CN219303105U

CN219303105U - Automatic monitoring and early warning device for high-formwork underground engineering danger large engineering of deep foundation pit

Info

Publication number: CN219303105U
Application number: CN202223302377.1U
Authority: CN
Inventors: 项小荣; 陈守港; 夏建军
Original assignee: Anhui Zhongxiang Information Technology Service Co ltd
Current assignee: Anhui Zhongxiang Information Technology Service Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-07-04
Anticipated expiration: 2032-12-07

Abstract

The utility model discloses an automatic monitoring and early warning device for a high formwork underground engineering danger large engineering of a deep foundation pit, which comprises a shell, wherein a displacement sensor is fixedly arranged at the top of the shell, a circuit board is arranged at the top of the inside of the shell, a warning lamp assembly is arranged on the outer wall of the shell, a warning clock assembly is arranged in the inside of the shell, a driving assembly is arranged in the inside of the shell, the warning lamp assembly comprises a first turntable, a second turntable, a lamp holder and a warning lamp, the right side of the top surface of the shell is rotationally connected with the first turntable, the top of the right side surface of the shell is rotationally connected with the second turntable, the second turntable and the first turntable are both provided with lamp holders, the lamp holder is provided with the warning lamp, and the displacement sensor is in signal connection with the circuit board through a signal wire; according to the utility model, the driving assembly is used for enabling the early warning lamp to rotate, so that obvious flickering lamplight is formed, nearby people are more obviously reminded, and meanwhile, the moving frame reciprocates left and right to drive the striking head to continuously strike the alarm clock, make a sound and remind nearby related people.

Description

Automatic monitoring and early warning device for high-formwork underground engineering danger large engineering of deep foundation pit

Technical Field

The utility model relates to the technical field of underground engineering construction, in particular to an automatic monitoring and early warning device for a high formwork underground engineering danger large engineering of a deep foundation pit.

Background

The deep foundation pit is a project with excavation depth exceeding 5 m (including 5 m), or the depth not exceeding 5 m, but geological conditions, surrounding environment and underground pipelines are particularly complex, the high formwork is formwork supporting operation when the formwork supporting height is more than or equal to 8m, the underground project is an underground civil engineering built for developing and utilizing underground space resources, and comprises underground houses and underground structures, underground railways, highway tunnels, underwater tunnels, underground common ditches, street crossing underground passages and the like, the underground project comprises the deep foundation pit and the high formwork supporting, the underground project belongs to dangerous engineering, and in the construction process, a device for detecting and early warning whether collapse danger exists in a construction site is needed for ensuring personal safety of staff.

When the prior early warning device is used, the attention of related personnel cannot be brought to the first time only by the lighting of the warning lamp, the early warning effect is poor, particularly when a bulb accidentally flashes out and cannot be lighted, the early warning effect cannot be achieved when a dangerous situation is encountered, and great potential safety hazard is caused; therefore, the automatic monitoring and early warning device for the deep foundation pit high formwork underground engineering danger large engineering is designed to solve the technical problems.

Disclosure of Invention

The utility model aims to provide an automatic monitoring and early warning device for a high-formwork underground engineering danger large project of a deep foundation pit, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a high formwork underground works danger big engineering automation monitoring early warning device of deep basal pit, includes the casing, and the fixed displacement sensor that is equipped with in casing top, top are equipped with the circuit board in the casing, and the casing outer wall is equipped with the early warning lamp subassembly, and the inside early warning clock subassembly that is equipped with of casing, the inside drive assembly that is equipped with of casing, the early warning lamp subassembly includes carousel one, carousel two, lamp stand and early warning lamp, and the rotation of casing top surface right side is connected with carousel one, and casing right side top rotates and is connected with carousel two, the equal fixedly connected with lamp stand of side of keeping away from the casing of carousel two and carousel one installs the early warning lamp on the lamp stand, through signal line signal connection between displacement sensor and the circuit board.

