Underground tunnel reinforcing device
By designing an inclined mixing box and guide plate in the tunnel reinforcement device, combined with a motor-driven spiral mixing plate, the problem of concrete solidification during movement inside the tunnel was solved, enabling smooth discharge and continuous mixing of concrete, thus improving the practicality and service life of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINCHENG CONSTRUCTION (GUANGDONG) CO LTD
- Filing Date
- 2025-09-26
- Publication Date
- 2026-05-19
AI Technical Summary
When existing tunnel reinforcement devices move inside the tunnel, the mixing box cannot effectively mix the concrete, causing the concrete to solidify inside the mixing box, increasing its weight and making it difficult to discharge.
A reinforcement device for mined tunnels was designed, including an inclined mixing box, a spiral mixing plate, and a guide plate. The mixing box is driven by a motor to rotate, so as to achieve continuous mixing and smooth discharge of concrete. The guide plate is used to change the flow position, which facilitates grouting reinforcement.
It effectively prevents concrete from solidifying during transportation, ensures that concrete is smoothly discharged from the mixing tank, and improves the practicality and long service life of the device.
Smart Images
Figure CN224260351U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reinforcement device technology, and in particular to a reinforcement device for mined tunnels. Background Technology
[0002] When constructing tunnels and underground buildings, the corresponding space must first be excavated, and then the lining must be built in it. The choice of construction method should be based on geological, topographical and environmental conditions as well as the burial depth. Among these factors, the burial depth has a decisive influence on the construction method. For shallower projects, the foundation pit or trench is dug from the ground first, the lining is built, and then it is backfilled. This is the open-cut method. When the burial depth exceeds a certain limit, the open-cut method is no longer applicable, and the tunneling method must be used instead.
[0003] In the prior art, Chinese patent CN221322419U discloses a grouting reinforcement device for tunnel excavation. This device avoids the problem by continuously stirring the mud inside the water tank through a stirring mechanism. The reciprocating mechanism transfers the mud in the water tank to the water pipe, reducing the power source. The motor drives the grouting while stirring the mud in the water tank, reducing equipment costs. However, in practical applications, there is still a problem: when the grouting device for tunnel reinforcement moves inside the tunnel, the mixing box cannot mix the concrete. Since the tunnel is generally long, it takes time for workers to push the grouting device from the tunnel entrance to the grouting position. This may cause the concrete to solidify and adhere to the mixing box, increasing the weight of the mixing box and making it difficult to discharge the concrete from the mixing box. Therefore, we disclose a tunnel reinforcement device. Utility Model Content
[0004] In view of this, the purpose of this utility model is to propose a reinforcement device for underground tunnels to solve the problem of concrete being difficult to discharge from the mixing tank.
[0005] Based on the above objectives, this utility model provides a reinforcement device for mined tunnels, including a movable frame. Two fixed frames are fixedly connected to the top of the movable frame. A first fixed ring is fixedly connected to the upper end of each fixed frame, and a second fixed ring is rotatably connected inside the first fixed ring. A mixing box is disposed between the two fixed frames. Both ends of the mixing box are fixedly connected to the inner walls of the two second fixed rings, respectively. The mixing box is inclined relative to the horizontal plane. A motor is fixedly connected to the top of the movable frame, and the output end of the motor is fixedly sleeved with one end of the mixing box. A connecting cylinder is fixedly connected to one end of the mixing box extending through to one side of the second fixed ring. A feed hopper is fixedly connected to the upper end of the connecting cylinder, and a discharge hopper is fixedly connected to the lower end of the connecting cylinder. A guide plate is fixedly connected to the lower end of the discharge hopper, and the guide plate is inclined relative to the horizontal plane. A spiral stirring plate is fixedly connected to the inner wall of the mixing box.
[0006] Preferably, the end of the mixing box that is closer to the moving frame is fixedly connected to the output shaft of the motor, and the end of the mixing box that is farther from the moving frame is fixedly connected to the connecting cylinder.
[0007] Preferably, the feed hopper is a hollow cone shape, the discharge hopper is a hollow trapezoid shape, and the feed hopper is located on one side above the discharge hopper.
