CN221345358U - Foundation pit safety device for construction - Google Patents

Abstract

The utility model discloses a foundation pit safety protection device for building construction, which comprises a fixed frame, wherein a positioning mechanism is arranged in the fixed frame, vertical rods are vertically arranged at four corners of the upper side of the fixed frame, a top plate is arranged between the vertical rods and above the fixed frame in a lifting manner, and a lifting mechanism for driving the top plate to act is arranged on the lower side of the top plate; the solar energy display device is characterized in that a transmission box is arranged in the middle of the upper side of the top plate, a fixing plate is arranged on the transmission box, a rotary driving mechanism used for driving the fixing plate to rotate is arranged in the transmission box, a warning mechanism and a lighting mechanism are arranged on the upper side of the fixing plate, a storage battery, a controller and a solar panel are further arranged on the upper side of the top plate, and the controller is electrically connected with the storage battery, the solar panel, the warning mechanism and the lighting mechanism. The foundation pit safety protection device for building construction can solve the problems that an existing foundation pit safety protection device for building construction is insufficient in stability and weak in night protection.

Description

Foundation pit safety device for construction

Technical Field

The utility model relates to the technical field of construction protection, in particular to a foundation pit safety protection device for building construction.

Background

With the development of the complexity and diversity of building construction, foundation pit safety protection is increasingly emphasized. However, the existing foundation pit safety protection device has certain defects, such as insufficient structural strength of a protection net, unobvious warning devices and the like, and cannot meet increasingly strict construction safety requirements.

The construction refers to the production activity of the construction implementation stage of the engineering construction, which is the construction process of various buildings, namely the process of changing various lines on a design drawing into real objects at a designated place, wherein the construction process comprises the steps of foundation engineering construction, main structure construction, roof engineering construction, decoration engineering construction and the like, the construction site is called a construction site or a construction site, the foundation pit is a soil pit excavated at a foundation design position according to the substrate elevation and the foundation plane size, the excavation scheme is determined according to geological hydrologic data before excavation and the condition of buildings nearby the site, and waterproof and drainage work is carried out.

But current foundation ditch safety device for construction is mostly simple rail structure, and simple placement is around the foundation ditch, and when personnel were not cared towards the rail, will cause the rail to remove, makes its inside that falls into the foundation ditch, has certain potential safety hazard to current foundation ditch safety device for construction is comparatively weak to the protection at night, only simple warning through the reflection of light strip, and night warning effect is relatively poor, is unfavorable for practical application.

Disclosure of utility model

The utility model provides a foundation pit safety protection device for building construction, which can solve the problems of insufficient stability and weak night protection of the existing foundation pit safety protection device for building construction.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the foundation pit safety protection device for building construction comprises a fixed frame, wherein a positioning mechanism is arranged in the fixed frame, vertical rods are vertically arranged at four corners of the upper side of the fixed frame, a top plate is arranged between the vertical rods and above the fixed frame in a lifting manner, and a lifting mechanism for driving the top plate to act is arranged on the lower side of the top plate; the middle part of the upper side of the top plate is provided with a transmission box, a fixed plate is arranged on the transmission box, a rotary driving mechanism for driving the fixed plate to rotate is arranged in the transmission box, a warning mechanism and a lighting mechanism are arranged on the upper side of the fixed plate, a storage battery, a controller and a solar panel are also arranged on the upper side of the top plate, and the controller is electrically connected with the storage battery, the solar panel, the warning mechanism and the lighting mechanism; the positioning mechanism comprises a sliding rod and a bidirectional screw rod, wherein the sliding rod and the bidirectional screw rod are arranged inside the fixed frame side by side, the two ends of the sliding rod are connected with the inner side wall of the fixed frame, one end of the bidirectional screw rod is connected with the inner side wall of the fixed frame, the other end of the bidirectional screw rod penetrates through the outer side wall of the fixed frame and is connected with a rotating disc, the outer side of the rotating disc is connected with a rotating handle, the bidirectional screw rod comprises two sections of threads with opposite rotation directions, each section of threads is respectively connected with a moving rod in a threaded mode, one end of the bidirectional screw rod is far away from the sliding rod, the lower side of each moving rod is vertically provided with a positioning rod which is in contact with the inner wall of a foundation pit, equipment is stable, equipment is positioned and fixed on the periphery of the foundation pit conveniently, stability of equipment placement is guaranteed, and potential safety hazards are further reduced.

