Auxiliary tools to improve the smoothness of tunnel blasting excavation profile

Abstract

This utility model belongs to the field of tunnel hidden defect detection technology, specifically involving auxiliary tooling for improving the smoothness of tunnel blasting excavation outline. It includes a main platform, a stabilizing component at the bottom of the main platform, and a scraping device at the top. The scraping device includes an electric lifting column, with a support block fixedly connected to the telescopic end of the electric lifting column. A driving component is located on the side of the support block, and a linkage rod is fixedly connected to the driving pad of the driving component. A scraping plate is fixedly connected to the end of the linkage rod away from the driving end of the driving component. The driving component includes a driving motor, with its side fixedly connected to the side of the support block. This utility model solves the problem that existing auxiliary tooling cannot effectively grind and remove uneven areas on the tunnel inner wall, leading to discontinuities and layers within the poured surface during subsequent pouring, thus ensuring the normal formation of the tunnel.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel hidden defects detection technology, specifically involving auxiliary tooling for improving the smoothness of tunnel blasting excavation outline. Background Technology

[0002] Auxiliary tooling for tunnel blasting excavation profile smoothness is primarily used to ensure that the tunnel profile after blasting meets design requirements, avoiding over-blasting or irregular profiles. Common tooling includes laser smoothness measuring instruments, adjustable guide rails, templates, and laser scanning systems. Through these devices, workers can monitor the smoothness of the tunnel profile in real time, adjust the blasting plan or trim the profile as needed, ensuring construction quality and safety. Simultaneously, this tooling improves construction efficiency, reduces human error, and optimizes subsequent support construction.

[0003] Patent publication number CN120213980A discloses auxiliary tooling, ground-penetrating radar (GPR) equipment, a lightweight tunnel inspection vehicle, and a control method. The GPR includes a base, a GPR assembly, and an obstacle avoidance assembly. The base comprises a bottom plate and two side plates connected to opposite sides of the bottom plate. The GPR is mounted on the bottom plate and located between the side plates, with the surface of the GPR away from the bottom plate exposed at the edges of the side plates away from the bottom plate. The obstacle avoidance assembly is located on the surface of the side plates away from the GPR assembly, assisting the GPR assembly in avoiding irregular parts of the tunnel wall to be inspected. The auxiliary tooling provided by this patent can prevent collisions between the auxiliary tooling and irregular parts of the tunnel wall, reducing damage to the GPR equipment and tunnel ancillary facilities.

[0004] However, the current auxiliary tooling, ground-penetrating radar equipment, lightweight tunnel inspection vehicles and control methods have the following problems: the existing auxiliary tooling cannot effectively grind and remove the unevenness on the inner wall of the tunnel, which leads to the occurrence of faults and layers inside the pouring surface during subsequent pouring. Therefore, we propose auxiliary tooling to improve the flatness of the tunnel blasting excavation outline. Utility Model Content

[0005] The purpose of this utility model is to provide auxiliary tooling to improve the smoothness of the tunnel blasting excavation profile. It can solve the problem that existing auxiliary tooling in related technologies cannot effectively grind and remove uneven areas on the inner wall of the tunnel, resulting in discontinuity and layering inside the pouring surface during subsequent pouring.

[0006] The specific technical solution adopted by this utility model is as follows: An auxiliary tooling for improving the smoothness of the tunnel blasting excavation profile includes a main platform. A stabilizing component is provided at the bottom of the main platform, and a scraping device is provided at the top of the main platform. The scraping device includes an electric lifting column, a support block is fixedly connected to the telescopic end of the electric lifting column, a driving component is provided on the side of the support block, a linkage rod is fixedly connected to the driving pad of the driving component, and a scraping plate is fixedly connected to the end of the linkage rod away from the driving end of the driving component.

[0007] Preferably, the drive assembly includes a drive motor, the side of which is fixedly connected to the side of the support block, the output shaft of the drive motor is fixedly connected to a rotating shaft, a snap-fit ​​rotating ring is fixedly connected to the circumferential surface of the rotating shaft, and the linkage rod is fixedly connected to the outer wall of the snap-fit ​​rotating ring, wherein the snap-fit ​​rotating ring is provided as the drive end of the drive assembly.

[0008] Preferably, the stabilizing component includes a stabilizing support plate, the top of which is fixedly connected to the bottom of the main body platform, a stabilizing pad is provided at the bottom of the stabilizing support plate, and a tightening screw is provided at the top of the stabilizing support plate.

[0009] Preferably, the outer wall of the scraper is roughened, and the top and bottom of the scraper are both conical.

[0010] Preferably, a compaction device is provided on the side of the support block. The compaction device includes a mounting plate, the side of which is fixedly connected to the side of the support block. A shaped frame is fixedly connected to the top of the mounting plate. A stress-relieving base is rotatably connected to the outer wall of the shaped frame. An elastic telescopic rod is fixedly connected to the top of the stress-relieving base. A tamping hammer is fixedly connected to the telescopic end of the elastic telescopic rod.

[0011] Preferably, the elastic telescopic rod consists of a fixed rod, a telescopic rod, and an elastic element installed between the fixed rod and the telescopic rod, and the top of the tamping hammer is arc-shaped.

