Grouting head and grouting system suitable for pipe and cable combined type anchoring structure

Abstract

The utility model relates to the technical field of supporting structures, in particular to a grouting head and a grouting system suitable for a pipe and cable combined type anchoring structure, the grouting head comprises a grouting head, an outer sleeve and an inner sleeve, a cavity is formed in the grouting head, and a grouting nozzle is arranged on the cavity wall of the cavity in a penetrating mode; the outer sleeve sleeves the outer side of the inner sleeve, a first channel is formed between the outer sleeve and the inner sleeve, and the first channel is communicated with the cavity; the inner sleeve is separated from the cavity; the grouting nozzle is used for receiving external grout and enabling the external grout to enter the cavity, the outer sleeve is arranged on the outer side of the inner sleeve in a sleeving mode, a first channel is formed between the outer sleeve and the inner sleeve, and the first channel is communicated with the cavity, so that the grout entering the cavity flows into the first channel, grouting of the hollow anchor rod is facilitated, further, the inner sleeve is separated from the cavity, and the grouting effect is improved. The anchor cable penetrates through the inner sleeve, the anchor cable is separated from the cavity, and therefore when the grouting head is installed on the pipe-cable combined type anchoring structure, the grouting head and the anchor cable cannot interfere with each other.

Description

Technical Field

[0001] This utility model relates to the field of support structure technology, and in particular to a grouting head and grouting system suitable for cable-tube composite anchoring structures. Background Technology

[0002] In the field of simply supported rock technology, rock bolt support is a commonly used support technique in the construction of modern tunnels, roadways, and subways. Rock bolts can alter the mechanical state of the surrounding rock, and through the combined action of the rock bolts and the surrounding rock, the stability of tunnels, roadways, and subways can be maintained. Rock bolt support is characterized by its simple process and good support effect.

[0003] Anchor cable support is a relatively new support technology. Anchor cables can apply prestress to the reinforced rock mass, improve the mechanical properties of the rock mass, effectively limit the development of harmful deformation of the rock mass, and have a large bearing capacity and can apply a large preload.

[0004] Since anchor bolts and anchor cables cannot effectively utilize their characteristics when used alone, a current practice involves placing the anchor cable inside the anchor bolt to form a pipe-cable composite anchoring structure. However, because the anchor cable is located inside the anchor bolt, conventional methods are insufficient for effective grouting of the anchor bolt-anchor cable combination. For example, if a conventional grouting pipe is used to grout the anchor bolt, interference may occur between the grouting pipe and the anchor cable. Alternatively, inserting the grouting pipe between the anchor bolt and the anchor cable may be problematic, as the small distance between them necessitates the use of a smaller diameter grouting pipe, which negatively impacts the grouting effect. Utility Model Content

[0005] The purpose of this invention is to address the problem that conventional methods are currently insufficient for effectively grouting tubular-cable composite anchorage structures, and to provide a grouting head and grouting system suitable for tubular-cable composite anchorage structures.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A grouting head suitable for cable-tube composite anchoring structures includes a grouting head, an outer sleeve, and an inner sleeve, wherein:

[0008] The grouting head has a cavity inside, and a grouting nozzle is provided through the cavity wall;

[0009] The outer sleeve is fitted over the outer side of the inner sleeve, and a first channel is formed between the outer sleeve and the inner sleeve, the first channel being connected to the cavity;

[0010] The inner sleeve is separated from the cavity.

