Tunnel grouting supporting structure

Abstract

The utility model provides a tunnel grouting supporting structure which comprises a bedplate, a bottom frame is installed on the lower surface of the bedplate, a storage bin is installed on the upper surface of the bedplate, a reversing valve penetrating through the bedplate is installed at the bottom of the storage bin, a grouting nozzle used for being connected with a hose is installed at the discharging end of the reversing valve, a transverse plate is arranged over the grouting nozzle, and the transverse plate is connected with the storage bin. One end of the transverse plate is connected with the table plate through a connecting piece, a plurality of vertical holes are evenly formed in the upper surface of the transverse plate, screw rods are inserted into the vertical holes, the screw rods are in threaded connection with two limiting nuts located on the upper sides and the lower sides of the vertical holes, shaft holes are formed in the lower ends of the screw rods, and concentric-square-shaped rods are inserted into the shaft holes. The flexible pipe connecting device has the advantages that the situation that the end, close to the grouting nozzle, of the flexible pipe is excessively bent is prevented, and the requirement for the connecting strength of the flexible pipe and the grouting nozzle is lowered.

Description

Technical Field

[0001] This utility model relates to a tunnel grouting support structure, belonging to the field of tunnel construction technology. Background Technology

[0002] In tunnel construction, grouting support is a key technology that involves injecting grout into the strata surrounding the tunnel. Under pressure, the grout penetrates and diffuses, cementing loose soil and rock particles to form a high-strength, low-permeability rock mass. This process reinforces the strata, increases bearing capacity, reduces deformation, and prevents groundwater leakage. Existing grouting equipment typically has grouting nozzles at the bottom of the storage silo connected to hoses for delivering the grout. To meet the needs of long-distance grouting operations, the hoses often have a large length margin, allowing the grouting end to be extended to the target location without moving the main body of the equipment.

[0003] However, in practice, when construction workers pull the hose to adjust the grouting position, the connection area near the grouting nozzle often experiences excessive bending due to uneven stress. This excessive bending not only causes abrupt changes in the cross-sectional area of ​​the hose's internal flow channel, affecting grout delivery efficiency, but also subjects the connection between the hose and the grouting nozzle to periodic stress concentration, leading to fatigue damage of the hose material or failure of the connection structure. Current technology lacks a significant technological gap in the support and adjustment mechanism for the hose near the grouting nozzle area, lacking a guide support device that can be flexibly adjusted according to the construction scenario. This results in this critical connection area being under high-risk conditions for extended periods, posing a severe challenge to the stability of grouting operations and the reliability of equipment. Therefore, an improved solution that can effectively alleviate hose bending stress and improve the reliability of the connection structure is urgently needed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a tunnel grouting support structure to solve the problems mentioned in the background technology. This utility model prevents excessive bending of the end of the hose near the grouting nozzle and reduces the requirements for the connection strength between the hose and the grouting nozzle.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tunnel grouting support structure, comprising a platform, a base frame mounted on the lower surface of the platform, a storage bin mounted on the upper surface of the platform, a reversing valve penetrating the platform at the bottom of the storage bin, a grouting nozzle for connecting a hose mounted on the outlet end of the reversing valve, a driving component for allowing grouting material in the storage bin to enter the grouting nozzle mounted on the lower surface of the reversing valve, a horizontal plate positioned directly above the grouting nozzle, one end of the horizontal plate being connected to the platform via a connector, multiple vertical holes evenly distributed on the upper surface of the horizontal plate, a screw rod inserted into each vertical hole, two limiting nuts threaded onto the screw rod located on the upper and lower sides of the vertical hole, a shaft hole at the lower end of the screw rod, a loop rod inserted into the shaft hole, and a hook for mounting on a hose rotatably mounted at the middle of a horizontal section of the loop rod away from the screw rod.

[0006] Furthermore, the reversing valve includes a four-position three-way valve body, in which a valve core is slidably mounted. A vertically arranged communicating cavity is formed on the spherical surface of the valve core, and a discharge cavity for communicating with the grouting nozzle is formed on the spherical surface of the valve core. A connecting shaft is mounted on the spherical surface of the valve core, one end of which extends to the outside of the four-position three-way valve body. A servo motor is mounted on the lower surface of the platform, and the output shaft of the servo motor is connected and fixed to the end of the connecting shaft located outside the four-position three-way valve body. The four-position three-way valve body is connected to a driving component.

