Grouting equipment for secondary grouting of shield tunnel

Abstract

The utility model discloses grouting equipment for secondary grouting of a shield tunnel, which comprises a base, an air cylinder is fixed at the center of the upper surface of the base, the extending end of the air cylinder is connected with an upper support plate through a first bearing, the side of the front surface of the upper support plate is connected with a rotating rod through a second bearing, and the outer end of the rotating rod is fixedly connected with a positioning disc. A sleeve is fixed to the front face of the positioning disc, a grouting pipe capable of being drawn is inserted into the sleeve, the outer shell of the air cylinder is further sleeved with a rotating cylinder, a side supporting plate is welded and fixed to the outer side face of the rotating cylinder, an inclined supporting plate is hinged to the side supporting plate, and an anti-skid plate is fixed to the bottom of the inclined supporting plate. The grouting equipment for secondary grouting of the shield tunnel is simple in structure, easy and convenient to operate and high in flexibility and adaptability, the height, the direction and the inclination angle of the grouting pipe can be conveniently and rapidly adjusted, the grouting pipe can be rapidly and accurately inserted into grouting holes in different directions and inclination angles, the grouting pipe is firmly fixed, and the grouting efficiency is improved. And secondary grouting can be efficiently carried out.

Description

Technical Field

[0001] The utility model relates to the field of shield tunnel grouting equipment, in particular to grouting equipment for secondary grouting of a shield tunnel. Background Art

[0002] Shield tunneling is a fully mechanized construction method in the underground excavation method. It pushes the shield machine into the ground, and supports the surrounding rock with the shield shell and segments to prevent collapse into the tunnel. At the same time, a cutting device is used to excavate the soil in front of the excavation face, and the soil is transported out of the hole by the excavation machinery. The jack is used to pressurize and push it forward at the rear, and precast concrete segments are assembled to form a mechanized construction method of the tunnel structure. After the tunnel is initially formed, grouting is used to fill the gap between the segments and the rock wall. After the grouting solidifies, the ground deformation and surface settlement are controlled and the strength is improved. However, there may be local uneven filling or voids due to the consolidation and shrinkage of the grouting. Gaps are formed, so secondary grouting is required to further fill the gaps and form a dense waterproof layer. At present, when performing secondary grouting, the surface settlement monitoring information feedback is used, combined with the method of ultrasonic detection inside the tunnel to detect whether there are cavities behind the lining of the pipe segment, to locate the secondary grouting position, and then drill holes for grouting. Since the grouting position is uncertain, the drilling position is also uncertain. However, the traditional grouting equipment used for secondary grouting in shield tunnels is not convenient for quickly adjusting the height, direction and inclination angle of the grouting pipe, resulting in the grouting pipe being unable to be quickly and accurately inserted into grouting holes in different directions. Due to the inflexible structure, its adjustment performance is limited, making it difficult to perform secondary grouting efficiently.

[0003] In order to solve the above problems, we propose a grouting equipment for secondary grouting of shield tunnels, which improves the shortcomings of existing technologies. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a grouting device for secondary grouting of a shield tunnel. In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The utility model discloses a grouting equipment for secondary grouting of a shield tunnel, comprising a base, a cylinder fixed at the center of the upper surface of the base, the protruding end of the cylinder is connected to an upper support plate through a first bearing, a rotating rod is connected to the side of the front side of the upper support plate through a second bearing, the outer end of the rotating rod is fixedly connected to a positioning plate, a sleeve is fixed on the front side of the positioning plate, a withdrawable grouting pipe is inserted in the sleeve, a rotating drum is also sleeved on the outer shell of the cylinder, side support plates are welded and fixed on the outer side surface of the rotating drum, and an oblique support plate is hinged on the side support plate, and an anti-skid plate is fixed to the bottom of the oblique support plate, a side plate is also fixed on the front side of the upper support plate, an extrusion screw is threadedly connected to the side plate, and the upper end of the extrusion screw is rotatably connected to an extrusion block.