Preferably, the lifting mechanism comprises lifting rods arranged between the front vertical rods and the rear vertical rods, the front side wall and the rear side wall of each vertical rod are respectively provided with a long-strip-shaped through groove in a penetrating mode, each lifting rod penetrates through two through grooves and is in sliding connection with the corresponding through grooves, two ends of each lifting rod are respectively provided with a limiting mechanism, the lower sides of the lifting rods are provided with a plurality of first fixing sleeves at intervals, second fixing rods are arranged in the first fixing sleeves, the tops of the second fixing rods are provided with first limiting plates, the first limiting plates are in sliding connection with the corresponding first fixing sleeves, connecting rods are transversely arranged between the opposite side walls of two ends of each lifting rod, and are connected with two sides of the top plate.

Preferably, the limiting mechanism comprises buffer grooves arranged at two ends of the lifting rod, a sliding block is slidably connected in the buffer grooves, threaded rods are connected at two ends of the lifting rod in a threaded mode, one end of each threaded rod extends into the corresponding buffer groove and is connected with the corresponding sliding block, the other end of each threaded rod is located at the side portion of the lifting rod and is connected with a pressing plate, and a poking plate is arranged at the side portion of the pressing plate and is convenient to operate.

Preferably, the lifting mechanism further comprises a plurality of second fixing sleeves arranged below the front end and the rear end of the top plate at intervals, a first fixing rod is arranged in each second fixing sleeve, a second limiting plate is arranged at the top of each first fixing rod, and the first fixing rods and the second limiting plates are in sliding connection with the corresponding second fixing sleeves, so that the lifting mechanism is simple in structure and convenient to lift.

Preferably, the rotary driving mechanism comprises a rotating rod vertically inserted in the transmission box, a servo motor is installed on one side of the rotating rod at the top of the transmission box, an output shaft of the servo motor extends to the inside of the transmission box and is connected with a driving gear, a driven gear meshed with the driving gear is arranged at the lower end of the rotating rod, and the upper end of the rotating rod is connected with the fixing plate.

Preferably, the warning mechanism comprises a third fixing rod vertically arranged on the upper side of the fixing plate, a mounting plate is arranged on the upper side of the third fixing rod, a warning lamp is arranged on the upper side of the mounting plate, a photosensitive sensor is arranged on the upper side of the mounting plate on one side of the warning lamp, and sunlight is detected conveniently and better through the photosensitive sensor.

Preferably, the lighting mechanism comprises a fixed block arranged on the upper side of the fixed plate, a transmission rod is rotationally connected to the side part of the fixed block, the bottom of the transmission rod is far away from one end of the fixed block and is provided with a lighting lamp, the top of the fixed block is provided with a fourth fixed rod, the fourth fixed rod is connected with the transmission rod through an obliquely arranged electric telescopic rod, the electric telescopic rod is controlled to work, the transmission rod is driven to rotate, the irradiation position of the lighting lamp is adjusted, and the lighting lamp is convenient to use.

Preferably, the outer side walls of the fixing frames are provided with first reflecting strips, and the outer side walls of the first fixing sleeve and the second fixing sleeve are provided with second reflecting strips, so that light source reflection can be conducted at night conveniently and better, and the visibility of equipment is improved.

Preferably, the lateral wall of lifter one end is provided with control panel, battery, solar panel, servo motor, light, electric telescopic handle, warning light, photosensitive sensor all with control panel electric connection, be convenient for better whole manual control to equipment through control panel.

Preferably, the solar panel is obliquely arranged, and mounting rods connected with the top plate are vertically arranged at four corners below the solar panel, so that the solar panel is simple in structure.

Compared with the prior art, the utility model has the beneficial effects that:

Simple structure, convenient operation through setting up positioning mechanism in the bottom of fixed frame, can fix equipment location around the foundation ditch to guarantee the stability that equipment was placed, further reduced the potential safety hazard, simultaneously through set up the warning light at the top of equipment, and cooperate photosensitive sensor to use, thereby make equipment can utilize the warning light to remind and warn the personnel of passing by around when night, and then improved the warning effect of equipment when night, be favorable to actual application. The foundation pit safety protection device for the building construction can solve the problems that an existing foundation pit safety protection device for the building construction is insufficient in stability and weak in night protection.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a side view of the present utility model;

FIG. 3 is a top view of the present utility model;

FIG. 4 is a perspective view of the positioning mechanism of the present utility model;

FIG. 5 is a schematic view of a spacing mechanism according to the present utility model;

FIG. 6 is a schematic view of a rotary drive mechanism according to the present utility model;

fig. 7 is a schematic view of an illumination mechanism according to the present utility model.

