Improved enlarged head bag type anchor rod and construction method thereof

Abstract

This invention discloses an improved enlarged-head bladder-type anchor bolt, comprising: a rod body, with a guide cone fixedly connected to the bottom end of the rod body, and a triggering component installed on the guide cone; a self-centering mechanism, including an elastic centering frame fixedly sleeved at the bottom of the rod body, a grouting pipe and an venting pipe fixedly connected to the top end of the elastic centering frame, the bottom ends of the grouting pipe extending into the elastic centering frame, with the bottom end of the grouting pipe located below the bottom end of the venting pipe; an elastic locking component installed at the bottom end of the elastic centering frame; a triggering component for triggering the elastic locking component; a limiting component fixedly connected inside the elastic centering frame; a locking post fixedly connected to the inner wall of the bottom end of the elastic centering frame; the limiting component and the locking post being detachably connected; a shaped bladder, located inside the elastic centering frame and fixedly connected to the elastic centering frame; and an upper fixing component, detachably connected to the top of the rod body. This invention enables the anchor bolt to self-center after being inserted into the bottom of the hole, thereby achieving a better anchoring effect.

Description

Technical Field

[0001] This invention relates to the field of capsule anchor technology, and in particular to an improved enlarged-head capsule anchor and its construction method. Background Technology

[0002] The difference between a bladder-type anchor bolt and a regular anchor bolt is that the bladder-type anchor bolt has a bladder at the bottom. After the anchor is lowered, grout is injected into the bladder using grouting equipment. After the grout inside the bladder solidifies, it forms an anchor block. Compared with traditional anchor bolts, bladder-type anchor bolts have a better anchoring effect.

[0003] However, current bladder-type anchor bolts do not have a self-centering structure and function. After anchoring, the anchor bolt is mainly centered by the guide cone at the bottom of the anchor bolt and the judgment of the workers. Therefore, the anchor bolt is prone to deflection after construction, resulting in unsatisfactory anchoring effect. At the same time, the existing bladder-type anchor bolts do not have the function of auxiliary support during grouting, which leads to instability of the anchor bolt during grouting and causes the anchor bolt to deflection easily during grouting.

[0004] Therefore, there is an urgent need to design an improved enlarged head bladder anchor bolt and its construction method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an improved enlarged head-type anchor bolt, comprising:

[0006] A rod body, with a guide cone fixed to its bottom end, and a triggering component installed on the guide cone;

[0007] The self-centering mechanism includes an elastic centering frame fixedly sleeved at the bottom of the rod body. A grouting pipe and an exhaust pipe are fixedly connected to the top of the elastic centering frame. The bottom ends of the grouting pipe and the exhaust pipe extend into the elastic centering frame, with the bottom end of the grouting pipe located below the bottom end of the exhaust pipe. An elastic locking component is installed at the bottom end of the elastic centering frame. A triggering component is used to trigger the elastic locking component. A limiting component is fixedly connected inside the elastic centering frame. A locking post is fixedly connected to the inner wall of the bottom end of the elastic centering frame. The limiting component and the locking post are detachably connected.

[0008] A shaped capsule is located within the elastic centering frame and is fixedly connected to the elastic centering frame. The bottom end of the grouting pipe, the bottom end of the vent pipe, the locking post, and the limiting component are all located within the shaped capsule.

[0009] An upper fixing component is detachably connected to the top of the rod.

[0010] Preferably, the elastic centering frame includes an outer sleeve fixedly fitted to the bottom of the rod body, a fixing block fixedly fitted to the top of the outer sleeve, the grouting pipe and the venting pipe fixedly passing through the fixing block, a sliding block provided below the fixing block, the sliding block slidably fitted onto the outer sleeve, a locking post fixedly connected to the top of the sliding block, an elastic locking assembly installed inside the sliding block, the elastic locking assembly being detachably connected to the outer sleeve, a plurality of hinges hinged to the outside of the fixing block, the ends of the hinges hinged to the side wall of the sliding block, the irregularly shaped capsule located within the space enclosed by the outer sleeve, the fixing block, the sliding block, and the hinges, both ends of the irregularly shaped capsule being fixedly connected to the fixing block and the sliding block respectively, the side wall of the irregularly shaped capsule being fixedly connected to the hinges, a second spring provided between the fixing block and the sliding block, both ends of the second spring being fixedly connected to the fixing block and the sliding block respectively, and the second spring being located within the irregularly shaped capsule.