[0007] Furthermore, the driving component includes a straight cylinder, which is installed at the lower part of the outer surface of the four-position three-way valve body. A piston is slidably installed inside the straight cylinder, and a piston rod is installed on the lower surface of the piston. The lower end of the piston rod extends to the lower side of the straight cylinder. A crankshaft is rotatably connected to the lower end of the piston rod. A crank wheel is rotatably installed at the end of the crankshaft away from the piston rod. A power motor is installed at the lower part of the base frame, and the crankshaft is mounted on the output shaft of the power motor.

[0008] Furthermore, the lower end of the straight cylinder is provided with a support plate, and four columns are evenly installed on the lower surface of the support plate. The lower end of the columns is connected and fixed to a base plate. The base plate is equipped with a base through an adjusting component. The base is installed in the lower part of the base frame. The power motor is installed on the upper surface of the base plate. A strip-shaped opening is opened on the upper surface of the base plate, and the crank wheel is set in the strip-shaped opening.

[0009] Furthermore, the adjusting component includes studs, and through holes are provided at the four corners of the upper surface of the base plate. Studs are inserted into the through holes, and the lower end of the studs is connected and fixed to the base. Two adjusting nuts located on the upper and lower sides of the through holes are threaded onto the studs.

[0010] Furthermore, the connector includes a connecting plate, with a connecting plate installed at one end of the horizontal plate near the platform, and support plates fixedly connected to both ends of the connecting plate, the lower end of the support plate being fixedly connected to the platform.

[0011] Furthermore, the grouting nozzle is fitted with a connecting ear that is fixed to the grouting nozzle, and the end of the connecting ear away from the grouting nozzle is connected to the base frame by a screw.

[0012] The beneficial effects of this utility model are:

[0013] 1. The valve core is driven to rotate by a servo motor, rotating 90° each time. When the connecting cavity is between the straight cylinder and the storage hopper, the power motor drives the piston to move downward, allowing the grouting material in the storage hopper to enter the straight cylinder. After the connecting cavity rotates 90°, the power motor drives the piston to move upward, thereby squeezing the grouting material in the straight cylinder into the grouting nozzle. The above actions are repeated to achieve the purpose of grouting.

[0014] 2. Insert screws into multiple vertical holes, then adjust the relative position of the horizontal plate while adjusting the screws to arrange the hooks in an orderly staggered pattern. Then, use limit nuts to restrict the relative position of the screws and the horizontal plate, allowing the hose to pass through multiple hooks. The hooks, screws, horizontal plates, and other components then support and limit the hose near the grouting nozzle. As a result, the hose connected to the grouting nozzle will not be excessively bent during the pulling process. At the same time, during the pulling process, the hook will drive the loop rod to move along the shaft hole, and the hook will also rotate, thereby playing a role in unloading force, increasing the range of motion of the hose, and reducing the requirements for the connection strength between the hose and the grouting nozzle. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of a tunnel grouting support structure according to the present invention;

[0017] Figure 2 This is a schematic diagram of the assembly of the piston, piston rod and power motor in a tunnel grouting support structure according to the present invention.

[0018] Figure 3 This is a schematic diagram of the assembly of the connecting shaft and the valve core in a tunnel grouting support structure according to the present invention.

[0019] Figure 4 This is a schematic diagram of the assembly of the horizontal plate, grouting nozzle, storage bin and platform in a tunnel grouting support structure according to the present invention.

[0020] Figure 5This is a schematic diagram of the assembly of the screw, hook and cross plate in a tunnel grouting support structure according to the present invention.

[0021] In the diagram: 1-platform, 2-grouting nozzle, 3-four-position three-way valve body, 4-straight cylinder, 5-support plate, 6-power motor, 7-base frame, 8-column, 9-servo motor, 10-connecting shaft, 11-storage bin, 12-piston, 13-piston rod, 14-stud, 15-adjusting nut, 16-crank wheel, 17-base plate, 18-base, 19-crank shaft, 20-valve core, 21-connecting cavity, 22-discharge cavity, 23-support plate, 24-connecting plate, 25-horizontal plate, 26-vertical hole, 27-screw, 28-limit nut, 29-U-shaped rod, 30-hook. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1-3 This utility model provides a technical solution: a tunnel grouting support structure, including a platform 1, a base frame 7 installed on the lower surface of the platform 1, a storage bin 11 installed on the upper surface of the platform 1, a reversing valve penetrating the platform 1 installed at the bottom of the storage bin 11, a grouting nozzle 2 for connecting a hose installed at the outlet end of the reversing valve, the reversing valve including a four-position three-way valve body 3, a valve core 20 slidably installed inside the four-position three-way valve body 3, a vertically arranged communicating cavity 21 opened on the spherical surface of the valve core 20, the valve core... The valve core 20 has a discharge chamber 22 on its spherical surface for connecting the connecting cavity 21 and the grouting nozzle 2. A connecting shaft 10 is installed on the spherical surface of the valve core 20. One end of the connecting shaft 10 extends to the outside of the four-position three-way valve body 3. A servo motor 9 is installed on the lower surface of the platform 1. The output shaft of the servo motor 9 is connected and fixed to the end of the connecting shaft 10 located outside the four-position three-way valve body 3. After the servo motor 9 controls the valve core 20 to rotate, it connects the straight cylinder 4 to the storage bin 11 or disconnects the straight cylinder 4 from the storage bin 11.