[0012] Preferably, the top of the tamping hammer is roughened, and the unloading base is made of a high-toughness, medium-soft material.

[0013] The technical effects achieved by this utility model are as follows: This invention utilizes a scraping device to coordinate the electric lifting column, support block, drive motor, rotating shaft, snap-fit ​​rotating ring, linkage rod, and scraper. The telescopic end of the electric lifting column drives the support block upward, causing the grinding part of the device to reach the designated grinding position. Once the device reaches the designated position, the operator starts the drive motor via an external controller. The output shaft of the drive motor rotates, causing the rotating shaft to rotate, which in turn rotates the snap-fit ​​rotating ring. The rotating ring then rotates the linkage rod, which in turn rotates the scraper. This rotation of the scraper allows for precise and effective grinding of uneven areas on the tunnel wall, preventing subsequent tunnel pouring from causing internal fractures and delamination due to unevenness on the poured surface.

[0014] This invention, through the setting of a compaction device, enables the positioning plate, irregular frame, unloading base, elastic telescopic rod, and tamping hammer to cooperate. The rotation of the unloading base drives the rotation of the elastic telescopic rod, which in turn drives the tamping hammer to rotate, thus aligning the tamping hammer with the designated tamping position. When the scraper plate rotates, it rotates and its inner wall contacts the top surface of the tamping hammer. When the two are in contact, the tamping hammer moves downward due to the force of the scraper plate. When the scraper plate rotates and passes the tamping hammer, the tamping hammer is no longer subject to the force of the scraper plate. Then, under the elastic force of the elastic telescopic rod, the telescopic end of the elastic telescopic rod drives the tamping hammer to repeatedly compact the loose and protruding parts, thereby further ensuring the stability of the tunnel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the entire utility model; Figure 2 This is a schematic diagram of the structure of the stabilizing support plate of this utility model; Figure 3 This is a schematic diagram of the structure of the drive motor of this utility model; Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the structure of the hammer in this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 1. Main platform; 2. Stabilizing components; 21. Stabilizing support plate; 22. Stabilizing pad; 23. Tightening screw; 3. Scraping device; 31. Electric lifting column; 32. Support block; 33. Drive motor; 34. Rotating shaft; 35. Snap-on rotating ring; 36. Linkage rod; 37. Scraping plate; 4. Compacting device; 41. Expansion plate; 42. Irregular frame; 43. Unloading base; 44. Elastic telescopic rod; 45. Hammer. Detailed Implementation

[0017] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0018] like Figure 1-5 As shown, the auxiliary tooling for improving the smoothness of the tunnel blasting excavation outline includes a main platform 1, a stabilizing component 2 at the bottom of the main platform 1, and a scraping device 3 at the top of the main platform 1. The scraping device 3 includes an electric lifting column 31, a support block 32 fixedly connected to the telescopic end of the electric lifting column 31, a driving component on the side of the support block 32, a linkage rod 36 fixedly connected to the driving pad of the driving component, and a scraping plate 37 fixedly connected to the end of the linkage rod 36 away from the driving end of the driving component. The scraping plate 37 is made of a high-toughness and high-wear-resistant material.

[0019] The drive assembly includes a drive motor 33, the side of which is fixedly connected to the side of the support block 32. The output shaft of the drive motor 33 is fixedly connected to a rotating shaft 34. A snap-type rotating ring 35 is fixedly connected to the circumferential surface of the rotating shaft 34. A linkage rod 36 is fixedly connected to the outer wall of the snap-type rotating ring 35. The snap-type rotating ring 35 is the drive end of the drive assembly. The drive motor 33 is electrically connected to an external controller and is a forward and reverse rotating motor.

[0020] The stabilizing component 2 includes a stabilizing support plate 21. The top of the stabilizing support plate 21 is fixedly connected to the bottom of the main body platform 1. A stabilizing pad 22 is provided at the bottom of the stabilizing support plate 21, and a tightening screw 23 is provided at the top of the stabilizing support plate 21. This is existing technology and will not be elaborated further.

[0021] The outer wall of the scraper 37 is roughened, and the top and bottom of the scraper 37 are both conical. The roughened surface can improve the efficiency of scraping and removing friction. Based on the above structure, when tunnel leveling calibration is required, the staff moves the device to the designated position. Then, the staff uses a special tool to rotate and tighten the rotating nail 23. The rotation of the rotating nail 23 ensures that the stabilizing support plate 21, through the stabilizing pad 22, reliably supports and secures itself to the ground. When tunnel inner wall leveling calibration is required, the staff first moves the device to the designated position. Then, the staff activates the electric lifting column 31 via an external controller. The telescopic end of the electric lifting column 31 drives the support block 32 upwards. The upward movement of the support block 32 causes the grinding part of the device to abut against... Once the device reaches the designated grinding position, the operator starts the drive motor 33 via the external controller. The output shaft of the drive motor 33 rotates, which in turn drives the rotating shaft 34 to rotate. The rotating shaft 34 then drives the snap-on rotating ring 35 to rotate, which in turn drives the linkage rod 36 to rotate. The linkage rod 36 then drives the scraper 37 to rotate. The rotation of the scraper 37 allows it to precisely and effectively grind the uneven areas on the inner wall of the tunnel, thereby preventing the formation of faults and layers inside the poured surface due to unevenness during subsequent tunnel pouring.