[0011] Preferably, the hinge includes a plurality of first connecting rods hinged to the outer wall of the fixed block, the ends of the first connecting rods are hinged to second connecting rods, the ends of the second connecting rods are hinged to the outer wall of the sliding block, the irregularly shaped capsule is located in the space enclosed by the outer shell, the fixed block, the sliding block, the first connecting rods and the second connecting rods, and the sidewall of the irregularly shaped capsule is fixed to the first connecting rods.

[0012] Preferably, the elastic locking assembly includes a first locking block with a first inclined surface at its bottom end. A first slide rail is provided inside the sliding block, and a first sliding plate is slidably connected inside the first slide rail. The first locking block is fixed to the side of the first sliding plate near the outer casing. A third spring is fixed to the side of the first sliding plate away from the outer casing, and the end of the third spring is fixed to the inner wall of the first slide rail. An insertion hole is provided on the side of the first slide rail near the outer casing. The insertion hole is located inside the sliding block and is adapted to the triggering assembly. The end of the first locking block near the outer casing passes through the insertion hole and extends out of the sliding block, and the end of the first locking block near the outer casing is locked to the outer casing.

[0013] Preferably, the triggering assembly includes a trigger rod, the socket is adapted to the trigger rod, the trigger rod is located on the side of the outer sleeve away from the rod body, the trigger rod passes through the guide cone, and the trigger rod slides with the guide cone. A limiting groove is provided on the outer side of the trigger rod, the limiting groove is opened in the guide cone, a limiting slider slides in the limiting groove, and the limiting slider is fixedly connected to the trigger rod.

[0014] Preferably, the limiting component includes a limiting block fixedly sleeved on the outer casing, the limiting block being located between the fixed block and the sliding block, the limiting block being located within the irregularly shaped capsule, a second slide rail being provided within the limiting block, a second sliding plate being slidably connected within the second slide rail, a second locking block being fixedly connected to the side of the second sliding plate near the outer casing, a second inclined surface being provided at the bottom end of the second locking block, a fourth spring being fixedly connected to the side of the second sliding plate away from the outer casing, the end of the fourth spring being fixedly connected to the inner wall of the second slide rail, a slot being provided on the side of the second slide rail near the outer casing, the slot being provided on the limiting block, the end of the second locking block extending into the slot, and the locking post engaging with the second locking block.

[0015] Preferably, a steel cage is provided between the fixing block and the limiting block, with both ends of the steel cage being fixedly connected to the fixing block and the limiting block respectively, and the second spring being sleeved on the outside of the steel cage, which is located inside the irregular bladder.

[0016] Preferably, the upper fixing component includes a waterstop plate, a first spring is provided at the top of the waterstop plate, a pad is provided at the top of the first spring, a nut is fixedly connected to the top of the pad, the first spring abuts against both the waterstop plate and the pad, the waterstop plate, the pad, the first spring and the nut are all sleeved on the rod body, and the nut is screwed to the rod body.

[0017] Preferably, the irregularly shaped capsule is a wavy conical structure after grouting, with the smaller diameter end of the conical structure located at the top and the larger diameter end located at the bottom.

[0018] The construction method for the improved enlarged-head bladder anchor bolt involves using the aforementioned improved enlarged-head bladder anchor bolt.

[0019] S1. First, drill a hole at the location where the anchor needs to be placed, and then use a reamer to enlarge the bottom of the drilled hole.