[0011] This application describes a grouting head suitable for cable-tube composite anchoring structures. The grouting head has an internal cavity, and a grouting nozzle is perforated in the cavity wall to receive external grout, allowing it to enter the cavity. An outer sleeve is fitted over the inner sleeve, forming a first channel that communicates with the cavity. This allows the grout entering the cavity to flow into the first channel, facilitating grouting of the hollow anchor. Furthermore, the inner sleeve is separated from the cavity, and the anchor cable passes through the inner sleeve, further isolating the anchor cable from the cavity. This allows the grouting head to be installed on the cable-tube structure. In composite anchoring structures, the grouting head and anchor cable do not interfere with each other. The grouting head of this application is applied to a pipe-cable composite anchoring structure. The outer sleeve is threaded to the top of the hollow anchor rod, and the inner sleeve is inserted into the hollow anchor rod. The anchor cable passes through the inner sleeve, so that the cavity is connected to the inside of the hollow anchor rod through the first channel. Then, the external grout is injected into the cavity of the grouting head. The grout passes through the cavity and the first channel in sequence and enters the inside of the hollow anchor rod, thereby grouting the pipe-cable composite anchoring structure. This effectively solves the problem that existing conventional methods are difficult to effectively grout pipe-cable composite anchoring structures.

[0012] As a preferred embodiment of this utility model, the inner sleeve penetrates the cavity, facilitating the anchor cable to extend to the outside of the grouting head after passing through the inner sleeve.

[0013] As a preferred embodiment of this utility model, the grouting head includes a shell, the shell forming a closed structure, and the cavity being formed inside the shell;

[0014] The outer sleeve is connected to one side of the housing, and the inner sleeve penetrates the housing.

[0015] As a preferred embodiment of this utility model, a through hole is provided at the bottom of the housing, and the cavity is connected to the first channel through the through hole.

[0016] As a preferred embodiment of this utility model, the through hole is located between the outer sleeve and the inner sleeve.

[0017] As a preferred embodiment of this utility model, the through holes are arranged at intervals around the inner sleeve in a circumferential direction.

[0018] As a preferred embodiment of this utility model, the inner sleeve extends to the outside of the outer sleeve.

[0019] The inner sleeve extends to the outside of the outer sleeve, meaning the inner sleeve is longer than the outer sleeve. During grouting, the grout can flow downwards along the outer wall of the inner sleeve and the inner wall of the hollow anchor rod, resulting in better grouting effect and greatly improving grouting efficiency.

[0020] As a preferred embodiment of this utility model, the grouting head is cylindrical;

[0021] The axis of the grouting head coincides with the axis of the inner sleeve;

[0022] The axis of the outer sleeve coincides with the axis of the inner sleeve.

[0023] This application also discloses a grouting system, including a grouting machine and a grouting head suitable for cable-tube composite anchoring structures as described in this application. The outer sleeve is used to connect to the top of the hollow anchor rod, and the inner sleeve is used to insert into the hollow anchor rod, with the anchor cable passing through the inner sleeve.

[0024] The grouting machine is used to inject grout into the cavity.

[0025] The grouting system of this application involves installing the grouting head on the hollow anchor rod. First, the outer sleeve is threaded to the top of the hollow anchor rod, and the inner sleeve is inserted into the hollow anchor rod. The anchor cable passes through the inner sleeve. Then, the grouting machine is connected to the grouting nozzle, and grout is injected into the cavity through the grouting machine. This allows the grout in the cavity to flow into the hollow anchor rod through the first channel for grouting. Since the anchor cable passes through the inner sleeve, there is no interference between the anchor cable and the grouting head when installing the grouting head. This solves the problem of the difficulty in effectively grouting pipe-cable composite anchoring structures using existing conventional methods.

[0026] As a preferred embodiment of this utility model, it further includes a sealing ring, which is located at the top of the grouting head and is used to be sleeved on the anchor cable.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] 1. The grouting head applicable to a pipe-cable composite anchoring structure as described in this application has an internal cavity. A grouting nozzle is perforated in the cavity wall to receive external grout, allowing it to enter the cavity. An outer sleeve is fitted over the inner sleeve, forming a first channel that communicates with the cavity. This allows the grout entering the cavity to flow into the first channel, facilitating grouting of the hollow anchor. Furthermore, the inner sleeve is separated from the cavity, and the anchor cable passes through the inner sleeve, further isolating the anchor cable from the cavity. This allows the grouting head to be installed on the pipe-cable composite anchoring structure. In cable-and-tube composite anchoring structures, the grouting head and the anchor cable will not interfere with each other. The grouting head of this application is applied to cable-and-tube composite anchoring structures. The outer sleeve is threadedly connected to the top of the hollow anchor rod, and the inner sleeve is inserted into the hollow anchor rod. The anchor cable passes through the inner sleeve, so that the cavity is connected to the inside of the hollow anchor rod through the first channel. Then, the external grout is injected into the cavity of the grouting head. The grout passes through the cavity and the first channel in sequence and enters the inside of the hollow anchor rod, thereby grouting the cable-and-tube composite anchoring structure. This effectively solves the problem that existing conventional methods are difficult to effectively grout cable-and-tube composite anchoring structures.

