Variable diameter grouting anchor device

Abstract

The present invention discloses a variable diameter grouting anchoring device, which belongs to the technical field of grouting devices. It includes a fixed shaft, a movable sleeve and a diameter expansion assembly; the movable sleeve is arranged on the outer periphery of the fixed shaft, and a moving pair is formed between the movable sleeve and the fixed shaft; the diameter expansion assembly includes a first movable connecting member, a diameter expansion rod and a third movable connecting member, wherein one end of the first movable connecting member is hinged to the movable sleeve, the other end of the first movable connecting member is hinged to the diameter expansion rod, one end of the third movable connecting member is hinged to the fixed shaft, the other end of the third movable connecting member is hinged to the diameter expansion rod, the diameter expansion assembly includes multiple groups, and the diameter expansion assembly is arranged on the periphery of the movable sleeve along the circumference of the movable sleeve. It can expand the diameter of the anchoring device as needed during the construction process.

Description

Technical Field

[0001] The invention relates to the technical field of grouting devices, in particular to a variable diameter grouting anchoring device. Background Art

[0002] The traditional variable-diameter steel frame grouting anchoring device has a complex structure. There is a great deal of uncertainty in the way the steel frame in the grouting bag is opened, and process control is impossible. Due to underground construction, ground operators cannot judge whether the steel frame is opened and an enlarged head is formed. It can only be determined by the final ground test of pull-out resistance. However, at this time, the opportunity for remedy has been lost, posing a major hidden danger to the quality of the entire project. Summary of the invention

[0003] In view of this, the present invention provides a variable diameter grouting anchoring device, which can expand the diameter of the anchoring device as needed during the construction process, thereby being more suitable for practical use.

[0004] In order to achieve the above first purpose, the technical solution of the variable diameter grouting anchoring device provided by the present invention is as follows:

[0005] The variable diameter grouting anchoring device provided by the present invention comprises a fixed shaft (2), a movable sleeve (5) and a diameter expansion component;

[0006] The movable sleeve (5) is sleeved on the outer circumference of the fixed shaft (2), and a moving pair is formed between the movable sleeve (5) and the fixed shaft (2);

[0007] The diameter expansion assembly comprises a first movable connecting member (17), a diameter expansion rod (12) and a third movable connecting member (19), wherein:

[0008] One end of the first movable connecting member (17) is hinged to the movable sleeve (5), and the other end of the first movable connecting member (17) is hinged to the diameter expansion rod (12).

[0009] One end of the third movable connecting member (19) is hinged to the fixed shaft (2), and the other end of the third movable connecting member (19) is hinged to the diameter expansion rod (12).

[0010] The diameter expansion components include a plurality of groups, and the diameter expansion components are arranged on the periphery of the movable sleeve along the circumferential direction of the movable sleeve (5).

[0011] The variable diameter grouting anchoring device provided by the present invention can also be further implemented by adopting the following technical measures.

[0012] Preferably, the diameter expansion assembly further comprises a second movable connecting member (18),

[0013] One end of the second movable connecting member (18) is hinged to the movable sleeve (5), and the other end of the second movable connecting member (18) is hinged to the diameter expansion rod (12), wherein:

[0014] The hinge point between the second movable connecting member (18) and the diameter expansion rod (12) and the hinge point between the third movable connecting member (19) and the diameter expansion rod (12) are the same hinge point.

[0015] Preferably, the variable diameter grouting anchoring device further comprises a core shaft (1), wherein the core shaft (1) is fixedly passed through the center of the fixed shaft (2) so that there is no relative movement between the core shaft (1) and the fixed shaft (2), and a thread is arranged on the core shaft (1).

[0016] Preferably, the variable diameter grouting anchoring device further comprises a grouting pipe (3) and a grouting container (7).

[0017] The position between the grouting pipe (3) and the fixed shaft (2) is relatively fixed.

[0018] The positions of the grouting container (7) and the movable sleeve (5) are relatively fixed.

