Equipment for grouting inclined anchor rod

Abstract

The utility model discloses equipment for grouting an upward inclined anchor rod, which comprises a protective cover covered outside an orifice of an anchor rod drilling hole, the end part of the opening end of the protective cover is vertically provided with an inserting groove in a penetrating manner, the protective cover is fixed on a structural body on the outer side of the orifice of the anchor rod drilling hole through a fixing piece, and the end surface of the opening end of the protective cover is tightly attached to the structural body; an inserting groove is formed in the protection cover, an opening and closing device for closing the inserting groove during grouting and opening the inserting groove after grouting is completed is arranged in the protection cover, an anchor rod mounting hole for mounting the inclined anchor rod is formed in the protection cover, and an annular limiting groove is formed in the position, corresponding to the inserting groove, of the inclined anchor rod, and the grouting protection plate is used for separating grout in an anchor rod drill hole and grout in the protection cover after grouting is completed. The grouting protection plate is formed by seamlessly splicing two plates which extend into the limiting grooves from the two ends of the inserting groove respectively, the two plates are connected with the protection cover through connecting pieces respectively, the protection cover is further provided with a grouting hole and a pressure monitoring hole, the grouting hole is connected with a grouting machine through a grouting pipe, and the pressure monitoring hole is connected with pressure monitoring equipment through a monitoring pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rod grouting, in particular to a device used for inclined anchor rod grouting. Background Art

[0002] At present, most of the traditional anchor rods used at home and abroad are inclined. From the perspective of the stress performance of anchor rods, the tensile strength of anchor rods is stronger than the shear strength of anchor rods. Therefore, the traditional inclined anchor rod arrangement method is not conducive to giving full play to the stress performance of anchor rods. However, the reason why inclined anchor rods have not been promoted and applied in the field of engineering construction is limited by construction technology, especially the grouting technology of inclined anchor rods. Due to the layout structure of inclined anchor rods, the grouting port is downward, and grouting from bottom to top requires greater pressure. There is also the possibility that after grouting is completed, the slurry will automatically slip out or even spray out due to gravity, making the grouting saturation of the anchor rod not meet the requirements, thus affecting the construction quality. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a device for grouting of inclined anchor rods, so as to solve the technical problem that the grouting liquid of the existing grouting equipment of inclined anchor rods may automatically slip out or even spray out after the grouting is completed.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A device for grouting an inclined anchor, comprising a protective cover covering the outside of an anchor borehole, an opening end portion of the protective cover being vertically penetrated by a plug-in groove, the protective cover being fixed to a structure outside the anchor borehole by a fixing piece and an end face of the opening end being closely attached to the structure, a shutter for closing the plug-in groove during grouting and opening the plug-in groove after grouting is completed is arranged in the protective cover, an anchor mounting hole for installing the inclined anchor is arranged on the protective cover, an annular limit groove is arranged on the inclined anchor corresponding to the plug-in groove, and the device also comprises a grouting protection plate for separating slurry in the anchor borehole and slurry in the protective cover after grouting is completed, the grouting protection plate being formed by seamlessly splicing two plates extending from both ends of the plug-in groove into the limit groove, the two plates being connected to the protective cover by connecting pieces, a grouting hole and a pressure monitoring hole are also arranged on the protective cover, the grouting hole is connected to a grouting machine through a grouting pipe, and the pressure monitoring hole is connected to a pressure monitoring device through a monitoring pipe.

[0006] Furthermore, the protective cover is a cylindrical structure with one end open and the other end closed.

[0007] Furthermore, the shutter comprises an annular structure and an adjusting screw, wherein the adjusting screw is threadedly connected to the protective cover, a nut end is located outside the protective cover, and the other end is rotatably connected to the annular structure.

[0008] Furthermore, a sealing gasket is provided on the outer side of the annular structure.

[0009] Furthermore, sealing pads are provided on both sides of the grouting protection plate.

[0010] Furthermore, a sealing gasket is provided on the end surface of the opening end of the protective cover.

[0011] Furthermore, the fixing member includes two fixing rods, which are respectively located on two opposite sides of the protective cover and staggered with the plug-in slot, and the free ends of the fixing rods are connected to the structure through expansion screws.

[0012] Furthermore, the structure is a frame beam or a slope.

[0013] Furthermore, the connecting member is a fastening screw.

