A device for filling the joints of a slope lining mortar and a method of use

Abstract

A kind of revetment lining mortar pointing device and method, the pointing device includes pointing groove nozzle, mortar injection pipe, positioning support, mortar guide pipe, connecting joint, flow control valve, mortar pump pipe;Positioning support of frame structure is set on mortar injection pipe;The lower end of mortar injection pipe is connected with pointing groove nozzle, and the upper end is connected with mortar guide pipe;Mortar guide pipe is connected with mortar pump pipe by connecting joint, and flow control valve is arranged between connecting joint and mortar guide pipe.When using, positioning support is positioned on lining, artificial both hands hold down press operating handle, pointing groove nozzle is pressed down until it is closely attached to the two edges of mortar pointing groove, then flow control valve is opened, and mortar is injected into mortar pointing groove.The positioning support of the pointing device can make pointing groove nozzle closely attached to lining, can improve the uniformity and compactness of mortar introduced into mortar pointing groove, and can realize synchronous mortar introduction and troweling.

Description

Technical Field

[0001] This invention belongs to the field of water conservancy engineering construction and municipal construction technology, and particularly relates to the field of mortar jointing construction technology applicable to permanent slope protection and temporary slope protection lining, specifically relating to a mortar jointing device for slope protection lining and its usage method. Background Technology

[0002] In practical engineering construction, precast concrete hexagonal blocks are commonly used to assemble slope protection linings to protect slopes from water flow, soil erosion, and other environmental factors, maintaining slope stability. The gaps between multiple precast concrete hexagonal blocks need to be filled with mortar to ensure the lining's stability, prevent wind and rainwater from intruding into the lining, and maintain a clean, neat, and aesthetically pleasing appearance. Currently, the common practice for mortar filling is to manually apply mortar to the gaps between the precast concrete hexagonal blocks and then smooth it. For large-area slope protection lining construction, this method is inefficient, costly in terms of labor, and results in inconsistent quality control. Furthermore, slope protection linings often involve water flow and need to be completed quickly within a short construction period. Therefore, improving the efficiency of mortar filling for slope protection linings is particularly important. Summary of the Invention

[0003] This invention addresses the problems and shortcomings of existing grouting methods in the background art by providing a mortar grouting device and its usage method for slope protection lining. It can be applied to slopes with different inclinations to solve the problems of low efficiency and inconsistent quality control in manual construction during mortar grouting, thus effectively improving construction quality and efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides a mortar grouting device for slope protection lining. The device includes a grouting groove spray pipe, a mortar injection pipe, a spring traction seat, a spring, a positioning bracket, a mortar flow control component, and a mortar pump pipe. The mortar injection pipe includes a main pipe and branch pipes. The mortar flow control component includes a steel pipe joint, a mortar inlet pipe, a connecting joint, and a flow control valve. The positioning bracket is located at the inlet end of the mortar injection pipe and the grouting groove spray pipe. The positioning bracket is a multi-faceted prism frame structure with parallel upper and lower surfaces, welded together from a fixed sleeve, connecting plate, support seat, and positioning plate. Multiple connecting plates and multiple positioning plates form an equilateral polygon structure. The fixed sleeve is fitted onto the upper main pipe of the mortar injection pipe. Multiple connecting plates are fixedly connected to the fixed sleeve to form a divergent structure. The connecting plates and their corresponding positioning plates are arranged parallel to each other. The support seat is vertically arranged, with its upper end fixedly connected to the connecting plate and its lower end fixedly connected to the positioning plate. Spring traction seats are symmetrically arranged on both sides of the lower part of the main pipe of the mortar injection pipe. The spring traction seats are connected to the corresponding connecting plates via springs. Spring connection; the grouting nozzle is located on the bottom inner side of the positioning bracket, and multiple grouting nozzles are welded together to form an equilateral polygon structure. A round hole is opened on the grouting nozzle as a discharge port; the lower end of the mortar injection pipe is connected to the inlet end of the grouting nozzle, and the lower part of the main pipe of the mortar injection pipe is connected to multiple branch pipes, forming a downwardly diverging structure. The bottom of each branch pipe is connected to the middle part of its corresponding grouting nozzle; the inlet end of the main pipe of the mortar injection pipe is connected to the steel pipe joint at the bottom of the mortar flow control component. The upper part is equipped with a mortar inlet pipe. The main pipe of the mortar injection pipe passes through the fixed sleeve and is connected to the mortar inlet pipe through a steel pipe joint. Operating handles are symmetrically arranged on both sides of the top of the mortar inlet pipe. The feed end of the mortar inlet pipe is connected to the mortar pump pipe through a connecting joint. The flow control valve is installed at the discharge end of the mortar pump pipe, between the discharge end of the connecting joint and the feed end of the mortar inlet pipe. The flow control valve is controlled by a controller. The mortar pump pipe, mortar inlet pipe, mortar injection pipe and grouting spray pipe are connected.

