In-line extruded anchor
By using a series-type extrusion anchor design, multiple anchor units are connected to the disc body and cement mortar is injected through grouting pipes, which solves the problem of anchor force loss caused by anchor deviation and achieves more stable anchoring and construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINXIANG JIAHUI TECH
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-09
AI Technical Summary
Existing anchor bolts are prone to deflection in anchor holes that are deep or long, resulting in insufficient anchoring force and partial loss.
A series of extrusion anchor bolts are used, which are connected to the disc body through multiple anchor bolt units. Cement mortar is injected through grouting pipes to form anchoring force, ensuring the perpendicularity of the anchor bolt unit to the anchor hole and reducing deviation.
It improves the stability of anchoring force and construction safety, ensures effective compression between anchor bolt units and anchor holes, and reduces anchoring force loss caused by deflection.
Smart Images
Figure CN224339017U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a series-type extrusion anchor bolt, belonging to the technical field of construction auxiliary devices for construction projects. Background Technology
[0002] Anchor bolts are structural members used for reinforcing soil and rock masses. Through the longitudinal tensile force of the anchor bolt, they overcome the limitation that the tensile strength of soil and rock is far lower than its compressive strength. Superficially, this restricts the soil and rock mass from detaching from their original structure. Macroscopically, it increases the cohesion of the soil and rock mass. From a mechanical perspective, it primarily improves the cohesion and internal friction angle of the surrounding rock mass. Essentially, the anchor bolt, located within the soil and rock mass, forms a new composite with it. The anchor bolt in this composite is key to solving the problem of low tensile strength in the surrounding rock mass, thus greatly enhancing its own load-bearing capacity. Anchor bolts are a fundamental component of tunnel support in modern underground mining, binding the surrounding rock together and allowing it to support itself. Now, anchor bolts are not only used in mining but also in engineering technology for the active reinforcement of building construction, slopes, tunnels, dams, and other structures.
[0003] However, existing anchor bolts typically only provide single-point anchoring force. In such cases, for deeper anchor holes or longer tunnels, the anchor bolt may become misaligned, resulting in a partial loss of anchoring force and the anchoring force not being fully utilized. Utility Model Content
[0004] In view of this, the present invention provides a series-connected compression anchor bolt, which enables the anchor bolt unit to form an anchoring force with the anchor hole. Therefore, the compression effect of the series-connected compression anchor bolt provided by the present invention is more reliable. Furthermore, since the series-connected compression anchor bolt provided by the present invention can apply a compression force to the surrounding soil through multiple anchor bolt units connected in series, and since they are connected in series by discs, the contact area between the discs is large. Therefore, ensuring the perpendicularity of any one anchor bolt unit relative to the construction site can ensure the perpendicularity of the multiple anchor bolt units connected in series relative to the construction site as a whole. Thus, the problem of partial loss of anchoring force caused by anchor bolt deflection can be reduced, making it more suitable for practical use.
[0005] To achieve the above objectives, the technical solution for the tandem anchor bolts provided by this utility model is as follows:
[0006] The tandem extrusion anchor bolt provided by this utility model includes multiple anchor bolt units, multiple grouting pipes, and multiple pairs of discs.
[0007] The anchor bolt unit is equipped with a flexible bladder, and the flexible bladder has an internal accommodating space;
[0008] The number of grouting pipes and the number of docking plates are the same as the number of anchor bolt units;
[0009] The plurality of anchor bolt units are connected in series to form a whole through corresponding disc bodies;
[0010] The multiple grouting pipes can inject cement mortar into the accommodating space of the corresponding anchor bolt unit, causing the corresponding accommodating space to expand and form an anchoring force with the jet grouting anchor hole.
[0011] The tandem anchor bolt provided by this utility model can also be further implemented using the following technical measures.
[0012] Preferably, there are 2 anchor units, 2 pairs of mating discs, and 2 grouting pipes. The series extrusion anchor includes a first anchor unit (19), a second anchor unit (20), a first grouting pipe (3), a second grouting pipe (2), a first disc (1), a second disc (9), a third disc (10), and a fourth disc (18).
