A mortar anchor rod grouting device

Abstract

The utility model discloses a mortar anchor rod grouting device mainly includes anchor rod, sealing cover, fixed lid, exhaust pipe and grouting pipe, wherein grouting pipe communicates with grouting machine, carries out the sealing to the drilling through sealing cover and rubber ring, then carries out the fixed of anchor rod through fixed lid, thereby the sealing of drilling and the fixed efficiency of anchor rod are faster, simultaneously, carry out grouting through grouting pipe, and the anchor rod is drilled into in multiple sectional exhaust pipe, carries out exhaust to the inside space of anchor rod of different height, and then reduces the consumption of slurry, and makes the effect of grouting better.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction, and in particular to a mortar anchor grouting device. Background Technology

[0002] During tunnel construction, it is often necessary to use anchor grouting to reinforce and consolidate rock and soil structures, thereby facilitating the stable progress of subsequent construction.

[0003] In existing technologies, for upward-facing holes, the "install first, then grout" method is used, such as the tunnel hollow anchor grouting device described in application number 201720652486.6. First, the anchor is installed, then the grouting pipe is installed, and an anchoring agent is used for sealing and fixing. Grouting is then performed, and once continuous grout return occurs, the anchor is sealed to complete the grouting process. However, in practice, some problems still need to be addressed:

[0004] 1. Using anchoring agents for sealing and fixing requires waiting for the anchoring agent to solidify. The solidification time varies depending on the type of anchoring agent, and it is generally quite long. For example, cement-based anchoring agents typically have an initial setting time of 3-4 minutes. Grouting is then performed 8-15 minutes after the initial setting to ensure structural strength. This process is time-consuming and requires experienced personnel. If problems arise during anchor installation, such as anchor misalignment or improper use of the anchoring agent, requiring re-anchoring, the anchoring agent must be destroyed and the anchoring process repeated, which is time-consuming and inefficient.

[0005] 2. If the anchor bolt is sealed only after continuous grout return, it will consume more grout and be difficult to clean later. In addition, if the hollow anchor bolt is sealed during continuous grout return, the grouting may not be dense and more grout may be wasted. Utility Model Content

[0006] The purpose of this utility model is to provide a mortar anchor grouting device to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A mortar anchor grouting device, characterized in that it includes an anchor rod disposed within a borehole, with external threads on the circumferential outer wall near the borehole opening, and an vent hole on the lower surface of the anchor rod; a sealing cap with a threaded hole in the center, through which the anchor rod is threadedly connected to the sealing cap, and a rubber ring on the outer edge of the sealing cap abutting against the inner wall of the borehole; a fixing cap with a threaded hole in the center, through which the anchor rod is threadedly connected to the fixing cap, and the lower end of the fixing cap is detachably connected to the outer wall of the borehole, the fixing cap being disposed below the sealing cap, and its upper surface abutting against and fitting against the lower surface of the sealing cap; a grouting pipe, one end of which passes sequentially through the fixing cap and the sealing cap and is disposed within the borehole, with the grouting pipe opening near the sealing cap on the upper surface inside the borehole, and the other end being disposed outside the borehole and connected to a grouting machine; and an vent pipe, one end of which is disposed within the anchor rod, and the vent pipe is threadedly connected to the vent hole.

[0009] In some embodiments, the sealing cap includes an upper cap and a lower cap, with a threaded hole at the center of the upper cap and a through hole at the center of the lower cap, which is adapted to the anchor rod. The outer edge of the lower cap has an circumferential groove, and a rubber ring is disposed in the circumferential groove. When both the sealing cap and the fixing cap are threadedly connected to the anchor rod, the upper surface of the upper cap and the lower surface of the lower cap abut and fit together, and the upper cap and the lower cap respectively squeeze the upper and lower sides of the rubber ring so that the rubber ring abuts against the inner wall of the borehole.

[0010] In some embodiments, the inner edge of the lower end cover is also provided with an circumferential groove, and a rubber ring is also provided in the circumferential groove. When the sealing cover and the fixing cover are both threadedly connected to the anchor rod, the upper end cover and the lower end cover respectively squeeze the upper side and the lower side of the rubber ring in the circumferential groove of the inner edge of the lower end cover, so that the rubber ring on one side of the inner edge of the lower end cover abuts against the circumferential outer wall of the anchor rod.

