Grouting device for geotechnical engineering

Abstract

The utility model relates to a geotechnical engineering grouting device which comprises a trolley, a stirring barrel, a material box and a grouting pump, a rotating shaft is vertically arranged in the stirring barrel, a barrel bottom scraping rod and a wall scraper are arranged on the rotating shaft, the barrel bottom scraping rod is in contact with the barrel bottom of the stirring barrel, and the wall scraper comprises two self-adaptive telescopic rods. The two self-adaptive telescopic rods are vertically arranged on the rotating shaft and are perpendicular to the rotating shaft, one end of each self-adaptive telescopic rod is in threaded connection with the rotating shaft, the other end of each self-adaptive telescopic rod is fixedly connected with a scraping plate, vertical insertion grooves are formed in the two sides of each scraping plate respectively, a rubber scraping strip is movably inserted into the insertion grooves in the same side of the two scraping plates, and one side of each rubber scraping strip is attached to the inner wall of the stirring barrel. According to the utility model, the slurry can be uniformly stirred, and the stirring barrel is automatically cleaned, so that the slurry is prevented from precipitating and solidifying on the bottom and the wall of the stirring barrel.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering technology and relates to a grouting device for grouting reinforcement of rock masses. Background Technology

[0002] During the construction of roads, bridges, tunnels, and other building projects, unstable soil and rock areas often require grouting reinforcement. Commonly used grouting devices include mixing tanks, where solid materials are mixed with water to form a slurry, which is then pumped into the soil and rock fissures to increase the strength and stability of the soil and rock. However, the materials are not easily mixed evenly in the mixing tank, which can affect the grouting quality; the slurry also tends to settle and adhere to the bottom and walls of the tank, requiring frequent cleaning and increasing the workload.

[0003] Patent CN220521342U discloses a grouting device for geotechnical engineering. A vertically mounted rotating shaft is installed inside a mixing tank, with multiple stirring rods circumferentially mounted on the shaft. Each shaft also has a circumferentially mounted scraper. The scraper contacts the tank wall, and the rotation of the shaft drives the stirring rods to stir the mixture, while the scraper cleans the tank wall. However, since the scraper is fixed to the rotating shaft, long-term rotational friction can cause wear or deformation of the scraper, reducing its contact with the inner wall of the mixing tank and making it difficult to thoroughly clean the tank wall. Furthermore, grout can easily remain in the dead corner at the connection between the rotating shaft and the stirring rods, causing blockage of the rotating shaft after solidification. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a geotechnical engineering grouting device that facilitates thorough cleaning of the mixing tank.

[0005] The technical solution of this utility model is as follows:

[0006] A grouting device for geotechnical engineering includes a handcart, a mixing drum, a material box, and a grouting pump. The mixing drum is mounted on the handcart, and an equipment platform is fixedly mounted on top of the mixing drum. A motor is mounted on the equipment platform. A rotating shaft is vertically mounted inside the mixing drum, with its lower end rotatably positioned at the bottom of the mixing drum and its upper end passing through the equipment platform and connected to the output end of the motor. The material box is located above the mixing drum and has a discharge port leading to the mixing drum. The grouting pump is mounted on the handcart and is connected to the mixing drum via a conduit. The device is characterized in that: a bottom scraper and a... The vessel wall scraper includes at least two scraper rods equidistantly arranged circumferentially along a direction perpendicular to the rotating shaft, each scraper contacting the bottom of the mixing vessel. Each scraper comprises two adaptive telescopic rods, arranged vertically on the rotating shaft and perpendicular to it. One end of each adaptive telescopic rod is screwed to the rotating shaft, and the other end is fixedly connected to a scraper. Each scraper has vertical slots on both sides, and a rubber scraper strip is movably inserted into the slot on the same side of both scrapers. One side of the rubber scraper strip is in contact with the inner wall of the mixing vessel.

[0007] This utility model has the following advantages compared with the prior art:

[0008] (1) The bottom scraper and the wall scraper rotate under the drive of the rotating shaft, which stirs the slurry in the bucket. At the same time, the bottom scraper can clean the bottom of the bucket to prevent the material from settling and condensing at the bottom of the bucket. The adaptive telescopic rod of the wall scraper can keep the scraper and flexible scraper in contact with the inner wall of the mixing bucket, ensuring thorough cleaning of the bucket wall.

[0009] (2) The wall scraper is detachably connected to the rotating shaft. After removal, the dead corner between the telescopic rod and the rotating shaft can be cleaned.

