Subway civil engineering shield construction protection structure

Abstract

The utility model relates to the technical field of construction protection, in particular to a subway civil engineering shield construction protection structure which comprises a base, side baffles are fixedly connected to the two ends of the top of the base, sliding grooves are formed in the sides, close to each other, of the two side baffles, threaded rods are rotationally connected to the interiors of the sliding grooves, and sliding blocks are connected to the exteriors of the threaded rods in a threaded mode. The sliding blocks are slidably connected with the corresponding sliding grooves, and an upper baffle of an arc-shaped structure is fixedly connected between the two sliding blocks. The device has the advantages that geological conditions of a tunnel construction area are variable, the adjustable upper baffle can be adjusted according to soil pressure and soil texture conditions of different stratums, stability of a working face is improved, the soil pressure of the working face can be controlled by adjusting the position of the upper baffle, soil pressure balance in a soil bin is kept, and the working efficiency is improved. The shield tunneling machine is prevented from being affected by too large or too small soil pressure, tunnel collapse or excessive land subsidence is prevented, and compared with a traditional device, the operation quality and the use efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction protection, in particular to a subway civil engineering shield construction protection structure. Background Art

[0002] Subway civil engineering shield construction can complete the excavation and support of underground tunnels safely and quickly without damaging the surface or surrounding buildings (structures). The construction protection structure can support the underground soil layer, maintain the stability of the surrounding strata, and prevent ground subsidence, collapse, or damage to adjacent buildings and facilities caused by construction;

[0003] After searching, a Chinese patent discloses a subway civil engineering shield construction protection structure (authorization announcement number CN217681803U) including a support frame, an installation frame, the installation frame is fixedly connected to the surface of the support frame, the inner wall of the installation frame is rotatably connected with a bidirectional screw, the surface of the bidirectional screw is symmetrically screwed with a screw sleeve, the top of the screw sleeve is hinged with a support rod, the top of the support rod is hinged with a pressure plate, the inner wall of the installation frame is rotatably connected with a drive shaft, the top of the drive shaft is fixedly connected with a worm, one side of the worm is meshed with a worm wheel, the axis of the worm wheel is fixedly connected to the surface of the bidirectional screw, although the above patent technology can be used in conjunction with a worm wheel and worm, it has a self-locking effect, slows down the loosening of the bidirectional screw and the screw sleeve, thereby ensuring the stability of the pressure plate installation and improving the service life of the protection structure;

[0004] However, in the actual application of this patented technology, the height position of the upper baffle of the above-mentioned subway civil engineering shield construction protection structure cannot be adjusted when in use. On the one hand, the inability to adjust the height of the upper baffle may cause the soil pressure at the front end of the tunnel to be unable to be properly adjusted, thereby affecting the stability of the working face. On the other hand, different strata have different reaction forces on the shield machine. The inability to adjust the height of the upper baffle to adapt to these changes will cause the risk of tunnel collapse or working face instability. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a subway civil engineering shield construction protection structure.

[0006] The technical solution of the utility model is as follows: a subway civil engineering shield construction protection structure, including a base, both ends of the top of the base are fixedly connected with side baffles, the sides of the two side baffles close to each other are provided with sliding grooves, the interiors of the sliding grooves are rotatably connected with threaded rods, the exteriors of the threaded rods are threadedly connected with sliding blocks, the sliding blocks are slidably connected to the corresponding sliding grooves, an upper baffle with an arc-shaped structure is fixedly connected between the two sliding blocks, and both sides of the upper baffle are slidably connected to the sides of the two side baffles close to each other.

[0007] Through the above technical solution, the base serves as the main supporting part of the entire protective structure, and the two ends of the top are fixedly connected with side baffles to form a basic protective frame, which provides basic protection for the construction area and avoids the pollution of the surrounding environment by construction materials and soil. The sliding grooves on the side baffles facilitate the rotation of the threaded rods and are connected to the upper baffles through sliding blocks, allowing the upper baffles to be adjusted vertically. The height adjustment function of the upper baffles enables the protective structure to adapt to construction requirements at different heights, thereby enhancing the applicability of the protective structure.