[0029] 2. The grouting system described in this application involves installing the grouting head on the hollow anchor rod. First, the outer sleeve is threaded onto the top of the hollow anchor rod, and the inner sleeve is inserted into the hollow anchor rod. The anchor cable passes through the inner sleeve. Then, the grouting machine is connected to the grouting nozzle, and grout is injected into the cavity through the grouting machine. This allows the grout in the cavity to flow into the hollow anchor rod through the first channel for grouting. Since the anchor cable passes through the inner sleeve, there is no interference between the anchor cable and the grouting head during installation. This solves the problem of effective grouting of pipe-cable composite anchoring structures using existing conventional methods. Attached Figure Description

[0030] Figure 1 This is the front view of the grouting head in this application.

[0031] Figure 2 This is a top view of the grouting head in this application.

[0032] Figure 3 yes Figure 1 A sectional view.

[0033] Figure 4 yes Figure 3 Sectional view at point AA.

[0034] Figure 5 This is a schematic diagram illustrating the use of the grouting head in this application.

[0035] Figure 6 yes Figure 5 Top view.

[0036] Figure 7 This is a schematic diagram of the grouting system structure of this application.

[0037] The markings in the diagram are: 1-grouting head, 11-shell, 12-through hole, 2-grouting nozzle, 3-outer sleeve, 4-inner sleeve, 5-cavity, 6-hollow anchor rod, 7-anchor cable, 8-pad plate, 9-first channel, 30-sealing ring, 40-grouting pipe, 50-grouting machine. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0039] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0041] Furthermore, in the description of the embodiments of this utility model, "multiple" or "several" means at least two. It can be any number of two, three, four, five, six, seven, eight, nine, or even more than nine.

[0042] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0043] Example 1

[0044] like Figures 1-6 As shown in the figure, the grouting head suitable for cable-tube composite anchoring structures described in this embodiment includes a grouting head 1, an outer sleeve 3, and an inner sleeve 4, wherein:

[0045] The grouting head 1 has a cavity 5 inside, and a grouting nozzle 2 is provided through the cavity wall of the cavity 5.

[0046] The outer sleeve 3 is fitted outside the inner sleeve 4, and a first channel 9 is formed between the outer sleeve 3 and the inner sleeve 4. The first channel 9 is connected to the cavity 5.

[0047] The inner sleeve 4 is separated from the cavity 5.

[0048] The grouting head 1 has a cavity 5 inside, and a grouting nozzle 2 is installed through the cavity wall of the cavity 5. The grouting nozzle 2 is used to receive external grout, allowing the external grout to enter the cavity 5. The outer sleeve 3 is sleeved outside the inner sleeve 4, and a first channel 9 is formed between the outer sleeve 3 and the inner sleeve 4. The first channel 9 is connected to the cavity 5, so that the grout entering the cavity 5 flows into the first channel 9, thereby facilitating the grouting of the hollow anchor rod 6. Furthermore, the inner sleeve 4 is separated from the cavity 5, and the anchor cable 7 passes through the inner sleeve 4, separating the anchor cable 7 from the cavity 5, so that when the grouting head is installed on the pipe-cable composite anchoring structure... The grouting head and the anchor cable 7 will not interfere with each other. The grouting head of this application is used in a pipe-cable composite anchoring structure. The outer sleeve 3 is threaded to the top of the hollow anchor rod 6, and the inner sleeve 4 is inserted into the hollow anchor rod 6. The anchor cable 7 passes through the inner sleeve 4, so that the cavity 5 is connected to the inside of the hollow anchor rod 6 through the first channel 9. Then, the external grout is injected into the cavity 5 of the grouting head 1. The grout passes through the cavity 5 and the first channel 9 in sequence and enters the inside of the hollow anchor rod 1, thereby grouting the pipe-cable composite anchoring structure. This effectively solves the problem that existing conventional methods are difficult to effectively grout pipe-cable composite anchoring structures.

