A subway shield tunnel annular gap multistage grouting construction device

Abstract

The utility model relates to the technical field of stirring support, concretely to a subway shield tunnel annular gap multistage grouting construction device. The utility model discloses a slurry tank, grout inlet, grouting pump and grouting pipe, the inside of slurry tank is equipped with stirring device, the stirring device includes two fixed plates, the side of two fixed plates is close to each other with slurry tank fixed connection, the fixed plate one side fixed connection has the output fixed connection of electric push rod and has the fixed block of assembling, two fixed blocks one end fixed connection has the adjusting plate, the side fixed connection of adjusting plate has the motor, the output fixed connection of motor has the transmission link. The utility model solves the problem that the slurry of traditional subway shield tunnel annular gap multistage grouting construction device is static storage, only initial single stirring by manual or simple mechanism, if adjusting grouting rhythm or short -term shutdown in construction, the slurry in slurry tank will lose fluidity due to static setting, and partial solidification phenomenon occurs, influence the follow -up grouting.

Description

Technical Field

[0001] This utility model relates to the field of mixing support technology, and in particular to a multi-stage grouting construction device for the annular gap of a subway shield tunnel. Background Technology

[0002] The multi-stage grouting construction device for the annular gap of a subway shield tunnel is a specialized equipment system used in subway shield construction to grout and fill the annular gap of the tunnel. Its core function is to accurately inject specific grouts (such as cement grout, cement mortar, etc.) into the annular gap formed by the shield tunnel through a multi-stage grouting structure to ensure that the gap is filled tightly and to ensure the stability of the tunnel structure.

[0003] In existing technologies, the grout in multi-stage grouting construction devices for annular gaps in subway shield tunnels is mostly statically stored. It is only initially stirred manually or by a simple mechanism. If the grouting rhythm is adjusted or the machine is briefly stopped during construction, the grout in the grout tank will lose its fluidity due to static setting and partially solidify, affecting subsequent grouting. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing multi-stage grouting construction devices for annular gaps in subway shield tunnels, where the grout is mostly statically stored. Therefore, this invention proposes a multi-stage grouting construction device for annular gaps in subway shield tunnels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-stage grouting construction device for annular gaps in subway shield tunnels, comprising a grout tank, a grout inlet, a grouting pump, and a grouting pipe. The grout tank is equipped with a stirring device, which includes two fixed plates. The two fixed plates are fixedly connected to the grout tank on one side, and an assembly block is fixedly connected to the output end of an electric push rod on one side of each fixed plate. An adjusting plate is fixedly connected to one end of each of the two assembly blocks. A motor is fixedly connected to one side of the adjusting plate. A transmission rod is fixedly connected to the output end of the motor, and a stirring rod is fixedly connected to one end of the transmission rod.

[0006] The effect achieved by the above components is as follows: the motor starts and drives the transmission rod to rotate, causing the stirring rod to rotate. Then, the electric push rod is started, causing the output end of the electric push rod to reciprocate and extend. This, through the assembly block, drives the adjustment plate to move, causing the motor to move, thereby adjusting the position of the stirring rod during rotation.

[0007] Preferably, two telescopic rods are fixedly connected to one side of the adjusting plate, and one end of the two telescopic rods is fixedly connected to the slurry tank.

[0008] The effect achieved by the above components is to enable the adjustment plate to move and extend / retract the output end of the telescopic rod, thereby preventing the adjustment plate from shifting position during movement.

[0009] Preferably, a reinforcing plate is fixedly connected to the arc surface of the telescopic rod, and an outer cover is fixedly connected to one end of the two reinforcing plates that are close to each other. One end of the outer cover is fixedly connected to the slurry tank.

[0010] The effect achieved by the above components is to stabilize the position of the telescopic rod with the reinforcement plate.

[0011] Preferably, a scraper ring is slidably connected to the arc surface of the transmission rod, and one end of the scraper ring is fixedly connected to the slurry tank.