[0022] like Figure 1-5 As shown, a compaction device 4 is provided on the side of the support block 32. The compaction device 4 includes a mounting plate 41. The side of the mounting plate 41 is fixedly connected to the side of the support block 32. A shaped frame 42 is fixedly connected to the top of the mounting plate 41. A stress relief base 43 is rotatably connected to the outer wall of the shaped frame 42. An elastic telescopic rod 44 is fixedly connected to the top of the stress relief base 43. A tamping hammer 45 is fixedly connected to the telescopic end of the elastic telescopic rod 44. The top surface of the tamping hammer 45 is located on the movement trajectory of the inner wall of the scraper plate 37.

[0023] The elastic telescopic rod 44 consists of a fixed rod, a telescopic rod, and an elastic element installed between the fixed rod and the telescopic rod. The top of the tamping hammer 45 is curved, which is more conducive to the cooperation between the components.

[0024] The top of the tamping hammer 45 is roughened, and the unloading base 43 is made of a high-toughness, medium-soft material. The high-toughness, medium-soft material ensures that the entire device will not be damaged by the reverse impact force. According to the above structure, when loose protrusions appear on the tunnel surface, the workers rotate the unloading base 43. The rotation of the unloading base 43 drives the elastic telescopic rod 44 to rotate, which in turn drives the tamping hammer 45 to rotate, thus aligning the tamping hammer 45 with the designated tamping position. When the scraper 37 rotates, its inner wall contacts the top surface of the tamping hammer 45. When the two contact, the tamping hammer 45 moves downward due to the force of the scraper 37. When the scraper 37 rotates and passes the tamping hammer 45, the tamping hammer 45 is no longer subject to the force of the scraper 37. Then, under the elastic force of the elastic telescopic rod 44, the telescopic end of the elastic telescopic rod 44 drives the tamping hammer 45 to repeatedly compact the loose protrusions, thereby further ensuring the stability of the tunnel.

[0025] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An auxiliary tooling for improving the flatness of the tunnel blasting excavation profile, comprising a main platform (1), wherein a stabilizing component (2) is provided at the bottom of the main platform (1), characterized in that: The top of the main platform (1) is provided with a scraping device (3), which includes an electric lifting column (31). The telescopic end of the electric lifting column (31) is fixedly connected to a support block (32). The side of the support block (32) is provided with a driving component. The driving pad of the driving component is fixedly connected to a linkage rod (36). The end of the linkage rod (36) away from the driving end of the driving component is fixedly connected to a scraping plate (37).

2. The auxiliary tooling for improving the smoothness of tunnel blasting excavation outline according to claim 1, characterized in that: The drive assembly includes a drive motor (33), the side of which is fixedly connected to the side of the support block (32). The output shaft of the drive motor (33) is fixedly connected to a rotating shaft (34). A snap-type rotating ring (35) is fixedly connected to the circumferential surface of the rotating shaft (34). The linkage rod (36) is fixedly connected to the outer wall of the snap-type rotating ring (35). The snap-type rotating ring (35) is the drive end of the drive assembly.

3. The auxiliary tooling for improving the smoothness of tunnel blasting excavation profile according to claim 1, characterized in that: The stabilizing component (2) includes a stabilizing support plate (21), the top of which is fixedly connected to the bottom of the main body platform (1), a stabilizing pad (22) is provided at the bottom of the stabilizing support plate (21), and a tightening screw (23) is provided at the top of the stabilizing support plate (21).

4. The auxiliary tooling for improving the smoothness of tunnel blasting excavation outline according to claim 2, characterized in that: The outer wall of the scraper (37) is rough, and the top and bottom of the scraper (37) are both conical.

5. The auxiliary tooling for improving the smoothness of tunnel blasting excavation outline according to claim 2, characterized in that: The side of the support block (32) is provided with a compaction device (4). The compaction device (4) includes a mounting plate (41). The side of the mounting plate (41) is fixedly connected to the side of the support block (32). The top of the mounting plate (41) is fixedly connected to a shaped frame (42). The outer wall of the shaped frame (42) is rotatably connected to a stress relief base (43). The top of the stress relief base (43) is fixedly connected to an elastic telescopic rod (44). The telescopic end of the elastic telescopic rod (44) is fixedly connected to a tamping hammer (45).

6. The auxiliary tooling for improving the smoothness of tunnel blasting excavation outline according to claim 5, characterized in that: The elastic telescopic rod (44) is composed of a fixed rod and a telescopic rod, as well as an elastic element installed between the fixed rod and the telescopic rod. The top of the tamping hammer (45) is set with an arc surface.

7. The auxiliary tooling for improving the smoothness of tunnel blasting excavation outline according to claim 5, characterized in that: The top of the tamping hammer (45) is roughened, and the unloading base (43) is made of a high-toughness, medium-soft material.

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