[0049] like Figure 3 As shown, the inner sleeve 4 penetrates the cavity 5. This facilitates the anchor cable 7 extending from the inner sleeve 4 to the outside of the grouting head 1.

[0050] like Figure 3 , Figure 5 As shown, the grouting head 1 includes a housing 11, which forms a closed structure, and a cavity 5 is formed inside the housing 11.

[0051] The outer sleeve 3 is connected to one side of the housing 11, and the inner sleeve 4 penetrates the housing 11.

[0052] The cavity 5 is formed by enclosing the shell 11 into a closed structure to receive external slurry. The outer sleeve 3 is connected to the bottom of the shell 11 and communicates with the cavity 5, so that the slurry in the cavity 5 flows into the outer sleeve 3 and then into the hollow anchor rod 6 through the outer sleeve 3.

[0053] like Figures 3-4 As shown, a through hole 12 is provided at the bottom of the housing 11, and the cavity 5 is connected to the first channel 9 through the through hole 12. By providing a through hole 12 at the bottom of the housing 11, the cavity 5 is connected to the first channel 9, allowing the slurry to enter the first channel 9 through the through hole 12.

[0054] like Figures 3-4 As shown, the through hole 12 is located between the outer sleeve 3 and the inner sleeve 4, thereby ensuring that the slurry enters the area between the outer sleeve 3 and the inner sleeve 4, and preventing the slurry from overflowing outside the outer sleeve 3 or entering inside the inner sleeve 4.

[0055] Furthermore, through holes 12 are spaced circumferentially around the inner sleeve 4. This allows the slurry to enter the first channel 9 evenly, wherein the number of through holes 12 is greater than or equal to 3.

[0056] like Figure 3 , Figure 5 As shown, the inner sleeve 4 extends to the outside of the outer sleeve 3, meaning the inner sleeve 4 is longer than the outer sleeve 3. During grouting, the grout can flow downwards along the outer wall of the inner sleeve 4 and the inner wall of the hollow anchor rod 6, resulting in better grouting effect and greatly improving grouting efficiency.

[0057] A preferred method, such as Figure 3 , Figure 5 As shown, the axis of the outer sleeve 3 coincides with the axis of the inner sleeve 4, that is, the outer sleeve 3 and the inner sleeve 4 are coaxially arranged, so that the outer sleeve 3 and the inner sleeve 4 are evenly spaced, and the grout can flow evenly from the outer sleeve 3 and the inner sleeve 4 to the hollow anchor rod 6 during grouting.

[0058] A preferred method, such as Figure 3 , Figure 5 As shown, the grouting head 1 is cylindrical;

[0059] The axis of the grouting head 1 coincides with the axis of the inner sleeve 4.

[0060] The inner sleeve 4 is positioned at the center of the grouting head 1, resulting in a more reasonable layout. The grouting head 1 is cylindrical, meaning the shell 11 is a hollow cylinder. The axes of the inner sleeve 4, the shell 11, and the outer sleeve 3 all coincide.

[0061] like Figures 1-4 As shown, the grouting nozzle 2 is located on the side wall of the grouting head 1 and is connected to the cavity 5. The grouting nozzle 2 is used to connect the grouting pipe, and external grout enters the cavity 5 through the grouting nozzle 2 for grouting.