[0006] The positioning bracket is a hexagonal prism frame structure, with twelve connecting plates, six positioning plates, and six support bases. The six connecting plates and six positioning plates form an equilateral hexagonal structure. The other six connecting plates are fixedly connected to the fixing sleeve to form a divergent structure, and the six support bases are vertically arranged. The grouting groove spray pipe is made of six round pipes spliced ​​together. Each round pipe has two symmetrical round holes. The six grouting groove spray pipes form an equilateral hexagonal structure, which matches the outline shape of the positioning bracket and can be adjusted according to the shape of the precast lining block. The main pipe of the mortar injection pipe is connected to six branch pipes at the bottom.

[0007] The inner diameter of the fixed sleeve is 3.6cm, the thickness of the connecting plate is 1cm, the diameter of the support base is 1cm, and the thickness of the positioning plate is 1cm.

[0008] The discharge end of the grouting nozzle is equipped with a distance sensor, which is connected to the input end of the controller.

[0009] The branch pipe of the mortar injection pipe is connected to the grouting groove spray pipe by hot welding; the inner diameter of the discharge end of the branch pipe of the grouting groove spray pipe and the mortar injection pipe is 3.5cm, the inner diameter of the discharge port of the grouting groove spray pipe is 1.5cm, and the corresponding groove width of the mortar grouting groove is 2cm to 3cm.

[0010] One end of the spring passes through the spring traction seat at the bottom of the main pipe of the mortar injection pipe, and the other end is fixed to the corresponding connecting plate.

[0011] The connecting joint is fixedly connected to the mortar pump pipe by a snap fastener.

[0012] The inner diameter of the feed end of the mortar inlet pipe is 3.5cm, the inner diameter of the feed end of the connecting joint is 2.5cm, the outer diameter is 2.7cm, and the inner diameter of the discharge port of the mortar pump pipe is 2.7cm.

[0013] The operating handle at the top of the mortar inlet pipe has a diameter of 3cm, the inner diameter of the steel pipe joint is 3.5cm, and the diameter of the spring traction seat in the middle of the mortar injection pipe is 1cm.

[0014] This invention provides a method for using a mortar grouting device for slope protection lining. The method includes the following steps: connecting a mortar inlet pipe and a mortar pump pipe using a connecting joint; passing the main pipe at the top of the mortar injection pipe through a fixed sleeve on a positioning bracket and connecting it to the mortar inlet pipe via a steel pipe joint; then installing a spring, which is connected to a connecting plate on a spring traction seat and a positioning bracket; positioning the positioning bracket on the lining and aligning the positioning plate on the positioning bracket with the outer edge of the grouting groove; manually pressing down the operating handle with both hands to press the grouting groove spray pipe down until it is tightly against the two edges of the mortar grouting groove, and then opening the flow control valve to inject mortar into the mortar grouting groove; during the mortar injection process, a distance sensor detects in real time and transmits the detection data to a controller, which controls and adjusts the opening of the flow control valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The slope protection lining mortar grouting device of the present invention sets a positioning bracket at the feeding end of the grouting groove spray pipe and the mortar injection pipe. In actual use, the slope protection lining mortar grouting device is set on the lining. The positioning is quick and accurate, which is convenient for operators and ensures the accurate injection of grouting mortar.