[0010] (3) The handcart carrying the mixing tank is equipped with a lifting positioning frame. During the grouting operation, the positioning frame is supported on the ground to ensure the stability of the device. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the stirring shaft of this utility model;

[0013] Figure 3 This is a structural schematic diagram of the self-tightening scraper of this utility model. Detailed Implementation

[0014] like Figure 1 , Figure 2 , Figure 3As shown, this utility model includes a handcart 1, a mixing tank 2, a material box 3, and a grouting pump 4. The mixing tank 4 is mounted on the handcart, and an equipment platform 5 is fixedly mounted on the top of the mixing tank. A motor 6 is mounted on the equipment platform 5. A rotating shaft 21 is vertically mounted inside the mixing tank 2. The lower end of the rotating shaft is rotatably mounted at the bottom of the mixing tank 2, and the upper end of the rotating shaft passes through the equipment platform 5 and is connected to the output end of the motor 6. The material box 3 is located above the mixing tank 2 and has a discharge port leading to the mixing tank. The grouting pump 4 is mounted on the handcart 1 and is connected to the mixing tank 2 through a conduit. The rotating shaft 21 is equipped with a bottom scraper 22 and a wall scraper. At least two bottom scrapers 22 are equidistantly arranged circumferentially on the rotating shaft in a direction perpendicular to the rotating shaft, and each bottom scraper 22 contacts the bottom of the mixing tank 2. At least two wall scrapers are equidistantly arranged circumferentially on the rotating shaft in a direction perpendicular to the rotating shaft. Each wall scraper includes two adaptive telescopic rods 23, which are arranged vertically on the rotating shaft and perpendicular to the rotating shaft. One end of each adaptive telescopic rod 23 is screwed to the rotating shaft 21, and the other end is fixedly connected to a scraper 24. Each scraper has vertical slots 241 on both sides. A rubber scraper strip 25 is movably inserted into the slot 241 on the same side of the two scrapers. One side of the rubber scraper strip 25 is in contact with the inner wall of the mixing tank 2.

[0015] In the above structure, during grouting, water is added to the mixing tank, and solid materials are simultaneously added to the mixing tank through the material box. The motor is started to drive the rotating shaft to rotate, which in turn drives the bottom scraper and the wall scraper to rotate, thus stirring the materials to form a slurry. At the same time, since the bottom scraper 22 is in contact with the bottom of the mixing tank 2, it can prevent the materials from settling at the bottom of the tank. The rubber scraper 25 of the wall scraper is in contact with the inner wall of the mixing tank 2, which can prevent the slurry from solidifying on the tank wall, thereby making the slurry more evenly stirred. The grouting pump is then started to inject the slurry in the tank into the rock strata.

[0016] After grouting is completed, add clean water to the mixing tank, and continue to start the motor to drive the bottom scraper and wall scraper to rotate, which can automatically clean the bottom and wall of the tank thoroughly.

[0017] Because the adaptive telescopic rod of the wall scraper is screwed to the rotating shaft, the wall scraper can be removed for cleaning after the device has been used for a period of time to prevent the slurry from sticking in the dead corner between the adaptive telescopic rod and the rotating shaft; the rubber scraper is movably installed on the scraper plate and can be pulled out for replacement after it is worn to a certain extent.

[0018] like Figure 3As shown in the illustration, in one specific embodiment of this utility model, each adaptive telescopic rod 23 of the wall scraper includes a fixed rod 231 and a movable rod 232. One end of the fixed rod 231 is provided with a screw and screwed to the rotating shaft 21. The fixed rod 231 has a cavity, which opens at the other end. A spring 233 is provided inside the cavity. One end of the movable rod 232 is movably inserted into the cavity of the fixed rod and presses against the spring 233, while the other end is fixedly connected to the scraper 24. This structure, by having the spring press the movable rod outwards, ensures that the rubber scraper always adheres to the inner wall of the mixing tank.

[0019] like Figure 2 , Figure 3 As shown, in a specific implementation of this utility model, in order to further improve the cleaning effect on the inner wall of the mixing tank, the outer side of the scraper 24 can be set as an arc surface, and the arc surface of the scraper 24 is in contact with the inner wall of the mixing tank 2; the scraper 24 and the rubber scraper 25 work together to clean the tank wall.

[0020] like Figure 1 As shown in the figure, in a specific embodiment of the present utility model, the handcart 1 includes a carrying platform 11. Four vertical rods 12 are fixedly installed at the four vertices of the rectangle at the bottom of the carrying platform. Each vertical rod is equipped with a traveling wheel 13. A vertical plate 14 is provided on one side of the carrying platform, and a horizontal support plate 15 is provided on the top of one side of the vertical plate. The mixing tank 2 and the grouting pump 4 are installed on the carrying platform 11 of the handcart, and the material box 3 is fixedly supported on the horizontal support plate 15.

