab rock bolt head, characterized in that, The utility model relates to a kind of anchor expansion shell, including: Rising shell (1), the inside of the rising shell (1) is equipped with sliding rail;Along the direction of insertion of the rising shell (1), the sliding rail gradually away from the center of the rising shell (1); At least two rising shell pieces (2), elastic member is equipped between the at least two rising shell pieces (2), to drive the rising shell piece (2) and abut the inner wall of the rising shell (1);The rising shell piece (2) is slidably connected with the sliding rail.
2. A rock bolt head according to claim 1, characterised in that The number of the rising shell piece (2) is two.
3. A rock bolt head according to claim 2, c h a r a c t e r i s e d in that The elastic member is V-shaped elastic piece (3), and both ends of the V-shaped elastic piece (3) are connected with two rising shell pieces (2) respectively.
4. A rock bolt head according to claim 3, characterised in that, The inside of the rising shell piece (2) is equipped with stop lever, and the stop lever is arranged along the radial direction of the rising shell (1), for stopping the V-shaped elastic piece (3).
5. A rock bolt head according to claim 1, c h a r a c t e r i s e d in that The inside of the rising shell (1) is equipped with internal thread, to be threadedly connected with anchor rod (4).
6. A rock bolt head as claimed in claim 5, characterised in that, The end of the rising shell piece (2) away from the bottom of mounting hole is equipped with baffle (22), and the side of the baffle (22) away from the bottom of mounting hole is used for abutting with the anchor rod (4).
7. A rock bolt head according to claim 1, c h a r a c t e r i s e d in that The side of the rising shell piece (2) away from the center of the rising shell (1) is equipped with anti-skid part (21).
8. A rock bolt head according to claim 7, characterised in that, The anti-skid part (21) is equipped with sliding groove (20), and the sliding groove (20) is slidably connected with the sliding rail.
9. A spring tab rock bolt head according to claim 8, characterised in that, The cross section of the sliding groove (20) is T-shaped.
10. A rock bolt head as claimed in claim 9, characterised in that, The cross section of the rising shell (1) is annular, and the side of the anti-skid part (21) away from the center of the rising shell (1) is arc-shaped, and the curvature is matched with the rising shell (1).