[0020] S2. Connect the grouting pipe to the grouting equipment, connect the exhaust pipe to the long hose, and then lower the anchor rod into the drilled hole. Trigger the elastic snap-fit ​​component through the trigger component, and the elastic centering frame expands to abut against the inner wall of the hole to achieve self-centering.

[0021] S3. Grout is injected into the grouting pipe through the grouting equipment. The grout enters the irregular-shaped bladder through the grouting pipe until the grout is discharged from the top of the long hose and then the grouting is stopped.

[0022] S4. After the grout has completely solidified after standing for a period of time, the upper fixing component is installed on the rod to complete the construction.

[0023] The present invention discloses the following technical effects:

[0024] This invention, by setting an elastic centering frame, allows the anchor rod to automatically rise and abut against the inner wall of the hole after anchoring, enabling the anchor rod to achieve self-centering. This solves the problem that existing bladder-type anchor rods do not have a self-centering function and are prone to deflection during construction, thus effectively ensuring the quality of anchoring. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A cross-sectional view of a modified enlarged head-type anchor bolt;

[0027] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0028] Figure 3 for Figure 1 Enlarged view of B in the middle;

[0029] Figure 4 for Figure 1 Enlarged view of C;

[0030] Figure 5 A schematic diagram of the structure when the improved enlarged head-type anchor bolt is supported;

[0031] Figure 6 for Figure 5 Enlarged view of D;

[0032] Figure 7 This is a schematic diagram of the steel reinforcement cage.

[0033] The components are as follows: 1. Rod body; 2. Nut; 3. Washer plate; 4. First spring; 5. Waterstop plate; 6. Fixing block; 7. Grouting pipe; 8. Exhaust pipe; 9. Irregular bladder body; 10. First connecting rod; 11. Second connecting rod; 12. Outer shell; 13. Reinforcing cage; 14. Second spring; 15. Limiting block; 16. Sliding block; 17. Guide cone; 18. Trigger rod; 19. First locking block; 20. First sliding plate; 21. Third spring; 22. Fourth spring; 23. Second sliding plate; 24. Second locking block; 25. Locking post; 26. Limiting slider. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely partial embodiments of the present invention, and not embodiments of the entire invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] This invention provides an improved enlarged head capsule type anchor bolt, comprising:

[0037] In order to enable smoother anchoring, a guide cone 17 is fixed to the bottom end of the rod body 1, and a triggering component is installed on the guide cone 17;

[0038] The self-centering mechanism includes an elastic centering frame fixedly sleeved at the bottom of the rod 1. A grouting pipe 7 and an exhaust pipe 8 are fixedly connected to the top of the elastic centering frame. The bottom ends of the grouting pipe 7 and the exhaust pipe 8 extend into the elastic centering frame, with the bottom end of the grouting pipe 7 located below the bottom end of the exhaust pipe 8. An elastic snap-fit ​​component is installed at the bottom of the elastic centering frame. A trigger component is used to trigger the elastic snap-fit ​​component. A limit component is fixedly connected inside the elastic centering frame. A locking post 25 is fixedly connected to the inner wall of the bottom end of the elastic centering frame. The limit component and the locking post 25 are detachably connected.

[0039] The irregularly shaped capsule 9 is located within the elastic centering frame and is fixedly connected to the elastic centering frame. The bottom end of the grouting pipe 7, the bottom end of the exhaust pipe 8, the locking post 25, and the limiting component are all located within the irregularly shaped capsule 9.

[0040] An upper fixing component is detachably connected to the top of the rod 1.