[0014] The beneficial effects of the utility model are:

[0015] The utility model discloses a device for inclined anchor grouting, which injects grout into the anchor hole and monitors the grouting pressure by setting a protective cover fixed on a structure, and a plug-in slot is set on the protective cover. During grouting, the plug-in slot is closed by an opener and a closeer, and after the grouting is completed, the plug-in slot is opened by the opener and a grouting protection plate is plugged into the plug-in slot, and the grouting protection plate separates the slurry in the anchor hole and the slurry in the protective cover, and the grouting pipe and the monitoring pipe are retracted, so that the slurry in the anchor hole will not flow back, and finally the grouting hole and the pressure monitoring hole are blocked, and the device avoids the situation that the slurry may automatically slip out of the anchor hole or even spray out.

[0016] The adjusting screw is rotated relative to the protective cover to realize the movement of the annular structure along the length direction of the protective cover, thereby realizing the opening and closing of the plug-in slot by the shutter.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a three-dimensional diagram of the utility model.

[0020] Figure 2 It is a right side sectional view of the utility model.

[0021] Figure 3 It is a bottom sectional view of the utility model.

[0022] Figure 4 for Figure 1 Cross-sectional view of the outer surface of the grouting protection plate.

[0023] In the figure: protection cover 1, anchor rod drilling hole 2, fixing rod 3, slope 4, expansion screw 5, annular structure 6, adjustment screw 7, inclined anchor rod 8, grouting protection plate 9, fastening screw 10, grouting hole 11, pressure monitoring hole 12. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0025] Embodiment 1

[0026] like Figure 1As shown, a device for inclined anchor grouting, the main body of which is a protective cover 1, the protective cover 1 is a cylindrical shape with one end open and the other end closed, the aperture of the protective cover 1 is slightly larger than the aperture of the anchor borehole 2, and a fixing rod 3 is respectively provided on the opposite side of the protective cover 1, the fixing rod 3 includes an inclined section and a horizontal section connected to each other, the inclined sections of the two fixing rods 3 are fixedly connected to the protective cover 1, and the horizontal section is provided with a threaded hole. A plug-in slot is vertically penetrated through the end of the open end of the protective cover 1, the plug-in slot is staggered and perpendicular to the fixing rod 3 to prevent the fixing rod 3 from blocking the plug-in slot, the width of the plug-in slot is equal to the inner diameter of the protective cover 1, the center line of the plug-in slot in the width direction is located in the radial direction of the protective cover 1, and two threaded holes are provided in the side wall of the protective cover 1, and the two threaded holes are respectively perpendicularly crossed with the two ends of the center line of the plug-in slot in the width direction. A rubber sealing ring is provided on the end face of the open end of the protective cover 1. The protective cover 1 covers the outside of the anchor rod drilling hole 2. The horizontal sections of the two fixing rods 3 are attached to the surface of the slope 4 or the frame beam outside the anchor rod drilling hole and fixed to the slope 4 or the frame beam through the threaded holes on the expansion screws 5. An opener and closeer is provided in the protective cover 1 for closing the plug slot during grouting and opening the plug slot after the grouting is completed. The opener and closeer includes an annular structure 6 and two adjusting screws 7. The annular structure 6 is a circular ring. The annular structure 6 is rotated away from the end of the anchor rod drilling hole 2 to connect the two adjusting screws 7. The threads of the two adjusting screws 7 are consistent. The two adjusting screws 7 are symmetrical with the axis of the annular structure 6. The closed end of the protective cover 1 is provided with two threaded holes respectively matched with the two adjusting screws 7. The two adjusting screws 7 are respectively threadedly connected with the two threaded holes of the closed end of the protective cover 1. The nut ends of the two adjusting screws 7 are located outside the closed end of the protective cover 1. The rotation of the two adjusting screws 7 drives the annular structure 6 to move and then open and close the plug slot. A rubber sealing pad is provided on the outer side of the annular structure 6. The closed end of the protective cover 1 is provided with an anchor rod mounting hole, a rubber sealing ring is provided in the anchor rod mounting hole, an inclined anchor rod 8 is installed in the anchor rod mounting hole, and an annular limit groove is provided corresponding to the plug-in groove of the inclined anchor rod 8. It also includes a grouting protection plate 9 for separating the grout in the anchor rod borehole 2 and the grout in the protective cover 1 after grouting is completed. The grouting protection plate 9 is formed by two plates extending from the two ends of the plug-in groove into the limit groove and seamlessly spliced. The opposite sides of the two plates are respectively provided with matching rubber sealing strips and sealing grooves. The two plates are respectively provided with threaded holes corresponding to the two threaded holes on the side wall of the protective cover 1. Two fastening screws 10 pass through the two threaded holes on the side wall of the protective cover 1 and are threadedly connected to the threaded holes on the two plates to achieve the fixing of the protective plate. The closed end of the protective cover 1 is also provided with a grouting hole 11 and a pressure monitoring hole 12. The grouting hole 12 is connected to the grouting machine through a grouting pipe, and the pressure monitoring hole is connected to the pressure monitoring equipment through a monitoring pipe. The pressure monitoring equipment is provided with an alarm. When the grouting pressure reaches the set value, the alarm sounds and the grouting machine stops grouting.