The early warning clock assembly comprises a warning clock, a fixed frame, a movable frame, incomplete gears, connecting rods and a beating head, wherein the fixed frame is symmetrically and fixedly connected with the front inner side wall and the rear inner side wall of the shell, the movable frame is arranged inside the fixed frame, the top surface of the movable frame is slidably connected with the inner side wall of the fixed frame, the bottom surface of the movable frame is slidably connected with the inner side wall of the shell, the connecting rods are fixedly arranged on the outer walls of the left side and the right side of the movable frame, the other ends of the connecting rods are provided with the beating head, through holes for the beating head to extend out are formed in the left side wall and the right side wall of the fixed frame, the left side and the right side of the fixed frame are symmetrically arranged on the warning clock, the bottom of the warning clock is fixedly connected with the inner side wall of the shell, the geometric center points of the warning clock, the through holes and the beating head are located on the same horizontal line, the incomplete gears are symmetrically rotated around the shell, and the two incomplete gears are located inside the fixed frame on one side of the corresponding part.

The driving assembly comprises a motor, a first rotating rod, a second rotating rod, a third rotating rod, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear, a fifth bevel gear and a sixth bevel gear, wherein the second rotating rod is fixedly connected between two incomplete gears, the second bevel gear is fixedly sleeved on the second rotating rod, the right end of the inner bottom wall of the shell is provided with the motor, the output shaft of the motor is connected with the first rotating rod, the other end of the first rotating rod horizontally extends leftwards and is connected with the first bevel gear, the first bevel gear is meshed with the second bevel gear, a plurality of bulges are respectively arranged on the upper surface and the lower surface opposite to each other on the inner side of the movable frame, and gear teeth are arranged on one quarter of the circumference on the outer side of the incomplete gears and meshed with the bulges; the fixed cover is equipped with the bevel gear three on the bull stick one, and the fixed plate that is equipped with of casing right side inner wall, fixed plate internal rotation are connected with the bull stick three, and the bull stick three runs through the fixed plate setting, and the bull stick three top upwards runs through the casing roof and with carousel one fixed connection, and the three bottom fixedly connected with bevel gear four of bull stick, bevel gear four meshes with the bevel gear three phase, and fixed cover is equipped with the bevel gear five on the bull stick three, and carousel two left surface fixedly connected with pivots, and the pivot other end stretches into inside the casing and is connected with the bevel gear six, and the bevel gear six meshes with the bevel gear five mutually, through signal line signal connection between circuit board and the motor, through signal line signal connection between circuit board and the early warning lamp.

As a preferred embodiment of the present utility model: the front side and the rear side of the shell are respectively provided with four through holes, the positions of the alarms correspond to each other one by one, and the through holes are provided with dust screens.

As a still further preferred embodiment of the present utility model: transparent covers are sleeved on the outer sides of the second turntable and the first turntable, and the transparent covers are fixedly connected with the outer wall of the shell.

As a still further preferred embodiment of the present utility model: the inner bottom wall of the shell is fixedly provided with a support plate, and one rotation of the rotating rod penetrates through the support plate.

As a still further preferred embodiment of the present utility model: the casing bottom is fixed to be set up the bottom plate, and four corners in bottom plate bottom all are equipped with the removal wheel, and bottom plate left surface fixedly connected with riser, riser top are equipped with the push handle, fixedly connected with firm board between riser and the casing.

As a still further preferred embodiment of the present utility model: the bottom plate bottom is provided with a groove, a plurality of hydraulic cylinders are fixedly arranged in the groove, the extending ends of the hydraulic cylinders are fixedly connected with limiting plates, and the limiting plates are in sliding connection with the inner side walls of the groove.

As a still further preferred embodiment of the present utility model: the size of the cross section of the limiting plate in the horizontal direction is the same as that of the cross section of the groove in the horizontal direction.