[0008] Preferably, one end of the guide plate is movably sleeved with a connecting pipe, one end of the connecting pipe is fixedly connected to an extension hose, one end of the extension hose is fixedly connected to a discharge pipe, one end of the guide plate is fixedly connected with two connecting rods, the upper end of the connecting rods is movably sleeved with a connecting sleeve, the upper end of the connecting sleeve slides through the connecting pipe to the outside of the connecting pipe, two springs are fixedly connected to the outer wall of the connecting pipe, one end of the two springs is fixedly connected to a connecting plate, and both ends of the connecting plate are fixedly connected to the connecting sleeve.
[0009] Preferably, the connecting plate and the two connecting sleeves form a U-shape, with the connecting sleeves located in the middle of the spring.
[0010] Preferably, the guide plate is an arc-shaped plate, the width of the guide plate is greater than the width of the discharge hopper, the discharge hopper is located above the guide plate, and a baffle is fixedly connected to the lower end of the discharge hopper, the baffle being located above the guide plate.
[0011] Preferably, the bottom end of the movable frame is fixedly connected to a self-locking caster wheel, one side of the top end of the movable frame is fixedly connected to a push frame, and the other side of the top end of the movable frame is fixedly connected to a limit plate, which is in contact with the discharge pipe.
[0012] The beneficial effects of this utility model are as follows: In use, the mobile frame fixes the position of the first fixing ring through the fixed frame, so that the first fixing ring restricts the rotation position of the mixing box through the second fixing ring. A motor is fixedly connected to the top of the mobile frame, and the output end of the motor is fixedly sleeved with one end of the mixing box, so that the mobile frame fixes the position of the motor, so that the motor can drive the mixing box to rotate after starting. The concrete in the mixing box can flow out to the guide plate through the connecting cylinder and the discharge hopper. The guide plate changes the flow position, which facilitates the use of concrete for grouting to reinforce the tunnel. When the workers move the concrete in the mixing box, the motor can be started to drive the mixing box and the spiral mixing plate to rotate in the opposite direction, so that the concrete can only be mixed and stirred in the mixing box and will not overflow. When the concrete needs to be discharged for grouting, the motor is started to rotate in the forward direction, so that the concrete is discharged from the mixing box. This allows the concrete to be continuously stirred during transportation, reduces the occurrence of concrete solidifying on the inner wall of the mixing box during transportation, makes the concrete discharge from the mixing box smooth, and also allows the mixing box to be used for a long time.
[0013] The concrete collected inside the guide plate enters the connecting pipe, and then flows out through the extension hose and the discharge pipe. This allows the operator to move the discharge pipe to the required location as needed, making it convenient to use and improving its practicality. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of an embodiment of the present utility model;
[0016] Figure 2 This is a partially cut-away three-dimensional structural diagram of the mixing box of this utility model;
[0017] Figure 3 This is a three-dimensional structural diagram of the connection structure of the connecting pipe, extension hose and discharge pipe of this utility model;
[0018] Figure 4 This is a partially cutaway three-dimensional structural diagram of the connecting cylinder and the discharge hopper of this utility model;
[0019] Figure 5 This is a partially cutaway three-dimensional structural diagram of the connecting pipe of this utility model.
[0020] The diagram is marked as follows:
[0021] 1. Movable frame; 2. Fixed frame; 3. First fixed ring; 4. Second fixed ring; 5. Mixing box; 6. Spiral mixing plate; 7. Motor; 8. Connecting cylinder; 9. Discharge hopper; 10. Guide plate; 11. Feed hopper; 12. Connecting pipe; 13. Extension hose; 14. Discharge pipe; 15. Baffle; 16. Connecting rod; 17. Connecting sleeve; 18. Connecting plate; 19. Spring; 20. Limiting plate. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.