[0013] The first anchor unit (19) is provided with a first flexible bag (6), so that the first flexible bag (6) has a first accommodating space inside; the second anchor unit (20) is provided with a second flexible bag (16), so that the second flexible bag (16) has a second accommodating space inside;
[0014] The first disc (1) is disposed on the upper part of the first anchor bolt unit (19), the second disc (9) is disposed on the lower part of the first anchor bolt unit (19), the third disc (10) is disposed on the upper part of the second anchor bolt unit (20), and the fourth disc (18) is disposed on the lower part of the second anchor bolt unit (20). The first anchor bolt unit (19) and the second anchor bolt unit (20) are connected in series to form a whole through the second disc (9) and the third disc (10).
[0015] The first grouting pipe (3) is used to inject cement mortar into the first accommodating space of the first anchor unit (19), and the second grouting pipe (2) is used to inject cement mortar into the second accommodating space of the second anchor unit (20), so that the first accommodating space and the second accommodating space expand and form an anchoring force with the jet grouting anchor hole.
[0016] Preferably, the first disc (1) is provided with a first through hole and a second through hole, the second disc (9) is provided with a third through hole, and the third disc is provided with a fourth through hole, wherein...
[0017] The first grouting pipe (3) passes through the first through hole, so that the first grout outlet (13) of the first grouting pipe (3) is located within the first accommodating space;
[0018] The second grouting pipe (2) passes through the second through hole, the third through hole, and the fourth through hole, so that the second grout outlet (14) of the second grouting pipe (2) is located in the second accommodating space.
[0019] Preferably, the tandem compression anchor also includes a first core cylinder (5) and a second core cylinder (15).
[0020] One end of the first core tube (5) is fixedly connected to the first disc body (1), and the other end of the first core tube (5) is fixedly connected to the second disc body (9), so that the first core tube (5) is located in the first accommodating space, and the length of the first core tube (5) is equal to the length of the first flexible bag (6).
[0021] One end of the second core tube (15) is fixedly connected to the third disc (10), and the other end of the second core tube (15) is fixedly connected to the fourth disc (18), so that the second core tube (15) is located in the second accommodating space, and the length of the second core tube (15) is equal to the length of the second flexible bag (16).
[0022] Preferably, the tandem extrusion anchor also includes a first grouting elbow (7) and a second grouting elbow (12).
[0023] The first core cylinder (5) is provided with a fifth through hole, and the first grouting elbow (7) passes through the fifth through hole, so that the first grout outlet (13) of the first grouting pipe (3) is located between the first core cylinder (5) and the first flexible bag (6);
[0024] The second core cylinder (15) is provided with a sixth through hole, and the second grouting elbow (12) passes through the sixth through hole, so that the second grout outlet (14) of the second grouting pipe (2) is located between the second core cylinder (15) and the second flexible bag (16).
[0025] Preferably, the first core cylinder (5) is provided with a first slurry passage hole, and the second core cylinder (15) is provided with a second slurry passage hole.
[0026] Preferably, the number of the first slurry passage hole and the number of the second slurry passage hole are both multiple.
[0027] Preferably, the tandem extrusion anchor also includes a first slurry outlet valve and a second slurry outlet valve.
[0028] The first slurry outlet valve is fixedly connected to the first slurry outlet (13), wherein the first slurry outlet valve is used to control the opening and closing of the first slurry outlet (13);
[0029] The second slurry outlet valve is fixedly connected to the second slurry outlet (14), wherein the second slurry outlet valve is used to control the opening and closing of the second slurry outlet (14).
[0030] Preferably, the first discharge valve is a one-way valve, so that cement mortar can only enter the corresponding space of the first accommodating space through the first discharge port (13); the second discharge valve is a one-way valve, so that cement mortar can only enter the corresponding space of the second accommodating space through the second discharge port (14).