Compared with the prior art, the utility model has the beneficial effects that: the utility model is provided with the pre-alarm clock assembly, the pre-alarm lamp assembly and the driving assembly, the two pre-alarm lamps are rotated through the driving assembly, and the illumination brightness at two sides of the lamp holder is different due to the shielding of the lamp holder, and meanwhile, the lamp holder is matched with the lamp holder to rotate, so that obvious flickering lamplight is formed, nearby people are reminded more obviously, and the pre-alarm function is improved; meanwhile, the movable frame reciprocates left and right, so that the striking heads on the left side and the right side of the movable frame continuously strike the alarms on the respective sides, sound is generated, nearby related personnel are reminded, a driving assembly is utilized to realize the visual and audible dual early warning function, and the practicability of the device is greatly improved.

Drawings

FIG. 1 is a front view of the overall structure of the present utility model;

FIG. 2 is a front cross-sectional view of the overall structure of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of the bottom wall structure of the housing according to the present utility model;

wherein: the device comprises a 1-shell, a 2-vertical plate, a 3-stable plate, a 4-displacement sensor, a 5-turntable I, a 6-turntable II, a 7-dust screen, a 9-base plate, a 10-circuit board, a 11-turntable III, a 12-warning lamp, a 13-lamp holder, a 14-bevel gear VI, a 15-rotating shaft, a 16-fixed plate, a 17-bevel gear IV, a 18-motor, a 19-turntable I, a 20-bevel gear III, a 21-limiting plate, a 22-hydraulic cylinder, a 23-base, a 24-warning clock, a 25-fixed frame, a 26-movable frame, a 27-connecting rod, a 28-through hole, a 29-tapping head, a 30-turntable II, a 31-incomplete gear, a 32-bevel gear II, a 33-bevel gear I and a 34-support plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, in the embodiment of the utility model, the automatic monitoring and early warning device for the high formwork underground engineering danger large engineering of the deep foundation pit comprises a shell 1, wherein a displacement sensor 4 is fixedly arranged at the top of the shell 1, a circuit board 10 is arranged at the top of the shell 1, an early warning lamp assembly is arranged on the outer wall of the shell 1, an early warning clock assembly is arranged inside the shell 1, a driving assembly is arranged inside the shell 1, the early warning lamp assembly comprises a turntable I5, a turntable II 6, a lamp holder 13 and an early warning lamp 12, the turntable I5 is rotationally connected to the right side of the top surface of the shell 1, a turntable II 6 is rotationally connected to the top of the right side surface of the shell 1, lamp holders 13 are fixedly connected to the sides of the turntable II and the turntable I5 far from the shell 1, the early warning lamp 12 is arranged on the lamp holders 13, and the displacement sensor 4 is in signal connection with the circuit board 10 through a signal wire.

The early warning clock assembly comprises a warning clock 24, a fixed frame 25, a movable frame 26, incomplete gears 31, a connecting rod 27 and a beating head 29, wherein the fixed frame 25 is symmetrically and fixedly connected with the front inner side wall and the rear inner side wall of the shell 1, the movable frame 26 is arranged in the fixed frame 25, the top surface of the movable frame 26 is in sliding connection with the inner side wall of the fixed frame 25, the bottom surface of the movable frame 26 is in sliding connection with the inner wall of the shell 1, the connecting rod 27 is fixedly arranged on the outer walls of the left side and the right side of the movable frame 26, the beating head 29 is arranged at the other end of the connecting rod 27, through holes 28 for the beating head 29 to extend out are formed in the left side wall and the right side wall of the fixed frame 25, the left side and the right side of the fixed frame 25 are symmetrically arranged on the warning clock 24, the bottom of the warning clock 24 is fixedly connected with a base 23, the base 23 is fixedly connected with the inner side wall of the shell 1, the geometric center points of the warning clock 24, the through holes 28 and the beating head 29 are symmetrically and the inner side walls of the shell 1 are symmetrically and rotatably provided with incomplete gears 31, and the two incomplete gears 31 are located in the fixed frame 25 on the corresponding side.