[0021] The grouting pump vibrates during operation. To prevent the vibration of the grouting pump from causing the wheels of the handcart to move, in a specific implementation of this utility model, a positioning frame can be provided at the bottom of the handcart. The positioning frame includes a longitudinal rod 16, with a horizontal rod 17 fixedly connected to each end of the longitudinal rod. A hydraulic lifting rod 18 is fixedly connected between the top surface of the longitudinal rod and the bottom surface of the handcart's bearing platform. The hydraulic lifting rod can be a hydraulic cylinder. Each horizontal rod 17 has multiple positioning cones 171 at its bottom. Each vertical rod 12 of the handcart has a vertical groove 121 on its inner wall. Each horizontal rod 17 has its two ends inserted into the grooves 121 on the inner walls of two opposite vertical rods and can slide up and down along the grooves.

[0022] During grouting, push the handcart to the designated position, activate the hydraulic lifting rod to extend it, and lower the positioning frame until the positioning cone 171 at the bottom of the positioning frame crossbar is inserted into the ground, which ensures the stability of the device during grouting. After grouting at one position is completed, activate the hydraulic telescopic rod to retract it, raise the positioning frame, and push the handcart to the next construction position.

Claims

1. A grouting device for geotechnical engineering, comprising a handcart, a mixing drum, a material box, and a grouting pump, wherein the mixing drum is mounted on the handcart, an equipment platform is fixedly mounted on the top of the mixing drum, a motor is mounted on the equipment platform, a rotating shaft is vertically mounted inside the mixing drum, the lower end of the rotating shaft is rotatably mounted at the bottom of the mixing drum, and the upper end of the rotating shaft passes through the equipment platform and is connected to the output end of the motor, the material box is located above the mixing drum, the material box has a discharge port leading to the mixing drum, and the grouting pump is mounted on the handcart, and the grouting pump is connected to the mixing drum via a conduit, characterized in that: The rotating shaft is equipped with a bottom scraper and a wall scraper. At least two bottom scrapers are equidistantly arranged circumferentially on the rotating shaft in a direction perpendicular to the shaft, and each bottom scraper contacts the bottom of the mixing tank. At least two wall scrapers are equidistantly arranged circumferentially on the rotating shaft in a direction perpendicular to the shaft. Each wall scraper includes two adaptive telescopic rods, which are arranged vertically on the rotating shaft and perpendicular to the shaft. One end of each adaptive telescopic rod is screwed to the rotating shaft, and the other end is fixedly connected to a scraper. Each scraper has vertical slots on both sides, and a rubber scraper strip is movably inserted into the slot on the same side of the two scrapers. One side of the rubber scraper strip is in contact with the inner wall of the mixing tank.

2. The geotechnical engineering grouting device according to claim 1, characterized in that: Each of the adaptive telescopic rods includes a fixed rod and a movable rod. One end of the fixed rod is provided with a screw and is screwed to a rotating shaft. The fixed rod has a cavity inside, and the cavity of the fixed rod opens at the other end of the fixed rod. A spring is provided inside the cavity. One end of the movable rod is movably inserted into the cavity of the fixed rod and presses against the spring, while the other end is fixedly connected to the scraper.

3. The geotechnical engineering grouting device according to claim 1, characterized in that: The outer surface of the scraper is arc-shaped, and the arc-shaped surface of the scraper is in contact with the inner wall of the mixing tank.

4. The geotechnical engineering grouting device according to claim 1, characterized in that: The handcart includes a carrying platform. Four vertical rods are fixedly installed at the four vertices of a rectangle at the bottom of the carrying platform. Each vertical rod is equipped with a walking wheel. A vertical plate is installed on one side of the carrying platform, and a horizontal support plate is installed on the top of one side of the vertical plate. The mixing tank and the grouting pump are installed on the carrying platform of the handcart, and the material box is fixedly supported on the horizontal support plate.

5. The geotechnical engineering grouting device according to claim 4, characterized in that: The handcart has a positioning frame at the bottom, which includes a vertical rod with a horizontal rod fixedly connected to each end. A hydraulic lifting rod is fixedly connected between the top surface of the vertical rod and the bottom surface of the handcart's carrying platform. Each horizontal rod has multiple positioning cones at its bottom. Each vertical rod of the handcart has a vertical groove on its inner wall. Each horizontal rod has its two ends inserted into the grooves on the inner walls of two opposite vertical rods and can slide up and down along the grooves.

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