[0011] In some embodiments, the fixing cover includes a clamping end and a fixing end, both of which are provided with threaded holes. The diameter of the clamping end is smaller than the diameter of the fixing end. The clamping end is disposed inside the drilled hole, and its upper surface abuts and fits against the lower surface of the lower end cover. The fixing end is disposed outside the drilled hole and is connected to the wall at the drilled hole opening by a plurality of screws.

[0012] In some embodiments, the upper surface of the pressing end is provided with a limiting ring groove and is coaxially arranged with the pressing end, and the lower surface of the lower end cover is provided with a limiting ring block and is adapted to the limiting slide groove. When the upper surface of the pressing end abuts against the lower surface of the lower end cover, the limiting ring block is disposed in the limiting ring groove.

[0013] In some embodiments, the upper end cover, lower end cover, clamping end and fixing end are all provided with grouting holes. The opening of the grouting hole on the upper surface of the upper end cover is provided with an abutting block, and the abutting block is provided with an abutting hole. The abutting hole is coaxially arranged with the grouting hole and its diameter is smaller than that of the grouting hole of the upper end cover. The grouting pipe passes through multiple grouting holes and the abutting hole on the upper side of the grouting hole, and the inner wall of the abutting block abuts against the outer wall of the grouting pipe in the circumferential direction.

[0014] In some embodiments, the grouting pipe is connected to the grouting machine via a hose, and one end of the hose is connected to the grouting pipe via a switch valve.

[0015] In some embodiments, a marking line 81 is provided on the circumferential outer wall of the exhaust pipe, and the marking line 81 extends along the axial direction of the exhaust pipe.

[0016] In some embodiments, a switch valve is provided at one end of the exhaust pipe away from the bottom of the borehole, and a fixing head is provided on the outer wall of the circumference. The fixing head is threadedly connected to the exhaust pipe, and its upper surface abuts against and fits against the lower surface of the anchor rod.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] In this invention, the borehole is sealed by a sealing cap and a rubber ring, and the anchor rod is fixed by a fixing cap. This results in faster sealing of the borehole and faster fixing of the anchor rod. At the same time, grouting is performed through a grouting pipe, and the venting pipe is drilled into the anchor rod in multiple segments to vent the internal space of the anchor rod at different heights, thereby reducing grout consumption and improving the grouting effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front cross-sectional view of a mortar anchor grouting device according to an embodiment of this application;

[0021] Figure 2 This is a top view schematic diagram of the lower end cover of a mortar anchor grouting device according to an embodiment of this application;

[0022] Figure 3 This is a bottom view schematic diagram of the lower end cover of a mortar anchor grouting device according to an embodiment of this application;

[0023] Figure 4 This is a bottom view of the upper cover of a mortar anchor grouting device according to an embodiment of this application;

[0024] Figure 5 This is a bottom view of an anchor bolt of a mortar anchor bolt grouting device according to an embodiment of this application;

[0025] Figure 6 This is a front cross-sectional view of the upper end cover of a mortar anchor grouting device according to an embodiment of this application;

[0026] Figure 7 This is a front cross-sectional view of the fixing cover of a mortar anchor grouting device according to an embodiment of this application;

[0027] Figure 8 This is a top view schematic diagram of the fixing cover of a mortar anchor grouting device according to an embodiment of this application;

[0028] Figure 9 This is a bottom view schematic diagram of the fixing cover of a mortar anchor grouting device according to an embodiment of this application;

[0029] Figure 10 This is a front view of the exhaust pipe of a mortar anchor bolt grouting device according to an embodiment of this application;

[0030] Figure label:

[0031] 1-Anchor bolt, 11-Vent hole

[0032] 2-Sealing cap, 21-Upper end cap, 22-Lower end cap, 221-Through hole, 222-Circumferential groove, 223-Limiting ring block,

[0033] 3-Threaded hole,

[0034] 4-Rubber ring,

[0035] 5-Fixing cap, 51-Clamping end, 511-Limiting ring groove, 52-Fixing end, 521-Connecting hole,