[0031] Preferably, the flexible bag is made of a material that allows only gas to pass through while preventing the passage of liquids and solids.
[0032] Preferably, the tandem compression anchor also includes a first connecting ring (4), a second connecting ring (8), a third connecting ring (11), and a fourth connecting ring (17).
[0033] The first connecting ring (4) is fixedly connected to the lower part of the first disc body (1), the second connecting ring (8) is fixedly connected to the upper part of the second disc body (9), the first flexible bag (6) is fixedly connected to the first disc body (1) through the first connecting ring (4), and the first flexible bag (6) is fixedly connected to the second disc body (9) through the second connecting ring (8).
[0034] The third connecting ring (11) is fixedly connected to the lower part of the third disc body (10), the fourth connecting ring (17) is fixedly connected to the upper part of the fourth disc body (18), the second flexible bag (16) is fixedly connected to the third disc body (10) through the third connecting ring (11), and the second flexible bag (16) is fixedly connected to the fourth disc body (18) through the fourth connecting ring (17).
[0035] In application, after cement mortar is injected into the flexible bladder of the multiple series-connected anchor units provided in this embodiment of the present invention, multiple radially enlarged portions are formed. These portions can adapt to multiple interconnected series-connected anchor holes, enabling anchoring force to be formed between the anchor units and the anchor holes. Because the series-connected anchor provided in this invention can apply compressive force to the surrounding soil through multiple series-connected anchor units, and because they are connected as a whole by discs, the large contact area between the discs ensures that the perpendicularity of any one anchor unit relative to the site guarantees the perpendicularity of the entire series-connected anchor units relative to the site. Therefore, the problem of partial loss of anchoring force due to anchor deviation can be reduced. Thus, the series-connected compressive anchor provided in this embodiment of the present invention provides a more stable compressive effect on the surrounding soil, thereby better ensuring construction safety. Attached Figure Description
[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0037] Appendix Figure 1 A schematic diagram of the overall structure of the series-connected extrusion anchor provided in this embodiment of the present invention (in this embodiment, there are two anchors connected in series).
[0038] Appendix Figure 2 For the appendix Figure 1 M-direction view;
[0039] Appendix Figure 3 For the appendix Figure 1 A partially enlarged structural diagram of part A;
[0040] Appendix Figure 4 For the appendix Figure 1 A partially enlarged structural diagram of part B;
[0041] Explanation of reference numerals in the attached figures:
[0042] 1-First disc body, 2-Second grouting pipe, 3-First grouting pipe, 4-First connecting ring, 5-First core cylinder, 6-First flexible bag, 7-First grouting elbow, 8-Second connecting ring, 9-Second disc body, 10-Third disc body, 11-Third connecting ring, 12-Second grouting elbow, 13-First grout outlet, 14-Second grout outlet, 15-Second core cylinder, 16-Second flexible bag, 17-Fourth connecting ring, 18-Fourth disc body, 19-First anchor bolt unit, 20-Second anchor bolt unit. Detailed Implementation
[0043] In view of this, the present invention provides a series anchor bolt, which enables the anchor bolt unit to form an anchoring force with the anchor hole. Therefore, the compression effect of the series compression anchor bolt provided by the present invention is more reliable, and thus more suitable for practical use.
[0044] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a series anchor bolt proposed according to this utility model. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.
[0045] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships, such as A and / or B. Specifically, it can mean that A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.
[0046] See appendix Figure 1 -Appendix Figure 4 The tandem extrusion anchor bolt provided in this embodiment includes multiple anchor bolt units, multiple grouting pipes, and multiple pairs of discs. Each anchor bolt unit has a flexible bladder with an internal accommodating space. The number of grouting pipes and the number of mating discs are the same as the number of anchor bolt units. Multiple anchor bolt units are connected in series via corresponding discs. The multiple grouting pipes can inject cement mortar into the accommodating space of their respective anchor bolt units, causing the corresponding accommodating space to expand and form an anchoring force with the jet grouting anchor hole.