Reference numerals:

1. The warning device comprises a fixed frame, 2, a vertical rod, 3, a first fixed rod, 4, a second fixed rod, 5, a through groove, 6, a lifting rod, 7, a limiting mechanism, 71, a buffer groove, 72, a threaded rod, 73, a sliding block, 74, a pressing plate, 75, a toggle plate, 8, a positioning mechanism, 81, a sliding rod, 82, a bidirectional screw rod, 83, a moving rod, 84, a positioning rod, 85, a rotating disc, 86, a rotating handle, 9, a first fixed sleeve, 10, a first limiting plate, 11, a connecting rod, 12, a top plate, 13, a second fixed sleeve, 14, a second limiting plate, 15, a mounting rod, 16, a storage battery, 17, a solar panel, 18, a transmission box, 19, a controller, 20, a rotary driving mechanism, 201, a driven gear, 202, a servo motor, 203, a driving gear, 21, a rotating rod, 22, a fixed plate, 23, a third fixed rod, 24, a lighting mechanism, 241, a fixed block, 242, a transmission rod, 243, a lighting lamp, 244, a fourth fixed rod, 245, an electric rod, 25, a mounting plate, 26, a sensor, 28, a lifting mechanism, a light reflection mechanism, a light, a warning panel, a 40, a lifting mechanism, a warning panel, 50, a warning panel and a warning panel.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-7, the utility model provides the following technical scheme for solving the problems of insufficient stability and weak night protection of the existing foundation pit safety protection device for building construction: the foundation pit safety protection device for building construction comprises a fixed frame 1, wherein the fixed frame 1 is convenient for stably placing the whole equipment; the positioning mechanism 8 is arranged in the fixed frame 1, vertical rods 2 are vertically arranged at four corners of the upper side of the fixed frame 1, and four corners of the top of the equipment are conveniently and well supported through the vertical rods 2; a top plate 12 is arranged between the vertical rods 2 and above the fixed frame 1 in a lifting manner, and a lifting mechanism 40 for driving the top plate 12 to move is arranged on the lower side of the top plate 12; the middle part of the upper side of the top plate 12 is provided with a transmission box 18, a rotary driving mechanism 20 is arranged in the transmission box 18, a fixed plate 22 is arranged above the rotary driving mechanism 20, a warning mechanism 50 and a lighting mechanism 24 are arranged on the upper side of the fixed plate 22, storage batteries 16 are arranged on two sides of the transmission box 18, a solar panel 17 is arranged above the storage batteries 16, a controller 19 is also arranged on the upper side of the fixed plate 22, and the controller 19 is electrically connected with the storage batteries 16, the solar panel 17, the warning mechanism 50 and the lighting mechanism 24; the solar panel 17 absorbs solar energy and converts the solar energy into electric energy to be stored in the storage battery 16, and meanwhile, the storage battery 16 can be charged through external equipment, so that the equipment can be conveniently used in a time without sun for a long time; the positioning mechanism 8 is including setting up side by side fixed frame 1 inside slide bar 81 and two-way lead screw 82, the both ends of slide bar 81 all with the inside wall of fixed frame 1 links to each other, the one end of two-way lead screw 82 with the inside wall of fixed frame 1 links to each other, and its other end passes the lateral wall of fixed frame 1 just is connected with rolling disc 85, rolling disc 85's outside is connected with and rotates handle 86, be eccentric connection between rolling disc 85 and the rolling handle 86, two-way lead screw 82 includes two sections screw threads that revolve opposite directions, and threaded connection has two movable rods 83 respectively on each section screw thread, movable rod 83 keep away from the one end of two-way lead screw 82 with slide bar 81 sliding connection, the downside at movable rod 83 both ends is vertical be provided with the corresponding positioning rod 84 of contradicting of the inner wall of foundation ditch, be convenient for better fix equipment around the foundation ditch to guarantee the stability that equipment was placed, further reduced the security risk, in practical application, drive two movable rods 83 and move simultaneously under the limiting action of slide bar 81 to the inner wall 84 through the movable rod 84, thereby carry out the positioning rod 84.

