Synchronous grouting weighing system of shield tunneling machine

Abstract

The utility model discloses a synchronous grouting weighing system of a shield tunneling machine and relates to a mortar tank, six mortar tank supporting legs are arranged at the bottom of the mortar tank, each mortar tank supporting leg is provided with a welding bottom plate and a weighing sensor, the tops of the six mortar tank supporting legs are connected with H-shaped steel at the bottom of the mortar tank in a welding mode through the welding bottom plates, and the weighing sensors are arranged on the welding bottom plates. The bottoms of the mortar tank supporting legs are welded with the shield tunneling machine trailer platform; the weighing sensors are arranged at the bottoms of supporting legs of the mortar tank, and the six weighing sensors jointly measure the weight of the mortar tank and monitor the real-time weight change of the mortar tank. The supporting leg is simple in structure, suitable for earth pressure balance and slurry balance shield tunneling machines at the same time, capable of adjusting the distance between the supporting legs according to the size of a mortar tank and wide in application range; the tops and the bottoms of the supporting legs are fixed through bolts and gaskets, disassembly and assembly are convenient, repeated use can be achieved, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to a synchronous grouting weighing system for a shield machine, belonging to the technical field of underground tunnel boring machine engineering. Background Art

[0002] The shield machine is a large-scale construction machine that integrates mechanical, electrical, hydraulic, and gas technologies. The fluid system mainly includes a centralized lubrication system, a shield tail grease system, a water system, a grouting system, a compressed air system, and a slag improvement system. Synchronous grouting system: During the excavation process of the shield machine, a sufficient amount of slurry material must be synchronously injected behind the lining segments that have escaped from the shield tail as quickly as possible to fill the annular building gap between the shield tail and the segments. Currently, the grouting in shield machine construction is based on the cutterhead excavation diameter, the outer diameter and length of the segments, and the shield machine's propulsion speed. The theoretical grouting volume for each ring is calculated, and sufficient grouting is achieved using mortar tanks and grouting pumps. Few are equipped with synchronous grouting weighing devices, and the real-time injection volume of mortar cannot be observed. There are cases where the actual construction does not match the theoretical calculation. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to address the defects of the existing technology and provide a weighing system for weighing the slurry inside the mortar tank, so as to monitor the weight of the injected mortar in real time, ensure that the mortar is injected in sufficient quantity, avoid problems such as pipe segment misalignment and floating, stabilize the pipe segments, reduce surface settlement, and ensure construction quality.

[0004] To solve this technical problem, the utility model provides a shield machine synchronous grouting weighing system, which involves a mortar tank. Six mortar tank legs are provided at the bottom of the mortar tank. The mortar tank legs are provided with a welded base plate and a weighing sensor. The tops of the six mortar tank legs are welded to the H-shaped steel at the bottom of the mortar tank through the welded base plate, and the bottoms of the mortar tank legs are welded to the shield machine trailer platform; the weighing sensor is arranged at the bottom of the mortar tank legs, and the six weighing sensors jointly measure the weight of the mortar tank and monitor the real-time weight changes of the mortar tank.

[0005] The mortar tank leg also includes a mounting plate three, an H-shaped steel, a mounting plate one, a mounting plate two, an H-shaped steel two, a washer one, a washer two, a bolt one, a bolt two, a bolt three and a washer three, and the welding base plate and the mounting plate three are connected by a washer one and a bolt one;

[0006] The two ends of the H-shaped steel are respectively welded to the mounting plate three and the mounting plate one to play a supporting role.

[0007] The H-shaped steel is made of steel with a specification of HW125×125-827.

[0008] The two ends of the H-shaped steel 2 are respectively welded to the mounting plate 3 and the H-shaped steel 1 to play a supporting role.

[0009] The H-shaped steel 2 is made of steel with a specification of HW125×125-450, and its two ends are cut.

[0010] The weighing sensor is fixed between the first mounting plate and the second mounting plate through the second washer, the second bolt, the third washer and the third bolt respectively.

[0011] The top and bottom of the mortar tank legs are both connected by threads, and the spacing between the legs can be adjusted to adapt to different mortar tank sizes.

[0012] Beneficial effects: The utility model has a simple structure and is suitable for both earth pressure balance and slurry balance shield machines. The distance between the legs can be adjusted according to the size of the mortar tank, and has a wide range of applications. The top and bottom of the legs are fixed by bolts and washers, which are easy to disassemble and assemble, and can be reused, saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic front view of the structure of the utility model;

[0014] Figure 2 It is a schematic side view of the structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the installation position of the utility model;

[0016] Figure 4 This is a schematic diagram of the installation of the entire machine of the present invention.

[0017] In the figure: 1. Welding base plate; 2. Mounting plate 3; 3. H-beam 1; 4. Mounting plate 1; 5. Mounting plate 2; 6. H-beam 2; 7. Washer 1; 8. Washer 2; 9. Bolt 1; 10. Bolt 2; 11. Bolt 3; 12. Washer 3; 13. Load cell. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and implementation examples.