[0047] In application, after cement mortar is injected into the flexible bladder of the multiple series-connected anchor units provided in this embodiment of the present invention, multiple radially enlarged portions are formed. These portions can adapt to multiple interconnected series-connected anchor holes, enabling anchoring force to be formed between the anchor units and the anchor holes. Because the series-connected anchor provided in this invention can apply compressive force to the surrounding soil through multiple series-connected anchor units, and because they are connected as a whole by discs, the large contact area between the discs ensures that the perpendicularity of any one anchor unit relative to the site guarantees the perpendicularity of the entire series-connected anchor units relative to the site. Therefore, the problem of partial loss of anchoring force due to anchor deviation can be reduced. Thus, the series-connected compressive anchor provided in this embodiment of the present invention provides a more stable compressive effect on the surrounding soil, thereby better ensuring construction safety.
[0048] The anchor unit comprises two units, with two pairs of mating discs and two grouting pipes. The tandem extrusion anchor unit includes a first anchor unit 19, a second anchor unit 20, a first grouting pipe 3, a second grouting pipe 2, a first disc 1, a second disc 9, a third disc 10, and a fourth disc 18. The first anchor unit 19 has a first flexible bladder 6, providing a first accommodating space inside. The second anchor unit 20 has a second flexible bladder 16, providing a second accommodating space inside. The first disc 1 is located at the upper part of the first anchor unit 19, the second disc 9 at the lower part, the third disc 10 at the upper part, and the fourth disc 18 at the lower part. The first anchor unit 19 and the second anchor unit 20 are connected in series via the second disc 9 and the third disc 10. The first grouting pipe 3 is used to inject cement mortar into the first accommodating space of the first anchor bolt unit 19, and the second grouting pipe 2 is used to inject cement mortar into the second accommodating space of the second anchor bolt unit 20, so that the first accommodating space and the second accommodating space expand and form an anchoring force with the jet grouting anchor hole. In this case, when applied, after cement mortar is injected into the first flexible bag 6 of the first anchor bolt unit 19 and the second flexible bag 16 of the second anchor bolt unit 20, which are connected in series, two radially enlarged parts can be formed, which can adapt to the two connected series anchor holes and enable the first anchor bolt unit 19, the second anchor bolt unit 20 and the anchor hole to form an anchoring force. Because the tandem compression anchor provided by this utility model can apply a compressive force to the surrounding soil through the first anchor unit 19 and the second anchor unit 20 connected in series, and because they are connected in series through a disc body composed of a second disc body 9 and a third disc body 10, and because the contact area between the disc bodies composed of the second disc body 9 and the third disc body 10 is large, ensuring the perpendicularity of any one of the first anchor unit 19 and the second anchor unit 20 relative to the construction site can ensure the perpendicularity of the entire first anchor unit 19 and the second anchor unit 20 relative to the construction site. Therefore, it can reduce the problem of partial loss of anchoring force caused by anchor deviation. Therefore, the tandem compression anchor provided by this utility model can make the compression effect on the surrounding soil more stable, thereby better ensuring construction safety.
[0049] The first disc 1 has a first through hole and a second through hole, the second disc 9 has a third through hole, and the third disc has a fourth through hole. The first grouting pipe 3 passes through the first through hole, so that the first grout outlet 13 of the first grouting pipe 3 is located within the first accommodating space. The second grouting pipe 2 passes through the second through hole, the third through hole, and the fourth through hole, so that the second grout outlet 14 of the second grouting pipe 2 is located within the second accommodating space.