[0019] The grouting pipe (3) is connected to the grouting container (7) through its central through hole;

[0020] A moving pair is formed between the grouting pipe (3) and the grouting container (7). When slurry is poured from the grouting pipe (3), the slurry enters the grouting container (7) from the grouting pipe (3).

[0021] Preferably, a grouting hole (20) is provided at the bottom of the side wall of the grouting pipe (3), wherein:

[0022] Before the expansion rod (12) is fully expanded, the overflow hole (20) is completely below the upper edge of the grouting container (7);

[0023] When the expansion rod (12) is expanded and ready, the overflow hole (20) is at least partially located above the upper edge of the grouting container (7).

[0024] Preferably, a sealing mechanism (9) is provided between the outer wall of the grouting pipe (3) and the inner wall of the grouting container (7).

[0025] Preferably, the sealing mechanism (9) comprises at least one sealing ring.

[0026] The sealing ring is arranged in the horizontal direction along the circumference of the grouting pipe (3).

[0027] Preferably, the variable diameter grouting anchoring device further comprises a transverse flexible reinforcing rib (13),

[0028] The transverse flexible reinforcing rib (13) is wound around the outer circumference of the diameter-expanding rod (12) in the circumferential direction.

[0029] Articulated plate bearing plate Articulated plate bearing plate Articulated plate bearing plate 9. The variable diameter grouting anchoring device according to claim 4, characterized in that it also comprises a bearing plate (8),

[0030] The carrying plate (8) is fixedly connected to the movable sleeve (5), and the grouting container (7) is carried above the carrying plate (8).

[0031] Preferably, the variable diameter grouting anchoring device further comprises an outer cover (14), an upper connecting piece (15) and a lower connecting piece (16).

[0032] The outer cover (14) is arranged outside the diameter-expanding rod (12);

[0033] The upper part of the outer cover (14) is fixedly connected to the core shaft (1) via an upper connecting piece (15);

[0034] The lower part of the outer cover (14) is fixedly connected to the fixed shaft (2) through a lower connecting member (16). When the border grouting anchoring device provided by the present invention is used for grouting operation, as the movable sleeve 5 moves downward relative to the fixed shaft 2, since one end of the first movable connecting member 17 is hinged to the movable sleeve 5, the hinge point between the first movable connecting member 17 and the movable sleeve 5 also moves downward with the movable sleeve 5 relative to the fixed shaft 2. At this time, under the hinged limiting effect between the third movable connecting member 19 and the fixed shaft 2, the first movable connecting member 17 rotates counterclockwise with the hinge point between it and the movable sleeve 5 as the rotation center, and the third movable connecting member 19 rotates clockwise with the hinge point between it and the fixed shaft 2 as the rotation center. As a result, the expansion rod 12 is expanded by being stretched open by the first movable connecting member 17 and the third movable connecting member 19. Therefore, the border grouting anchoring device provided by the present invention can expand the diameter of the anchoring device as needed during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0036] In the attached picture:

[0037] Figure 1It is a schematic diagram of the partial structure of the variable diameter grouting anchor device involved in the embodiment of the present invention (wherein the diameter expansion rod and the movable connecting piece are not shown);

[0038] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure of part C in the middle;

[0039] Figure 3 It is a schematic structural diagram of the variable diameter grouting anchoring device involved in the embodiment of the present invention when the diameter is in the minimum state;

[0040] Figure 4 It is a schematic structural diagram of the variable diameter grouting anchoring device involved in the embodiment of the present invention when the diameter is the largest;

[0041] Figure 5 It is a schematic structural diagram of the connection relationship between the variable diameter grouting anchor device and its outer cover involved in the embodiment of the present invention;

[0042] Figure 6 It is a schematic structural diagram of a cross section of the variable diameter grouting anchoring device involved in the embodiment of the present invention when the diameter is in the minimum state;