[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0024] like Figures 1-5As shown, the tunnel reinforcement device includes a movable frame 1. Two fixed frames 2 are fixedly connected to the top of the movable frame 1. A first fixed ring 3 is fixedly connected to the upper end of each fixed frame 2. A second fixed ring 4 is rotatably connected inside the first fixed ring 3. A mixing box 5 is disposed between the two fixed frames 2. Both ends of the mixing box 5 are fixedly connected to the inner walls of the two second fixed rings 4, respectively. The mixing box 5 is inclined relative to the horizontal plane. A motor 7 is fixedly connected to the top of the movable frame 1. The output end of the motor 7 is fixedly sleeved with one end of the mixing box 5. A connecting cylinder 8 is fixedly connected to one end of the mixing box 5 extending through to one side of the second fixed ring 4. A feed hopper 11 is fixedly connected to the upper end of the connecting cylinder 8, and a discharge hopper 9 is fixedly connected to the lower end of the connecting cylinder 8. A guide is fixedly connected to the lower end of the discharge hopper 9. Plate 10 and guide plate 10 are inclined relative to the horizontal plane. Spiral stirring plate 6 is fixedly connected to the inner wall of mixing box 5. The end of mixing box 5 that is closer to the moving frame 1 is fixedly sleeved to the output shaft of motor 7, and the end of mixing box 5 that is farther from the moving frame 1 is fixedly connected to connecting cylinder 8. Feed hopper 11 is hollow cone-shaped, and discharge hopper 9 is hollow trapezoidal. Feed hopper 11 is located on one side above discharge hopper 9. Guide plate 10 is arc-shaped plate. The width of guide plate 10 is greater than the width of discharge hopper 9. Discharge hopper 9 is located above guide plate 10. Baffle 15 is fixedly connected to the lower end of discharge hopper 9. Baffle 15 is located above guide plate 10. In use, two fixed frames 2 are fixedly connected to the top of moving frame 1. The upper end of fixed frame 2 is fixed. A first fixed ring 3 is connected, and a second fixed ring 4 is rotatably connected inside the first fixed ring 3. A mixing box 5 is arranged between the two fixed frames 2. The two ends of the mixing box 5 are respectively fixedly connected to the inner walls of the two second fixed rings 4, so that the moving frame 1 fixes the position of the first fixed ring 3 through the fixed frame 2, and the first fixed ring 3 restricts the rotation position of the mixing box 5 through the second fixed rings 4. The mixing box 5 is inclined relative to the horizontal plane, so that the concrete inside the mixing box 5 is not easy to overflow when it rotates. A motor 7 is fixedly connected to the top of the moving frame 1, and the output end of the motor 7 is fixedly sleeved with one end of the mixing box 5, so that the moving frame 1 fixes the position of the motor 7, and the motor 7 can drive the mixing box 5 to rotate after starting. The mixing box 5 passes through the second fixed ring. One end of the mixing tank 5 is fixedly connected to a connecting cylinder 8. The upper end of the connecting cylinder 8 is fixedly connected to a feed hopper 11, allowing workers to inject concrete into the mixing tank 5 through the feed hopper 11 and the connecting cylinder 8. The lower end of the connecting cylinder 8 is fixedly connected to a discharge hopper 9, and the lower end of the discharge hopper 9 is fixedly connected to a guide plate 10. The guide plate 10 is inclined relative to the horizontal plane, allowing the concrete in the mixing tank 5 to flow out through the connecting cylinder 8 and the discharge hopper 9 into the guide plate 10. The guide plate 10 changes the flow position, facilitating the use of concrete for grouting to reinforce the tunnel. A spiral mixing plate 6 is fixedly connected to the inner wall of the mixing tank 5, allowing workers to start a motor 7 to drive the mixing tank 5 and the spiral mixing plate 6 to rotate in opposite directions when moving the concrete in the mixing tank 5.This ensures that the concrete can only be mixed and stirred within the mixing chamber 5, preventing overflow. When the concrete needs to be discharged for grouting, the motor 7 is activated to rotate forward, allowing the concrete to be discharged from the mixing chamber 5. This allows for continuous mixing of the concrete during transportation, reducing the likelihood of the concrete solidifying on the inner wall of the mixing chamber 5 during transport. This ensures smooth discharge of the concrete from the mixing chamber 5 and allows for its long-term use. The end of the mixing chamber 5 closest to the moving frame 1 is fixedly connected to the output shaft of the motor 7, while the end furthest from the moving frame 1 is fixedly connected to the connecting cylinder 8. This prevents the concrete from overflowing from the inner cavity of the mixing chamber 5 when it rotates in the reverse direction. The concrete is discharged through the hollow conical feed hopper 11. The hopper 9 is a hollow trapezoid. The feed hopper 11 is located on one side above the discharge hopper 9, facilitating the addition of concrete into the mixing box 5 by workers through the feed hopper 11. This also reduces the likelihood of concrete falling into the discharge hopper 9 from the feed hopper 11, allowing the width of the discharge hopper 9 to be set smaller without affecting the concrete flow. The guide plate 10 is an arc-shaped plate, with a width greater than that of the discharge hopper 9. The discharge hopper 9 is located above the guide plate 10, allowing the guide plate 10 to catch the concrete flowing out of the discharge hopper 9 and prevent overflow. A baffle 15 is fixedly connected to the lower end of the discharge hopper 9, located above the guide plate 10, to prevent concrete from splashing.
