Improved Integrated Double-Bag Expansive Anchor and Process Method

Abstract

The present invention discloses an improved integrated double - capsule expanding bolt and a process method, including: a main body mechanism and an expanding mechanism. The main body mechanism includes a top plate and a bottom plate. A sleeve is fixedly connected between the top plate and the bottom plate. An outer capsule is fixedly installed on the outer wall of the sleeve, and an inner capsule communicating with each other is arranged inside the outer capsule. The expanding mechanism includes a rotating cylinder and a plurality of expanding rods. A steel bar is arranged inside the rotating cylinder. The bottom end of the steel bar extends out of the rotating cylinder and is detachably connected to the bottom end of the rotating cylinder through a fixing component. A sliding ring is slidably connected to the outer wall of the rotating cylinder. The plurality of expanding rods are circumferentially arranged inside the inner capsule, and the bottom ends of the expanding rods are inclined towards the outer capsule. The bottom ends of the expanding rods are hinged to the inner wall of the inner capsule. The top ends of the plurality of expanding rods are hinged with a connecting component. The present invention can improve the unfolding effect of the inner capsule, and further expand the bottom of the outer capsule. By improving the double - capsule structure, the slurry flow effect between the inner capsule and the outer capsule is improved, the shape of the capsule body is made uniform, and the anchoring performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of anchoring, and particularly to an improved integrated double-bag expanding anchor rod and a process method thereof. Background Art

[0002] With the increasing intensity and depth of the development of underground engineering, deep foundation pit support has become a difficult problem restricting the efficient and safe construction of high-rise buildings. Anchor rods have been widely used in water conservancy and hydropower, industrial and civil construction, transportation, municipal engineering and other projects.

[0003] The double-bag expanding anchor rod belongs to one of the anchor rods. When in use, cement slurry is injected into the inner bag through a high-pressure pump and then overflows into the outer bag. After the bag expands, a cement solid body of the expanding section is formed under the extrusion of the surrounding soil layer. Therefore, the double-bag expanding anchor rod not only resists buoyancy through the side wall friction resistance of its expanding section and its adhesive force with the surrounding soil, but also resists buoyancy through the end resistance provided by the compression of the end of the expanding section.

[0004] However, when the existing double-bag expanding anchor rod is actually used, the inner bag may not be fully unfolded during the grouting process, so that the bottom of the outer bag cannot be unfolded, resulting in the outer wall of the inner bag being attached to the inner wall of the outer bag, affecting the slurry flow between the inner bag and the outer bag, and easily resulting in a still relatively small volume of the enlarged head on the obtained anchor rod and low anchoring performance. Summary of the Invention

[0005] The purpose of the present invention is to provide an improved integrated double-bag expanding anchor rod and a process method thereof to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the present invention provides the following solutions: The present invention provides an improved integrated double-bag expanding anchor rod, including:

[0007] A main body mechanism, the main body mechanism includes a top plate and a bottom plate, a sleeve is fixedly connected between the top plate and the bottom plate, an outer bag is fixedly installed on the outer wall of the sleeve, an inner bag is arranged in the outer bag and is connected in communication, and the inner bag is fixedly installed on the outer wall of the sleeve;

[0008] An expanding mechanism, the expanding mechanism includes a rotating cylinder and a plurality of expanding rods;

[0009] The rotating cylinder is rotatably connected in the sleeve, a steel bar is arranged in the rotating cylinder, the bottom end of the steel bar extends out of the rotating cylinder and is detachably connected to the bottom end of the rotating cylinder through a fixing component, and a sliding ring is slidably connected to the outer wall of the rotating cylinder;

[0010] A plurality of the expansion rods are circumferentially arranged inside the inner capsule, and the bottom ends of the expansion rods are inclined towards the outer capsule. The bottom ends of the expansion rods are hinged to the inner wall of the inner capsule. The top ends of the plurality of expansion rods are hinged with a connection assembly. The connection assembly is slidably connected to the side wall of the sleeve, and one end of the connection assembly away from the expansion rod is fixedly connected to the outer wall of the sliding ring.