[0006] Preferably, sleeves are fixed on both sides of the middle of the cylinder.

[0007] Preferably, the concave surface of the extrusion block directly faces the bottom of the positioning plate, and a rubber pad is adhered to the concave surface of the extrusion block.

[0008] Preferably, two locking bolts are threadedly connected to the sleeve, and the grouting pipe is squeezed and fixed on the sleeve by the locking bolts.

[0009] Preferably, the cylinder is also electrically connected to a handheld remote control.

[0010] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0011] By arranging a rotatable upper portion at the top of the cylinder, a rotatable positioning plate is arranged on the upper support plate, a sleeve is arranged on the positioning plate, and the grouting pipe is inserted into the sleeve and fixed to the sleeve with a locking bolt. When the grouting equipment for secondary grouting of a shield tunnel is used, the grouting pipe is lifted and lowered by the cylinder to adjust the height, and the grouting pipe is rotated by the positioning plate to adjust the inclination angle and direction. The grouting equipment for secondary grouting of a shield tunnel with this structural design has a simple structure, simple operation, strong flexibility and adaptability, and is convenient for quickly adjusting the height, direction and inclination angle of the grouting pipe. The grouting pipe can be quickly and accurately inserted into grouting holes of different orientations and inclination angles, and the grouting pipe can be firmly fixed, so that secondary grouting can be carried out efficiently, thereby accelerating construction efficiency and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic structural diagram of the utility model as a whole;

[0014] Figure 2 This is a schematic structural diagram of the connection between the upper support plate and the positioning plate of the utility model;

[0015] Figure 3 This utility model Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0016] In the figure: 1. Base; 2. Cylinder; 3. Bearing 1; 4. Upper support plate; 5. Bearing 2; 6. Rotating rod; 7. Positioning plate; 8. Sleeve; 9. Grouting pipe; 10. Rotating drum; 11. Side support plate; 12. Diagonal support plate; 13. Anti-skid plate; 14. Sleeve; 15. Side plate; 16. Extrusion screw; 17. Extrusion block; 18. Locking bolt. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0018] Example

[0019] like Figure 1-3 As shown, a grouting equipment for secondary grouting of a shield tunnel comprises a base 1, a cylinder 2 is fixed at the center of the upper surface of the base 1, an upper support plate 4 is connected to the protruding end of the cylinder 2 through a bearing 1 3, a rotating rod 6 is connected to the side of the front of the upper support plate 4 through a bearing 2 5, the outer end of the rotating rod 6 is fixedly connected to a positioning plate 7, a sleeve 8 is fixed on the front of the positioning plate 7, a movable grouting pipe 9 is inserted in the sleeve 8, a rotating drum 10 is also sleeved on the outer shell of the cylinder 2, a side support plate 11 is welded and fixed on the outer surface of the rotating drum 10, and a diagonal support plate 12 is hinged on the side support plate 11, and the diagonal support plate 12 is hinged on the side support plate 11. An anti-skid plate 13 is fixed to the bottom of the plate 12, and a side plate 15 is fixed to the front of the upper support plate 4. An extrusion screw 16 is threadedly connected to the side plate 15, and the upper end of the extrusion screw 16 is rotatably connected to an extrusion block 17, forming an overall grouting equipment structure for secondary grouting of a shield tunnel. The structure is simple, the operation is simple, and it has strong flexibility and adaptability. It is convenient and quick to adjust the height, direction and inclination angle of the grouting pipe 9, and the grouting pipe 9 can be quickly and accurately inserted into grouting holes of different orientations and inclination angles, and the grouting pipe 9 is firmly fixed, so that secondary grouting can be carried out efficiently.

[0020] In this embodiment, sleeves 14 are fixed on both sides of the middle of the cylinder 2. When moving the equipment, workers can hold the sleeves 14 with their hands and lift the equipment away.

