Ground micro-hole vacuum grouting repair tool

Abstract

The utility model relates to ground grouting technical field discloses ground micropore vacuum grouting repair tool, including cylindrical cavity, the inside installation of cylindrical cavity has extrusion mechanism, the effect of extrusion mechanism is extruding filling pulp, the including piston of extrusion mechanism, the top wall middle part rotationally connected with threaded rod of piston, the top fixedly connected with top cover of cylindrical cavity, the piston screw thread connection in the middle part of top cover, the top installation of cylindrical cavity has operating assembly. In the utility model, rotate the disc and drive threaded rod rotation, the fixed seat is fixed on the top cover and supports its rotation, the fixed seat and top cover middle part screw thread and threaded rod outer wall screw thread engagement, when threaded rod rotation drives piston to slide in cylindrical cavity extruding filling pulp, this structure uses screw thread to replace manual pressing, solves the problem that present technical precision control and stable output pressure, precision are insufficient.

Description

Technical Field

[0001] This utility model relates to the field of ground grouting technology, and in particular to a ground microporous vacuum grouting repair tool. Background Technology

[0002] In the fields of building construction, municipal roads and underground pipeline maintenance, when micropore defects are caused by ground settlement and cracks, vacuum grouting technology is often used for repair. This technology uses vacuum negative pressure to draw repair grout into the micropores to achieve structural reinforcement and leakage control. The core execution component is the grouting repair tool, and its core functional unit is the piston drive mechanism. Through the reciprocating motion of the piston in the grouting cylinder, the grout is extracted and pressurized for injection, which directly affects the stability of grouting pressure, grout delivery efficiency and ease of operation.

[0003] Most current mainstream ground micropore vacuum grouting repair tools adopt a press-type piston drive structure. Manually pressing the piston rod repeatedly moves the piston axially within the grouting cylinder. During pressing, the piston descends, applying pressure and forcing the grout through the injection nozzle into the micropores. Upon resetting, a spring returns the piston upwards, using vacuum pressure to extract the grout from the grout tank. The grouting pressure relies entirely on manual pressing force, resulting in large pressure fluctuations. Manual pressing requires continuous vertical force, and hand fatigue during operation easily leads to a decrease in pressing frequency, reducing grouting efficiency. To address these shortcomings, existing technologies attempt to add an adjustable... The counterweight increases the upper limit of grouting pressure by increasing the initial pressing force. Another solution uses a symmetrical arrangement of double springs to enhance reset stability. However, these improvements still have significant shortcomings. The counterweight can only increase the maximum pressure, but cannot achieve precise control and stable output of pressure, resulting in insufficient accuracy. On the other hand, although the double spring structure can alleviate the problem of elastic decay to a certain extent, it does not fundamentally change the drive method that relies on spring reset. After long-term use, the reset efficiency will still decrease and the vacuum degree will be unstable. In addition, the additional spring components also increase the assembly complexity and maintenance cost of the device. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a ground microporous vacuum grouting repair tool, which aims to improve the existing technology's inability to achieve precise pressure control and stable output, insufficient precision, and increased assembly complexity and maintenance costs of the device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a ground microporous vacuum grouting repair tool, comprising a cylindrical cavity, an extrusion mechanism installed inside the cylindrical cavity, the extrusion mechanism being used to squeeze and fill grout, a discharge mechanism installed at the bottom end of the cylindrical cavity, the discharge mechanism being used to adjust the grout discharge angle; the extrusion mechanism includes a piston, the piston being slidably connected inside the cylindrical cavity, a threaded rod being rotatably connected to the middle of the top wall of the piston, a top cover being fixedly connected to the top of the cylindrical cavity, the piston being threadedly connected to the middle of the top cover, and an operating component being installed on the top of the cylindrical cavity.

[0006] As a further description of the above technical solution:

[0007] The operating component includes a fixed base, which is fixedly connected to the top wall of the top cover. The threaded rod is threadedly connected to the middle of the fixed base, and a turntable is fixedly connected to the top end of the threaded rod.