[0011] Preferably, a grouting pipe is fixedly connected to the top plate. The grouting pipe sequentially penetrates through the top plate, the outer capsule and the inner capsule and is communicated with the inner cavity of the inner capsule. An exhaust pipe is fixedly connected to the top plate. The exhaust pipe penetrates through the top plate and the outer capsule and is communicated with the inner cavity of the outer capsule.

[0012] Preferably, a plurality of slurry passing holes are formed in the side wall of the top of the inner capsule. The inner capsule and the outer capsule are communicated through the plurality of slurry passing holes.

[0013] Preferably, through holes are formed in the centers of the top plate and the bottom plate. Bearings are fixedly installed in the through holes. The outer walls of both ends of the rotating cylinder are fixedly connected to the inner rings of the two bearings respectively.

[0014] Preferably, the fixing assembly includes an anchoring nut. The anchoring nut is detachably connected to the bottom end of the steel bar extending out of the rotating cylinder. One end of the anchoring nut contacts the bottom end of the rotating cylinder. The other end of the anchoring nut is detachably connected with a sealing plate. The sealing plate is detachably connected to the bottom end of the rotating cylinder through a plurality of fixing bolts. A plurality of inserting rods are fixedly connected to the end face of the sealing plate close to the anchoring nut. A plurality of inserting slots are formed in the end face of the anchoring nut close to the sealing plate. The inserting rods and the inserting slots are arranged in one-to-one correspondence and are inserted.

[0015] Preferably, the connection assembly includes a plurality of chutes circumferentially formed in the side wall of the sleeve. The chutes are vertically arranged. A support plate is slidably connected in the chutes. One end of the support plate extends into the inner cavity of the inner capsule and is provided with a first hinge seat. The top ends of the plurality of expansion rods are arranged in one-to-one correspondence with the plurality of first hinge seats and are hinged. The other end of the support plate is fixedly connected to the outer wall of the sliding ring.

[0016] Preferably, a second hinge seat is hinged to one end of the expansion rod away from the first hinge seat. The second hinge seat is fixedly connected to the inner wall of the inner capsule.

[0017] Preferably, a first connection ring and a second connection ring are fixedly sleeved on the outer wall of the sleeve. The first connection ring and the second connection ring are respectively located at two ends of the sliding groove and inside the inner cavity of the inner capsule. A corrugated pipe is fixedly connected between the first connection ring and the second connection ring. The first hinge seat is fixedly connected to the outer wall of the corrugated pipe, and the support plate is fixedly connected to the inner wall of the corrugated pipe. The first hinge seat and the support plate are on the same axis.

[0018] Preferably, a threaded groove is formed on the outer wall of the bottom of the rotating cylinder, and the inner wall of the sliding ring is threadedly connected to the threaded groove.

[0019] Improved integrated double-bag type expanding anchor rod process method:

[0020] Step 1: Open an anchor hole through an external drilling device;

[0021] Step 2: Assemble the double-bag type expanding anchor rod;

[0022] Step 3: Insert the double-bag type expanding anchor rod into the anchor hole;

[0023] Step 4: Rotate the steel bar rod to expand the expansion mechanism, and grout through the grouting pipe.

[0024] The present invention discloses the following technical effects: The steel bar rod is connected and fixed to the rotating cylinder through the fixing component, so that rotating the steel bar rod drives the rotating cylinder to rotate synchronously, and the position of the rotating cylinder is fixed by the top plate and the bottom plate. Thus, before grouting when the device is inserted into the anchor hole, rotating the steel bar rod causes the rotating cylinder to rotate, making the sliding ring slide downward along the outer wall of the rotating cylinder, and driving the connection component to move synchronously on the sleeve, thereby driving a plurality of expansion rods, causing the plurality of expansion rods to displace and expand the inner capsule, and fully expanding the bottom of the inner capsule. First, the ductility of the volume of the enlarged head is improved, and the anchoring effect is improved. Second, after the bottom of the inner capsule is fully expanded, when grouting into the inner capsule, the slurry can better fill the inner capsule, and then expand the bottom of the outer capsule, making the outer capsule form a cone shape, avoiding the outer capsule from fitting with the inner capsule and affecting the slurry flow. That is, the flow effect of the slurry entering the outer capsule through the inner capsule when the inner capsule is filled with slurry can be improved, and then the shape of the capsule formed by the inner capsule and the outer capsule is made uniform, and the inside of the capsule is filled densely, so that the overall double-bag type expanding anchor rod can bear large-load tensioning. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 Schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is Figure 1 Partial enlarged view of A in