[0017] 2. This invention achieves the smoothing purpose by manually pressing the operating handle downwards continuously. In actual use, the grouting nozzle and the two edges of the grouting groove come into contact to form a space. As the grouting nozzle injects mortar into the grouting groove, the mortar level gradually rises until it fills the entire space and then stops. The mortar adheres tightly to the surface of the grouting nozzle, achieving the smoothing purpose. It can also improve the uniformity and density of the mortar injected into the grouting groove, improve the grouting quality, and achieve grouting and smoothing simultaneously.

[0018] 3. This invention uses the linkage operation of a distance sensor and a flow control valve. In actual use, the mortar level gradually rises until it fills the entire space. During this process, the distance sensor continuously monitors the mortar level and controls the opening of the flow control valve to close it based on the monitored height signal. This achieves the purpose of controlling and regulating the flow rate of mortar introduced into the mortar grouting groove, supplying mortar according to the filling situation, making fuller use of materials and avoiding waste.

[0019] 4. The mortar grouting device for slope protection lining of the present invention has a connecting plate that is fixedly connected to the fixed sleeve by a spring traction seat in the middle of the mortar injection pipe. In actual use, after the mortar is injected, the grouting groove spray pipe can be quickly and labor-savingly lifted by the spring, which is convenient to operate and improves construction efficiency.

[0020] 5. The grouting nozzle of the slope protection lining mortar grouting device of the present invention is made by splicing round pipes and opening holes. It can be universally applied to mortar grouting grooves with a width not greater than the diameter of the round pipe, ensuring that the grouting nozzle can maintain contact with the two edges of mortar grouting grooves of different widths, without the need for adjustment according to the changes of mortar grouting grooves.

[0021] 6. The outline shape of the grouting groove spray pipe and positioning bracket of the slope protection lining mortar grouting device of the present invention can be adjusted according to the shape of the precast lining block, and it has a wide range of applications.

[0022] 7. The method of using this invention is simple and helps to improve the construction accuracy, efficiency and quality of mortar grouting, making it easy to promote and apply.

[0023] In summary, the positioning bracket of the present invention enables the grouting nozzle to fit tightly with the lining, improves the uniformity and compactness of mortar introduced into the grouting groove, and allows the continuous downward pressing of the operating handle to achieve the simultaneous introduction and smoothing of mortar. The mortar flow control component makes fuller use of materials and avoids waste. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a front view of the present invention;

[0026] Figure 3 This is a side view of the present invention;

[0027] Figure 4 This is a top view of the present invention;

[0028] Figure 5 This is a schematic diagram of the overall structure of the grouting nozzle and mortar injection pipe of the present invention.

[0029] Figure 6 This is a schematic diagram of the overall structure of the positioning bracket of the present invention;

[0030] Figure 7 This is a schematic diagram of the overall structure of the mortar flow control component of the present invention.

[0031] Figure reference numerals:

[0032] 1—Grouting nozzle; 2—Mortar injection pipe; 3—Spring traction seat; 4—Spring; 5—Positioning bracket; 6—Steel pipe joint; 7—Mortar inlet pipe; 8—Operating handle; 9—Connecting joint; 10—Flow control valve; 11—Mortar pump pipe; 12—Snap fastener; 13—Distance sensor.

[0033] 2-1—Supervisor; 2-2—Branch supervisor.

[0034] 5-1—Fixed sleeve; 5-2—Connecting plate; 5-3—Support base; 5-4—Positioning plate. Detailed Implementation

[0035] The present invention will be further described below with reference to specific embodiments. These specific embodiments are further explanations of the principles of the present invention and are not intended to limit the present invention in any way. Any technology that is the same as or similar to the present invention does not exceed the scope of protection of the present invention.

[0036] See Figures 1-7 The present invention provides a mortar grouting device for slope protection lining. The grouting device includes a grouting groove spray pipe 1, a mortar injection pipe 2, a spring traction seat 3, a spring 4, a positioning bracket 5, a mortar flow control component, and a mortar pump pipe 11. The mortar injection pipe 2 includes a main pipe 2-1 and a branch pipe 2-2. The mortar flow control component includes a steel pipe joint 6, a mortar inlet pipe 7, a connecting joint 9, and a flow control valve 10.