[0062] Example 2

[0063] like Figures 5-7 As shown, this embodiment discloses a grouting system, including the grouting head described in Embodiment 1, an outer sleeve 3 for connecting to the top of the hollow anchor rod 6, an inner sleeve 4 for inserting into the interior of the hollow anchor rod 6, and an anchor cable 7 passing through the inner sleeve 4.

[0064] It also includes a grouting machine 50, which is used to inject grout into the cavity 5.

[0065] In use, the grouting head is installed on the hollow anchor rod 6. First, the outer sleeve 3 is threaded to the top of the hollow anchor rod 6, and the inner sleeve 4 is inserted into the hollow anchor rod 6. The anchor cable 7 passes through the inner sleeve 4. Then, the grouting machine 50 is connected to the grouting nozzle 2. Grout is injected into the cavity 5 through the grouting machine 50, so that the grout in the cavity 5 flows into the hollow anchor rod 6 through the first channel 9 for grouting. The anchor cable 7 passes through the inner sleeve 4. When installing the grouting head, the anchor 7 will not interfere with the grouting head 1, which solves the problem that it is difficult to effectively grout the pipe-cable composite anchoring structure using existing conventional methods.

[0066] A preferred method, such as Figures 5-6 As shown, it also includes a sealing ring 30, which is located at the top of the grouting head 1. The sealing ring 30 is used to fit on the anchor cable 7 and to seal the anchor cable 7 and the inner sleeve 4 to prevent grout from overflowing from the top of the inner sleeve 4.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grouting head suitable for cable-tube composite anchoring structures, characterized in that, It includes a grouting head (1), an outer sleeve (3), and an inner sleeve (4), wherein: The grouting head (1) has a cavity (5) inside, and a grouting nozzle (2) is provided through the cavity wall of the cavity (5); The outer sleeve (3) is sleeved on the outside of the inner sleeve (4), and a first channel (9) is formed between the outer sleeve (3) and the inner sleeve (4), and the first channel (9) is connected to the cavity (5); The inner sleeve (4) is separated from the cavity (5).

2. A grouting head suitable for cable-tube composite anchoring structures according to claim 1, characterized in that, The inner sleeve (4) penetrates the cavity (5).

3. A grouting head suitable for cable-tube composite anchoring structures according to claim 1, characterized in that, The grouting head (1) includes a housing (11), which forms a closed structure, and the cavity (5) is formed inside the housing (11); The outer sleeve (3) is connected to one side of the housing (11), and the inner sleeve (4) penetrates the housing (11).

4. A grouting head suitable for cable-tube composite anchoring structures according to claim 3, characterized in that, The bottom of the housing (11) is provided with a through hole (12), and the cavity (5) is connected to the first channel (9) through the through hole (12).

5. A grouting head suitable for cable-tube composite anchoring structures according to claim 4, characterized in that, The through hole (12) is located between the outer sleeve (3) and the inner sleeve (4).

6. A grouting head suitable for cable-tube composite anchoring structures according to claim 5, characterized in that, The through holes (12) are spaced around the inner sleeve (4) in a circumferential manner.

7. A grouting head suitable for cable-tube composite anchoring structures according to any one of claims 1-6, characterized in that, The inner sleeve (4) extends to the outside of the outer sleeve (3).

8. A grouting head suitable for cable-tube composite anchoring structures according to claim 7, characterized in that, The grouting head (1) is cylindrical; The axis of the grouting head (1) coincides with the axis of the inner sleeve (4); The axis of the outer sleeve (3) coincides with the axis of the inner sleeve (4).

9. A grouting system, characterized in that, Includes a grouting machine (50) and a grouting head suitable for a pipe-cable composite anchoring structure as described in any one of claims 1-8, wherein the outer sleeve (3) is used to connect to the top of the hollow anchor rod (6), the inner sleeve (4) is used to insert into the hollow anchor rod (6), and the anchor cable (7) passes through the inner sleeve (4); The grouting machine (50) is used to inject grout into the cavity (5).

10. A grouting system according to claim 9, characterized in that, It also includes a sealing ring (30), which is located on top of the grouting head (1) and is used to be fitted onto the anchor cable (7).

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