Bag type variable-diameter reinforcement cage anchor rod
By designing bladder components and spliced anchor rods that can be spliced end to end, the problem of poor anchoring effect of bladder-type variable-diameter anchor rods at the enlarged ends of anchor holes at different depths is solved, and flexible splicing and overall connectivity of the bladder components are achieved, thereby improving the anchoring effect and the convenience of grouting operations.
Patent Information
- Application Number
- CN202423088904.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-14
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-12-14
AI Technical Summary
The bag portion of the existing bag-type variable diameter anchor rod cannot be flexibly spliced, resulting in poor anchoring effect at the enlarged end of the anchor hole at different depths.
A bag-type variable-diameter steel cage anchor rod was designed, which includes a bag assembly and a spliced anchor rod that can be spliced end to end. The end to end splicing and overall connection of the bag assembly are achieved through the connection of the left and right splicing seats and the top and conical end covers of the bag. Combined with the support of the retractable connecting rod and stirrups, it is ensured that the bag is fully filled with the anchor hole and the expanded end.
The flexible splicing and overall connectivity of the bag components are achieved, and the ends can be expanded for filling according to the anchor holes of different depths, thereby improving the anchoring effect and the convenience of the grouting operation.
Smart Images
Figure CN223344080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bag-type variable-diameter anchor rods, in particular to a bag-type variable-diameter steel cage anchor rod. Background Art
[0002] Anchor support plays a key role in underground engineering fields such as mining and tunnel construction. Traditional anchors are mostly of a single fixed diameter, making them difficult to adapt to complex and changing geological conditions. For example, the anchoring force requirements in soft, fractured strata differ from those in hard, intact rock. This is why the bladder-type variable-diameter anchor has emerged. Its core technology lies in the ability to change the diameter of the anchor body through the expansion and contraction of the bladder. By injecting or withdrawing a specific medium, such as high-pressure cement, from the bladder, the anchor is tightly adhered to the hole wall, effectively improving anchoring force and stability, meeting support needs in different geological conditions, and promoting the development of underground engineering support technology.
[0003] The bag part of the bag-shaped variable diameter anchor rod currently used cannot be flexibly spliced and used. Figure 4 As shown, since the lengths of the anchor hole enlarged end 6 vary during the construction process, when the anchor hole enlarged end 6 is too long, the bag 42 cannot be fully filled, resulting in poor anchoring effect of the anchor rod. Utility Model Content
[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.
[0005] In order to achieve the above-mentioned purpose, the utility model proposes a bag-type variable-diameter steel cage anchor rod, comprising a positioning end plate, a splicing anchor rod, and a bag assembly that can be spliced end to end, wherein the positioning end plate is arranged at the top of the splicing anchor rod, the bag assembly is arranged at the bottom of the splicing anchor rod, the bag assembly includes a bag, and a top end cover and a conical end cover arranged at both ends of the bag, the top end cover is interconnected with the bottom of the splicing anchor rod, and the two ends of the bag are respectively provided with a bag left splicing seat and a bag right splicing seat.
[0006] Furthermore, the bladder is spliced with the top end cover through the left bladder splicing seat, the bladder is connected to the conical end cover through the right bladder splicing seat, and the left bladder splicing seat and the right bladder splicing seat are spliced and adapted to each other.
[0007] Furthermore, a retractable connecting rod is provided inside the bladder, and connecting rod ends are provided at both ends of the connecting rod. The connecting rod ends are respectively connected to the inner walls of the left splicing seat and the right splicing seat of the bladder through spoke rods, and stirrups are provided between the inner and outer walls of the bladder.
[0008] Furthermore, a threaded end cover hole is provided through the middle position of the top end cover, a splicing joint is provided at the bottom end of the splicing anchor rod, and the splicing joint is threadedly adapted to the threaded end cover hole, and a splicing threaded hole is provided at the top end of the splicing anchor rod, and the splicing threaded hole is threadedly adapted to the splicing joint.
[0009] Furthermore, a grouting hole with a hollow structure is provided inside the spliced anchor rod, and a first grouting hole is provided through the top end cover.