[0036] 6-Grouting pipe,

[0037] 7-Grouting machine,

[0038] 8 - Exhaust pipe, 81 - Marker line

[0039] 9-Screw,

[0040] 10-Grouting hole,

[0041] 20 - Abutting block, 201 - Abutting hole

[0042] 30-Hose,

[0043] 40-Switch valve,

[0044] 50-Fixed head,

[0045] 60 - Drilling. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0049] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0050] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0053] It should be understood that using anchoring agents for sealing and fixing requires waiting for the anchoring agent to solidify. Depending on the type of anchoring agent, the solidification time varies and is generally quite long. For example, cement-based anchoring agents typically have an initial setting time of 3-4 minutes. Grouting is then performed 8-15 minutes after the initial setting to ensure structural strength, which is time-consuming and requires experienced personnel. If problems arise during anchor installation, such as anchor misalignment or improper use of anchoring agent requiring re-anchoring, the anchoring agent must be destroyed and the anchoring process repeated, which is time-consuming and inefficient.

[0054] Furthermore, sealing the anchor bolt when continuous grout return occurs will consume a lot of grout and be difficult to clean later. Also, sealing hollow anchor bolts when continuous grout return occurs can easily result in incomplete grouting.

[0055] To improve the above problems, this embodiment provides a mortar anchor grouting device, which mainly includes an anchor 1, a sealing cover 2, a fixing cover 5, a grouting pipe 6, and an exhaust pipe 8.

[0056] Among them, such as Figure 1 As shown, the anchor rod 1 is a hollow anchor rod 1 and is set inside the borehole 60. Specifically, the anchor rod 1 is coaxially set with the borehole 60, and one end is close to the bottom of the borehole 60.

[0057] Among them, such as Figure 1 and Figure 5 As shown, the outer circumferential wall near the borehole 60 is provided with external threads, and the lower end surface of the anchor rod 1 is provided with an exhaust hole 11 for venting during grouting and balancing the pressure inside the borehole 60.

[0058] In this embodiment, as Figures 1-4 As shown, the sealing cover 2 has a threaded hole 3 at its center, and the anchor rod 1 is threadedly connected to the sealing cover 2 through the threaded hole 3. The outer edge of the sealing cover 2 has a rubber ring 4, and the rubber ring 4 abuts against the inner wall of the drill hole 60. Specifically, the sealing cover 2 includes an upper end cover 21 and a lower end cover 22. The upper end cover 21 has a threaded hole 3 at its center, and the lower end cover 22 has a through hole 221 at its center, which is adapted to the anchor rod 1. The outer and inner edges of the lower end cover 22 are both provided with circumferential grooves 222, and the circumferential grooves 222 are provided with circumferential grooves 222. Each of the 22 sections is equipped with a rubber ring 4. The cross-section of the circumferential groove 222 along the axial direction of the lower end cover 22 adopts an L-shaped structure so that the outer side and upper side of the outer edge rubber ring 4 can respectively abut against the inner wall of the borehole 60 and the lower surface of the upper end cover 21. The inner side and upper side of the inner edge rubber ring 4 of the lower end cover 22 can respectively abut against the outer wall of the anchor rod 1 in the circumferential direction and the lower surface of the upper end cover 21, thereby sealing the borehole 60 and ensuring good sealing during grouting.

[0059] In this embodiment, as Figure 1 as well as Figures 7-9As shown, the fixed cover 5 has a threaded hole 3 in the center, and the anchor rod 1 is threadedly connected to the fixed cover 5 through the threaded hole 3. The lower end of the fixed cover 5 is detachably connected to the outer wall of the drill hole 60. The fixed cover 5 is located below the sealing cover 2, and its upper surface abuts and fits against the lower surface of the sealing cover 2. Specifically, the fixed cover 5 includes a pressing end 51 and a fixing end 52, both of which are provided with threaded holes 3. The diameter of the pressing end 51 is smaller than the diameter of the fixing end 52. The pressing end 51 is located inside the drill hole 60, and its outer wall in the circumferential direction is close to the inner wall of the drill hole 60. The upper surface of the pressing cover abuts and fits against the lower surface of the lower end cover 22. The fixing end 52 is located outside the drill hole 60 and is connected to the wall at the opening of the drill hole 60 by multiple screws 9. The fixing end 52 is provided with multiple connecting holes 521, which are arranged sequentially and spaced apart along the circumference of the fixing end 52. The multiple screws 9 pass through the multiple connecting holes 521 respectively.