[0041] Furthermore, the elastic centering frame includes an outer sleeve 12 fixedly fitted at the bottom of the rod 1, a fixing block 6 fixedly fitted at the top of the outer sleeve 12, the grouting pipe 7 and the venting pipe 8 fixedly passing through the fixing block 6, a sliding block 16 provided below the fixing block 6, the sliding block 16 slidably fitted on the outer sleeve 12, the locking post 25 fixedly connected to the top of the sliding block 16, the elastic locking assembly installed inside the sliding block 16, the elastic locking assembly being detachably connected to the outer sleeve 12, and several hinges hinged to the outside of the fixing block 6. The hinge member has its end hinged to the side wall of the sliding block 16. The irregularly shaped capsule 9 is located within the space enclosed by the outer shell 12, the fixing block 6, the sliding block 16, and the hinge member. Both ends of the irregularly shaped capsule 9 are fixedly connected to the fixing block 6 and the sliding block 16, respectively. The side wall of the irregularly shaped capsule 9 is fixedly connected to the hinge member. A second spring 14 is provided between the fixing block 6 and the sliding block 16. Both ends of the second spring 14 are fixedly connected to the fixing block 6 and the sliding block 16, respectively, and the second spring 14 is located inside the irregularly shaped capsule 9.

[0042] Furthermore, the second spring 14 is sleeved on the outer sleeve 12.

[0043] Furthermore, the hinge includes a plurality of first connecting rods 10 hinged to the outer wall of the fixed block 6, the ends of the first connecting rods 10 are hinged to second connecting rods 11, the ends of the second connecting rods 11 are hinged to the outer wall of the sliding block 16, the irregularly shaped capsule 9 is located in the space enclosed by the outer shell 12, the fixed block 6, the sliding block 16, the first connecting rods 10 and the second connecting rods 11, and the side wall of the irregularly shaped capsule 9 is fixedly connected to the first connecting rods 10.

[0044] Furthermore, several of the first connecting rods 10 are arranged at equal intervals along the circumference.

[0045] Furthermore, the elastic locking assembly includes a first locking block 19, the bottom end of which has a first inclined surface. A first slide rail is provided inside the sliding block 16, and a first sliding plate 20 is slidably connected inside the first slide rail. The first locking block 19 is fixed to the side of the first sliding plate 20 near the outer casing 12. A third spring 21 is fixed to the side of the first sliding plate 20 away from the outer casing 12. The end of the third spring 21 is fixed to the inner wall of the first slide rail. An insertion hole is provided on the side of the first slide rail near the outer casing 12. The insertion hole is opened inside the sliding block 16 and is adapted to the triggering assembly. The end of the first locking block 19 near the outer casing 12 passes through the insertion hole and extends out of the sliding block 16, and the end of the first locking block 19 near the outer casing 12 is locked to the outer casing 12.

[0046] Furthermore, a groove is provided on the bottom outer wall of the outer casing 12, and the first locking block 19 engages with the groove.

[0047] Furthermore, the trigger assembly includes a trigger rod 18, the insertion hole is adapted to the trigger rod 18, the trigger rod 18 is located on the side of the outer sleeve 12 away from the rod body 1, the trigger rod 18 passes through the guide cone 17, and the trigger rod 18 is slidably connected to the guide cone 17. A limiting groove is provided on the outer side of the trigger rod 18, the limiting groove is opened in the guide cone 17, and a limiting slider 26 is slidably connected in the limiting groove. The limiting slider 26 is fixedly connected to the trigger rod 18.

[0048] When the first locking block 19 engages with the outer casing 12, the second spring 14 is in a stretched state, and the angle between the first connecting rod 10 and the second connecting rod 11 is an obtuse angle. When the anchor rod enters the drilled hole bottom, the trigger rod 18 first contacts the hole bottom surface. At this time, the force continues to move the anchor rod downward, which will cause the trigger rod 18 to move upward. When the trigger rod 18 is inserted into the insertion hole and contacts the first locking block 19, since the first locking block 19 has a first inclined surface at its bottom end, the upward movement of the trigger rod 18 will push the first locking block 19 to move deeper into the first slide, thereby disengaging the first locking block 19 from the groove on the outer casing 12. At this time, the second spring 14 is in a stretched state. Under the action, the sliding block 16 slides upward along the outer sleeve 12. During this process, since the first connecting rod 10 is hinged to the fixed block 6 and the second connecting rod 11 is hinged to the first connecting rod 10 and the sliding block 16, the included angle between the first connecting rod 10 and the second connecting rod 11 gradually decreases. When the locking post 25 is connected to the limiting component, the hinge of the first connecting rod 10 and the second connecting rod 11 abuts against the inner wall of the hole. Since there are several first connecting rods 10 and the second connecting rod 11, the anchor rod can be self-centered. At the same time, the hinge of the first connecting rod 10 and the second connecting rod 11 abuts against the inner wall of the hole, which can also prevent the anchor rod from tilting during the grouting process and ensure the stability of the anchor rod during the grouting process.