[0043] Figure 7 It is a schematic structural diagram of a cross section of the variable diameter grouting anchoring device involved in the embodiment of the present invention when the diameter is at the maximum state;

[0044] Figure 8 It is a schematic structural diagram of a cross section of a variable diameter grouting anchor device and its outer cover involved in an embodiment of the present invention;

[0045] Fig. 9 for Figure 3 A partial enlarged view of part D in the middle;

[0046] Fig.10 for Figure 3 A partial enlarged view of part E in the middle;

[0047] Fig.11 for Figure 3 A partial enlarged view of part F in the middle. DETAILED DESCRIPTION

[0048] In order to solve the problems existing in the prior art, the present invention provides a variable diameter grouting anchoring device, which can expand the diameter of the anchoring device as needed during the construction process, so as to be more suitable for practical use.

[0049] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the variable diameter grouting anchor device proposed by the present invention, its specific implementation, structure, characteristics and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, the features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0050] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B. Specifically, it is understood that: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may be met.

[0051] See attached Figure 1 ~Attached Fig.11 The variable diameter grouting anchoring device provided by the present invention includes a fixed shaft 2, a movable sleeve 5 and an expansion assembly. The movable sleeve 5 is sleeved on the outer periphery of the fixed shaft 2, and a moving pair is formed between the movable sleeve 5 and the fixed shaft 2. The expansion assembly includes a first movable connecting member 17, an expansion rod 12 and a third movable connecting member 19, wherein one end of the first movable connecting member 17 is hinged to the movable sleeve 5, and the other end of the first movable connecting member 17 is hinged to the expansion rod 12. One end of the third movable connecting member 19 is hinged to the fixed shaft 2, and the other end of the third movable connecting member 19 is hinged to the expansion rod 12. The expansion assembly includes a plurality of groups, and the expansion assembly is arranged on the periphery of the movable sleeve along the circumference of the movable sleeve 5.

[0052] When the border grouting anchoring device provided by the present invention is used for grouting operation, as the movable sleeve 5 moves downward relative to the fixed shaft 2, since one end of the first movable connecting member 17 is hinged to the movable sleeve 5, the hinge point between the first movable connecting member 17 and the movable sleeve 5 also moves downward with the movable sleeve 5 relative to the fixed shaft 2. At this time, under the hinge limiting effect of the third movable connecting member 19 and the fixed shaft 2, the first movable connecting member 17 rotates counterclockwise with the hinge point between it and the movable sleeve 5 as the rotation center, and the third movable connecting member 19 rotates clockwise with the hinge point between it and the fixed shaft 2 as the rotation center. As a result, the expansion rod 12 is expanded by being stretched apart by the first movable connecting member 17 and the third movable connecting member 19. Therefore, the border grouting anchoring device provided by the present invention can expand the diameter of the anchoring device as needed during the construction process. In this embodiment, in order to ensure the hinge effect between the third movable connecting member 19 and the fixed shaft 2, a first fixed connecting member 10 can also be arranged on the fixed shaft 2, wherein the first fixed connecting member 10 is fixedly connected to the fixed shaft 2 so that there is no relative movement between the first fixed connecting member 10 and the fixed shaft 2, and the hinge point between the third movable connecting member 19 and the fixed shaft 2 is arranged on the first fixed connecting member 10.

[0053] The expansion assembly further includes a second movable connecting member 18, one end of which is hinged to the movable sleeve 5, and the other end of which is hinged to the expansion rod 12, wherein the hinge point between the second movable connecting member 18 and the expansion rod 12, and the hinge point between the third movable connecting member 19 and the expansion rod 12 are the same hinge point. In this case, when the movable sleeve 5 moves downward relative to the fixed shaft 2, the second movable connecting member 18 and the third movable connecting member 19 exert a more stable force on the expansion rod 12, and the expansion operation achieved by the expansion rod 12 is more stable. In practice, the expansion assembly may further include a plurality of intermediate movable connecting members (not shown in the figure), one end of which is hinged to the movable sleeve 5, and the other end of which is hinged to the expansion rod 12. In this case, the force points of the expansion rod 12 can be increased, and thus, its expansion stability can be further improved.