[0037] The positioning bracket 5 is installed at the inlet end of the mortar injection pipe 2 and the jointing nozzle 1 to support and position the jointing nozzle 1 and the mortar injection pipe 2. The positioning bracket 5 is a multi-faceted prism frame structure with parallel upper and lower surfaces, welded together from a fixed sleeve 5-1, a connecting plate 5-2, a support base 5-3, and a positioning plate 5-4. Multiple connecting plates 5-2 and multiple positioning plates 5-4 form an equilateral polygon structure. The fixed sleeve 5-1 is fitted onto the upper main pipe 2-1 of the mortar injection pipe 2. Multiple connecting plates 5-2 are fixedly connected to the fixed sleeve 5-1 to form a divergent structure. The connecting plates 5-2 and their corresponding positioning plates 5-4 are arranged in parallel. The support base 5-3 is arranged vertically, with its upper end fixedly connected to the connecting plate 5-2 and its lower end fixedly connected to the positioning plate 5-4. The jointing nozzle 1 is located on the bottom inner side of the positioning bracket 5. Multiple jointing nozzles 1 are welded together to form an equilateral polygon structure, and a round hole is opened on the jointing nozzle 1 as a discharge port. The lower end of the mortar injection pipe 2 is connected to the feed end of the grouting spray pipe 1. The lower part of the main pipe 2-1 of the mortar injection pipe 2 is connected to multiple branch pipes 2-2, forming a downwardly diverging structure. The bottom of each branch pipe 2-2 is connected to the middle of the corresponding grouting spray pipe 1. Spring traction seats 3 are symmetrically arranged on both sides of the lower part of the main pipe 2-1 of the mortar injection pipe 2. The spring traction seats 3 are connected to the corresponding connecting plates 5-2 by springs 4. One end of the spring 4 passes through the spring traction seat 3 at the lower part of the main pipe 2-1 of the mortar injection pipe 2, and the other end is fixed to the corresponding connecting plate 5-2. In this embodiment, the positioning bracket 5 is a hexagonal prism frame structure. Twelve connecting plates 5-2, six positioning plates 5-4, and six support seats 5-3 are provided. The six connecting plates 5-2 and six positioning plates 5-4 form an equilateral hexagonal structure. The other six connecting plates 5-2 are fixedly connected to the fixing sleeve 5-1 to form a divergent structure. The six support seats 5-3 are vertically arranged. The grouting nozzle 1 is composed of six round pipes spliced ​​together. Each round pipe has two symmetrically opened round holes. The six grouting nozzles 1 form an equilateral hexagonal structure, matching the outline of the positioning bracket 5, and can be adjusted according to the shape of the precast lining block. The main pipe 2-1 of the mortar injection pipe 2 is connected to six branch pipes 2-2 at its lower part. The branch pipes 2-2 of the mortar injection pipe 2 are connected to the grouting nozzle 1 by hot welding.

[0038] The mortar injection pipe 2 has its inlet end connected to a mortar flow control component. The main pipe 2-1 of the mortar injection pipe 2 has its inlet end connected to a steel pipe connector 6 at the bottom of the mortar flow control component. A mortar inlet pipe 7 is installed on the upper part of the steel pipe connector 6. The main pipe 2-1 of the mortar injection pipe 2 passes through a fixed sleeve 5-1 and connects to the mortar inlet pipe 7 via the steel pipe connector 6, allowing for easy assembly and disassembly and quick connection. Operating handles 8 are symmetrically arranged on both sides of the top of the mortar inlet pipe 7. A connecting connector 9 and a flow control valve 10 are installed on the upper part of the mortar inlet pipe 7. The flow control valve 10 is installed at the outlet end of the mortar pump pipe 11, positioned between the outlet end of the connecting connector 9 and the inlet end of the mortar inlet pipe 7. The inlet end of the mortar inlet pipe 7 is connected to the mortar pump pipe 11 via the connecting connector 9. The connecting connector 9 is equipped with a clip 12 for connecting to the mortar pump pipe 11. In actual use, the clip 12 enables quick connection between the connecting connector 9 and the mortar pump pipe 11, facilitating easy assembly and disassembly and ensuring good sealing. The mortar pump pipe 11, mortar inlet pipe 7, mortar injection pipe 2, and grouting channel spray pipe 1 are connected. A distance sensor 13 is installed at the discharge end of the grouting channel spray pipe 1. The flow control valve 10 is controlled by a controller, and the distance sensor 13 is connected to the input end of the controller. By using the flow control valve 10 to control and adjust the flow rate of the mortar introduced into the grouting channel, it helps to improve the uniformity, aesthetics, and grouting quality of the mortar joints.