[0008] As a preferred embodiment, two transmission grooves are opened inside the base, the transmission grooves are rotatably connected to the inside of the light rods, the outside of the light rods are fixedly connected to the first bevel gears, the bottoms of the threaded rods extend to the inside of the corresponding transmission grooves and are fixedly connected to the second bevel gears, and the second bevel gears are meshed with the corresponding first bevel gears.

[0009] Through the above technical solution, this transmission mechanism simplifies the power transmission process and improves the response speed and reliability of the entire adjustment system.

[0010] As a preferred embodiment, a driving groove is opened inside the base and between the two transmission grooves, a motor is fixedly connected to the top of the base, the output shaft of the motor extends to the inside of the driving groove and is fixedly connected to the third bevel gear, the ends of the two light rods that are close to each other extend to the inside of the driving groove and are fixedly connected to the fourth bevel gear, and the fourth bevel gears are meshingly connected to the third bevel gear.

[0011] Through the above technical solution, the precise control of the motor can be transmitted through the meshing of the third bevel gear and the fourth bevel gear, thereby improving the efficiency of regulation.

[0012] As a preferred embodiment, the interior of the sliding groove and both sides of the threaded rod are fixedly connected with limit rods, and the sliding blocks are slidably connected to the corresponding limit rods.

[0013] Through the above technical solution, the limit rod ensures that the upper baffle moves within the specified range, preventing equipment damage or safety accidents caused by excessive adjustment.

[0014] As a preferred embodiment, two support plates are fixedly connected inside the upper baffle plate, wherein reinforcing ribs are symmetrically fixedly connected between the top and bottom of one of the support plates and the inner wall of the upper baffle plate, and reinforcing rods are equidistantly fixedly connected between the top of the other support plate and the inner wall of the upper baffle plate.

[0015] The above technical solution ensures that the upper baffle can remain stable even under complex working conditions, thereby increasing the stability and durability of the structure.

[0016] As a preferred embodiment, two fixing plates are fixedly connected to both sides of the base, and anchor rods are arranged inside the fixing plates.

[0017] Through the above technical solution, the stability and safety of the protective structure during construction are ensured by fixing with anchor rods, and the structure is prevented from displacement due to construction vibration or other external forces.

[0018] As a preferred implementation manner, the motor is electrically connected to an external control device.

[0019] Through the above technical solution, automatic adjustment is achieved, which not only improves work efficiency, but also reduces the labor intensity of workers to a certain extent.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] In the utility model, the above-mentioned device rotates two threaded rods at the same time, and drives the upper baffle to adjust the height through the sliding block. On the one hand, the geological conditions in the tunnel construction area are changeable, and the adjustable upper baffle can be adjusted according to the earth pressure and soil conditions of different strata to improve the stability of the working face. On the other hand, by adjusting the position of the upper baffle, the earth pressure of the working face can be controlled, the earth pressure balance in the soil bin can be maintained, and the shield machine can be prevented from being affected by excessive or insufficient earth pressure, as well as tunnel collapse or excessive ground settlement. Compared with traditional devices, the operation quality and utilization efficiency are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a first-perspective stereogram of the present invention;

[0023] Figure 2 It is a second perspective stereogram of the utility model;

[0024] Figure 3 This is a third perspective stereogram of the utility model;

[0025] Figure 4 It is a partial cross-sectional schematic diagram of the utility model;

[0026] Figure 5 It is a partial structural schematic diagram of the utility model;

[0027] Figure 6 It is a partial structural schematic diagram of the utility model.