[0060] In this embodiment, when both the sealing cap 2 and the fixing cap 5 are threadedly connected to the anchor rod 1, the upper end cap 21 of the sealing cap 2 is threadedly connected to the anchor rod 1, and the two rubber rings 4 are respectively fitted into the circumferential grooves 222 on the outer and inner edges of the lower end cap 22. At the same time, the pressing end 51 and the fixing end 52 of the fixing cap 5 are threadedly connected to the anchor rod 1, and the fixing end 52 is fixedly connected to the outer wall of the wall at the drill hole 60 by screws 9, so that the upper surface of the pressing end 51 of the fixing cap 5 abuts and fits against the lower surface of the lower end cap 22 of the sealing cap 2, thereby abutting and fitting the upper surface of the lower end cap 22 and the lower surface of the upper end cap 21, thereby squeezing the upper and lower sides of the rubber rings 4, so that the rubber rings 4 on the outer edge of the lower end cap 22 abut against the inner wall of the drill hole 60, and the rubber rings 4 on the inner edge abut against the outer wall of the anchor rod 1, thereby sealing the drill hole 60.

[0061] The upper end cover 21, the lower end cover 22, the pressing end 51, and the fixing end 52 all adopt a cylindrical structure.

[0062] In this embodiment, as Figure 1 , Figure 3 , Figure 7 and Figure 8 As shown, the upper surface of the pressing end 51 is provided with a limiting ring groove 511 and is coaxially arranged with the pressing end 51. The lower surface of the lower end cover 22 is provided with a limiting ring block 223 and is adapted to the limiting slide groove. When the lower end cover 22 is installed, the lower end cover 22 is placed on the upper side of the pressing end 51 and the lower end cover 22 is limited by the limiting ring groove 511 and the limiting ring block 223. Then the fixing cover 5 is threadedly connected to the anchor rod 1. During this process, when both rubber rings 4 of the lower end cover 22 abut against the lower surface of the upper end cover 21, the fixing cover 5 rotates relative to the lower end cover 22 and squeezes the lower end cover 22, thereby causing the lower end cover 22 to abut against and fit against the upper end, thus causing the rubber rings 4 to be squeezed.

[0063] In this embodiment, as Figure 1As shown, one end of the vent pipe 8 is located inside the anchor bolt 1 and is threadedly connected to the vent hole 11. One end of the grouting pipe 6 passes through the fixing cover 5 and the sealing cover 2 in sequence and is located inside the borehole 60. The opening of the grouting pipe 6 is located near the sealing cover 2 on the upper surface inside the borehole 60, and the other end is located outside the borehole 60 and is connected to the grouting machine 7. Specifically, the upper end cover 21, the lower end cover 22, the clamping end 51, and the fixing end 52 are all provided with grouting holes 10. One end of the vent pipe 8 passes through the grouting hole 10, and... The grouting pipe 6 is installed inside the borehole 60 and is connected to the grouting machine 7 via a hose 30. One end of the hose 30 is connected to the grouting pipe 6 via a switch valve 40, thereby grouting the borehole 60. The grouting pipe 6 can be blocked by the switch valve 40, so that the grouting machine 7 can be disassembled from the grouting pipe 6 after grouting is completed, thus completing the grouting work of the remaining boreholes 60. The grouting pipe 6 and the hose 30 are connected by connecting flanges and other connecting structures.

[0064] Among them, the grouting machine 7 is existing technology and will not be described in detail.

[0065] Among them, such as Figure 1 and Figure 6 As shown, an abutting block 20 is provided at the opening of the grouting hole 10 on the upper surface of the upper end cover 21, and an abutting hole 201 is provided at the center of the abutting block 20. The abutting hole 201 is coaxially arranged with the grouting hole 10 of the upper end cover 21, and its diameter is smaller than that of the grouting hole 10 of the upper end cover 21. The grouting pipe 6 passes through multiple grouting holes 10 and the abutting hole 201 on the upper side of the grouting hole 10, and the inner side wall of the abutting block 20 abuts against the outer wall of the grouting pipe 6 in the circumferential direction, thereby sealing the grouting hole 10 and the abutting hole 201. The abutting block 20 is fixedly connected to the upper end cover 21.