In this embodiment, as shown in fig. 2, the lifting mechanism 40 includes a lifting rod 6 disposed between the front and rear vertical rods 2, the front and rear side walls of the vertical rods 2 are all penetrated and provided with elongated through grooves 5, the lifting rod 6 penetrates through the two through grooves 5 and is slidably connected with the through grooves 5, two ends of the lifting rod 6 are all provided with limiting mechanisms 7, a plurality of first fixing sleeves 9 are disposed at intervals on the lower side of the lifting rod 6, a second fixing rod 4 is disposed in the first fixing sleeve 9, a first limiting plate 10 is disposed on the top of the second fixing rod 4, the first limiting plate 10 is slidably connected with the corresponding first fixing sleeve 9, a connecting rod 11 is transversely disposed between the opposite side walls of two ends of the lifting rod 6, the connecting rod 11 is connected with two sides of the top plate 12, and the lifting mechanism is simple in structure, convenient to lift and convenient to operate.

In this embodiment, as shown in fig. 5, the limiting mechanism 7 includes a buffer groove 71 disposed at two ends of the lifting rod 6, a sliding block 73 is slidably connected in the buffer groove 71, two ends of the lifting rod 6 are all screwed with threaded rods 72, one end of each threaded rod 72 extends into the corresponding buffer groove 71 and is connected with the corresponding sliding block 73, the other end of each threaded rod 72 is located at a side portion of the lifting rod 6 and is connected with a pressing plate 74, and a toggle plate 75 is disposed at a side portion of the pressing plate 74, so that the operation is convenient.

In this embodiment, as shown in fig. 1, the lifting mechanism 40 further includes a plurality of second fixing sleeves 13 disposed at intervals below the front and rear ends of the top plate 12, a first fixing rod 3 is disposed in the second fixing sleeve 13, a second limiting plate 14 is disposed at the top of the first fixing rod 3, and the first fixing rod 3 and the second limiting plate 14 are slidably connected with the corresponding second fixing sleeves 13, so that the lifting mechanism is simple in structure and convenient to lift.

In this embodiment, as shown in fig. 6, the rotation driving mechanism 20 includes a rotation rod 21 vertically inserted into the transmission box 18, a servo motor 202 is installed on one side of the rotation rod 21 at the top of the transmission box 18, an output shaft of the servo motor 202 extends to the inside of the transmission box 18 and is connected with a driving gear 203, a driven gear 201 meshed with the driving gear 203 is disposed at the lower end of the rotation rod 21, a ratio of diameters of the driving gear 203 and the driven gear 201 is three, so that the illumination direction of the illumination lamp 243 can be adjusted more accurately, the upper end of the rotation rod 21 is connected with the fixed plate 22, the structure is simple, the servo motor 202 is controlled to work, the driving gear 203 is driven to rotate, so that the driven gear 201 and the rotation rod 21 are driven to rotate, and the illumination mechanism 24 and the warning mechanism 50 on the fixed plate 22 are driven better to rotate.

In this embodiment, as shown in fig. 1, the warning mechanism 50 includes a third fixing rod 23 vertically disposed on the upper side of the fixing plate 22, a mounting plate 25 is disposed on the upper side of the third fixing rod 23, a warning lamp 26 is disposed on the upper side of the mounting plate 25, a photosensitive sensor 27 is disposed on one side of the warning lamp 26 and is located on the upper side of the mounting plate 25, so that warning can be performed better at night through the warning lamp 26; better detection of sunlight is facilitated by the light sensitive sensor 27.

In this embodiment, as shown in fig. 7, the lighting mechanism 24 includes a fixing block 241 disposed on the upper side of the fixing plate 22, a driving rod 242 is rotatably connected to a side portion of the fixing block 241, an illumination lamp 243 is mounted at one end of the bottom of the driving rod 242 away from the fixing block 241, a fourth fixing rod 244 is disposed at the top of the fixing block 241, the fourth fixing rod 244 is connected with the driving rod 242 through an obliquely disposed electric telescopic rod 245, and the electric telescopic rod 245 is controlled to work to drive the driving rod 242 to rotate, so as to adjust the illumination position of the illumination lamp 243, thereby facilitating use thereof.

In this embodiment, as shown in fig. 4, the outer side walls of the fixing frame 1 are provided with first reflective strips 28, and the outer side walls of the first fixing sleeve 9 and the second fixing sleeve 13 are provided with second reflective strips 29, so that light source reflection is performed at night better, and visibility of the device is improved.