[0008] As a further description of the above technical solution:

[0009] The discharge mechanism includes a conical shroud threaded to the bottom end of a cylindrical cavity, and the bottom end of the conical shroud is connected to a flow assembly.

[0010] As a further description of the above technical solution:

[0011] The flow assembly includes a connecting pipe connected to the bottom end of the conical cover, the bottom end of the connecting pipe being connected to a ball shaft, the inner wall of the ball shaft being rotatably connected to a rotating pipe, and a locking assembly being installed inside the ball shaft.

[0012] As a further description of the above technical solution:

[0013] The locking assembly includes a bolt threaded into the inside of a ball bearing, and a friction pad rotatably connected to the end of the bolt.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the cylindrical cavity is provided with scale lines, and the top of the outer wall of the conical cover is provided with anti-slip texture.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the cylindrical cavity is provided with a height indicator groove, and the bottom end of the rotating tube is connected to a liquid outlet.

[0018] As a further description of the above technical solution:

[0019] A fixing nut is fixedly connected to the middle of the top wall of the turntable, and a handle is rotatably connected to the outer side of the top wall of the turntable.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the rotating turntable drives the threaded rod to rotate, and the fixed seat is fixed on the top cover to support its rotation. The threads in the middle of the fixed seat and the top cover mesh with the threads on the outer wall of the threaded rod. When the threaded rod rotates, it drives the piston to slide up and down in the cylindrical cavity to squeeze out the filling slurry. This structure uses threaded propulsion to replace manual pressing, which solves the problems of insufficient precision and inability to accurately control and stabilize the output pressure in the existing technology.

[0022] 2. In this utility model, the extruded filling slurry enters the connecting pipe through the conical cover. The bottom of the connecting pipe is connected to a ball shaft and has a rotating pipe inside. When adjusting the extrusion angle, the rotating pipe is rotated to the target direction. After adjustment, the bolt is tightened inward to make the friction pad stick to the outer surface of the rotating pipe. The direction of the rotating pipe is locked by friction. This mechanism can change the extrusion angle according to construction needs, enhancing the flexibility of use. Attached Figure Description

[0023] Figure 1 This is a front view of the ground microporous vacuum grouting repair tool proposed in this utility model;

[0024] Figure 2 This is a perspective view of the ground microporous vacuum grouting repair tool proposed in this utility model;

[0025] Figure 3 This is a split view of the extrusion mechanism of the ground microporous vacuum grouting repair tool proposed in this utility model;

[0026] Figure 4 This is a split view of the discharge mechanism of the ground microporous vacuum grouting repair tool proposed in this utility model;

[0027] Figure 5 This is a split view of the locking component at point A of the ground microporous vacuum grouting repair tool proposed in this utility model.

[0028] Legend:

[0029] 1. Cylindrical cavity; 2. Extrusion mechanism; 201. Piston; 202. Threaded rod; 203. Top cover; 204. Operating assembly; 2041. Fixed seat; 2042. Turntable; 3. Discharge mechanism; 301. Conical cover; 302. Flow assembly; 3021. Connecting pipe; 3022. Ball shaft; 3023. Rotating pipe; 303. Locking assembly; 3031. Bolt; 3032. Friction pad; 4. Anti-slip texture; 5. Scale line; 6. Height indicator groove; 7. Fixing nut; 8. Handle; 9. Liquid outlet. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a ground microporous vacuum grouting repair tool, including a cylindrical cavity 1, an extrusion mechanism 2 installed inside the cylindrical cavity 1, the function of the extrusion mechanism 2 is to squeeze the filling grout, and a discharge mechanism 3 is installed at the bottom end of the cylindrical cavity 1, the function of the discharge mechanism 3 is to adjust the grout discharge angle.

[0032] The extrusion mechanism 2 includes a piston 201, which is slidably connected inside the cylindrical cavity 1. A threaded rod 202 is rotatably connected to the middle of the top wall of the piston 201. A top cover 203 is fixedly connected to the top of the cylindrical cavity 1. The piston 201 is threadedly connected to the middle of the top cover 203. An operating component 204 is installed on the top of the cylindrical cavity 1. A fixing nut 7 is fixedly connected to the middle of the top wall of the turntable 2042. A handle 8 is rotatably connected to the outer side of the top wall of the turntable 2042.