The driving assembly comprises a motor 18, a first rotating rod 19, a second rotating rod 30, a third rotating rod 11, a first bevel gear 33, a second bevel gear 32, a third bevel gear 20, a fourth bevel gear 17, a fifth bevel gear and a sixth bevel gear 14, wherein the second rotating rod 30 is fixedly connected between two incomplete gears 31, the second bevel gear 32 is fixedly sleeved on the second rotating rod 30, the right end of the bottom wall in the shell 1 is provided with the motor 18, an output shaft of the motor 18 is connected with the first rotating rod 19, the other end of the first rotating rod 19 horizontally extends leftwards and is connected with the first bevel gear 33, the first bevel gear 33 is meshed with the second bevel gear 32, a plurality of bulges are respectively arranged on the upper surface and the lower surface opposite to each other on the inner side of the movable frame 26, and gear teeth are arranged on one quarter of the circumference on the outer side of the incomplete gears 31 and meshed with the bulges; the fixed cover is equipped with bevel gear three 20 on the bull stick one 19, the fixed plate 16 that is equipped with of casing 1 right side inner wall, the fixed plate 16 internal rotation is connected with bull stick three 11, bull stick three 11 runs through fixed plate 16 setting, bull stick three 11 top upwards runs through casing 1 roof and with carousel one 5 fixed connection, bull stick three 11 bottom fixedly connected with bevel gear four 17, bevel gear four 17 meshes with bevel gear three 20 mutually, fixed cover is equipped with bevel gear five on the bull stick three 11, carousel two 6 left surface fixedly connected with pivot 15, the pivot 15 other end stretches into casing 1 inside and is connected with bevel gear six 14, bevel gear six 14 meshes with bevel gear five mutually, through signal line signal connection between circuit board 10 and the motor 18, through signal line signal connection between circuit board 10 and the early warning lamp 12.

When the device is used, the height of a region to be detected is measured in real time through the displacement sensor 4, data is transmitted to the circuit board 10 through a signal wire (not shown in the figure), when the measured data exceeds a normal range value, the circuit board 10 is started through the signal wire control motor 18, the motor 18 drives the first rotating rod 19 to rotate, the first bevel gear 33 is driven to rotate, the second bevel gear 32 is driven to rotate, the second rotating rod 30 is driven to rotate, the incomplete gear 31 is driven to rotate, part of gear teeth on the incomplete gear 31 are meshed with protrusions on the inner side of the movable frame 26 to drive the movable frame 26 to reciprocate left and right, and then the two beating heads 29 reciprocate left and right, finally the beating heads 29 on the left side and the right side continuously strike the alarm clock 24 on one side respectively to make sounds, and relevant personnel nearby are reminded; meanwhile, the bevel gear III 20 rotates and drives the bevel gear IV 17 meshed with the bevel gear III to rotate, the rotating rod III 11 and the bevel gear V are driven to rotate together, the bevel gear V drives the bevel gear V14 meshed with the bevel gear V to rotate, the rotating shaft 15 is driven to rotate, the rotating shaft 15 drives the rotating disc II 6 to rotate, the rotating rod III 11 drives the rotating disc I5 to rotate, finally, the two warning lamps 12 are driven to rotate, and due to shielding of the lamp holder 13, illumination brightness on two sides of the lamp holder 13 is different, meanwhile, the lamp holder is matched with the lamp holder to rotate, obvious flickering lamp light is formed, nearby people are reminded more obviously, and the warning function is further improved.

Further, through holes are formed in the front side surface and the rear side surface of the shell 1, the number of the through holes is four, the positions of the alarms 24 respectively correspond to each other one by one, and a dust screen 7 is arranged at the through holes; the through hole and the dust screen 7 can prevent dust and radiate heat, and are also beneficial to improving the loudness of the sound generated by the impact of the alarm 24 and improving the early warning effect.