[0039] All pipes and plates are made of hot-rolled steel. Except for special parts where joints are used for connection, all other parts are hot-welded. Other components use commercially available accessories. The inner diameter of the fixed sleeve 5-1 is 3.6cm, the thickness of the connecting plate 5-2 is 1cm, the diameter of the support 5-3 is 1cm, and the thickness of the positioning plate 5-4 is 1cm. The inner diameter of the discharge end of the branch pipe 2-2 of the grouting groove spray pipe 1 and the mortar injection pipe 2 is 3.5cm, the inner diameter of the discharge port of the grouting groove spray pipe 1 is 1.5cm, and the width of the corresponding mortar grouting groove is 2cm to 3cm. The inner diameter of the inlet end of the mortar inlet pipe 7 is 3.5cm, the inner diameter of the inlet end of the connecting joint 9 is 2.5cm, the outer diameter is 2.7cm, and the inner diameter of the discharge port of the mortar pump pipe 11 is 2.7cm. The operating handle 8 at the top of the mortar inlet pipe 7 has a diameter of 3cm, the inner diameter of the steel pipe joint 6 is 3.5cm, and the diameter of the spring traction seat 3 in the middle of the mortar injection pipe 2 is 1cm.

[0040] The method of using this device includes the following steps:

[0041] 1. Use connector 9 to connect mortar inlet pipe 7 at the feed end of mortar injection pipe 2 to mortar pump pipe 11, and use buckle 12 to fix mortar pump pipe 11 and connector 9.

[0042] 2. After passing the main pipe 2-1 at the top of the mortar injection pipe 2 through the fixed sleeve 5-1 on the positioning bracket 5, connect it to the mortar inlet pipe 7 at the bottom of the mortar flow control component through the steel pipe joint 6. Then, pass one end of the spring 4 through the spring traction seat 3 at the bottom of the main pipe 2-1 of the mortar injection pipe 2. One end of the spring 4 is connected to the spring traction seat 3, and the other end is fixed to the connecting plate 5-2 on the positioning bracket 5.

[0043] 3. Position the positioning bracket 5 on the lining, align the positioning plate 5-4 on the positioning bracket 5 with the outer edge of the grouting groove to complete the positioning.

[0044] 4. Manually hold and press down the operating handle 8 with both hands to press down the grouting nozzle 1 until it is close to the two edges of the mortar grouting groove. Then, open the flow control valve 10 installed at the discharge end of the mortar pump pipe 11 so that the mortar enters the mortar inlet pipe 7 and the mortar injection pipe 2 through the mortar pump pipe 11. Then, the mortar enters the grouting nozzle 1 through the mortar injection pipe 2 and is injected into the mortar grouting groove through the grouting nozzle 1. At the same time, the manual continues to hold and press down the operating handle 8 until the flow control valve 10 stops automatically and then releases it.

[0045] During the process of injecting mortar into the mortar grouting groove through the grouting groove nozzle 1, the distance sensor 13 can detect the liquid level of the mortar layer introduced into the mortar grouting groove in real time and transmit the detection data to the controller. The controller then controls and adjusts the opening of the flow control valve 10 to achieve the purpose of controlling and adjusting the flow rate of the mortar introduced into the mortar grouting groove.