[0028] Figure 3 is Figure 1 Partial enlarged view of B in

[0029] Figure 4 is Figure 1 Partial enlarged view of C in

[0030] Figure 5 Flow chart of the process method of the present invention;

[0031] Among them, 1. Top plate; 2. Bottom plate; 3. Sleeve; 4. Outer capsule; 5. Inner capsule; 6. Rotating cylinder; 7. Expansion rod; 8. Steel bar rod; 9. Sliding ring; 10. Grouting pipe; 11. Exhaust pipe; 12. Grout passing hole; 13. Bearing; 14. Anchor nut; 15. Sealing plate; 16. Insert rod; 17. Insert slot; 18. Slide groove; 19. Support plate; 20. First hinge seat; 21. Second hinge seat; 22. First connection ring; 23. Second connection ring; 24. Bellows; 25. Fixed bolt; 26. Guide head; 27. Thread groove. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Referring to Figures 1-5 , the present invention provides an improved integrated double-capsule body expanding anchor, including:

[0035] Main body mechanism, the main body mechanism includes a top plate 1 and a bottom plate 2. A sleeve 3 is fixedly connected between the top plate 1 and the bottom plate 2. An outer capsule 4 is fixedly installed on the outer wall of the sleeve 3. An inner capsule 5 communicating with each other is arranged in the outer capsule 4, and the inner capsule 5 is fixedly installed on the outer wall of the sleeve 3;

[0036] Expansion mechanism, the expansion mechanism includes a rotating cylinder 6 and a plurality of expansion rods 7;

[0037] The rotating cylinder 6 is rotatably connected inside the sleeve 3. A steel bar rod 8 is arranged inside the rotating cylinder 6. The bottom end of the steel bar rod 8 extends out of the rotating cylinder 6 and is detachably connected to the bottom end of the rotating cylinder 6 through a fixing component. A sliding ring 9 is slidably connected to the outer wall of the rotating cylinder 6;

[0038] A plurality of expansion rods 7 are circumferentially arranged inside the inner bladder 5, and the bottom ends of the expansion rods 7 are inclined outwardly towards the outer bladder 4. The bottom ends of the expansion rods 7 are hinged to the inner wall of the inner bladder 5. The top ends of the plurality of expansion rods 7 are hinged with a connecting component. The connecting component is slidably connected to the side wall of the sleeve 3, and the end of the connecting component away from the expansion rods 7 is fixedly connected to the outer wall of the sliding ring 9.

[0039] The steel bar rod 8 is connected and fixed to the rotating cylinder 6 through the fixing component, so as to realize that rotating the steel bar rod 8 drives the rotating cylinder 6 to rotate synchronously, and the position of the rotating cylinder 6 is fixed by the top plate 1 and the bottom plate 2. Thus, before grouting when the device is inserted into the anchor hole, rotating the steel bar rod 8 makes the rotating cylinder 6 rotate, so that the sliding ring 9 slides downward along the outer wall of the rotating cylinder 6, and drives the connecting component to move synchronously on the sleeve 3, thereby driving the plurality of expansion rods 7, causing the plurality of expansion rods 7 to displace and expand the inner bladder 5, so that the bottom of the inner bladder 5 is fully unfolded. First, it improves the ductility of the volume of the enlarged head and enhances the anchoring effect. Second, after the bottom of the inner bladder 5 is fully unfolded, when grouting the inner bladder 5, the slurry can better fill the inner bladder 5, which can improve the flow effect of the slurry entering the outer bladder 4 through the inner bladder 5 when the inner bladder 5 is filled with slurry.

[0040] Furthermore, the plurality of expansion rods 7 are distributed in an umbrella shape.