[0027] Of course, the protective cover 1 may also be in the shape of a square cylinder with one end open and the other end closed.

[0028] Before grouting, the device rotates the two adjusting screws 7 on the annular structure 6 to move the annular structure 6 toward the anchor borehole 2 to close the plug-in slot. When the grouting machine is grouting, the pressure monitoring device monitors the grouting pressure. When the set value is reached, the grouting machine stops grouting. After the grouting is completed, the two adjusting screws 7 on the annular structure 6 are rotated in the opposite direction to open the plug-in slot of the annular structure 6. The grouting protection plate 9 is inserted into the plug-in slot. The grouting protection plate 9 isolates the slurry in the anchor borehole 2 and the slurry in the protective cover 1, withdraws the grouting pipe and the monitoring pipe, and blocks the grouting hole 12 and the pressure monitoring hole 11. The protective cover 11 is fixed to the frame beam or slope 4 by the expansion screw 5, so that the protective cover 1 is fixed firmly during the grouting operation, and the grouting protection plate 9 is fixed firmly after the grouting is completed. The device avoids the situation where the slurry may automatically slip out of the anchor borehole 2 or even spray out.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A device for inclined anchor grouting, characterized in that: The invention comprises a protective cover (1) covering the outside of the anchor rod drilling hole, the open end of the protective cover (1) is vertically penetrated by a plug groove, the protective cover (1) is fixed to a structure outside the anchor rod drilling hole (2) through a fixing member, and the end face of the open end is closely attached to the structure, the protective cover (1) is provided with a shutter for closing the plug groove during grouting and opening the plug groove after the grouting is completed, the protective cover (1) is provided with an anchor rod mounting hole for mounting an inclined anchor rod (8), and the inclined anchor rod (8) is provided with an annular limiter corresponding to the plug groove. The invention also comprises a grouting protection plate (9) for separating the grout in the anchor rod borehole (2) and the grout in the protection cover (1) after grouting is completed. The grouting protection plate (9) is formed by two plates extending from both ends of the plug-in slot into the limit slot and being seamlessly spliced ​​together. The two plates are connected to the protection cover (1) through connecting pieces. The protection cover (1) is also provided with a grouting hole (12) and a pressure monitoring hole (11). The grouting hole (12) is connected to a grouting machine through a grouting pipe, and the pressure monitoring hole (11) is connected to a pressure monitoring device through a monitoring pipe.

2. The device for inclined anchor grouting according to claim 1, characterized in that: The protective cover (1) is a cylindrical structure with one end open and the other end closed.

3. The device for inclined anchor grouting according to claim 2, characterized in that: The shutter comprises an annular structure (6) and an adjusting screw (7); the adjusting screw (7) is threadedly connected to the protective cover (1), a nut end is located outside the protective cover (1), and the other end is rotatably connected to the annular structure (6).

4. The device for inclined anchor grouting according to claim 3 is characterized in that: A sealing gasket is provided on the outer side of the annular structure (6).

5. The device for inclined anchor grouting according to claim 1, characterized in that: Sealing pads are provided on both sides of the grouting protection plate (9).

6. The device for inclined anchor grouting according to claim 1, characterized in that: A sealing gasket is provided on the open end surface of the protective cover (1).

7. The device for inclined anchor grouting according to claim 1, characterized in that: The fixing member comprises two fixing rods (3), the two fixing rods (3) are respectively located on two opposite sides of the protective cover (1) and are offset from the insertion slots, and the free ends of the fixing rods (3) are connected to the structure via expansion screws (5).

8. The device for inclined anchor grouting according to claim 1, characterized in that: The structure is a frame beam or a slope (4).

9. The device for inclined anchor grouting according to claim 1, characterized in that: The connecting piece is a fastening screw (10).

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