Furthermore, transparent covers are sleeved on the outer sides of the second turntable 6 and the first turntable 5, and the transparent covers are fixedly connected with the outer wall of the shell 1; the arrangement of the transparent cover plays a certain role in protecting the warning lamp 12.

Further, a support plate 34 is fixedly arranged on the inner bottom wall of the shell 1, and the first rotating rod 19 is arranged in a way of penetrating through the support plate 34 in a rotating way; the supporting plate 34 supports and fixes the first rotating rod 19, so that the stability of the device structure is improved.

Further, a bottom plate 9 is fixedly arranged at the bottom of the shell 1, moving wheels are arranged at four corners of the bottom plate 9, a vertical plate 2 is fixedly connected to the left side face of the bottom plate 9, a push handle is arranged at the top of the vertical plate 2, and a stabilizing plate 3 is fixedly connected between the vertical plate 2 and the shell 1; the stability of device structure can be improved to the design of firm board 3, and staff's accessible holds the push handle, and the cooperation removes the wheel and removes this device, conveniently detects the early warning to different regions business turn over in underground construction scene, has improved the suitability of this device greatly.

Further, a groove is formed in the bottom of the bottom plate 9, a plurality of hydraulic cylinders 22 are fixedly arranged in the groove, the extension ends of the hydraulic cylinders 22 are fixedly connected with limiting plates 21, the limiting plates 21 are in sliding connection with the inner side walls of the groove, and the size of the cross section of the limiting plates 21 in the horizontal direction is the same as that of the cross section of the groove in the horizontal direction; the staff makes limiting plate 21 descend and extend out of the groove by starting hydraulic cylinder 22, and finally jack up the device body along with the driving extension of hydraulic cylinder 22, so that the movable wheels are not contacted with the ground, and the device is prevented from moving when in use.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The automatic monitoring and early warning device for the high formwork underground engineering danger large engineering of the deep foundation pit comprises a shell (1); the method is characterized in that: the novel intelligent alarm device is characterized in that a displacement sensor (4) is fixedly arranged at the top of the shell (1), a circuit board (10) is arranged at the top of the shell (1), an alarm lamp component is arranged on the outer wall of the shell (1), an alarm clock component is arranged inside the shell (1), a driving component is arranged inside the shell (1), the alarm lamp component comprises a first rotary table (5), a second rotary table (6), a lamp holder (13) and an alarm lamp (12), the right side of the top surface of the shell (1) is rotationally connected with the first rotary table (5), the top of the right side of the shell (1) is rotationally connected with the second rotary table (6), the second rotary table (6) and the first rotary table (5) are fixedly connected with the lamp holder (13) away from the side of the shell (1), the alarm lamp holder (13) is provided with the alarm lamp (12), and the displacement sensor (4) is in signal connection with the circuit board (10) through a signal wire;

the early warning clock assembly comprises a warning clock (24), a fixed frame (25), a movable frame (26), incomplete gears (31), a connecting rod (27) and a beating head (29), wherein the front inner side wall and the rear inner side wall of a shell (1) are symmetrically and fixedly connected with the fixed frame (25), the movable frame (26) is arranged inside the fixed frame (25), the top surface of the movable frame (26) is in sliding connection with the inner side wall of the fixed frame (25), the bottom surface of the movable frame (26) is in sliding connection with the inner wall of the shell (1), the connecting rod (27) is fixedly arranged on the outer walls of the left side and the right side of the movable frame (26), the other end of the connecting rod (27) is provided with the beating head (29), through holes (28) for the beating head (29) to extend out are formed in the left side wall and the right side wall of the fixed frame (25), the left side and the right side of the fixed frame (25) are symmetrically arranged on the warning clock (24), the bottom of the warning clock (24) is fixedly connected with a base (23), the geometric center point of the base (23) is fixedly connected with the inner bottom wall of the shell (1), the warning clock (24), the through holes (28) and the beating head (29) are positioned on the same horizontal line, and the geometric center point of the inner side wall (1) is rotationally, and the two incomplete gears (31) are completely and correspond to the inner side of the alarm clock (31).