[0050] The series-type compression anchor bolt further includes a first core cylinder 5 and a second core cylinder 15. One end of the first core cylinder 5 is fixedly connected to the first disc 1, and the other end is fixedly connected to the second disc 9, so that the first core cylinder 5 is located within the first accommodating space, and the length of the first core cylinder 5 is equal to the length of the first flexible bag 6. One end of the second core cylinder 15 is fixedly connected to the third disc 10, and the other end is fixedly connected to the fourth disc 18, so that the second core cylinder 15 is located within the second accommodating space, and the length of the second core cylinder 15 is equal to the length of the second flexible bag 16. In this case, since the first core cylinder 5 and the second core cylinder 15 have a set diameter, they can expand the first flexible bag 6 by the first core cylinder 5 and the second flexible bag 16 by the second core cylinder 15, ensuring that the cement mortar is fully filled in the first and second accommodating spaces, avoiding the first flexible bag 6 and the second flexible bag 16 from twisting or knotting during the cement mortar pouring process, thereby ensuring the construction reliability of the series-type compression anchor bolt provided in this embodiment.
[0051] The tandem compression anchor bolt also includes a first grouting elbow 7 and a second grouting elbow 12. A fifth through hole is provided on the first core cylinder 5, through which the first grouting elbow 7 passes, such that the first grout outlet 13 of the first grouting pipe 3 is located between the first core cylinder 5 and the first flexible bag 6. A sixth through hole is provided on the second core cylinder 15, through which the second grouting elbow 12 passes, such that the second grout outlet 14 of the second grouting pipe 2 is located between the second core cylinder 15 and the second flexible bag 16. In this configuration, it can be ensured that the cement mortar injected through the first grouting pipe 3 is located between the first core cylinder 5 and the first flexible bag 6, and that the cement mortar injected through the second grouting pipe 2 is located between the second core cylinder 15 and the second flexible bag 16. Therefore, the anchoring reliability of the first anchor bolt unit 19 and the second anchor bolt unit 20 can be guaranteed.
[0052] The first core cylinder 5 is provided with a first grouting hole, and the second core cylinder 15 is provided with a second grouting hole. In this configuration, the cement mortar injected through the first grouting pipe 3 into the space between the first core cylinder 5 and the first flexible bag 6 can enter the first core cylinder 5 through the first grouting hole; the cement mortar injected through the second grouting pipe 2 into the space between the second core cylinder 15 and the second flexible bag 16 can enter the second core cylinder 15 through the second grouting hole. Therefore, the cement mortar injected into the first flexible bag 6 and the cement mortar injected into the second flexible bag 16 can become a single unit, thus making the cement mortar of the tandem compression anchor provided in this embodiment of the invention more compact, and thus providing a more reliable anchoring force.
[0053] The invention comprises multiple first and second grouting holes. This configuration allows for more efficient entry of cement mortar between the first core cylinder 5 and the first flexible bag 6 through the first grouting hole into the first core cylinder 5, and more efficient entry of cement mortar between the second core cylinder 15 and the second flexible bag 16 through the second grouting hole into the second core cylinder 15. Furthermore, the grouting within the first and second core cylinders 5 and 15 is more complete, thereby ensuring a more reliable anchoring force between the tandem extrusion anchor and the jet grouting anchor hole provided in this embodiment.
[0054] The tandem extrusion anchor bolt further includes a first grout outlet valve and a second grout outlet valve. The first grout outlet valve is fixedly connected to the first grout outlet 13, and is used to control the opening and closing of the first grout outlet 13. The second grout outlet valve is fixedly connected to the second grout outlet 14, and is used to control the opening and closing of the second grout outlet 14. In this configuration, when cement mortar is injected into the first accommodating space through the first grout outlet 13, the injection is controlled by the first grout outlet valve; similarly, when cement mortar is injected into the second accommodating space through the second grout outlet 14, the injection is controlled by the second grout outlet valve. This results in higher stability of the tandem extrusion anchor bolt provided in this embodiment during cement mortar injection.
[0055] The first discharge valve is a one-way valve, ensuring that cement mortar can only enter the corresponding space of the first receiving space through the first discharge port 13; the second discharge valve is also a one-way valve, ensuring that cement mortar can only enter the corresponding space of the second receiving space through the second discharge port 14. This design prevents backflow of cement mortar from either the first discharge port 13 or the second discharge port 14, thus ensuring higher operational stability of the tandem compression anchor bolt provided in this embodiment.