[0010] Furthermore, a second slurry emitting hole is formed through the conical end cover.
[0011] Beneficial effects: The utility model provides a bag assembly that can be spliced end to end, and can be spliced and used according to the enlarged end of the anchor hole of different depths. The bag assembly forms a whole after splicing, and the bags are interconnected, which is convenient for grouting operations and can fill the enlarged end of the anchor hole of different depths, thereby improving the anchoring effect of the bag.
[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0014] Figure 1 This is a schematic diagram of the overall structure of a bag-type variable-diameter steel cage anchor rod according to one embodiment of the present utility model;
[0015] Figure 2 1. A cross-sectional view of a bag-type variable-diameter steel cage anchor rod according to one embodiment of the present invention;
[0016] Figure 3 This is a schematic diagram of the splicing principle of a bag-type variable-diameter steel cage anchor rod according to one embodiment of the present utility model;
[0017] Figure 4 The diagram is a schematic diagram of the principle of use of a bag-type variable diameter anchor rod in the prior art.
[0018] In the figure: 1. Positioning end plate; 11. Locking sleeve; 2. Splicing anchor rod; 21. Splicing threaded hole; 22. External thread; 23. Grouting hole; 24. Splicing joint; 3. Top end cover; 31. End cover threaded hole; 32. First grouting hole; 4. Bladder assembly; 41. Bladder left splicing seat; 42. Bladder; 43. Stirrup; 44. Connecting rod; 441. Connecting rod end; 45. Spoke rod; 46. Bladder right splicing; 5. Conical end cover; 51. Second grouting hole; 6. Anchor hole enlargement end; 7. Anchor hole. DETAILED DESCRIPTION
[0019] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0020] The following describes the bag-type variable diameter steel cage anchor rod according to an embodiment of the present invention in conjunction with the accompanying drawings.
[0021] like Figure 1-Figure 4 As shown, the bag-type variable-diameter steel cage anchor rod provided by the embodiment of the present invention includes a positioning end plate 1, a splicing anchor rod 2, and a bag assembly 4 that can be spliced end to end, wherein the positioning end plate 1 is arranged at the top of the splicing anchor rod 2, and the bag assembly 4 is arranged at the bottom of the splicing anchor rod 2.
[0022] The bladder assembly 4 includes a bladder 42, and a top end cap 3 and a conical end cap 5 provided at both ends of the bladder 42. The top end cap 3 is connected to the bottom of the splicing anchor rod 2. The two ends of the bladder 42 are respectively provided with a left bladder splicing seat 41 and a right bladder splicing seat 46. It should be noted that the left bladder splicing seat 41 and the right bladder splicing seat 46 can be a snap-fit or screw-tight splicing structure.
[0023] Specifically, when the bag-type variable-diameter steel cage anchor rod of the present application is used, first, according to the needs of the enlarged end 6 of the anchor hole at different depths, multiple bag assemblies 4 are spliced together end to end through the bag left splicing seat 41 and the bag right splicing seat 46. After the usable length of the enlarged end 6 of the anchor hole is reached, the top of the topmost bag 42 is connected to the top end cover 3, and the bottom of the bottommost bag 42 is connected to the conical end cover 5, and the conical end cover 5 is connected to the spliced anchor rod 2.
[0024] Then the bag assembly 4 is continuously fed into the anchor hole 7, and multiple spliced anchor rods 2 are spliced end to end according to the required depth of the anchor hole 7, until the bag assembly 4 reaches the bottom of the enlarged end 6 of the anchor hole, and the uppermost spliced anchor rod 2 is put on the positioning end plate 1 to fix the top of the spliced anchor rod 2, and then the slurry is injected into the bag assembly 4 through the spliced anchor rod 2 until the slurry fills the bag assembly 4 with the enlarged end 6 of the anchor hole, completing the installation process of the bag-type variable-diameter steel cage anchor rod.