Claims

1. A mortar grouting device for slope protection lining, characterized in that: The grouting device includes a grouting groove spray pipe (1), a mortar injection pipe (2), a spring traction seat (3), a spring (4), a positioning bracket (5), a mortar flow control component, and a mortar pump pipe (11). The mortar injection pipe (2) includes a main pipe (2-1) and a branch pipe (2-2). The mortar flow control component includes a steel pipe joint (6), a mortar inlet pipe (7), a connecting joint (9), and a flow control valve (10). The positioning bracket (5) is set at the feed end of the mortar injection pipe (2) and the grouting groove spray pipe (1). The positioning bracket (5) is a multi-faceted prism frame structure with parallel upper and lower surfaces, welded together from a fixed sleeve (5-1), a connecting plate (5-2), a support seat (5-3), and a positioning plate (5-4). The structure consists of multiple connecting plates (5-2) and multiple positioning plates (5-4) forming an equilateral polygon. A fixing sleeve (5-1) is fitted onto the upper main pipe (2-1) of the mortar injection pipe (2). Multiple connecting plates (5-2) are fixedly connected to the fixing sleeve (5-1) to form a divergent structure. The connecting plates (5-2) and their corresponding positioning plates (5-4) are arranged in parallel. The support base (5-3) is arranged vertically, with its upper end fixedly connected to the upper part of the connecting plate (5-2) and its lower end fixedly connected to the positioning plate (5-4). Spring traction seats (3) are symmetrically arranged on both sides of the lower part of the main pipe (2-1) of the mortar injection pipe (2). The spring traction seats (3) are connected to the corresponding connecting plates. (5-2) Connected by spring (4); the grouting nozzle (1) is set on the bottom inner side of the positioning bracket (5), and multiple grouting nozzles (1) are welded together to form an equilateral polygon structure. A round hole is opened on the grouting nozzle (1) as a discharge port; the lower end of the mortar injection pipe (2) is connected to the feed end of the grouting nozzle (1), and the lower part of the main pipe (2-1) of the mortar injection pipe (2) is connected to multiple branch pipes (2-2) to form a downwardly diverging structure. The bottom of each branch pipe (2-2) is connected to the middle part of the corresponding grouting nozzle (1); the feed end of the main pipe (2-1) of the mortar injection pipe (2) is connected to the steel pipe joint (6) at the bottom of the mortar flow control component, and the upper part of the steel pipe joint (6) is connected to the steel pipe joint (6). A mortar inlet pipe (7) is provided. The main pipe (2-1) of the mortar injection pipe (2) passes through the fixed sleeve (5-1) and is connected to the mortar inlet pipe (7) through the steel pipe joint (6). Operating handles (8) are symmetrically arranged on both sides of the top of the mortar inlet pipe (7). The feed end of the mortar inlet pipe (7) is connected to the mortar pump pipe (11) through the connecting joint (9). The flow control valve (10) is installed at the discharge end of the mortar pump pipe (11) and is located between the discharge end of the connecting joint (9) and the feed end of the mortar inlet pipe (7). The flow control valve (10) is controlled by the controller. The mortar pump pipe (11), the mortar inlet pipe (7), the mortar injection pipe (2), and the grouting groove spray pipe (1) are connected.

2. The mortar jointing device for slope protection lining according to claim 1, characterized in that: The positioning bracket (5) is a hexagonal prism frame structure. There are twelve connecting plates (5-2), six positioning plates (5-4), and six support seats (5-3). The six connecting plates (5-2) and the six positioning plates (5-4) form an equilateral hexagonal structure. The other six connecting plates (5-2) are fixedly connected to the fixed sleeve (5-1) to form a divergent structure. The six support seats (5-3) are set vertically. The grouting groove spray pipe (1) is made of six round pipes spliced ​​together. Each round pipe has two round holes symmetrically opened. The six grouting groove spray pipes (1) form an equilateral hexagonal structure, which matches the outline shape of the positioning bracket (5) and can be adjusted according to the shape of the precast lining block. The main pipe (2-1) of the mortar injection pipe (2) is connected to six branch pipes (2-2) at the bottom.