[0054] The variable diameter grouting anchor device further comprises a core shaft 1, which is fixedly arranged in the center of the fixed shaft 2 so that there is no relative movement between the core shaft 1 and the fixed shaft 2, and a thread is arranged on the core shaft 1. In this case, the variable diameter grouting anchor device provided by the present invention can be connected to the outside through the core shaft 1 with a thread.

[0055] The variable diameter grouting anchor device further includes a grouting pipe 3 and a grouting container 7. The position between the grouting pipe 3 and the fixed shaft 2 is relatively fixed, and the position between the grouting container 7 and the movable sleeve 5 is relatively fixed. The grouting pipe 3 is connected to the grouting container 7 through its central through hole; a moving pair is formed between the grouting pipe 3 and the grouting container 7. When the grout is poured from the grouting pipe 3, the grout enters the grouting container 7 from the grouting pipe 3. In this embodiment, the grouting pipe 3 is fixedly connected to the fixed shaft 2 through the second fixed connector 4. In this case, when grouting is performed through the grouting pipe 3, as the volume of the slurry injected into the grouting container 7 increases, the grouting container 7 moves downward relative to the grouting pipe 3. At this time, since the position between the grouting container 7 and the movable sleeve 5 is relatively fixed, the movable sleeve 5 moves downward relative to the fixed axis 2 as the volume of the slurry injected into the grouting container 7 increases. That is to say, the grouting operation can provide a force for the diameter expansion action achieved by the diameter expansion rod 12. In this case, the diameter expansion action can be achieved by the diameter expansion rod 12 without applying a downward force to the movable sleeve 5 relative to the fixed axis 2 through other external forces, which not only improves work efficiency but also saves human resources.

[0056] The bottom of the side wall of the grouting pipe 3 is provided with an overflow hole 20, wherein, before the expansion rod 12 is opened, the overflow hole 20 is completely below the upper edge of the grouting container 7; when the expansion rod 12 is opened, the overflow hole 20 is at least partially above the upper edge of the grouting container 7. Normally, the slurry injected through the grouting pipe 3 enters the grouting container 7 through the central through hole of the grouting pipe 3, but when the stroke of the grouting container 7 moving downward relative to the grouting pipe 3 is large enough to exceed the maximum stroke of the grouting container 7, the slurry that continues to be injected through the grouting pipe 3 can overflow through the overflow hole 20 at the bottom of the side wall of the grouting pipe 3, and the slurry injected through the grouting pipe 3 can be buried in the anchor hole for anchoring. In addition, in this case, as long as the slurry can enter the anchor hole, it can be explained that the expansion rod 12 is ready to be opened at this time, and there is no need to further determine whether the expansion rod 12 is ready to be opened, so that the standardized operation of the anchoring process can be achieved.

[0057] Wherein, a sealing mechanism 9 is provided between the outer wall of the grouting pipe 3 and the inner wall of the grouting container 7. In this case, the slurry injected into the grouting container 7 through the grouting pipe 3 can be prevented from overflowing from the contact gap between the outer wall of the grouting pipe 3 and the inner wall of the grouting container 7 to affect the work efficiency.

[0058] The sealing mechanism 9 includes at least one sealing ring, which is arranged horizontally along the circumference of the grouting pipe 3. In this embodiment, the sealing mechanism 9 includes a first sealing ring 9a and a second sealing ring 9b, which are arranged horizontally along the circumference of the grouting pipe 3, wherein the first sealing ring 9a and the second sealing ring 9b can be made of materials such as rubber or natural latex, and their common feature is that they can be slightly deformed after being compressed, and a more reliable sealing effect can be obtained through the deformation.

