Expansion shell type temporary supporting anchor rod
By designing the expansion shell anchor with expansion wedges and tie rods, the problem of traditional anchor installation requiring special tools and anchor head slippage is solved, rapid installation and efficient anchoring are achieved, and construction efficiency is significantly improved.
Patent Information
- Application Number
- CN202421204562.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional shell-swelling anchor rods require special tools during installation, and the shell-swelling anchor head is prone to slip and cannot be fully extended, resulting in poor anchoring performance.
An anchor rod that includes a tube, shelling, expansion wedge, and tie rods is designed. It moves the tie rod and the expansion wedge to move backwards by locking the nut, so that the rising shell and expansion and the friction with the inner wall of the anchor hole to achieve anchor.
The rapid installation and efficient anchoring of anchor rods were realized, and the problem of rising anchor heads was avoided, which significantly improved construction efficiency.
Smart Images
Figure CN222391424U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of anchor rod support, in particular to an expansion shell type temporary support anchor rod. Background Art
[0002] When installing a traditional expansion shell anchor, first insert the rod body with the expansion shell anchor head directly into the bottom of the hole, then use special tools to pre-tighten the rod body, ensure that the top of the anchor head is in close contact with the bottom of the hole and rotate the anchor body to the left, so that the anchor body moves axially relative to the anchor head, and the expansion shell anchor head is expanded to make it in close contact with the hole wall to form friction, thereby fixing the position of the anchor. During the above installation process, not only special tools are needed for installation, but the expansion shell anchor head often slips and rotates synchronously with the anchor body, resulting in the expansion shell anchor head being unable to be fully expanded, and the anchoring performance is greatly reduced. Summary of the invention
[0003] The main purpose of the utility model is to provide a shell-expanding temporary support anchor rod which can be quickly installed and has good anchoring performance.
[0004] To this end, the utility model provides an expansion shell type temporary support anchor rod, including a casing and an expansion shell arranged at the front end of the casing, an expansion wedge is provided in the expansion shell, and a pull rod is provided in the casing to drive the expansion wedge to move backward to open the expansion shell, the front end of the pull rod is fixedly connected to the expansion wedge, and the tail end extends out of the casing and is threadedly connected to a locking nut, and a fixed pad is also fixedly provided at the tail end of the casing, an axially extending anti-rotation groove is provided in the casing, and a slider matching the anti-rotation groove is provided on the pull rod.
[0005] Specifically, the sleeve is composed of two semicircular tubes, a clamp for clamping the two semicircular tubes is provided on the outer side of the sleeve, and an annular groove for positioning the clamp is provided on the outer side of the sleeve.
[0006] Specifically, the expansion shell is composed of a plurality of expansion shell clips, which are evenly distributed along the circumference of the casing, and the inner cavity of the expansion shell is provided with a wedge surface matching the expansion wedge block.
[0007] Specifically, the fixing pad is provided with a threaded hole for the fixing bolt to pass through, the fixing pad is fixedly attached to the hole opening of the anchor hole by the fixing bolt, and a buffer pad is also provided between the fixing pad and the locking nut.
[0008] Specifically, the sleeve and the fixing pad are formed in one piece.
[0009] Compared with the prior art, the utility model has the following beneficial effects: during installation, the anchor rod is inserted into the anchor hole, and the fixing pad is fixed on the end face of the hole mouth, and then the locking nut is tightened to drive the pull rod together with the expansion wedge to move backward, forcing the expansion shell to expand and open to squeeze the inner wall of the anchor hole, forming friction, so that the anchor rod can be anchored, the anchor rod can be installed quickly, and the anchoring performance is good. There will be no problem of slipping of the expansion shell anchor head, and the construction efficiency is greatly improved for the work needs of temporary support. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0011] Figure 1 It is a schematic diagram of an expansion shell type temporary support anchor provided by an embodiment of the utility model;
[0012] Figure 2 This is a schematic diagram of the expansion shell opening provided by the embodiment of the utility model;
[0013] Among them: 1. casing; 2. expansion shell; 3. expansion wedge; 4. pull rod; 5. locking nut; 6. fixed pad; 7. anti-rotation slide groove; 8. slider; 9. clamp; 10. buffer pad; 11. anchor hole. DETAILED DESCRIPTION
[0014] 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 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.
[0015] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0017] See also Figure 1 and Figure 2 A temporary support anchor rod of an expanding shell type comprises a casing 1 and an expanding shell 2 arranged at the front end of the casing 1, an expansion wedge 3 is arranged in the expanding shell 2, and the expanding shell 2 and the expansion wedge 3 together constitute the anchor head of the expanding shell 2, a pull rod 4 is arranged in the casing 1 to drive the expansion wedge 3 to move backward to open the expanding shell 2, the front end of the pull rod 4 is fixedly connected with the expansion wedge 3, and the tail end extends out of the casing 1 and is threadedly connected with a locking nut 5, that is, a connecting external thread is arranged at the tail end of the pull rod 4, and the locking nut 5 is screwed on the connecting external thread, and a fixed pad 6 is also fixedly arranged at the tail end of the casing 1, in order to prevent the pull rod 4 from rotating synchronously when the locking nut 5 rotates, an axially extending anti-rotation slide groove 7 is arranged in the casing 1, and a slider 8 matching the anti-rotation slide groove 7 is arranged on the pull rod 4.