[0033] Specifically, the outer wall of piston 201 fits against the inner wall of cylindrical cavity 1, allowing it to move up and down along the cavity wall inside cylindrical cavity 1. During movement, it compresses the space inside cylindrical cavity 1 or extracts external filling slurry. The operator holds the edge of turntable 2042 and rotates it. The center of turntable 2042 is fixedly connected to the top of threaded rod 202, thereby driving threaded rod 202 to rotate around its own axis. Top cover 203 covers the top opening of cylindrical cavity 1, serving as a top seal. Its edge is fixed to the top of cylindrical cavity 1 through a connector, sealing the internal space of cylindrical cavity 1. Fixed seat 2041... The screw is fixed to the center of the upper surface of the top cover 203. The inner wall of the fixing seat 2041 is provided with a bearing to support the relative rotation of the fixing seat 2041 and the threaded rod 202. The fixing seat 2041 and the top cover 203 are both provided with through internal threads in the middle. The internal threads mesh with the external threads on the outer wall of the threaded rod 202. The threaded rod 202 moves up and down along the thread trajectory while rotating. The bottom end of the threaded rod 202 is hinged to the upper surface of the piston 201 by a pin, thereby driving the piston 201 to slide up and down along the cavity wall inside the cylindrical cavity 1, pushing the filling slurry in the cylindrical cavity 1 to be squeezed out from the outlet.

[0034] Reference Figure 4 and Figure 5The discharge mechanism 3 includes a conical cover 301, which is threaded to the bottom end of the cylindrical cavity 1. The bottom end of the conical cover 301 is connected to a flow assembly 302. The flow assembly 302 includes a connecting pipe 3021, which is connected to the bottom end of the conical cover 301. The bottom end of the connecting pipe 3021 is connected to a ball shaft 3022. The inner wall of the ball shaft 3022 is rotatably connected to a rotating pipe 3023. A locking assembly 303 is installed inside the ball shaft 3022. The locking assembly 303 includes a bolt 3031, which is threaded to the inside of the ball shaft 3022. The end of the bolt 3031 is rotatably connected to a friction pad 3032.

[0035] The top of the outer wall of the conical cover 301 is provided with anti-slip texture 4, and the bottom end of the rotating tube 3023 is connected to the liquid outlet 9.

[0036] Specifically, after the extruded filler slurry flows out from the outlet of the cylindrical cavity 1, it enters through the large opening of the conical cover 301 and flows along the inner wall of the cone. Finally, it moves from the small opening of the conical cover 301 to one end opening of the connecting pipe 3021. The bottom port of the connecting pipe 3021 is fixedly connected to the top of the ball shaft 3022. The internal cavity of the ball shaft 3022 communicates with the internal cavity of the connecting pipe 3021. One end of the rotating pipe 3023 installed inside the connecting pipe 3021 is embedded in the cavity of the ball shaft 3022 and can rotate around the center of the ball shaft 3022. When it is necessary to adjust the extrusion angle of the filler slurry... The operator holds the end of the rotating tube 3023 and rotates it to the desired extrusion direction according to the construction requirements. After the angle is adjusted, the bolt 3031 on the side wall of the ball shaft 3022 is tightened inward with a tool or by hand. The bolt 3031 moves inward along the threaded hole on the ball shaft 3022, pushing the friction pad 3032 at its end to gradually press against the outer surface of the rotating tube 3023. The friction between the friction pad 3032 and the rotating tube 3023 is used to lock the direction of the rotating tube 3023 and prevent it from shifting its angle during the extrusion of the filling slurry.

[0037] Reference Figure 1 and Figure 2 The outer wall of the cylindrical cavity 1 is provided with scale lines 5 and height indication grooves 6.

[0038] Specifically, the height indicator 6 is made of transparent acrylic material, which can display the remaining amount of filling slurry inside the cylindrical cavity 1, and the scale line 5 assists in judging the capacity reading, improving the accuracy of extrusion.