[0049] Furthermore, in order to make anchoring easier, when the first locking block 19 engages with the groove, the outer diameter of the elastic centering frame is not greater than the major diameter of the guide cone 17.

[0050] Furthermore, the limiting component includes a limiting block 15 fixedly sleeved on the outer casing 12. The limiting block 15 is located between the fixing block 6 and the sliding block 16, and is located inside the irregularly shaped capsule 9. A second slide is provided inside the limiting block 15, and a second sliding plate 23 is slidably connected in the second slide. A second locking block 24 is fixedly connected to the side of the second sliding plate 23 near the outer casing 12. A second inclined surface is provided at the bottom end of the second locking block 24. A fourth spring 22 is fixedly connected to the side of the second sliding plate 23 away from the outer casing 12. The end of the fourth spring 22 is fixedly connected to the inner wall of the second slide. A slot is provided on the side of the second slide near the outer casing 12. The slot is opened on the limiting block 15. The end of the second locking block 24 extends into the slot, and the locking post 25 engages with the second locking block 24.

[0051] When the sliding block 16 moves upward under the force of the second spring 14, the locking post 25 is inserted into the slot. Since the second locking block 24 has a second inclined surface at its bottom, the locking post 25 pushes the second locking block 24 into the depth of the second slide when it moves upward. When the protrusion on the top side wall of the locking post 25 passes the second locking block 24, the second locking block 24 pops out again under the force of the fourth spring 22 and engages with the protrusion on the top side wall of the locking post 25. By setting the limiting component to engage with the locking post 25, it can prevent the sliding block 16 from moving downward under the gravity of the grout during the grouting process, thus affecting the final anchor block forming effect and ensuring that the solidified anchor block is the required anchor block.

[0052] Furthermore, in order to enhance the strength of the solidified concrete block and improve the anchoring effect of the anchor rod, a steel cage 13 is provided between the fixing block 6 and the limiting block 15. The two ends of the steel cage 13 are fixed to the fixing block 6 and the limiting block 15 respectively. The second spring 14 is sleeved on the outside of the steel cage 13. The steel cage 13 is located inside the irregular bladder 9.

[0053] Furthermore, the upper fixing component includes a waterstop plate 5, a first spring 4 is provided at the top of the waterstop plate 5, a pad 3 is provided at the top of the first spring 4, and a nut 2 is fixedly connected to the top of the pad 3. The first spring 4 abuts against both the waterstop plate 5 and the pad 3. The waterstop plate 5, the pad 3, the first spring 4, and the nut 2 are all sleeved on the rod body 1, and the nut 2 is screwed to the rod body 1.

[0054] Furthermore, after grouting, the irregularly shaped capsule 9 has a wavy conical structure, with the smaller diameter end of the conical structure located at the top and the larger diameter end located at the bottom.

[0055] After the irregularly shaped capsule 9 is injected into the concrete, it forms a wavy conical structure. It can form a self-locking cone after the concrete solidifies. When the anchor rod is under tension, the conical capsule squeezes the sides of the cone to achieve self-locking, making the anchor rod more secure.

[0056] The construction method for the improved enlarged-head bladder anchor bolt involves using the aforementioned improved enlarged-head bladder anchor bolt.

[0057] S1. First, drill a hole at the location where the anchor needs to be placed, and then use a reamer to enlarge the bottom of the drilled hole.

[0058] During the first drilling, the diameter of the hole is matched with the major diameter of the guide cone 17.