[0012] The effect achieved by the above-mentioned components is that the scraper ring scrapes off the external attachments of the transmission rod during the movement process.

[0013] Preferably, two round rods are fixedly connected to one side of the adjusting plate, and a limiting ring is slidably connected to the arc surface of the round rods. The arc surface of the limiting ring is fixedly connected to the fixing plate.

[0014] The effect achieved by the above components is that the movement of the adjusting plate causes the round rod to slide on the limiting ring, thus preventing the adjusting plate from shifting position during the movement.

[0015] Preferably, the outside of the stirring rod is provided with a scraping device, the scraping device including a connecting plate, one side of the connecting plate being fixedly connected to the stirring rod, and two support rods being fixedly connected to one side of the connecting plate.

[0016] The above components achieve the following effect: the support rod is fixed to the connecting plate, and the connecting plate is fixed to the stirring rod.

[0017] Preferably, a stabilizing plate is fixedly connected to one end of each of the two support rods, and a scraping plate is fixedly connected to one side of the stabilizing plate.

[0018] The aforementioned components achieve the following effect: the scraper plate is fixed to the stabilizing plate, and the stabilizing plate is fixed to the support rod.

[0019] Preferably, the arc surface of the support rod is fixedly connected to a cylinder.

[0020] The effect achieved by the above components is that the cylinder is fixed on the support rod.

[0021] Preferably, the two cylinders are fixedly connected to a stabilizing rod on their arc surfaces.

[0022] The effect achieved by the above components is to stabilize the rod and fix it to the cylinder.

[0023] In summary, the beneficial effects of this utility model are as follows: In this invention, when it is necessary to prevent the slurry from solidifying, the motor is started by the stirring device. The transmission rod drives the stirring rod to rotate and stir the slurry. At the same time, the electric push rod is controlled to reciprocate and extend. The assembly block and the adjustment plate drive the motor and the stirring rod to rise and fall synchronously, realizing mobile stirring. Through the stirring device, the problem of the slurry in the annular gap multi-stage grouting construction device of the subway shield tunnel being mostly statically stored and only stirred once manually or by a simple mechanism in the initial stage is solved. If the grouting rhythm is adjusted or the machine is paused for a short time during construction, the slurry in the slurry tank will lose its fluidity due to static standing and partially solidify, affecting subsequent grouting.

[0024] In this invention, by means of a scraping device, when it is necessary to prevent the slurry from adhering to the inner wall of the slurry tank, the rotation of the stirring rod will drive the scraping plate to rotate synchronously around the stirring rod as the axis, thereby continuously scraping off the slurry adhering to the inner wall of the slurry tank. By means of a scraping device, the problem of traditional multi-stage grouting construction devices for annular gaps in subway shield tunnels, which are not convenient for continuously scraping off the slurry adhering to the inner wall of the slurry tank, and which lack fluidity and are easy to solidify after long-term adhesion, is solved. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the stirring structure of this utility model; Figure 3 This is a partial cross-sectional view of the three-dimensional structure of this utility model; Figure 4 This is a schematic diagram of the scraping structure of this utility model.

[0026] Legend: 1. Slurry tank; 2. Mixing device; 201. Fixing plate; 202. Electric push rod; 203. Assembly block; 204. Adjusting plate; 205. Motor; 206. Transmission rod; 207. Mixing rod; 208. Outer cover; 209. Scraper ring; 210. Telescopic rod; 211. Reinforcing plate; 212. Round rod; 213. Limiting ring; 3. Scraping device; 31. Connecting plate; 32. Support rod; 33. Stabilizing plate; 34. Scraping plate; 35. Cylinder; 36. Stabilizing rod; 4. Slurry inlet; 5. Grouting pump; 6. Grouting pipe. Detailed Implementation

[0027] Reference Figure 1 and Figure 3 As shown, this utility model provides a technical solution: a multi-stage grouting construction device for the annular gap of a subway shield tunnel, including a grout tank 1, a grout inlet 4, a grouting pump 5 and a grouting pipe 6. The grout tank 1 is equipped with a stirring device 2 inside, and a scraping device 3 is provided outside the stirring rod 207.