[0021] In this embodiment, the concave surface of the extrusion block 17 directly faces the bottom of the positioning plate 7, and a rubber pad is adhered to the concave surface of the extrusion block 17 to increase the tightness and firmness of the extrusion fit.

[0022] In this embodiment, two locking bolts 18 are threadedly connected to the sleeve 8, and the grouting pipe 9 is squeezed and fixed on the sleeve 8 by the locking bolts 18, which is convenient for quick locking and fixing.

[0023] In this embodiment, the cylinder 2 is also electrically connected to a handheld remote controller to facilitate the operation of the cylinder 2 .

[0024] The principle and advantages of the present invention are as follows: the grouting equipment for secondary grouting of the shield tunnel is placed next to the grouting hole, and then the inclined support plate 12 is lowered, and the anti-skid plate 13 is placed flat on the ground, so that the teeth at the bottom of the anti-skid plate 13 grab the ground, which plays a good stabilization and anti-skid role. The connecting end of the grouting pipe 9 is connected to the discharge end of the mortar pump with a hose, and then the handheld remote control of the cylinder 2 is connected to the power supply, the equipment is energized, and then the extrusion screw 16 is screwed down to bring the extrusion block 17 down, so that the extrusion block 17 is out of contact with the positioning plate 7, and the locking bolt 18 is screwed up to allow the grouting pipe 9 to be pulled in the sleeve 8. The worker holds the grouting pipe 9 with both hands, opens the cylinder 2 to push the upper support plate 4 to rise, and the height of the grouting pipe 9 is increased accordingly. The worker swings the grouting pipe 9 up and down to adjust its inclination angle so that its discharge end is directly facing the inclined grouting hole, and then pushes the grouting pipe 9 forward to insert its discharge pipe into the grouting hole, and then screws the extrusion screw up again After that, the grouting pipe 9 is firmly fixed in the sleeve 8, and the grouting pipe 9 is prevented from twitching.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A grouting device for secondary grouting of a shield tunnel, comprising a base (1), characterized in that: A cylinder (2) is fixed at the center of the upper surface of the base (1); an upper support plate (4) is connected to the protruding end of the cylinder (2) via a bearing 1 (3); a rotating rod (6) is connected to the side of the front of the upper support plate (4) via a bearing 2 (5); an outer end of the rotating rod (6) is fixedly connected to a positioning plate (7); a sleeve (8) is fixed on the front of the positioning plate (7); a movable grouting pipe (9) is inserted into the sleeve (8); and the outer shell of the cylinder (2) is provided with a plurality of slits. The body is also sleeved with a rotating drum (10), and a side support plate (11) is welded and fixed on the outer surface of the rotating drum (10), and a diagonal support plate (12) is hinged on the side support plate (11), and an anti-slip plate (13) is fixed to the bottom of the diagonal support plate (12), and a side plate (15) is also fixed on the front of the upper support plate (4), and an extrusion screw (16) is threadedly connected to the side plate (15), and the upper end of the extrusion screw (16) is rotatably connected to an extrusion block (17).

2. The grouting equipment for secondary grouting of a shield tunnel according to claim 1, characterized in that: Sleeves (14) are fixed on both sides of the middle of the cylinder (2).

3. The grouting equipment for secondary grouting of a shield tunnel according to claim 1, characterized in that: The concave surface of the extrusion block (17) is directly opposite to the bottom of the positioning plate (7), and a rubber pad is adhered to the concave surface of the extrusion block (17).

4. The grouting equipment for secondary grouting of a shield tunnel according to claim 1, characterized in that: Two locking bolts (18) are threadedly connected to the sleeve (8), and the grouting pipe (9) is squeezed and fixed on the sleeve (8) by the locking bolts (18).

5. The grouting equipment for secondary grouting of a shield tunnel according to claim 1, characterized in that: The cylinder (2) is also electrically connected to a handheld remote controller.

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