[0041] In a further optimized solution, a grouting pipe 10 is fixedly connected to the top plate 1. The grouting pipe 10 sequentially penetrates through the top plate 1, the outer bladder 4 and the inner bladder 5 and is communicated with the inner cavity of the inner bladder 5. The side walls of the grouting pipe 10 penetrating through the outer bladder 4 and the inner bladder 5 are respectively fixedly connected to the outer bladder 4 and the inner bladder 5, improving the connection stability between the grouting pipe 10 and the inner bladder 5. An exhaust pipe 11 is fixedly connected to the top plate 1. The exhaust pipe 11 penetrates through the top plate 1 and the outer bladder 4 and is communicated with the inner cavity of the outer bladder 4. The side wall of the exhaust pipe 11 penetrating through the outer bladder 4 is fixedly connected to the outer bladder 4, improving the connection stability between the exhaust pipe 11 and the outer bladder 4.

[0042] Both the grouting pipe 10 and the exhaust pipe 11 can be connected to external pipelines through existing plugging or threading methods to extend the length. The slurry is injected into the inner bladder 5 through the grouting pipe 10, and by setting the exhaust pipe 11, the gas in the inner bladder 5 and the outer bladder 4 can be discharged in time, improving the grouting effect.

[0043] In a further optimized solution, a plurality of slurry passing holes 12 are formed in the side wall of the top of the inner bladder 5. The inner bladder 5 and the outer bladder 4 are communicated through the plurality of slurry passing holes 12.

[0044] By setting the pulp overflow holes 12, after the inner bladder 5 is filled with pulp, the pulp can overflow into the outer bladder 4 until the outer bladder 4 is filled. By setting the pulp overflow holes 12 at the top of the inner bladder 5, when the inner bladder 5 expands the outer bladder 4, the outer bladder 4 presents a conical shape, reducing the blockage generated on the pulp overflow holes 12. The size of the pulp overflow holes 12 can be opened according to actual needs.

[0045] In a further optimized solution, through holes are opened at the centers of the top plate 1 and the bottom plate 2, and bearings 13 are fixedly installed in the through holes. The outer walls at both ends of the rotating cylinder 6 are respectively fixedly connected to the inner rings of the two bearings 13.

[0046] Both of the two bearings 13 are bearings with good sealing performance. By setting the bearings 13, the position of the rotating cylinder 6 can be fixed and the rotation of the rotating cylinder 6 can be not interfered.

[0047] In a further optimized solution, the fixing assembly includes an anchor nut 14. The anchor nut 14 is detachably connected to the bottom end of the steel bar rod 8 extending out of the rotating cylinder 6. One end of the anchor nut 14 contacts the bottom end of the rotating cylinder 6. The other end of the anchor nut 14 is detachably connected to a sealing plate 15. The sealing plate 15 is detachably connected to the bottom end of the rotating cylinder 6 through a plurality of fixing bolts 25. A plurality of insertion rods 16 are fixedly connected to the end face of the sealing plate 15 close to the anchor nut 14. A plurality of insertion slots 17 are opened on the end face of the anchor nut 14 close to the sealing plate 15. The insertion rods 16 and the insertion slots 17 are arranged in one-to-one correspondence and are inserted.

[0048] By setting the anchor nut 14, it is convenient to connect the steel bar rod 8 and the rotating cylinder 6. And through the sealing plate 15 and the fixing bolts 25, the position of the anchor nut 14 can be limited to prevent the anchor nut 14 from coming off. Secondly, by inserting the insertion rods 16 into the insertion slots 17, the anchor nut 14 can be further limited to prevent the anchor nut 14 from rotating, realizing the connection and fixation of the steel bar rod 8 and the rotating cylinder 6.

[0049] In a further optimized solution, the connection assembly includes a plurality of chutes 18 circumferentially opened on the side wall of the sleeve 3. The chutes 18 are arranged vertically. A support plate 19 is slidably connected in the chutes 18. One end of the support plate 19 extends into the inner cavity of the inner bladder 5 and is provided with a first hinge seat 20. The tops of a plurality of expansion rods 7 are arranged in one-to-one correspondence with a plurality of first hinge seats 20 and are hinged. The other end of the support plate 19 is fixedly connected to the outer wall of the sliding ring 9.

[0050] When the sliding ring 9 moves downward, the support plate 19 slides downward along the chute 18, thereby driving the first hinge seat 20 to move, and further realizing the expansion effect of the expansion rods 7 on the inner bladder 5.

[0051] In a further optimized solution, one end of the expansion rod 7 far from the first hinge seat 20 is hinged to a second hinge seat 21, and the second hinge seat 21 is fixedly connected to the inner wall of the inner bladder 5.