[0024] See Figures 1-3A straight cylinder 4 is installed on the lower part of the outer surface of the four-position three-way valve body 3. A piston 12 is slidably installed inside the straight cylinder 4. A piston rod 13 is installed on the lower surface of the piston 12. The lower end of the piston rod 13 extends to the lower side of the straight cylinder 4. A crank shaft 19 is rotatably connected to the lower end of the piston rod 13. A crank wheel 16 is rotatably installed at the end of the crank shaft 19 away from the piston rod 13. A power motor 6 is installed on a base 18 installed in the lower part of the base frame 7. The crank shaft 19 is installed on the output shaft of the power motor 6. The servo motor 9 drives the valve core 20 to rotate, so that the valve core 20 rotates 90° each time. When the connecting cavity 21 is between the straight cylinder 4 and the storage bin 11, the power motor 6 drives the piston 12 to move downward, so that the grouting material in the storage bin 11 enters the straight cylinder 4. After the connecting cavity 21 rotates 90°, the power motor 6 drives the piston 12 to move upward, so that the piston 12 squeezes the grouting material in the straight cylinder 4 into the grouting nozzle 2. The above actions are repeated to achieve the purpose of grouting.

[0025] See Figure 1 and Figure 2 The lower end of the straight cylinder 4 is provided with a support plate 5. Four columns 8 are evenly installed on the lower surface of the support plate 5. The lower end of the column 8 is connected and fixed to a base plate 17. The upper surface of the base plate 17 has through holes at the four corners. Studs 14 are inserted into the through holes. The lower end of the studs 14 is connected and fixed to the base 18. Two adjusting nuts 15 located on the upper and lower sides of the through holes are threaded onto the studs 14. The power motor 6 is installed on the upper surface of the base 18. The upper surface of the base plate 17 has a strip-shaped opening. The crank wheel 16 is set in the strip-shaped opening. With the cooperation of the studs 14 and the adjusting nuts 15, there is a gap between the base 18 and the base plate 17, providing space for the rotation of the crank wheel 16.

[0026] See Figure 1 , Figure 4 and Figure 5The grouting nozzle 2 is fitted with a connecting ear for connection and fixation. The end of the connecting ear away from the grouting nozzle 2 is connected to the base frame 7 by screws, which improves the stability of the grouting nozzle 2 structure. A horizontal plate 25 is provided directly above the grouting nozzle 2. A connecting plate 24 is installed at the end of the horizontal plate 25 near the platform 1. Support plates 23 are fixedly connected to both ends of the connecting plate 24. The lower end of the support plate 23 is fixedly connected to the platform 1. The design of the support plate 23 and the connecting plate 24 facilitates the existence of a height difference between the horizontal plate 25 and the platform 1. Multiple vertical holes 26 are evenly opened on the upper surface of the horizontal plate 25. A screw 27 is inserted into the vertical holes 26. Two limiting nuts 28 located on the upper and lower sides of the vertical holes 26 are threaded onto the screw 27. A shaft hole is opened at the lower end of the screw 27. A loop rod 29 is inserted into the shaft hole. The loop rod 29 is located in the middle of a horizontal part away from the screw 27. A hook 30 is mounted on the flexible hose and rotates to fit over it. Screws 27 are inserted into multiple vertical holes 26. The relative position of the horizontal plate 25 is adjusted by changing the screws 27, resulting in an orderly, staggered arrangement of the hooks 30. A limiting nut 28 restricts the relative position of the screws 27 and the horizontal plate 25, allowing the hose to pass through the hooks 30. The hooks 30, screws 27, and horizontal plate 25 provide support and limit the hose near the grouting nozzle 2. This prevents excessive bending of the hose connected to the grouting nozzle 2 during pulling. Simultaneously, the hooks 30 drive the loop rod 29 to move along the shaft hole, and the hooks 30 also rotate, thus relieving stress, increasing the hose's range of motion, and reducing the strength requirements for the connection between the hose and the grouting nozzle 2.