[0059] The variable diameter grouting anchoring device further includes a transverse flexible reinforcing rib 13. The transverse flexible reinforcing rib 13 is wound around the outer periphery of the diameter expansion rod 12 in the circumferential direction. When the expansion action of the diameter expansion rod 12 is realized only by the action of the first movable connecting member 17, the second movable connecting member 18 and the third movable connecting member 19, the diameter expansion effect between the connection points is poor due to the small number of connection points between the diameter expansion rod 12 and the first connecting member 17, the second connecting member 18 and the third connecting member 19. However, by introducing the transverse flexible reinforcing rib 13, the diameter expansion action points of the diameter expansion rod 12 can be encrypted, thereby making the diameter expansion effect of the diameter expansion rod 12 better and more reliable.

[0060] The variable diameter grouting anchoring device provided by the present invention further includes a bearing plate 8, which is fixedly connected to the movable sleeve 5, and the grouting container 7 is carried on the upper side of the bearing plate 8. In this case, the bearing plate 8 is used to transmit the downward movement of the grouting container 7 relative to the grouting pipe 3. At this time, as the grouting container 7 moves downward relative to the grouting pipe 3, the bearing plate 8 is pushed to move downward relative to the grouting pipe 3, and the movable sleeve 3 also moves downward relative to the fixed shaft 2, so that the first movable connecting member 17 and the third movable connecting member 19 can smoothly apply the expansion force to the diameter expansion rod 12. In this embodiment, the grouting container 7 is fixedly connected to the upper surface of the bearing plate 8 through its bottom, for example, it can be welded, or a blind hole with an internal thread is provided at the bottom of the grouting container 7, and a connecting column is provided on the upper surface of the bearing plate 8, and the connecting column is provided with an external thread that can match the internal thread. In this case, the grouting container 7 can be fixed to the upper surface of the bearing plate 8 through the blind hole with the internal thread and the external thread that matches the internal thread.

[0061] The variable diameter grouting anchoring device further includes an articulated plate 6 and a bearing plate 8. The articulated plate 6 is connected to the movable sleeve 5, the hinge point between the first movable connection member 17 and the movable sleeve 5 is located at the articulated plate 6, and the hinge point between the second movable connection member 18 and the movable sleeve 5 is located at the bearing plate 8. In this case, the connection between the first movable connection member 17 and the movable sleeve 5 is realized through the articulated plate 6, and the connection between the second movable connection member 18 and the movable sleeve 5 is realized through the bearing plate 8, so that the connection between the first movable connection member 17, the second movable connection member 18 and the movable sleeve 5 is more reliable. The variable diameter grouting anchoring device further includes an outer cover 14, an upper connecting member 15 and a lower connecting member 16. The outer cover 14 is arranged on the outside of the expansion rod 12; the upper part of the outer cover 14 is fixedly connected to the core shaft 1 through the upper connecting member 15; the lower part of the outer cover 14 is fixedly connected to the fixed shaft 2 through the lower connecting member 16. In this case, the outside of the expansion rod 12 is completely covered by the outer cover 14, which can make the expansion effect of the expansion rod 12 more reliable. In this embodiment, the outer cover can be made of a flexible material. In this case, when the variable diameter grouting anchor device provided by the present invention is not expanded, it can be used in conjunction with the expansion rod that has not been expanded, and when the variable diameter grouting anchor device provided by the present invention is in the process of performing the expansion operation or when the expansion is completed, the outer cover can also be well used in conjunction with the expansion rod. Among them, the flexible material can be a textile material, such as cotton cloth, nylon cloth, etc.

[0062] In addition, see Appendix Fig.11 The variable diameter grouting anchoring device provided by the present invention is provided with an anchor head at the bottom end, and the anchor head can advance toward the anchoring position through its tip.