[0028] Legend: 1. Base; 2. Side baffle; 3. Sliding groove; 4. Threaded rod; 5. Upper baffle; 6. Transmission groove; 7. Light rod; 8. First bevel gear; 9. Second bevel gear; 10. Drive groove; 11. Motor; 12. Third bevel gear; 13. Fourth bevel gear; 14. Sliding block; 15. Limit rod; 16. Support plate; 17. Reinforcement rib; 18. Reinforcement rod; 19. Fixing plate; 20. Anchor rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a subway civil engineering shield construction protection structure, comprising a base 1, both ends of the top of the base 1 are fixedly connected with side baffles 2, the sides of the two side baffles 2 close to each other are provided with sliding grooves 3, the inside of the sliding grooves 3 are rotatably connected with threaded rods 4, the outside of the threaded rods 4 are threadedly connected with sliding blocks 14, the sliding blocks 14 are slidably connected with the corresponding sliding grooves 3, an upper baffle 5 of an arc structure is fixedly connected between the two sliding blocks 14, both sides of the upper baffle 5 are slidably connected with the sides close to the two side baffles 2, the base 1 of the above-mentioned device serves as the main supporting part of the entire protection structure, and the two ends of the top thereof are fixedly connected with side baffles 2 to form a basic protection frame, which provides basic protection for the construction area and avoids the pollution of the surrounding environment by construction materials and soil, the sliding grooves 3 on the side baffles 2 facilitate the rotation of the threaded rods 4, and are connected to the upper baffle 5 through the sliding blocks 14, allowing the upper baffle 5 to be vertically adjusted, and the height adjustment function of the upper baffle 5 enables the protection structure to adapt to construction requirements of different heights, thereby enhancing the applicability of the protection structure.

[0033] Among them, two transmission grooves 6 are opened inside the base 1, and the inside of the transmission grooves 6 is rotatably connected with a light rod 7, and the outside of the light rod 7 is fixedly connected with a first bevel gear 8. The bottom of the threaded rod 4 extends to the inside of the corresponding transmission groove 6 and is fixedly connected with a second bevel gear 9, and the second bevel gear 9 is meshed with the corresponding first bevel gear 8. The transmission mechanism of the above device simplifies the power transmission process and improves the response speed and reliability of the entire adjustment system.

[0034] Among them, a driving groove 10 is opened inside the base 1 and between the two transmission grooves 6, and a motor 11 is fixedly connected to the top of the base 1. The output shaft of the motor 11 extends to the inside of the driving groove 10 and is fixedly connected to the third bevel gear 12. The ends of the two light rods 7 that are close to each other extend to the inside of the driving groove 10 and are fixedly connected to the fourth bevel gear 13. The fourth bevel gear 13 is meshed with the third bevel gear 12. The precise control of the motor 11 of the above-mentioned device can be transmitted through the meshing of the third bevel gear 12 and the fourth bevel gear 13, thereby improving the efficiency of adjustment.

[0035] Among them, the interior of the sliding groove 3 and on both sides of the threaded rod 4 are fixedly connected with limit rods 15, and the sliding blocks 14 are slidably connected to the corresponding limit rods 15. The limit rods 15 of the above-mentioned device ensure that the upper baffle 5 moves within the specified range, preventing equipment damage or safety accidents caused by excessive adjustment.

[0036] Among them, two support plates 16 are fixedly connected inside the upper baffle 5, and reinforcing ribs 17 are symmetrically fixedly connected between the top and bottom of one support plate 16 and the inner wall of the upper baffle 5, and reinforcing rods 18 are equidistantly fixedly connected between the top of the other support plate 16 and the inner wall of the upper baffle 5. The above device ensures that the upper baffle 5 can remain stable even under complex working conditions, thereby increasing the stability and durability of the structure.

[0037] Among them, two fixing plates 19 are fixedly connected on both sides of the base 1, and anchor rods 20 are arranged inside the fixing plates 19. The above-mentioned device is fixed by the anchor rods 20 to ensure the stability and safety of the protective structure during construction and prevent the structure from being displaced due to construction vibration or other external forces.