[0025] By setting up a bladder assembly 4 that can be spliced end to end, it can be spliced and used according to the enlarged end 6 of the anchor hole of different depths, and the bladder assembly 4 forms a whole after splicing. The bladders 42 are interconnected, which is convenient for grouting operations and can fill the enlarged end 6 of the anchor hole of different depths, thereby improving the anchoring effect of the bladder 42.
[0026] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, the bladder bag 42 is connected to the top end cap 3 via the bladder bag left splicing seat 41, and the bladder bag 42 is connected to the conical end cap 5 via the bladder bag right splicing seat 46. The bladder bag left splicing seat 41 and the bladder bag right splicing seat 46 are spliced and adapted to each other. This allows multiple bladder bag assemblies 4 to be spliced end to end and used, as well as spliced with the top end cap 3 and the conical end cap 5.
[0027] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, a retractable connecting rod 44 is provided inside the bag 42, and connecting rod ends 441 are provided at both ends of the connecting rod 44. The connecting rod ends 441 are respectively connected to the inner walls of the left splicing seat 41 and the right splicing seat 46 of the bag through the spoke rod 45, and stirrups 43 are provided between the inner and outer walls of the bag 42.
[0028] Specifically, connecting rod 44 supports the left and right bladder splicing seats 41 and 46 at both ends of bladder bag 42 via spoke rods 45, preventing deformation of bladder bag 42. Furthermore, connecting rod 44 is a retractable structure that can adapt to subtle changes in the depth of the enlarged anchor hole end 6, allowing the spliced bladder assembly 4 to completely fill the enlarged anchor hole end 6. Stirrups 43 within bladder bag 42 act as a restraint, preventing the filler inside bladder bag 42 from overfilling and bursting the bladder bag 42.
[0029] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, an end cover threaded hole 31 is provided through the middle position of the top end cover 3, a splicing joint 24 is provided at the bottom end of the splicing anchor rod 2, and the splicing joint 24 is threadedly adapted to the threaded hole, and a splicing threaded hole 21 is provided at the top end of the splicing anchor rod 2, and the splicing threaded hole 21 is threadedly adapted to the splicing joint 24.
[0030] Specifically, the bottommost splicing anchor rod 2 can be connected to the end cover threaded hole 31 of the top end cover 3, and the splicing anchor rods 2 can also be spliced and connected to each other, so as to be used for splicing anchor holes 7 of different depths.
[0031] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, a hollow grouting hole 23 is provided inside the spliced anchor rod 2, a first grouting hole 32 is provided through the top end cover 3, and a second grouting hole 51 is provided through the conical end cover 5.
[0032] Specifically, the spliced anchor rod 2 can inject slurry into the bag 42 through the grouting hole 23 of its internal hollow structure. After the slurry fills the bag 42, the slurry is discharged from the first slurry hole 32 and the second slurry hole 51 respectively. The slurry flows back to fill the enlarged end 6 of the anchor hole, and flows upward to fill the inside of the anchor hole 7, thereby improving the anchoring effect of the bag 42 and the spliced anchor rod 2.
[0033] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, the outside of the spliced anchor rod 2 is provided with an external thread 22, and the inner side of the positioning end plate 1 is provided with a locking sleeve 11, which is threadably adapted to the external thread 22 and is used to thread the positioning end plate 1 and the spliced anchor rod 2 so that the spliced anchor rod 2 at the uppermost end of the anchor hole 7 can be fixed.
[0034] In order to clearly explain the above embodiments, refer to Figure 1-Figure 4 It is shown that when the bag-type variable-diameter steel cage anchor rod of the present application is used: when the bag-type variable-diameter steel cage anchor rod of the present application is used, first, according to the needs of the enlarged end 6 of the anchor hole at different depths, multiple bag components 4 are spliced together end to end through the bag left splicing seat 41 and the bag right splicing seat 46. After the use length of the enlarged end 6 of the anchor hole is reached, the top of the topmost bag 42 is connected to the top end cover 3, and the bottom of the bottommost bag 42 is connected to the conical end cover 5, and the conical end cover 5 is connected to the spliced anchor rod 2.