[0018] The anchor installation construction process includes the following steps: 1) Drilling: Drill an anchor hole 11 in the surrounding rock with a drill bit; 2) Insert the anchor into the anchor hole 11, so that the fixed pad 6 is close to the rock wall of the hole mouth of the anchor hole 11, and the fixed pad 6 is fixed to the rock wall with a bolt assembly; 3) Rotate the locking nut 5 to transmit it to the pull rod 4, drive the expansion wedge 3 at the front end of the pull rod 4 to move backward relative to the casing 1, so that the expansion shell 2 moves toward the wall of the anchor hole 11 and contacts with the wall to form friction, thereby realizing anchoring of the anchor; 4) When disassembling, loosen the locking nut 5 in the reverse direction, push the pull rod 4 forward to drive the expansion wedge 3 to separate from the expansion shell 2, and the expansion shell 2 shrinks and separates from the hole wall under the action of its own elastic force, thereby realizing the recovery of the anchor.
[0019] The utility model inserts the anchor rod into the anchor hole 11 and fixes the fixing pad 6 on the end face of the hole mouth, then tightens the locking nut 5, drives the pull rod 4 together with the expansion wedge 3 to move backward, forces the expansion shell 2 to expand and open to squeeze the inner wall of the anchor hole 11, and forms a friction force, so that the position of the anchor rod can be fixed, and the anchor rod can be quickly installed with good anchoring performance. There will be no problem of the anchor head of the expansion shell 2 slipping, and the construction efficiency is greatly improved for the work needs of temporary support.
[0020] See also Figure 1Specifically, in order to facilitate the assembly of the sleeve 1 and the tie rod 4, the sleeve 1 is composed of two semicircular tubes, and a clamp 9 for clamping the two semicircular tubes is provided on the outside of the sleeve 1. An annular mounting groove for positioning the clamp 9 is provided on the outside of the sleeve 1. After the clamp 9 clamps the sleeve 1, the clamp 9 is accommodated in the annular mounting groove. The clamp 9 can be limited by setting the annular mounting groove to prevent its axial movement. By designing the sleeve 1 as a split structure, the assembly of the internal tie rod 4 can be facilitated. In addition, for anchor holes 11 of different depths, the sleeve 1 can be designed as an extended structure, consisting of multiple sections, and each section can be connected by thread. The tie rod 4 and the expansion wedge 3 can adopt an integrated structure, or they can be manufactured separately and then assembled and fixed.
[0021] See also Figure 1 It can be understood that in the actual design, the expansion shell 2 is composed of a multi-petal expansion shell clip. The inner cavity of the expansion shell 2 is provided with a wedge-shaped surface matching the expansion wedge 3, which is designed to cooperate with the wedge-shaped surface to facilitate the expansion wedge 3 to open the expansion shell 2 or withdraw from the expansion shell 2. The multi-petal expansion shell clip is evenly distributed along the circumference of the casing 1 and is fixedly connected to the front end of the casing 1. The expansion shell clip can be formed on the casing 1 in an integrated manner. Of course, it can also be manufactured in parts and fixedly connected to the casing 1 by welding or other methods.
[0022] Specifically, the fixed pad 6 is also composed of two semicircular plates. A center hole coaxial with the sleeve 1 is provided in the center of the fixed pad 6. Threaded holes for fixing bolts to pass through are provided around the fixed pad 6. The fixed pad 6 is fixed to the hole end of the anchor hole 11 by fixing bolts. A buffer pad 10 is also provided between the fixed pad 6 and the locking nut 5. The fixed pad 6 can be fixed to the sleeve 1 in an integral molding manner. Of course, it can also be manufactured in parts and fixedly connected to the sleeve 1 by welding or other methods.
[0023] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values to be exhaustive, the utility model discloses only some numerical values to illustrate the technical solution of the present invention, and the numerical values listed above should not constitute a limitation on the scope of protection of the invention.
[0024] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).
[0025] In addition, the terms used in any technical solution disclosed in the above utility model to indicate positional relationship or shape include the state or shape that is similar, similar or close to it unless otherwise stated. Any component provided by the utility model can be assembled from multiple separate components, or it can be a separate component manufactured by an integrated molding process.
[0026] The above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived from these are still within the scope of protection of the present invention.
Claims
1. An expansion shell type temporary support anchor, characterized in that: The invention comprises a sleeve (1) and an expansion shell (2) arranged at the front end of the sleeve (1), the expansion shell (2) is provided with an expansion wedge (3), the sleeve (1) is provided with a pull rod (4) for driving the expansion wedge (3) to move backward to open the expansion shell (2), the front end of the pull rod (4) is fixedly connected to the expansion wedge (3), the rear end extends out of the sleeve (1) and is threadedly connected to a locking nut (5), the rear end of the sleeve (1) is also provided with a fixed pad (6), the sleeve (1) is provided with an axially extending anti-rotation groove (7), and the pull rod (4) is provided with a slider (8) matching the anti-rotation groove (7).
2. The expansion shell type temporary support anchor according to claim 1 is characterized in that: The sleeve (1) is composed of two semicircular tubes, and a clamp (9) for clamping the two semicircular tubes is provided on the outer side of the sleeve (1).
3. The expansion shell type temporary support anchor according to claim 2 is characterized in that: The clamp (9) is arranged in an annular receiving groove on the outer peripheral wall of the sleeve (1).
4. The expansion shell type temporary support anchor according to claim 1 is characterized in that: The expansion shell (2) is composed of a plurality of expansion shell clips, which are evenly distributed along the circumference of the casing (1). The inner cavity of the expansion shell (2) is a wedge-shaped surface that matches the expansion wedge block (3).
5. The expansion shell type temporary support anchor according to claim 1 is characterized in that: The fixing pad (6) is provided with a threaded hole for the fixing bolt to pass through, the fixing pad (6) is fixed to the opening of the anchor hole (11) by the fixing bolt, and a buffer pad (10) is also provided between the fixing pad and the locking nut (5).
6. The expansion shell type temporary support anchor according to claim 1 is characterized in that: The sleeve (1) and the fixing pad (6) are integrally formed.