[0056] The flexible bladder is made of a material that allows only gas flow while preventing the flow of liquids and solids. In this configuration, during cement mortar injection, the gas pressure increases in the first flexible bladder 6 due to the reduced remaining volume, and the gas pressure increases in the second flexible bladder 16 due to the reduced remaining volume, as well as the gas pressure increases in the second flexible bladder 16 due to the reduced remaining volume, ensures a higher filling density of cement mortar in the first and second flexible bladder 6 and second flexible bladder 16 spaces. This reduces uneven cement mortar filling caused by air bubbles, thereby further improving the anchoring stability of the tandem compression anchor provided in this embodiment.
[0057] The tandem compression anchor bolt further includes a first connecting ring 4, a second connecting ring 8, a third connecting ring 11, and a fourth connecting ring 17. The first connecting ring 4 is fixedly connected to the lower part of the first disc 1, the second connecting ring 8 is fixedly connected to the upper part of the second disc 9, and the first flexible bladder 6 is fixedly connected to the first disc 1 via the first connecting ring 4, and to the second disc 9 via the second connecting ring 8. The third connecting ring 11 is fixedly connected to the lower part of the third disc 10, the fourth connecting ring 17 is fixedly connected to the upper part of the fourth disc 18, and the second flexible bladder 16 is fixedly connected to the third disc 10 via the third connecting ring 11, and to the fourth disc 18 via the fourth connecting ring 17. In this first configuration, the connection stability between the first flexible bladder 6 and the first disc 1 and the second disc 9, as well as the connection stability between the second flexible bladder 16 and the third disc 10 and the fourth disc 18, can be guaranteed, further ensuring the working stability of the tandem compression anchor bolt provided in this embodiment.
[0058] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0059] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A series-type extrusion anchor bolt, characterized in that, Includes multiple anchor bolt units, multiple grouting pipes, and multiple pairs of discs. The anchor bolt unit is equipped with a flexible bladder, and the flexible bladder has an internal accommodating space; The number of grouting pipes and the number of pairs of discs are the same as the number of anchor bolt units; The plurality of anchor bolt units are connected in series to form a whole through corresponding disc bodies; The multiple grouting pipes can inject cement mortar into the accommodating space of the corresponding anchor bolt unit, causing the corresponding accommodating space to expand and form an anchoring force with the jet grouting anchor hole.
2. The tandem compression anchor bolt according to claim 1, characterized in that, There are 2 anchor bolt units, 2 pairs of disc bodies, and 2 grouting pipes. The series extrusion anchor bolt includes a first anchor bolt unit (19), a second anchor bolt unit (20), a first grouting pipe (3), a second grouting pipe (2), a first disc body (1), a second disc body (9), a third disc body (10), and a fourth disc body (18). The first anchor unit (19) is provided with a first flexible bag (6), so that the first flexible bag (6) has a first accommodating space inside; the second anchor unit (20) is provided with a second flexible bag (16), so that the second flexible bag (16) has a second accommodating space inside; The first disc (1) is disposed on the upper part of the first anchor bolt unit (19), the second disc (9) is disposed on the lower part of the first anchor bolt unit (19), the third disc (10) is disposed on the upper part of the second anchor bolt unit (20), and the fourth disc (18) is disposed on the lower part of the second anchor bolt unit (20). The first anchor bolt unit (19) and the second anchor bolt unit (20) are connected in series to form a whole through the second disc (9) and the third disc (10). The first grouting pipe (3) is used to inject cement mortar into the first accommodating space of the first anchor unit (19), and the second grouting pipe (2) is used to inject cement mortar into the second accommodating space of the second anchor unit (20), so that the first accommodating space and the second accommodating space expand and form an anchoring force with the jet grouting anchor hole.