[0019] like Figures 1-4 As shown, the utility model provides a shield machine synchronous grouting weighing system, which involves a mortar tank. Six mortar tank legs are provided at the bottom of the mortar tank. The mortar tank legs are provided with a welded base plate 1 and a weighing sensor 13. The tops of the six mortar tank legs are welded to the H-shaped steel at the bottom of the mortar tank through the welded base plate 1, and the bottoms of the mortar tank legs are welded to the shield machine trailer platform; the weight sensor 13 is arranged at the bottom of the mortar tank legs, and the six weighing sensors 13 jointly measure the weight of the mortar tank and monitor the real-time weight changes of the mortar tank.

[0020] The mortar tank legs also include mounting plate three 2, H-shaped steel one 3, mounting plate one 4, mounting plate two 5, H-shaped steel two 6, washer one 7, washer two 8, bolt one 9, bolt two 10, bolt three 11 and washer three 12. The welded base plate 1 and mounting plate three 2 are connected by washer one 7 and bolt one 9; the two ends of the H-shaped steel one 3 are respectively welded to the mounting plate three 2 and the mounting plate one 4 to play a supporting role.

[0021] The H-shaped steel 3 is made of steel with specification model HW125×125-827.

[0022] The two ends of the H-shaped steel 2 6 are respectively welded to the mounting plate 3 2 and the H-shaped steel 1 3 to play a supporting role.

[0023] The H-shaped steel 2 6 is made of steel with a specification model of HW125×125-450, and its two ends are cut.

[0024] The weighing sensor 13 is fixed between the mounting plate 1 4 and the mounting plate 2 5 by means of the second washer 8 , the second bolt 10 , the third washer 12 and the third bolt 11 .

[0025] The top and bottom of the mortar tank legs are both connected by threads, and the spacing between the legs can be adjusted to adapt to different mortar tank sizes; the threaded connection is convenient for disassembly and reuse.

[0026] The spacing between the mortar tank legs can be adjusted to accommodate different mortar tank sizes.

[0027] In actual operation, during the tunneling process of the shield machine, mortar is transported to the annular building gap between the shield tail and the pipe segments through the grouting pipeline. The weight of the mortar tank changes dynamically. The utility model can monitor the weight of the injected mortar in real time to ensure that sufficient mortar is injected and the construction quality is guaranteed.

[0028] The utility model has a simple structure and is suitable for earth pressure balance and slurry balance shield machines. The distance between the legs can be adjusted according to the size of the mortar tank and has a wide range of applications. The top and bottom of the legs are fixed by bolts and washers, which are easy to disassemble and assemble, can be reused, and save production costs.

[0029] The above embodiments of the present invention are merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A shield machine synchronous grouting weighing system, including a mortar tank, characterized in that: The bottom of the mortar tank is provided with six mortar tank legs, each of which is provided with a welded bottom plate (1) and a weighing sensor (13); the tops of the six mortar tank legs are welded to the H-shaped steel at the bottom of the mortar tank via the welded bottom plate (1), and the bottoms of the mortar tank legs are welded to the shield machine trailer platform; the weighing sensor (13) is arranged at the bottom of the mortar tank legs, and the six weighing sensors (13) jointly measure the weight of the mortar tank and monitor the real-time weight change of the mortar tank.

2. The shield machine synchronous grouting weighing system according to claim 1, characterized in that: The mortar tank support leg also includes a mounting plate three (2), an H-shaped steel one (3), a mounting plate one (4), a mounting plate two (5), an H-shaped steel two (6), a washer one (7), a washer two (8), a bolt one (9), a bolt two (10), a bolt three (11) and a washer three (12); the welded bottom plate (1) and the mounting plate three (2) are connected via a washer one (7) and a bolt one (9); the two ends of the H-shaped steel one (3) are respectively welded to the mounting plate three (2) and the mounting plate one (4) to play a supporting role.

3. The shield machine synchronous grouting weighing system according to claim 2, characterized in that: The H-shaped steel (3) is made of steel with a specification of HW125×125-827.

4. The shield machine synchronous grouting weighing system according to claim 2, characterized in that: The two ends of the H-shaped steel 2 (6) are respectively welded to the mounting plate 3 (2) and the H-shaped steel 1 (3) to play a supporting role.

5. The shield machine synchronous grouting weighing system according to claim 2, characterized in that: The H-shaped steel 2 (6) is made of steel with a specification model of HW125×125-450, and its two ends are cut.

6. The shield machine synchronous grouting weighing system according to claim 1, characterized in that: The weighing sensor (13) is fixed between the first mounting plate (4) and the second mounting plate (5) respectively through the second washer (8), the second bolt (10), the third washer (12) and the third bolt (11).

7. The shield machine synchronous grouting weighing system according to any one of claims 1 to 6, characterized in that: The top and bottom of the mortar tank legs are both connected by threads, and the spacing between the legs can be adjusted to adapt to different mortar tank sizes.

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