[0025] As a preferred embodiment in this example, such as Figures 1-3 and Figure 5As shown, a connecting pipe 12 is movably sleeved at one end of the guide plate 10. An extension hose 13 is fixedly connected to one end of the connecting pipe 12. A discharge pipe 14 is fixedly connected to one end of the extension hose 13. Two connecting rods 16 are fixedly connected to one end of the guide plate 10. A connecting sleeve 17 is movably sleeved at the upper end of the connecting rod 16. The upper end of the connecting sleeve 17 slides through the connecting pipe 12 to the outside of the connecting pipe 12. Two springs 19 are fixedly connected to the outer wall of the connecting pipe 12. A connecting plate 18 is fixedly connected to one end of the two springs 19. Both ends of the connecting plate 18 are fixedly connected to the connecting sleeve 17. The connecting plate 18 and the two connecting sleeves 17 form a U-shape. The connecting sleeve 17 is located in the middle of the springs 19. A self-locking universal wheel is fixedly connected to the bottom end of the movable frame 1. One side of the top of the movable frame 1 is fixedly... A fixed push frame is connected to the top of the movable frame 1. A limit plate 20 is fixedly connected to the other side of the top of the movable frame 1. The limit plate 20 fits against the discharge pipe 14. A connecting pipe 12 is movably sleeved through one end of the guide plate 10. An extension hose 13 is fixedly connected to one end of the connecting pipe 12. The discharge pipe 14 is fixedly connected to one end of the extension hose 13. This allows the concrete held in the guide plate 10 to enter the connecting pipe 12. Then, the concrete in the connecting pipe 12 flows out through the extension hose 13 and the discharge pipe 14. This allows the operator to move the discharge pipe 14 to the required position as needed, making it convenient to use and improving its practicality. Two connecting rods 16 are fixedly connected to one end of the guide plate 10. A connecting sleeve 17 is movably sleeved on the upper end of the connecting rod 16. The upper end of the connecting sleeve 17 slides through the connecting rod. The outer wall of the connecting pipe 12 is fixedly connected to the outside of the connecting tube 12. Two springs 19 are fixedly connected to one end of each spring 19. A connecting plate 18 is fixedly connected to one end of each spring 19. Both ends of the connecting plate 18 are fixedly connected to the connecting sleeve 17. This allows the guide plate 10 to fix the position of the connecting rod 16, restricting the movement of the connecting pipe 12. The connecting pipe 12 also fixes the position of the springs 19, which in turn restrict the position of the connecting sleeve 17 via the connecting plate 18. This fixes the position of the connecting sleeve 17 and the connecting rod 16 after they are fitted together, thus fixing the position of the guide plate 10 and the connecting pipe 12. This makes it easy to connect and disassemble the guide plate 10 and the connecting pipe 12, facilitating the removal and cleaning of the connecting pipe 12 by workers, and preventing the connecting pipe 12 from facilitating cleaning. To prevent concrete buildup and solidification in the inner cavities of the extension hose 13 and discharge pipe 14 after prolonged use, the connecting pipe 12, extension hose 13, and discharge pipe 14 are designed for long-term use. A U-shape is formed by the connecting plate 18 and two connecting sleeves 17, ensuring stable relative positions and a stable connection between the connecting sleeves 17 and the connecting rod 16. The connecting sleeve 17 is positioned in the middle of the spring 19, preventing the spring 19 from interfering with its use. Self-locking casters are fixedly connected to the bottom of the movable frame 1 for easy movement. A pusher is fixedly connected to one side of the top of the movable frame 1 for convenient use. A limit plate 20 is fixedly connected to the other side of the top of the movable frame 1.The limiting plate 20 fits against the discharge pipe 14, restricting its movement. This allows the discharge pipe 14 to be positioned at the top of the moving frame 1 during movement, thus limiting its movement and facilitating the operation of the moving frame 1 by staff.