[0028] The specific setup and function of the stirring device 2 and the scraping device 3 will be described in detail below.

[0029] Reference Figure 2 As shown in this embodiment: the stirring device 2 includes two fixed plates 201. The sides of the two fixed plates 201 that are close to each other are fixedly connected to the slurry tank 1. An assembly block 203 is fixedly connected to the output end of an electric push rod 202 on one side of each fixed plate 201. An adjusting plate 204 is fixedly connected to one end of each assembly block 203. A motor 205 is fixedly connected to one side of the adjusting plate 204. A transmission rod 206 is fixedly connected to the output end of the motor 205. A stirring rod 207 is fixedly connected to one end of the transmission rod 206. This achieves the effect of adjusting the position of the stirring rod 207 during rotation by starting the output end of the motor 205, causing the transmission rod 206 to rotate, and then starting the electric push rod 202, causing its output end to reciprocate. This reciprocates and extends, moving the adjusting plate 204 via the assembly block 203, thus moving the motor 205. Two telescopic rods 210 are fixedly connected to one side of the adjusting plate 204, with one end of each telescopic rod 210 fixedly connected to the slurry tank 1. The adjustment plate 204 moves, causing the output end of the telescopic rod 210 to extend and retract, preventing the adjustment plate 204 from shifting position during movement. A reinforcing plate 211 is fixedly connected to the arc surface of the telescopic rod 210. An outer cover 208 is fixedly connected to one end of the two reinforcing plates 211 that are close to each other. One end of the outer cover 208 is fixedly connected to the slurry tank 1. This ensures the reinforcing plate 211 stabilizes the position of the telescopic rod 210. A scraper ring 209 is slidably connected to the arc surface of the transmission rod 206. One end of the scraper ring 209 is fixedly connected to the slurry tank 1. This ensures the scraper ring 209 scrapes away any external attachments to the transmission rod 206 during movement. Two round rods 212 are fixedly connected to one side of the adjustment plate 204. A limit ring 213 is slidably connected to the arc surface of the round rod 212. The arc surface of the limit ring 213 is fixedly connected to the fixed plate 201. This achieves the effect of the adjusting plate 204 moving to drive the round rod 212 to slide on the limiting ring 213, thus preventing the adjusting plate 204 from shifting position during movement.

[0030] Reference Figure 4 As shown, in this embodiment: the scraping device 3 includes a connecting plate 31, one side of which is fixedly connected to the stirring rod 207, and two support rods 32 are fixedly connected to one side of the connecting plate 31. This achieves the effect of the support rods 32 being fixed to the connecting plate 31, and the connecting plate 31 being fixed to the stirring rod 207. A stabilizing plate 33 is fixedly connected to one end of each of the two support rods 32, and a scraping plate 34 is fixedly connected to one side of the stabilizing plate 33. This achieves the effect of the scraping plate 34 being fixed to the stabilizing plate 33, and the stabilizing plate 33 being fixed to the support rods 32. A cylinder 35 is fixedly connected to the arc surface of the support rod 32. This achieves the effect of the cylinder 35 being fixed to the support rod 32. A stabilizing rod 36 is fixedly connected to the arc surfaces of the two cylinders 35. This achieves the effect of the stabilizing rod 36 being fixed to the cylinder 35.