[0027] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tunnel grouting support structure, comprising a platform (1), characterized in that: A base frame (7) is installed on the lower surface of the platform (1), and a storage bin (11) is installed on the upper surface of the platform (1). A reversing valve penetrating the platform (1) is installed at the bottom of the storage bin (11). A grouting nozzle (2) for connecting a hose is installed at the discharge end of the reversing valve. A driving component for allowing the grouting material in the storage bin (11) to enter the grouting nozzle (2) is installed on the lower surface of the reversing valve. A horizontal plate (25) is provided directly above the grouting nozzle (2). One end of the horizontal plate (25) is connected to the platform via a connector. The plates (1) are connected. The upper surface of the horizontal plate (25) is evenly provided with multiple vertical holes (26). A screw (27) is inserted into the vertical hole (26). Two limiting nuts (28) located on the upper and lower sides of the vertical hole (26) are threaded onto the screw (27). A shaft hole is provided at the lower end of the screw (27). A loop rod (29) is inserted into the shaft hole. A hook (30) for sleeved on the hose is rotatably installed at the middle of a horizontal part of the loop rod (29) away from the screw (27).

2. The tunnel grouting support structure according to claim 1, characterized in that: The reversing valve includes a four-position three-way valve body (3), in which a valve core (20) is slidably installed. A vertically arranged communication cavity (21) is opened on the spherical surface of the valve core (20), and a discharge cavity (22) is opened on the spherical surface of the valve core (20) for communicating with the grouting nozzle (2). A connecting shaft (10) is installed on the spherical surface of the valve core (20), one end of which extends to the outside of the four-position three-way valve body (3). A servo motor (9) is installed on the lower surface of the platform (1). The output shaft of the servo motor (9) is connected and fixed to the end of the connecting shaft (10) located outside the four-position three-way valve body (3). The four-position three-way valve body (3) is connected to the driving component.

3. The tunnel grouting support structure according to claim 2, characterized in that: The driving component includes a straight cylinder (4). The straight cylinder (4) is installed on the lower part of the outer surface of the four-position three-way valve body (3). A piston (12) is slidably installed inside the straight cylinder (4). A piston rod (13) is installed on the lower surface of the piston (12). The lower end of the piston rod (13) extends to the lower side of the straight cylinder (4). A crankshaft (19) is rotatably connected to the lower end of the piston rod (13). A crank wheel (16) is rotatably installed at the end of the crankshaft (19) away from the piston rod (13). A power motor (6) is installed in the lower part of the base frame (7). The crankshaft (19) is installed on the output shaft of the power motor (6).

4. A tunnel grouting support structure according to claim 3, characterized in that: The lower end of the straight cylinder (4) is provided with a support plate (5). Four columns (8) are evenly installed on the lower surface of the support plate (5). The lower end of the column (8) is connected and fixed with a base plate (17). The base plate (17) is equipped with a base (18) through an adjusting component. The base (18) is installed in the lower part of the base frame (7). The power motor (6) is installed on the upper surface of the base (18). The upper surface of the base plate (17) is provided with a strip-shaped opening. The crank wheel (16) is set in the strip-shaped opening.

5. A tunnel grouting support structure according to claim 4, characterized in that: The adjusting component includes a stud (14). The base plate (17) has through holes at the four corners on its upper surface. The stud (14) is inserted into the through holes. The lower end of the stud (14) is connected and fixed to the base (18). Two adjusting nuts (15) are threaded onto the stud (14) and located on the upper and lower sides of the through holes.

6. A tunnel grouting support structure according to claim 5, characterized in that: The connector includes a connecting plate (24). The connecting plate (24) is installed at one end of the horizontal plate (25) near the platform (1). Both ends of the connecting plate (24) are connected and fixed with support plates (23). The lower end of the support plate (23) is connected and fixed to the platform (1).

7. A tunnel grouting support structure according to claim 6, characterized in that: The grouting nozzle (2) is fitted with a connecting ear that is fixed to the grouting nozzle (2). The end of the connecting ear away from the grouting nozzle (2) is connected to the base frame (7) by screws.

Images