In this embodiment, as shown in fig. 1, the outer side wall of one end of the lifting rod 6 is provided with a control panel 30, the storage battery 16, the solar panel 2, the servo motor 202, the lighting lamp 243, the electric telescopic rod 245, the warning light 26 and the photosensitive sensor 27 are all electrically connected with the control panel 30, the control panel 30 is convenient for better manual control of the whole equipment, when the device falls at night, the controller 19 is controlled by the controller 19 through detecting the disappearance of sunlight through the photosensitive sensor 27 and transmitting a signal, the controller 19 controls the storage battery 16 to energize the warning light 26, meanwhile, the warning light 26 is controlled to work, a light prompt operation is performed, when the sun rises, the controller 19 is controlled by the photosensitive sensor 27 to detect the appearance of sunlight, and the controller 19 controls the warning light 26 to stop working.

In this embodiment, as shown in fig. 1, the solar panel 17 is obliquely disposed, and mounting rods 15 connected with the top plate 12 are vertically disposed at four corners below the solar panel 17, so that the structure is simple, and the solar panel 17 is conveniently and better mounted and fixed by the mounting rods 15.

In this embodiment, as shown in fig. 1, the fixing frame 1 is placed above the foundation pit, so that the positioning rod 84 extends into the foundation pit, then the rotating disc 85 is driven to rotate by the rotating handle 86, so as to drive the bidirectional screw rod 82 to rotate, the two moving rods 83 are driven to move towards two ends simultaneously under the limiting action of the sliding rod 81 by the rotation of the bidirectional screw rod 82, so as to drive the positioning rod 84 to move, the positioning rod 84 is in conflict with the inner wall of the foundation pit, so as to ensure the stability of equipment placement, after the placement is completed, the protective height can be adjusted by the limiting mechanism 7 and the lifting mechanism 40, the pressing plate 74 and the threaded rod 72 are driven to rotate by the stirring plate 75, the sliding block 73 is driven to move in the buffer groove 71 by the rotation of the threaded rod 72, and meanwhile the pressing plate 74 is not in conflict with the outer side of the vertical rod 2, then the height position of the vertical rod 2 can be adjusted, the second fixing rod 4 stretches and contracts in the first fixing sleeve 9, the first fixing rod 3 stretches and contracts in the second fixing sleeve 13, after the adjustment is finished, the threaded rod 72 is screwed down, the pressing plate 74 is abutted against the outer side of the vertical rod 2, the height position of the vertical rod 2 can be fixed again, meanwhile, when sunlight appears, solar energy is absorbed through the solar panel 17 and converted into electric energy to be stored in the storage battery 16, meanwhile, the storage battery 16 can be charged through external equipment, the equipment is conveniently used in long-term no-sun time, when the night falls temporarily, the disappearance of sunlight is detected through the photosensitive sensor 27, a signal is transmitted to the controller 19, the controller 19 controls the storage battery 16 to energize the warning lamp 26, meanwhile, the warning lamp 26 is controlled to work, when the sun rises, sunlight is detected to appear through the photosensitive sensor 27, a signal is transmitted to the controller 19, the controller 19 controls the warning lamp 26 to stop working, and when construction operation is carried out on surrounding sites at night, the electric telescopic rod 245 is controlled to work through the control panel 30, the transmission rod 242 is driven to rotate, so that the irradiation position of the illumination lamp 243 is adjusted, meanwhile, the servo motor 202 is controlled to work through the control panel 30, the driving gear 203 is driven to rotate, the driven gear 201 and the rotating rod 21 are driven to rotate, the illumination lamp 243 is driven to rotate, the direction of the illumination lamp 243 is adjusted, and illumination operation is facilitated.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims (10)

1. The utility model provides a foundation ditch safety device for construction which characterized in that includes:

The fixing frame (1), be provided with positioning mechanism (8) in fixed frame (1), the four corners department of fixed frame (1) upside all is provided with vertical pole (2) vertically, be located between vertical pole (2) fixed frame (1) top liftable be provided with roof (12), the downside of roof (12) is provided with elevating system (40) that drive its action;

The solar energy display device is characterized in that a transmission box (18) is arranged in the middle of the upper side of the top plate (12), a fixed plate (22) is arranged on the transmission box (18), a rotary driving mechanism (20) for driving the fixed plate (22) to rotate is arranged in the transmission box (18), a warning mechanism (50) and a lighting mechanism (24) are arranged on the upper side of the fixed plate (22), a storage battery (16), a controller (19) and a solar panel (17) are further arranged on the upper side of the top plate (12), and the controller (19) is electrically connected with the storage battery (16), the solar panel (17), the warning mechanism (50) and the lighting mechanism (24);

Positioning mechanism (8) are including setting up side by side fixed frame (1) inside slide bar (81) and two-way lead screw (82), the both ends of slide bar (81) all with the inside wall of fixed frame (1) links to each other, the one end of two-way lead screw (82) with the inside wall of fixed frame (1) links to each other, and its other end passes the lateral wall of fixed frame (1) just is connected with rolling disc (85), the outside of rolling disc (85) is connected with rotation handle (86), two-way lead screw (82) include two sections screw threads that revolve opposite to, and threaded connection has a movable rod (83) respectively on each section screw thread, movable rod (83) keep away from the one end of two-way lead screw (82) with slide bar (81) sliding connection, the downside at movable rod (83) both ends is vertical be provided with the locating lever (84) that contradicts with the inner wall of foundation ditch.