The driving assembly comprises a motor (18), a first rotating rod (19), a second rotating rod (30), a third rotating rod (11), a first bevel gear (33), a second bevel gear (32), a third bevel gear (20), a fourth bevel gear (17), a fifth bevel gear and a sixth bevel gear (14), wherein the second rotating rod (30) is fixedly connected between two incomplete gears (31), the second bevel gear (32) is fixedly sleeved on the second rotating rod (30), the right end of the inner bottom wall of the shell (1) is provided with the motor (18), an output shaft of the motor (18) is connected with the first rotating rod (19), the other end of the first rotating rod (19) horizontally extends leftwards and is connected with the first bevel gear (33), the first bevel gear (33) is meshed with the second bevel gear (32), a plurality of bulges are respectively arranged on the upper surface and the lower surface opposite to the inner side of the moving frame (26), and gear teeth are arranged on the fourth circumference of the outer side of the incomplete gears (31) and meshed with the bulges. The fixed cover is equipped with bevel gear three (20) on bull stick one (19), casing (1) right side inner wall is fixed be equipped with fixed plate (16), fixed plate (16) internal rotation is connected with bull stick three (11), bull stick three (11) run through fixed plate (16) setting, bull stick three (11) top upwards run through casing (1) roof and with carousel one (5) fixed connection, bull stick three (11) bottom fixedly connected with bevel gear four (17), bevel gear four (17) mesh with bevel gear three (20), fixed cover is equipped with bevel gear five on bull stick three (11), carousel two (6) left surface fixedly connected with pivot (15), the pivot (15) other end stretches into casing (1) inside and is connected with bevel gear six (14), bevel gear six (14) mesh with bevel gear five mutually, through signal line signal connection between circuit board (10) and motor (18), through signal line signal connection between circuit board (10) and the warning lamp (12).

2. The automatic monitoring and early warning device for the deep foundation pit high formwork underground engineering danger projects is characterized in that: the front side and the rear side of the shell (1) are respectively provided with four through holes, the positions of the alarms (24) are in one-to-one correspondence, and the through holes are provided with dustproof nets (7).

3. The automatic monitoring and early warning device for the deep foundation pit high formwork underground engineering danger projects is characterized in that: transparent covers are sleeved on the outer sides of the second turntable (6) and the first turntable (5), and the transparent covers are fixedly connected with the outer wall of the shell (1).

4. The automatic monitoring and early warning device for the deep foundation pit high formwork underground engineering danger projects is characterized in that: the inner bottom wall of the shell (1) is fixedly provided with a support plate (34), and the first rotating rod (19) is arranged in a rotating and penetrating mode through the support plate (34).

5. The automatic monitoring and early warning device for the deep foundation pit high formwork underground engineering danger projects is characterized in that: bottom plate (9) is fixed to be set up in casing (1) bottom, and four corners in bottom plate (9) bottom all are equipped with the removal wheel, and bottom plate (9) left surface fixedly connected with riser (2), riser (2) top are equipped with pushing handle, fixedly connected with firm board (3) between riser (2) and casing (1).

6. The automatic monitoring and early warning device for the deep foundation pit high formwork underground engineering danger projects is characterized in that: the bottom plate (9) bottom is provided with a groove, a plurality of hydraulic cylinders (22) are fixedly arranged in the groove, the extension ends of the hydraulic cylinders (22) are fixedly connected with limiting plates (21), and the limiting plates (21) are in sliding connection with the inner side walls of the groove.

7. The automatic monitoring and early warning device for the deep foundation pit high formwork underground engineering danger projects is characterized in that: the size of the cross section of the limiting plate (21) in the horizontal direction is the same as that of the cross section of the groove in the horizontal direction.