[0031] Working principle: When it is necessary to prevent the slurry from solidifying, the operator first connects the electric push rod 202 and the motor 205 to the controller and starts the motor 205. The output end of the motor 205 drives the transmission rod 206 to rotate, which drives the stirring rod 207 to stir the slurry in the slurry tank 1. At the same time, the controller controls the output end of the electric push rod 202 to reciprocate, which drives the adjusting plate 204 and the motor 205 to move as a whole through the assembly block 203, so that the transmission rod 206 drives the stirring rod 207 to rise synchronously in the slurry tank 1. The adjustment plate 204 moves, and the telescopic rod 210 extends and retracts with it. The round rod 212 slides within the limiting ring 213, which can effectively prevent the adjustment plate 204 from shifting. Through the mixing device 2, the problem of the grout in the annular gap of the subway shield tunnel being mostly statically stored and only initially stirred manually or by a simple mechanism is solved. If the grouting rhythm is adjusted or the machine is briefly stopped during construction, the grout in the grout tank 1 will lose its fluidity due to static standing and partially solidify, affecting subsequent grouting.

[0032] When it is necessary to prevent slurry from adhering to the inner wall of slurry tank 1, the operator first fixes the connecting plate 31 to the stirring rod 207 and uses the support rod 32 to position the stabilizing plate 33, so that the scraping plate 34 is in close contact with the inner wall of slurry tank 1. When the stirring rod 207 rotates, it will drive the scraping plate 34 to rotate synchronously around the stirring rod 207 as the axis, thereby continuously scraping off the slurry adhering to the inner wall of slurry tank 1. Through the scraping device 3, the problem of traditional multi-stage grouting construction devices for annular gaps in subway shield tunnels, which are not convenient for continuously scraping off the slurry adhering to the inner wall of slurry tank 1, lack of fluidity due to long-term adhesion, and easy solidification is solved.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A multi-stage grouting construction device for the annular gap of a subway shield tunnel, comprising a grout tank (1), a grout inlet (4), a grouting pump (5), and a grouting pipe (6), characterized in that: The slurry tank (1) is equipped with a stirring device (2). The stirring device (2) includes two fixed plates (201). The two fixed plates (201) are fixedly connected to the slurry tank (1) on one side of each other. An assembly block (203) is fixedly connected to the output end of an electric push rod (202) on one side of the fixed plate (201). An adjusting plate (204) is fixedly connected to one end of the two assembly blocks (203). A motor (205) is fixedly connected to one side of the adjusting plate (204). A transmission rod (206) is fixedly connected to the output end of the motor (205). A stirring rod (207) is fixedly connected to one end of the transmission rod (206).

2. The multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 1, characterized in that: Two telescopic rods (210) are fixedly connected to one side of the adjusting plate (204), and one end of the two telescopic rods (210) is fixedly connected to the slurry tank (1).

3. The multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 2, characterized in that: The arc surface of the telescopic rod (210) is fixedly connected to a reinforcing plate (211), and an outer cover (208) is fixedly connected to one end of the two reinforcing plates (211) that are close to each other. One end of the outer cover (208) is fixedly connected to the slurry tank (1).

4. The multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 3, characterized in that: The arc surface of the transmission rod (206) is slidably connected to a scraper ring (209), and one end of the scraper ring (209) is fixedly connected to the slurry tank (1).

5. The multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 2, characterized in that: Two round rods (212) are fixedly connected to one side of the adjusting plate (204). A limiting ring (213) is slidably connected to the arc surface of the round rod (212). The arc surface of the limiting ring (213) is fixedly connected to the fixing plate (201).

6. The multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 1, characterized in that: The stirring rod (207) is provided with a scraping device (3) on the outside. The scraping device (3) includes a connecting plate (31). One side of the connecting plate (31) is fixedly connected to the stirring rod (207), and two support rods (32) are fixedly connected to one side of the connecting plate (31).

7. The multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 6, characterized in that: One end of each of the two support rods (32) is fixedly connected to a stabilizing plate (33), and a scraper plate (34) is fixedly connected to one side of the stabilizing plate (33).

8. The multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 7, characterized in that: The support rod (32) is fixedly connected to a cylinder (35) on its arc surface.

9. A multi-stage grouting construction device for the annular gap of a subway shield tunnel according to claim 8, characterized in that: The two cylinders (35) are fixedly connected to the arc surfaces by a stabilizing rod (36).

Images