[0063] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A variable diameter grouting anchoring device, characterized in that: It comprises a fixed shaft (2), a movable sleeve (5) and a diameter expansion component; The movable sleeve (5) is sleeved on the outer circumference of the fixed shaft (2), and a moving pair is formed between the movable sleeve (5) and the fixed shaft (2); The diameter expansion assembly comprises a first movable connecting member (17), a diameter expansion rod (12) and a third movable connecting member (19), wherein: One end of the first movable connecting member (17) is hinged to the movable sleeve (5), and the other end of the first movable connecting member (17) is hinged to the diameter expansion rod (12). One end of the third movable connecting member (19) is hinged to the fixed shaft (2), and the other end of the third movable connecting member (19) is hinged to the diameter expansion rod (12). The diameter expansion components include a plurality of groups, and the diameter expansion components are arranged on the periphery of the movable sleeve along the circumferential direction of the movable sleeve (5); It also includes a grouting pipe (3) and a grouting container (7), The position between the grouting pipe (3) and the fixed shaft (2) is relatively fixed. The positions of the grouting container (7) and the movable sleeve (5) are relatively fixed. The grouting pipe (3) is connected to the grouting container (7) through its central through hole; A moving pair is formed between the grouting pipe (3) and the grouting container (7), and when the slurry is poured from the grouting pipe (3), the slurry enters the grouting container (7) from the grouting pipe (3); A first fixed connection member (10) is arranged on the fixed shaft (2), wherein the first fixed connection member (10) is fixedly connected to the fixed shaft (2) so that there is no relative movement between the first fixed connection member (10) and the fixed shaft (2), and a hinge point between the third movable connection member (19) and the fixed shaft (2) is arranged on the first fixed connection member (10); The bottom of the side wall of the grouting pipe (3) is provided with a grout overflow hole (20), wherein: Before the expansion rod (12) is fully expanded, the overflow hole (20) is completely below the upper edge of the grouting container (7); When the expansion rod (12) is fully expanded, the overflow hole (20) is at least partially located above the upper edge of the grouting container (7); It also includes a carrier plate (8), The carrying plate (8) is fixedly connected to the movable sleeve (5), and the grouting container (7) is carried above the carrying plate (8).

2. The variable diameter grouting anchoring device according to claim 1, characterized in that: The diameter expansion assembly further comprises a second movable connecting member (18), One end of the second movable connecting member (18) is hinged to the movable sleeve (5), and the other end of the second movable connecting member (18) is hinged to the diameter expansion rod (12), wherein: The hinge point between the second movable connecting member (18) and the diameter expansion rod (12) and the hinge point between the third movable connecting member (19) and the diameter expansion rod (12) are the same hinge point.

3. The variable diameter grouting anchoring device according to claim 1, characterized in that: It also comprises a core shaft (1), wherein the core shaft (1) is fixedly inserted into the center of the fixed shaft (2), so that there is no relative movement between the core shaft (1) and the fixed shaft (2), and the core shaft (1) is provided with a thread.

4. The variable diameter grouting anchoring device according to claim 1, characterized in that: A sealing mechanism (9) is provided between the outer wall of the grouting pipe (3) and the inner wall of the grouting container (7).

5. The variable diameter grouting anchoring device according to claim 4, characterized in that: The sealing mechanism (9) comprises at least one sealing ring, The sealing ring is arranged in the horizontal direction along the circumference of the grouting pipe (3).

6. The variable diameter grouting anchoring device according to claim 1, characterized in that: It also includes transverse flexible reinforcing ribs (13), The transverse flexible reinforcing rib (13) is wound around the outer circumference of the diameter-expanding rod (12) in the circumferential direction.

7. The variable diameter grouting anchoring device according to claim 3 is characterized in that: It also includes an outer cover (14), an upper connecting piece (15) and a lower connecting piece (16), The outer cover (14) is arranged outside the diameter-expanding rod (12); The upper part of the outer cover (14) is fixedly connected to the core shaft (1) via an upper connecting piece (15); The lower part of the outer cover (14) is fixedly connected to the fixed shaft (2) via a lower connecting piece (16).

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