[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0027] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A reinforcement device for mined tunnels, comprising a mobile frame (1), characterized in that, The top of the movable frame (1) is fixedly connected to two fixed frames (2). The upper end of each fixed frame (2) is fixedly connected to a first fixed ring (3). A second fixed ring (4) is rotatably connected inside the first fixed ring (3). A mixing box (5) is provided between the two fixed frames (2). The two ends of the mixing box (5) are respectively fixedly connected to the inner walls of the two second fixed rings (4). The mixing box (5) is inclined relative to the horizontal plane. The top of the movable frame (1) is fixedly connected to a motor (7). 7) The output end is fixedly connected to one end of the mixing box (5). The end of the mixing box (5) that extends through to one side of the second fixing ring (4) is fixedly connected to the connecting cylinder (8). The upper end of the connecting cylinder (8) is fixedly connected to the feed hopper (11). The lower end of the connecting cylinder (8) is fixedly connected to the discharge hopper (9). The lower end of the discharge hopper (9) is fixedly connected to the guide plate (10). The guide plate (10) is inclined relative to the horizontal plane. The inner wall of the mixing box (5) is fixedly connected to the spiral stirring plate (6).
2. The tunnel reinforcement device according to claim 1, characterized in that, The end of the mixing box (5) that is closer to the moving frame (1) is fixedly connected to the output shaft of the motor (7), and the end of the mixing box (5) that is farther from the moving frame (1) is fixedly connected to the connecting cylinder (8).
3. The tunnel reinforcement device according to claim 1, characterized in that, The feed hopper (11) is a hollow cone, and the discharge hopper (9) is a hollow trapezoid. The feed hopper (11) is located on one side above the discharge hopper (9).
4. The tunnel reinforcement device according to claim 1, characterized in that, One end of the guide plate (10) is movably sleeved with a connecting pipe (12), one end of the connecting pipe (12) is fixedly connected to an extension hose (13), one end of the extension hose (13) is fixedly connected to a discharge pipe (14), one end of the guide plate (10) is fixedly connected with two connecting rods (16), the upper end of the connecting rod (16) is movably sleeved with a connecting sleeve (17), the upper end of the connecting sleeve (17) slides through the connecting pipe (12) to the outside of the connecting pipe (12), the outer wall of the connecting pipe (12) is fixedly connected with two springs (19), one end of the two springs (19) is fixedly connected with a connecting plate (18), both ends of the connecting plate (18) are fixedly connected to the connecting sleeve (17).
5. The tunnel reinforcement device according to claim 4, characterized in that, The connecting plate (18) and the two connecting sleeves (17) form a U-shape, with the connecting sleeves (17) located in the middle of the spring (19).
6. The tunnel reinforcement device according to claim 1, characterized in that, The guide plate (10) is an arc-shaped plate. The width of the guide plate (10) is greater than the width of the discharge hopper (9). The discharge hopper (9) is located above the guide plate (10). A baffle (15) is fixedly connected to the lower end of the discharge hopper (9). The baffle (15) is located above the guide plate (10).
7. The tunnel reinforcement device according to claim 4, characterized in that, The bottom end of the movable frame (1) is fixedly connected with a self-locking universal wheel, one side of the top end of the movable frame (1) is fixedly connected with a push frame, and the other side of the top end of the movable frame (1) is fixedly connected with a limiting plate (20), which is in contact with the discharge pipe (14).