[0059] S2. Connect the grouting pipe 7 to the grouting equipment, connect the exhaust pipe 8 to the long hose, and then lower the anchor rod into the drilled hole. Trigger the elastic snap-fit ​​component through the trigger component, and the elastic centering frame expands to abut against the inner wall of the hole to achieve self-centering.

[0060] S3. Grout is injected into the grouting pipe 7 through the grouting equipment. The grout enters the irregular bladder 9 through the grouting pipe 7 until the grout is discharged from the top of the long hose and then the grouting is stopped.

[0061] S4. After the grout has completely solidified after standing for a period of time, the upper fixing component is installed on the rod 1 to complete the construction.

[0062] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0063] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. Improved expanded head cased anchor, characterized in that, include: A rod (1) is fixed to the bottom end of the rod (1), and a triggering component is installed on the guide cone (17); The self-centering mechanism includes an elastic centering frame fixedly sleeved at the bottom of the rod (1). A grouting pipe (7) and an exhaust pipe (8) are fixedly connected to the top of the elastic centering frame. The bottom ends of the grouting pipe (7) and the exhaust pipe (8) extend into the elastic centering frame, and the bottom end of the grouting pipe (7) is located below the bottom end of the exhaust pipe (8). An elastic snap-fit ​​component is installed at the bottom end of the elastic centering frame. A trigger component is used to trigger the elastic snap-fit ​​component. A limit component is fixedly connected inside the elastic centering frame. A locking post (25) is fixedly connected to the inner wall of the bottom end of the elastic centering frame. The limit component is detachably connected to the locking post (25). A shaped capsule (9) is located within the elastic centering frame and is fixedly connected to the elastic centering frame. The bottom end of the grouting pipe (7), the bottom end of the exhaust pipe (8), the locking post (25) and the limiting component are all located within the shaped capsule (9). Upper fixing component, which is detachably connected to the top of the rod (1); The elastic centering frame includes an outer sleeve (12) fixedly fitted at the bottom of the rod (1), a fixing block (6) fixedly fitted at the top of the outer sleeve (12), the grouting pipe (7) and the exhaust pipe (8) fixedly passing through the fixing block (6), a sliding block (16) provided below the fixing block (6), the sliding block (16) slidably fitted on the outer sleeve (12), the locking post (25) fixedly connected to the top of the sliding block (16), the elastic locking assembly installed inside the sliding block (16), the elastic locking assembly detachably connected to the outer sleeve (12), and several hinges hinged to the outside of the fixing block (6). The end of the hinge is hinged to the side wall of the sliding block (16). The irregularly shaped capsule (9) is located in the space enclosed by the outer shell (12), the fixed block (6), the sliding block (16), and the hinge. The two ends of the irregularly shaped capsule (9) are fixed to the fixed block (6) and the sliding block (16) respectively. The side wall of the irregularly shaped capsule (9) is fixed to the hinge. A second spring (14) is provided between the fixed block (6) and the sliding block (16). The two ends of the second spring (14) are fixed to the fixed block (6) and the sliding block (16) respectively, and the second spring (14) is located inside the irregularly shaped capsule (9). The elastic snap-fit ​​assembly includes a first snap-fit ​​block (19), the bottom end of which has a first inclined surface. A first slide rail is provided in the sliding block (16), and a first slide plate (20) is slidably connected in the first slide rail. The first snap-fit ​​block (19) is fixed to the side of the first slide plate (20) near the outer casing (12). A third spring (21) is fixed to the side of the first slide plate (20) away from the outer casing (12). The end of the third spring (21) is fixed to the inner wall of the first slide rail. An insertion hole is provided on the side of the first slide rail near the outer casing (12). The insertion hole is opened in the sliding block (16) and is adapted to the trigger assembly. One end of the first snap-fit ​​block (19) near the outer casing (12) passes through the insertion hole and extends out of the sliding block (16). The end of the first snap-fit ​​block (19) near the outer casing (12) is snap-fitted to the outer casing (12). The triggering assembly includes a trigger rod (18), the socket is adapted to the trigger rod (18), the trigger rod (18) is located on the side of the outer sleeve (12) away from the rod body (1), the trigger rod (18) passes through the guide cone (17), and the trigger rod (18) slides with the guide cone (17).