[0066] In this embodiment, as Figure 1 As shown, a switch valve 40 is provided at the end of the exhaust pipe 8 away from the bottom of the borehole 60 to block the exhaust pipe 8. In addition, a fixing head 50 is provided on the outer wall of the exhaust pipe 8 around its periphery. The fixing head 50 is threadedly connected to the exhaust pipe 8, and its upper surface abuts and fits against the lower surface of the anchor rod 1, thereby fixing the exhaust pipe 8.

[0067] In this embodiment, as Figure 1 and Figure 10As shown, the outer wall of the exhaust pipe 8 is provided with multiple marking lines 81. The marking lines 81 extend circumferentially along the exhaust pipe, and the multiple marking lines 81 are arranged sequentially at intervals along the axial direction of the exhaust pipe 8, so that the length of the exhaust pipe 8 inserted into the anchor rod 1 is controllable. When grouting is performed, the grout on the outside of the anchor rod 1 is injected from bottom to top until the grout reaches the opening of the anchor rod 1 near the bottom of the borehole 60. At this time, the grout enters the anchor rod 1 through the opening and fills the anchor rod 1. When the grout height in the anchor rod 1 first reaches the opening of the exhaust pipe 8, and the flow is continuous... When the grout returns through the vent pipe 8, turn the vent pipe 8 so that one end of the vent pipe 8 moves towards the bottom of the borehole 60 by a preset length. At this time, the grouting does not stop. When the grout reaches the opening of the vent pipe 8 for the second time and returns through the vent pipe 8, turn the vent pipe 8 again so that the vent pipe 8 moves by a preset length. At this time, the grouting still does not stop. Then repeat the above steps many times until the preset number of times is completed. On the last time, observe that the grout continuously and uninterruptedly turns through the vent pipe 8 for a preset time. Then stop the grouting, close the switch valve 40, and seal the vent pipe 8 to complete the grouting.

[0068] In this way, because the vent pipe 8 enters the anchor rod 1 in multiple segments and the grouting progress is observed through the vent pipe 8, the situation of excessive grout consumption caused by the need for continuous grouting for a long time to seal the grout when the anchor rod 1 is directly used as the vent pipe 8 is avoided. Furthermore, the grouting progress in the anchor rod 1 is controllable, resulting in a better and denser grouting effect.

[0069] The number of times the exhaust pipe 8 enters the anchor bolt 1 in segments and the length of each segment entering the anchor bolt 1 can be determined based on the length of the anchor bolt 1, the grouting speed, and the length of the exhaust pipe.

[0070] During grouting, the upper end cap 21 of the sealing cap 2 is first threadedly connected to the anchor rod 1. Then, the lower end cap 22 is placed on the pressing end 51 of the fixing cap 5. The fixing cap 5 is then installed so that the lower end cap 22 and the upper end cap 21 abut and fit together, thereby squeezing the rubber ring 4 and sealing the drill hole 60 with the two rubber rings 4. Then, the grouting pipe 6 is inserted into the grouting hole 10, and the vent pipe 8 is inserted into the anchor rod 1. Grouting is then performed. After one end of the vent pipe 8 has completed a preset number of displacements, grouting is stopped.

Claims

1. A mortar-anchoring-rod grouting device, characterized by, include: An anchor rod (1) is installed inside a drill hole (60), and the outer circumferential wall near the opening of the drill hole (60) is provided with external threads. The lower end surface of the anchor rod (1) is provided with an exhaust hole (11). The sealing cover (2) has a threaded hole (3) in the center, and the anchor rod (1) is threadedly connected to the sealing cover (2) through the threaded hole (3). The outer edge of the sealing cover (2) is provided with a rubber ring (4), and the rubber ring (4) abuts against the inner wall of the drill hole (60). The fixed cover (5) has a threaded hole (3) in the center, and the anchor rod (1) is threadedly connected to the fixed cover (5) through the threaded hole (3). The lower end of the fixed cover (5) is detachably connected to the outer wall of the drill hole (60). The fixed cover (5) is located on the lower side of the sealing cover (2), and its upper surface abuts against and fits against the lower surface of the sealing cover (2). The grouting pipe (6) passes through the fixed cover (5) and the sealing cover (2) at one end and is located inside the borehole (60). The opening of the grouting pipe (6) is located on the upper surface of the borehole (60) near the sealing cover (2), and the other end is located outside the borehole (60) and is connected to the grouting machine (7). An exhaust pipe (8) is installed at one end inside the anchor rod (1), and the exhaust pipe (8) is threadedly connected to the exhaust hole (11).