[0052] By setting the second hinge seat 21 to cooperate with the first hinge seat 20, the two ends of the expansion rod 7 can be hinged, enabling the expansion rod 7 to move.

[0053] In a further optimized solution, a first connection ring 22 and a second connection ring 23 are fixedly sleeved on the outer wall of the sleeve 3. The first connection ring 22 and the second connection ring 23 are respectively located at both ends of the sliding groove 18 and inside the inner cavity of the inner bladder 5, and a corrugated pipe 24 is fixedly connected between the first connection ring 22 and the second connection ring 23. By setting the corrugated pipe 24, the position of the sliding groove 18 can be closed. The first hinge seat 20 is fixedly connected to the outer wall of the corrugated pipe 24, and the support plate 19 is fixedly connected to the inner wall of the corrugated pipe 24. The first hinge seat 20 and the support plate 19 are on the same axis, facilitating the support of the first hinge seat 20 by the support plate 19.

[0054] In a further optimized solution, a threaded groove 27 is formed on the bottom outer wall of the rotating cylinder 6, and the inner wall of the sliding ring 9 is threadedly connected to the threaded groove 27.

[0055] The rotation of the rotating cylinder 6 is driven by the rotation of the steel bar rod 8, and a plurality of sliding grooves 18 and support plates 19 can limit the sliding ring 9, thereby achieving the effect of the threaded movement of the sliding ring 9 through the threaded groove 27.

[0056] Furthermore, a guide head 26 is detachably connected to the bottom surface of the bottom plate 2. This connection method is a prior art and will not be elaborated here. The guide head 26 is used to wrap and protect the fixing component.

[0057] Improved integrated double-bladder expansion anchor process method:

[0058] Step 1: Open an anchor hole through an external drilling device;

[0059] Step 2: Assemble the double-bladder expansion anchor;

[0060] First, insert the steel bar rod 8 into the rotating cylinder 6, then install the anchor nut 14 onto the steel bar rod 8, and then install the sealing plate 15 below the anchor nut 14 through the fixing bolt 25 to limit and fix the anchor nut 14.

[0061] Step 3: Insert the double-bladder expansion anchor into the anchor hole through an external guiding and pressing device or manually, so that the guide head 26 contacts the bottom surface of the anchor hole;

[0062] Step 4: Rotate the steel bar rod 8 to expand the expansion mechanism and grout through the grouting pipe 10.

[0063] The steel bar rod 8 is rotated manually or by an external rotating device, so that the sliding ring 9 presses down along the outer wall of the rotating cylinder 6, and then drives a plurality of support plates 19 to move downward, so that a plurality of expansion rods 7 expand the bottom of the inner bladder 5 in an umbrella shape, and then grout is injected into the inner bladder 5 through the connection between the pouring device and the grouting pipe 10.

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0065] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. Improved integrated double-bag body expanding anchor rod, characterized in that, Comprising: A main body mechanism, the main body mechanism includes a top plate (1) and a bottom plate (2), a sleeve (3) is fixedly connected between the top plate (1) and the bottom plate (2), an outer bladder (4) is fixedly installed on the outer wall of the sleeve (3), an inner bladder (5) is arranged in the outer bladder (4) and is communicated with each other, and the inner bladder (5) is fixedly installed on the outer wall of the sleeve (3); An expansion mechanism, the expansion mechanism includes a rotating cylinder (6) and a plurality of expansion rods (7); The rotating cylinder (6) is rotatably connected in the sleeve (3), a steel bar rod (8) is arranged in the rotating cylinder (6), the bottom end of the steel bar rod (8) extends out of the rotating cylinder (6) and is detachably connected with the bottom end of the rotating cylinder (6) through a fixing component, and a sliding ring (9) is slidably connected to the outer wall of the rotating cylinder (6); A plurality of the expansion rods (7) are circumferentially arranged in the inner bladder (5), and the bottom ends of the expansion rods (7) are inclined towards the outer bladder (4), the bottom ends of the expansion rods (7) are hinged to the inner wall of the inner bladder (5), the top ends of a plurality of the expansion rods (7) are hinged with a connecting component, the connecting component is slidably connected to the side wall of the sleeve (3), and one end of the connecting component away from the expansion rod (7) is fixedly connected to the outer wall of the sliding ring (9).