[0035] Then the bladder assembly 4 is continuously fed into the anchor hole 7, and multiple spliced anchor rods 2 are spliced end to end according to the required depth of the anchor hole 7. After the bladder assembly 4 reaches the bottom of the enlarged end 6 of the anchor hole, the uppermost spliced anchor rod 2 is put on the positioning end plate 1 to fix the top of the spliced anchor rod 2, and then concrete slurry is injected through the grouting hole 23 inside the spliced anchor rod 2. The slurry enters the interior of the bladder assembly 4 along the spliced anchor rod 2, and the slurry fills the bladder assembly 4. The slurry fills the bladder assembly 4, and the bladder 42 expands to fill the enlarged end 6 of the anchor hole.
[0036] After the slurry fills the bag 42, the slurry is discharged from the first slurry hole 32 and the second slurry hole 51 respectively, and the slurry flows back to fill the enlarged end 6 of the anchor hole, and flows upward to fill the inside of the anchor hole 7, thereby improving the anchoring effect of the bag 42 and the spliced anchor rod 2, and completing the installation process of the bag-type variable diameter steel cage anchor rod.
[0037] In summary, the bag-type variable-diameter steel cage anchor rod of the embodiment of the present invention can be spliced and used according to the enlarged end of the anchor hole of different depths by setting a bag component that can be spliced end to end, and the bag components are spliced to form a whole. The bags are interconnected, which is convenient for grouting operations and can fill the enlarged end of the anchor hole of different depths, thereby improving the anchoring effect of the bag.
[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.
Claims
1. A bag-type variable diameter steel cage anchor rod, characterized in that: It comprises a positioning end plate (1), a splicing anchor rod (2), and a bag assembly (4) that can be spliced end to end, wherein the positioning end plate (1) is arranged on the top of the splicing anchor rod (2), and the bag assembly (4) is arranged on the bottom of the splicing anchor rod (2); The bladder assembly (4) comprises a bladder (42), and a top end cover (3) and a conical end cover (5) arranged at both ends of the bladder (42); the top end cover (3) is interconnected with the bottom of the splicing anchor rod (2); and a bladder left splicing seat (41) and a bladder right splicing seat (46) are respectively provided at both ends of the bladder (42).
2. The bag-type variable diameter steel cage anchor rod according to claim 1, characterized in that: The sac bag (42) is spliced with the top end cover (3) via the sac bag left splicing seat (41), the sac bag (42) is connected to the conical end cover (5) via the sac bag right splicing seat (46), and the sac bag left splicing seat (41) and the sac bag right splicing seat (46) are spliced and adapted to each other.
3. The bag-type variable diameter steel cage anchor rod according to claim 2, characterized in that: A retractable connecting rod (44) is provided inside the bag (42), and connecting rod ends (441) are provided at both ends of the connecting rod (44). The connecting rod ends (441) are respectively connected to the inner walls of the left bag splicing seat (41) and the right bag splicing seat (46) through the provision of spoke rods (45); and stirrups (43) are provided between the inner and outer walls of the bag (42).
4. The bag-type variable diameter steel cage anchor rod according to claim 1, characterized in that: An end cover threaded hole (31) is provided through the middle position of the top end cover (3), and a splicing joint (24) is provided at the bottom end of the splicing anchor rod (2), and the splicing joint (24) is threadably matched with the end cover threaded hole (31); A splicing threaded hole (21) is provided at the top end of the splicing anchor rod (2), and the splicing threaded hole (21) is threadably matched with the splicing joint (24).
5. The bag-type variable diameter steel cage anchor rod according to claim 4, characterized in that: A hollow grouting hole (23) is provided inside the spliced anchor rod (2), and a first grouting hole (32) is provided through the top end cover (3).
6. The bag-type variable diameter steel cage anchor rod according to claim 1, characterized in that: The exterior of the spliced anchor rod (2) is provided with an external thread (22), the interior of the positioning end plate (1) is provided with a locking sleeve (11), the locking sleeve (11) is threadably adapted to the external thread (22), and a second grouting hole (51) is provided through the conical end cover (5).