2. A mortar bolting grout device according to claim 1, characterised in that: The sealing cap (2) includes an upper cap (21) and a lower cap (22). The upper cap (21) has a threaded hole (3) in the center, and the lower cap (22) has a through hole (221) in the center, which is adapted to the anchor rod (1). The lower cap (22) has an circumferential groove (222) on its outer edge. The rubber ring (4) is placed in the circumferential groove (222). When the sealing cap (2) and the fixing cap (5) are threadedly connected to the anchor rod (1), the upper surface of the upper cap (21) and the lower surface of the lower cap (22) abut and fit together. The upper cap (21) and the lower cap (22) respectively squeeze the upper and lower sides of the rubber ring (4) so ​​that the rubber ring (4) abuts against the inner wall of the drill hole (60).

3. A mortar bolting grout device according to claim 2, wherein: The lower end cover (22) is also provided with an circumferential groove (222) on its inner edge, and a rubber ring (4) is also provided in the circumferential groove (222). When the sealing cover (2) and the fixing cover (5) are threadedly connected to the anchor rod (1), the upper end cover (21) and the lower end cover (22) respectively squeeze the upper and lower sides of the rubber ring (4) in the circumferential groove (222) on the inner edge of the lower end cover (22) so that the rubber ring (4) on one side of the inner edge of the lower end cover (22) abuts against the circumferential outer wall of the anchor rod (1).

4. A mortar bolting grout device according to claim 3, wherein: The fixed cover (5) includes a pressing end (51) and a fixing end (52), both of which are provided with threaded holes (3). The diameter of the pressing end (51) is smaller than that of the fixing end (52). The pressing end (51) is located inside the drill hole (60), and its upper surface abuts against and fits against the lower surface of the lower end cover (22). The fixing end (52) is located outside the drill hole (60) and is connected to the wall outside the drill hole (60) by multiple screws (9).

5. A mortar bolting grout device according to claim 4, wherein: The upper surface of the pressing end (51) is provided with a limiting ring groove (511) and is coaxially arranged with the pressing end (51). The lower surface of the lower end cover (22) is provided with a limiting ring block (223) and is adapted to the limiting ring groove (511). When the upper surface of the pressing end (51) abuts against the lower surface of the lower end cover (22), the limiting ring block (223) is arranged in the limiting ring groove (511).

6. The mortar-anchoring-rod grouting device according to claim 2, characterized in that: The upper end cover (21), lower end cover (22), pressing end (51) and fixing end (52) are all provided with grouting holes (10). The upper end cover (21) has an abutting block (20) at the opening of the grouting hole (10) on the upper surface of the upper end cover (21), and the abutting block (20) has an abutting hole (201). The abutting hole (201) is coaxially arranged with the grouting hole (10) and its diameter is smaller than that of the grouting hole (10) of the upper end cover (21). The grouting pipe (6) passes through multiple grouting holes (10) and the abutting hole (201) on the upper side of the grouting hole (10), and the inner wall of the abutting block (20) abuts against the outer wall of the grouting pipe (6) in the circumferential direction.

7. A mortar bolting grout device according to claim 6, wherein: The grouting pipe (6) is connected to the grouting machine (7) via a hose (30), and one end of the hose (30) is connected to the grouting pipe (6) via a switch valve (40).

8. The mortar-anchoring-rod grouting device according to claim 1, characterized in that: The exhaust pipe (8) has multiple marking lines (81) on its circumferential outer wall, and the multiple marking lines (81) are arranged sequentially at intervals along the axial direction of the exhaust pipe (8).

9. A mortar bolting grout device according to claim 8, wherein: The exhaust pipe (8) is provided with a switch valve (40) at one end away from the bottom of the borehole (60), and a fixing head (50) is provided on the outer wall of the circumference. The fixing head (50) is threadedly connected to the exhaust pipe (8), and its upper surface abuts against and fits against the lower surface of the anchor rod (1).

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