3. The mortar pointing device for slope protection lining according to claim 1, characterized in that: The inner diameter of the fixed sleeve (5-1) is 3.6cm, the thickness of the connecting plate (5-2) is 1cm, the diameter of the support base (5-3) is 1cm, and the thickness of the positioning plate (5-4) is 1cm.

4. The mortar pointing device for slope protection lining according to claim 1, characterized in that: The discharge end of the grouting nozzle (1) is equipped with a distance sensor (13), which is connected to the input end of the controller.

5. The mortar grouting device for slope protection lining according to claim 1, characterized in that: The branch pipe (2-2) of the mortar injection pipe (2) is connected to the grouting groove spray pipe (1) by hot welding; the inner diameter of the discharge end of the grouting groove spray pipe (1) and the branch pipe (2-2) of the mortar injection pipe (2) is 3.5cm, the inner diameter of the discharge port of the grouting groove spray pipe (1) is 1.5cm, and the corresponding grouting groove width is 2cm to 3cm.

6. The mortar grouting device for slope protection lining according to claim 1, characterized in that: One end of the spring (4) passes through the spring traction seat (3) at the bottom of the main pipe (2-1) of the mortar injection pipe (2), and the other end is fixed on the corresponding connecting plate (5-2).

7. The mortar pointing device for slope protection lining according to claim 1, characterized in that: The connecting joint (9) is fixedly connected to the mortar pump pipe (11) by a buckle (12).

8. The mortar pointing device for slope protection lining according to claim 1, characterized in that: The inner diameter of the feed end of the mortar inlet pipe (7) is 3.5cm, the inner diameter of the feed end of the connector (9) is 2.5cm, the outer diameter is 2.7cm, and the inner diameter of the discharge port of the mortar pump pipe (11) is 2.7cm.

9. The mortar pointing device for slope protection lining according to claim 1, characterized in that: The operating handle (8) at the top of the mortar inlet pipe (7) has a diameter of 3cm, the inner diameter of the steel pipe joint (6) is 3.5cm, and the diameter of the spring traction seat (3) in the middle of the mortar injection pipe (2) is 1cm.

10. A method of using a mortar grouting device for slope protection lining, wherein the method employs the mortar grouting device for slope protection lining as described in claim 1, characterized in that: The method of using this device includes the following steps: 1) Use a connector (9) to connect the mortar inlet pipe (7) at the feed end of the mortar injection pipe (2) to the mortar pump pipe (11), and use a buckle (12) to fix the mortar pump pipe (11) and the connector (9); 2) Pass the main pipe (2-1) at the top of the mortar injection pipe (2) through the fixed sleeve (5-1) on the positioning bracket (5) and connect it to the mortar inlet pipe (7) at the bottom of the mortar flow control component through the steel pipe joint (6). Then, pass one end of the spring (4) through the spring traction seat (3) at the bottom of the main pipe (2-1) of the mortar injection pipe (2). One end of the spring (4) is connected to the spring traction seat (3), and the other end is fixed on the connecting plate (5-2) on the positioning bracket (5). 3) Position the lining with a positioning bracket (5), align the positioning plate (5-4) on the positioning bracket (5) with the outer edge of the grouting groove to complete the positioning; 4) Manually hold and press down the operating handle (8) with both hands to press down the grouting groove spray pipe (1) until it is close to the two edges of the mortar grouting groove. Then open the flow control valve (10) installed at the discharge end of the mortar pump pipe (11) so that the mortar is injected into the mortar grouting groove through the mortar pump pipe (11), mortar inlet pipe (7), mortar injection pipe (2), and grouting groove spray pipe (1). At the same time, the manual continues to hold and press down the operating handle (8) until the flow control valve (10) stops automatically and then releases it. During the process of injecting mortar into the mortar grouting groove through the grouting groove spray pipe (1), the distance sensor (13) detects the liquid level of the mortar layer introduced into the mortar grouting groove in real time and transmits the detection data to the controller. The controller controls and adjusts the opening of the flow control valve (10).

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