2. The improved integrated double-bag expanding bolt according to claim 1, wherein: A grouting pipe (10) is fixedly connected to the top plate (1), the grouting pipe (10) sequentially penetrates through the top plate (1), the outer bladder (4) and the inner bladder (5) and is communicated with the inner cavity of the inner bladder (5), an exhaust pipe (11) is fixedly connected to the top plate (1), and the exhaust pipe (11) penetrates through the top plate (1) and the outer bladder (4) and is communicated with the inner cavity of the outer bladder (4).

3. The improved integrated double-bag expanding bolt according to claim 1, wherein: A plurality of slurry passing holes (12) are formed in the side wall of the top of the inner bladder (5), and the inner bladder (5) and the outer bladder (4) are communicated through a plurality of slurry passing holes (12).

4. The improved integrated double-bag body expanding anchor rod according to claim 1, characterized in that: Through holes are formed in the centers of the top plate (1) and the bottom plate (2), bearings (13) are fixedly installed in the through holes, and the outer walls of the two ends of the rotating cylinder (6) are respectively fixedly connected to the inner rings of the two bearings (13).

5. The improved integrated double-bag body expanding bolt according to claim 1, characterized in that: The fixing component includes an anchoring nut (14), the anchoring nut (14) is detachably connected to the bottom end of the steel bar rod (8) extending out of the rotating cylinder (6), one end of the anchoring nut (14) is in contact with the bottom end of the rotating cylinder (6), the other end of the anchoring nut (14) is detachably connected with a sealing plate (15), the sealing plate (15) is detachably connected to the bottom end of the rotating cylinder (6) through a plurality of fixing bolts (25), a plurality of inserting rods (16) are fixedly connected to the end surface of the sealing plate (15) close to the anchoring nut (14), a plurality of inserting slots (17) are formed in the end surface of the anchoring nut (14) close to the sealing plate (15), and the inserting rods (16) and the inserting slots (17) are arranged in one-to-one correspondence and are inserted.

6. The improved integrated double-bag body expanding anchor rod according to claim 1, wherein: The connecting component includes a plurality of chutes (18) circumferentially formed on the side wall of the sleeve (3). The chutes (18) are vertically arranged. A support plate (19) is slidably connected in the chutes (18). One end of the support plate (19) extends into the inner cavity of the inner bladder (5) and is provided with a first hinge seat (20). The tops of a plurality of the expansion rods (7) are arranged in one-to-one correspondence with and hinged to the plurality of the first hinge seats (20). The other end of the support plate (19) is fixedly connected to the outer wall of the sliding ring (9).

7. The improved integrated double-bag expanding bolt according to claim 6, characterized in that: One end of the expansion rod (7) away from the first hinge seat (20) is hinged with a second hinge seat (21), and the second hinge seat (21) is fixedly connected to the inner wall of the inner bladder (5).

8. The improved integrated double-bag body expanding anchor rod according to claim 6, wherein: A first connecting ring (22) and a second connecting ring (23) are fixedly sleeved on the outer wall of the sleeve (3). The first connecting ring (22) and the second connecting ring (23) are respectively located at both ends of the chute (18) and inside the inner cavity of the inner bladder (5). A corrugated pipe (24) is fixedly connected between the first connecting ring (22) and the second connecting ring (23). The first hinge seat (20) is fixedly connected to the outer wall of the corrugated pipe (24). The support plate (19) is fixedly connected to the inner wall of the corrugated pipe (24). The first hinge seat (20) and the support plate (19) are on the same axis.

9. The improved integrated double-bag body expanding anchor rod according to claim 1, wherein: A threaded groove (27) is formed on the bottom outer wall of the rotating cylinder (6). The inner wall of the sliding ring (9) is threadedly connected to the threaded groove (27).

10. The improved integrated double-bladder expanding anchor process method, based on the improved integrated double-bladder expanding anchor according to any one of claims 1-9, is characterized in that: Step 1: An anchor hole is drilled through an external drilling device. Step 2: Assemble the double-bladder expanding anchor. Step 3: Insert the double-bladder expanding anchor into the anchor hole. Step 4: Rotate the steel bar (8) to expand the expansion mechanism and grout through the grouting pipe (10).

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