2. The improved enlarged head bladder type anchor bolt according to claim 1, characterized in that: The hinge includes a plurality of first connecting rods (10) hinged to the outer wall of the fixed block (6), the end of the first connecting rod (10) is hinged to a second connecting rod (11), the end of the second connecting rod (11) is hinged to the outer wall of the sliding block (16), the irregular bladder (9) is located in the space enclosed by the outer shell (12), the fixed block (6), the sliding block (16), the first connecting rod (10) and the second connecting rod (11), and the side wall of the irregular bladder (9) is fixed to the first connecting rod (10).

3. The improved enlarged head bladder type anchor bolt according to claim 1, characterized in that: A limiting groove is provided on the outside of the trigger rod (18). The limiting groove is opened in the guide cone (17). A limiting slider (26) slides in the limiting groove and is fixedly connected to the trigger rod (18).

4. The improved enlarged head bladder type anchor bolt according to claim 1, characterized in that: The limiting component includes a limiting block (15) fixedly sleeved on the outer casing (12). The limiting block (15) is located between the fixed block (6) and the sliding block (16). The limiting block (15) is located inside the irregular bladder (9). A second slide is provided inside the limiting block (15). A second slide plate (23) is slidably connected inside the second slide. A second locking block (24) is fixedly connected to the side of the second slide plate (23) near the outer casing (12). A second inclined surface is provided at the bottom end of the second locking block (24). A fourth spring (22) is fixedly connected to the side of the second slide plate (23) away from the outer casing (12). The end of the fourth spring (22) is fixedly connected to the inner wall of the second slide. A slot is provided on the side of the second slide near the outer casing (12). The slot is opened on the limiting block (15). The end of the second locking block (24) extends into the slot. The locking post (25) engages with the second locking block (24).

5. The improved enlarged head bladder type anchor bolt according to claim 4, characterized in that: A steel cage (13) is provided between the fixing block (6) and the limiting block (15). The two ends of the steel cage (13) are fixed to the fixing block (6) and the limiting block (15) respectively. The second spring (14) is sleeved on the outside of the steel cage (13). The steel cage (13) is located inside the irregular bladder (9).

6. The improved enlarged head bladder type anchor bolt according to claim 1, characterized in that: The upper fixing component includes a waterstop plate (5), a first spring (4) is provided at the top of the waterstop plate (5), a pad (3) is provided at the top of the first spring (4), and a nut (2) is fixedly connected to the top of the pad (3). The first spring (4) abuts against the waterstop plate (5) and the pad (3). The waterstop plate (5), the pad (3), the first spring (4), and the nut (2) are all sleeved on the rod body (1), and the nut (2) is screwed to the rod body (1).

7. The improved enlarged head bladder type anchor bolt according to claim 1, characterized in that: The irregular capsule (9) has a wavy conical structure after grouting, with the small diameter end of the conical structure located at the top and the large diameter end of the conical structure located at the bottom.

8. A construction method for a modified enlarged-head bladder anchor bolt, using the modified enlarged-head bladder anchor bolt as described in claim 1, characterized in that: S1. First, drill a hole at the location where the anchor needs to be placed, and then use a reamer to enlarge the bottom of the drilled hole. S2. Connect the grouting pipe (7) to the grouting equipment, connect the exhaust pipe (8) to the long hose, and then lower the anchor rod into the drilled hole. Trigger the elastic snap-fit ​​component through the trigger component, and the elastic centering frame expands to abut against the inner wall of the hole to achieve self-centering. S3. Grout is injected into the grouting pipe (7) through the grouting equipment. The grout enters the irregular bladder (9) through the grouting pipe (7) until the grout is discharged from the top of the long hose and then the grouting is stopped. S4. After the grout has completely solidified after standing for a period of time, the upper fixing component is installed on the rod (1) to complete the construction.

Images