[0038] Among them, the motor 11 is electrically connected to the external control device, and the above device realizes automatic adjustment, which not only improves the work efficiency, but also reduces the labor intensity of the workers to a certain extent.

[0039] Working principle:

[0040] like Figure 1-Figure 6As shown, when the above-mentioned device is in use, the entire device is first fixed by the anchor rod 20, and then the motor 11 is started to make the third bevel gear 12 mesh with the fourth bevel gear 13. When the fourth bevel gear 13 rotates, it will drive the light rod 7 to rotate, and at the same time drive the first bevel gear 8 to mesh with the second bevel gear 9, which can drive the threaded rod 4 to rotate. The sliding block 14 is driven up and down by the threaded rod 4 to adjust the height of the upper baffle 5. At the same time, the limit rod 15 is used to ensure smooth operation and prevent the sliding block 14 from derailing. The geological conditions in the tunnel construction area are changeable. The adjustable upper baffle 5 can be adjusted according to the soil pressure and soil conditions of different strata, thereby improving the stability of the working surface and greatly improving the operation quality and use efficiency compared with traditional devices.

[0041] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A subway civil engineering shield construction protection structure, comprising a base (1), characterized in that: Both ends of the top of the base (1) are fixedly connected with side baffles (2), and the sides of the two side baffles (2) that are close to each other are provided with sliding grooves (3), the interior of the sliding grooves (3) is rotatably connected with threaded rods (4), and the exterior of the threaded rods (4) is threadedly connected with sliding blocks (14), and the sliding blocks (14) are slidably connected to the corresponding sliding grooves (3), and an upper baffle (5) with an arc-shaped structure is fixedly connected between the two sliding blocks (14), and both sides of the upper baffle (5) are slidably connected to the sides of the two side baffles (2) that are close to each other.

2. A subway civil engineering shield construction protection structure according to claim 1, characterized in that: Two transmission grooves (6) are provided inside the base (1), the transmission grooves (6) are rotatably connected to a polished rod (7), the polished rods (7) are fixedly connected to a first bevel gear (8), the bottoms of the threaded rods (4) extend to the inside of the corresponding transmission grooves (6) and are fixedly connected to a second bevel gear (9), and the second bevel gears (9) are meshedly connected to the corresponding first bevel gears (8).

3. A subway civil engineering shield construction protection structure according to claim 2, characterized in that: A driving groove (10) is provided inside the base (1) and between the two transmission grooves (6); a motor (11) is fixedly connected to the top of the base (1); an output shaft of the motor (11) extends into the driving groove (10) and is fixedly connected to a third bevel gear (12); adjacent ends of the two light rods (7) extend into the driving groove (10) and are fixedly connected to a fourth bevel gear (13); and the fourth bevel gears (13) are meshingly connected to the third bevel gear (12).

4. A subway civil engineering shield construction protection structure according to claim 1, characterized in that: Limit rods (15) are fixedly connected inside the sliding groove (3) and on both sides of the threaded rod (4), and the sliding blocks (14) are slidably connected to the corresponding limit rods (15).

5. The subway civil engineering shield construction protection structure according to claim 1 is characterized by: Two support plates (16) are fixedly connected inside the upper baffle (5), wherein reinforcing ribs (17) are symmetrically fixedly connected between the top and bottom of one of the support plates (16) and the inner wall of the upper baffle (5), and reinforcing rods (18) are equidistantly fixedly connected between the top of the other support plate (16) and the inner wall of the upper baffle (5).

6. A subway civil engineering shield construction protection structure according to claim 1, characterized in that: Two fixing plates (19) are fixedly connected to both sides of the base (1), and anchor rods (20) are arranged inside the fixing plates (19).

7. A subway civil engineering shield construction protection structure according to claim 3, characterized in that: The motor (11) is electrically connected to an external control device.

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