3. The tandem compression anchor bolt according to claim 2, characterized in that, The first disc (1) is provided with a first through hole and a second through hole, the second disc (9) is provided with a third through hole, and the third disc is provided with a fourth through hole, wherein, The first grouting pipe (3) passes through the first through hole, so that the first grout outlet (13) of the first grouting pipe (3) is located within the first accommodating space; The second grouting pipe (2) passes through the second through hole, the third through hole, and the fourth through hole, so that the second grout outlet (14) of the second grouting pipe (2) is located in the second accommodating space.
4. The tandem compression anchor bolt according to claim 2, characterized in that, It also includes a first core tube (5) and a second core tube (15). One end of the first core tube (5) is fixedly connected to the first disc body (1), and the other end of the first core tube (5) is fixedly connected to the second disc body (9), so that the first core tube (5) is located in the first accommodating space, and the length of the first core tube (5) is equal to the length of the first flexible bag (6). One end of the second core tube (15) is fixedly connected to the third disc (10), and the other end of the second core tube (15) is fixedly connected to the fourth disc (18), so that the second core tube (15) is located in the second accommodating space, and the length of the second core tube (15) is equal to the length of the second flexible bag (16).
5. The tandem compression anchor bolt according to claim 4, characterized in that, It also includes the first grouting elbow (7) and the second grouting elbow (12). The first core cylinder (5) is provided with a fifth through hole, and the first grouting elbow (7) passes through the fifth through hole, so that the first grout outlet (13) of the first grouting pipe (3) is located between the first core cylinder (5) and the first flexible bag (6); The second core cylinder (15) is provided with a sixth through hole, and the second grouting elbow (12) passes through the sixth through hole, so that the second grout outlet (14) of the second grouting pipe (2) is located between the second core cylinder (15) and the second flexible bag (16).
6. The tandem compression anchor bolt according to claim 5, characterized in that, The first core cylinder (5) is provided with a first slurry passage hole, and the second core cylinder (15) is provided with a second slurry passage hole.
7. The tandem compression anchor bolt according to claim 6, characterized in that, The number of the first grout passage hole and the number of the second grout passage hole are both multiple.
8. The tandem compression anchor bolt according to claim 3, characterized in that, It also includes a first discharge valve and a second discharge valve. The first slurry outlet valve is fixedly connected to the first slurry outlet (13), wherein the first slurry outlet valve is used to control the opening and closing of the first slurry outlet (13); The second slurry outlet valve is fixedly connected to the second slurry outlet (14), wherein the second slurry outlet valve is used to control the opening and closing of the second slurry outlet (14).
9. The tandem compression anchor bolt according to claim 8, characterized in that, The first discharge valve is a one-way valve, which allows cement mortar to enter the corresponding space of the first accommodating space only through the first discharge port (13); the second discharge valve is a one-way valve, which allows cement mortar to enter the corresponding space of the second accommodating space only through the second discharge port (14).
10. The tandem compression anchor bolt according to claim 1, characterized in that, The flexible bag is made of a material that allows only gas to pass through while preventing the passage of liquids and solids.
11. The tandem compression anchor bolt according to claim 2, characterized in that, It also includes a first connecting ring (4), a second connecting ring (8), a third connecting ring (11), and a fourth connecting ring (17). The first connecting ring (4) is fixedly connected to the lower part of the first disc body (1), the second connecting ring (8) is fixedly connected to the upper part of the second disc body (9), the first flexible bag (6) is fixedly connected to the first disc body (1) through the first connecting ring (4), and the first flexible bag (6) is fixedly connected to the second disc body (9) through the second connecting ring (8). The third connecting ring (11) is fixedly connected to the lower part of the third disc body (10), the fourth connecting ring (17) is fixedly connected to the upper part of the fourth disc body (18), the second flexible bag (16) is fixedly connected to the third disc body (10) through the third connecting ring (11), and the second flexible bag (16) is fixedly connected to the fourth disc body (18) through the fourth connecting ring (17).