[0039] Working principle: The piston 201 moves up and down inside the cylindrical cavity 1 to squeeze and extract the filling slurry. The rotating disc 2042 drives the threaded rod 202 to rotate. The top cover 203 is the top cover and plays a sealing role. The fixed seat 2041 is fixed on the top cover 203 and supports the rotation of the fixed seat 2041. The fixed seat 2041 and the top cover 203 are both threaded in the middle, which meshes with the thread on the outer wall of the threaded rod 202. While the threaded rod 202 rotates, it drives the piston 201 to slide up and down inside the cylindrical cavity 1 and squeeze out the filling slurry. This structure uses threaded propulsion to replace manual pressing, which solves the problem that the existing technology cannot achieve precise pressure control and stable output, and the insufficient precision increases the assembly complexity and maintenance cost of the device.

[0040] The extruded filler slurry is moved from the conical cover 301 to the connecting pipe 3021. The bottom of the connecting pipe 3021 is connected to a ball shaft 3022, and a rotating pipe 3023 rotates inside. When the extrusion angle needs to be adjusted, the rotating pipe 3023 is rotated to the direction to be extruded. After the angle is adjusted, the bolt 3031 is tightened inward so that the friction pad 3032 is in close contact with the outer surface of the rotating pipe 3023. The direction of the rotating pipe 3023 is locked by friction. This mechanism can change the extrusion angle according to construction needs, which enhances the flexibility of use.

[0041] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ground microporous vacuum grouting repair tool, comprising a cylindrical cavity (1), characterized in that: An extrusion mechanism (2) is installed inside the cylindrical cavity (1). The function of the extrusion mechanism (2) is to squeeze the filling slurry. A discharge mechanism (3) is installed at the bottom end of the cylindrical cavity (1). The function of the discharge mechanism (3) is to adjust the slurry discharge angle. The extrusion mechanism (2) includes a piston (201), which is slidably connected inside the cylindrical cavity (1). A threaded rod (202) is rotatably connected to the middle of the top wall of the piston (201). A top cover (203) is fixedly connected to the top of the cylindrical cavity (1). The piston (201) is threadedly connected to the middle of the top cover (203). An operating component (204) is installed on the top of the cylindrical cavity (1).

2. The ground microporous vacuum grouting repair tool according to claim 1, characterized in that: The operating component (204) includes a fixed base (2041) which is fixedly connected to the top wall of the top cover (203). The threaded rod (202) is threadedly connected to the middle part of the fixed base (2041), and a turntable (2042) is fixedly connected to the top end of the threaded rod (202).

3. The ground microporous vacuum grouting repair tool according to claim 1, characterized in that: The discharge mechanism (3) includes a conical cover (301) which is threaded to the bottom end of the cylindrical cavity (1) and the bottom end of the conical cover (301) is connected to a flow assembly (302).

4. The ground microporous vacuum grouting repair tool according to claim 3, characterized in that: The flow assembly (302) includes a connecting pipe (3021) connected to the bottom end of the conical cover (301). The bottom end of the connecting pipe (3021) is connected to a ball shaft (3022). The inner wall of the ball shaft (3022) is rotatably connected to a rotating pipe (3023). A locking assembly (303) is installed inside the ball shaft (3022).

5. The ground microporous vacuum grouting repair tool according to claim 4, characterized in that: The locking assembly (303) includes a bolt (3031) which is threaded into the inside of a ball bearing (3022), and a friction pad (3032) is rotatably connected to the end of the bolt (3031).

6. The ground microporous vacuum grouting repair tool according to claim 3, characterized in that: The outer wall of the cylindrical cavity (1) is provided with scale lines (5), and the top of the outer wall of the conical cover (301) is provided with anti-slip texture (4).

7. The ground microporous vacuum grouting repair tool according to claim 4, characterized in that: The outer wall of the cylindrical cavity (1) is provided with a height indication groove (6), and the bottom end of the rotating tube (3023) is connected to a liquid outlet (9).

8. The ground microporous vacuum grouting repair tool according to claim 2, characterized in that: A fixing nut (7) is fixedly connected to the middle of the top wall of the turntable (2042), and a handle (8) is rotatably connected to the outer side of the top wall of the turntable (2042).

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