2. The foundation pit safety device for building construction according to claim 1, wherein: lifting mechanism (40) are including setting up around two lifter (6) between vertical pole (2), rectangular logical groove (5) have all been run through to the front and back lateral wall of vertical pole (2), lifter (6) run through two logical groove (5) and rather than sliding connection, the both ends of lifter (6) all are provided with stop gear (7), the downside interval of lifter (6) is provided with a plurality of first fixed sleeve (9), be provided with second dead lever (4) in first fixed sleeve (9), the top of second dead lever (4) is provided with first limiting plate (10), first limiting plate (10) with second dead lever (4) and corresponding first fixed sleeve (9) sliding connection, transversely be provided with connecting rod (11) between the opposite side wall at lifter (6) both ends, connecting rod (11) with the both sides of roof (12) link to each other.

3. The foundation pit safety device for building construction according to claim 2, wherein: stop gear (7) are including setting up buffer tank (71) at lifter (6) both ends, sliding connection has slider (73) in buffer tank (71), equal threaded connection in both ends of lifter (6) has threaded rod (72), in one end of threaded rod (72) extends to corresponding buffer tank (71) and with slider (73) link to each other, the other end of threaded rod (72) is located the lateral part of lifter (6) is connected with pinch-off strip (74), the lateral part of pinch-off strip (74) is provided with toggle plate (75).

4. The foundation pit safety device for building construction according to claim 2, wherein: the lifting mechanism (40) further comprises a plurality of second fixing sleeves (13) which are arranged below the front end and the rear end of the top plate (12) at intervals, a first fixing rod (3) is arranged in each second fixing sleeve (13), a second limiting plate (14) is arranged at the top of each first fixing rod (3), and the first fixing rods (3) and the second limiting plates (14) are in sliding connection with the corresponding second fixing sleeves (13).

5. The foundation pit safety device for building construction according to claim 2, wherein: the outer side wall of one end of the lifting rod (6) is provided with a control panel (30).

6. The foundation pit safety device for building construction according to claim 1, wherein: the rotary driving mechanism (20) comprises a rotating rod (21) vertically inserted into the transmission box (18), a servo motor (202) is installed on one side of the rotating rod (21) at the top of the transmission box (18), an output shaft of the servo motor (202) extends to the inside of the transmission box (18) and is connected with a driving gear (203), a driven gear (201) meshed with the driving gear (203) is arranged at the lower end of the rotating rod (21), and the upper end of the rotating rod (21) is connected with the fixed plate (22).

7. The foundation pit safety device for building construction according to claim 1, wherein: the warning mechanism (50) comprises a third fixing rod (23) vertically arranged on the upper side of the fixing plate (22), a mounting plate (25) is arranged on the upper side of the third fixing rod (23), a warning lamp (26) is arranged on the upper side of the mounting plate (25), and a photosensitive sensor (27) is arranged on the upper side of the mounting plate (25) on one side of the warning lamp (26).

8. The foundation pit safety device for building construction according to claim 1, wherein: the lighting mechanism (24) comprises a fixed block (241) arranged on the upper side of the fixed plate (22), a transmission rod (242) is connected to the side portion of the fixed block (241), an illuminating lamp (243) is arranged at one end, far away from the fixed block (241), of the bottom of the transmission rod (242), a fourth fixed rod (244) is arranged at the top of the fixed block (241), and the fourth fixed rod (244) is connected with the transmission rod (242) through an obliquely arranged electric telescopic rod (245).

9. The foundation pit safety device for building construction according to claim 4, wherein: the outer side walls of the fixing frame (1) are respectively provided with a first reflecting strip (28), and the outer side walls of the first fixing sleeve (9) and the second fixing sleeve (13) are respectively provided with a second reflecting strip (29).

10. The foundation pit safety device for building construction according to claim 1, wherein: the solar panel (17) is obliquely arranged, and mounting rods (15) connected with the top plate (12) are vertically arranged at four corners below the solar panel (17).