A construction engineering management safety warning device

Abstract

The application discloses a kind of construction engineering management safety warning device, specifically related to safety warning device technical field, including base, the base inner cavity and base lower end are commonly provided with fixed structure, the base upper end is fixedly connected with adjusting structure, the adjusting structure upper end is fixedly connected with lifting structure, the lifting structure upper end is fixedly connected with unfolding structure, the unfolding structure left end and right end are symmetrically distributed with warning structure, the unfolding structure upper end is provided with photoelectric warning device.The safety warning device for construction engineering management of the application, by adjusting structure cooperation fixed structure, the equipment is fastened to the ground, while fixing the equipment, the warning structure is completely unfolded by lifting structure driving unfolding structure, one-key unfolding, fast arrangement can be realized;Synchronously, in weather such as rain, fog and snow, the photoelectric warning device can play a flashing warning role on passing personnel and vehicles, and reduce the occurrence of corresponding safety accidents.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety warning devices, in particular to a safety warning device for construction engineering management. BACKGROUND

[0002] Safety warning devices are graphic signs used to remind people to pay attention to the surrounding environment to avoid possible dangers. In order to protect the safety of workers and the public, safety warning signs play a crucial role in construction sites. Correct use and arrangement of safety warning devices can avoid most safety accidents.

[0003] Chinese patent document CN215210678U discloses a safety warning device for construction engineering, which comprises a base, a support plate, a warning light, a rotating assembly and a knocking assembly. The base is provided with an electric telescopic rod, the support plate is hingedly arranged on the output end of the electric telescopic rod, the rotating assembly is arranged on the support plate, the warning light is arranged on the rotating assembly, and the knocking assembly is arranged on the support plate and connected with the rotating assembly. The warning device provided in the above document drives the sleeve to rotate, drives the rotating cylinder to rotate horizontally, drives gear two to roll on the gear ring, drives gear one and gear three to rotate, thereby driving the warning light to rotate in the horizontal direction and the vertical direction, achieving visual warning effect. By driving the ratchet and pawl to rotate, the knocking ball knocks the bell to produce sound, achieving auditory warning effect. The adjustment of the electric telescopic rod keeps the warning light in a horizontal state.

[0004] However, in actual use, the device is large in size, inconvenient to move and carry, occupies a large space during carrying, and has many steps for storage and storage, which is difficult for single person to operate, and has poor convenience. Moreover, when arranging the warning device, many processes are required and additional tools are needed for assistance, which is low in operability. SUMMARY

[0005] The main purpose of the present application is to provide a safety warning device for construction engineering management, which can effectively solve the problems of many arrangement processes, inconvenience in carrying, large space occupation and inconvenience in use of the existing warning device.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] A safety warning device for construction engineering management, comprising a base, a fixing structure arranged in the inner cavity of the base and at the lower end of the base, an adjusting structure fixedly connected to the upper end of the base, a lifting structure fixedly connected to the upper end of the adjusting structure, a unfolding structure fixedly connected to the upper end of the lifting structure, a warning structure symmetrically arranged at the left end and the right end of the unfolding structure, and a photoelectric warning device arranged at the upper end of the unfolding structure.

[0008] Preferably, the fixing structure comprises a fixing rod in sliding connection with the inner surface of the base, the outer surface of the fixing rod is symmetrically provided with a sliding groove one in front and back, the inner surface of the two sliding groove ones is in sliding connection with a limiting block fixedly connected with the lower part of the inner cavity of the base, the lower end of the base is fixedly connected with a plurality of auxiliary legs distributed in a ring shape, and the lower end of the fixing rod is fixedly connected with a conical head.

[0009] Preferably, the adjusting structure comprises an adjusting box, the lower end of the adjusting box is fixedly connected with a plurality of supporting rods distributed in a rectangular shape and fixedly connected with the upper end of the base, the front end of the adjusting box is rotatably connected with a hand crank, the rear end of the hand crank is fixedly connected with a worm rotatably connected with the inner cavity of the adjusting box, the outer surface of the worm is meshed with a worm wheel, the inner surface of the worm wheel is fixedly connected with a bidirectional threaded rod, the lower end of the bidirectional threaded rod extends to the inner cavity of the base through the bottom wall of the inner surface of the adjusting box and is in threaded connection with the inner surface of the fixing rod, and the upper end of the bidirectional threaded rod extends to the inner cavity of the lifting structure through the top wall of the inner surface of the adjusting box.

[0010] Preferably, the lifting structure comprises a fixing cylinder, the lower end of the fixing cylinder is fixedly connected with the upper end of the adjusting box, the inner surface of the fixing cylinder is in sliding connection with a piston rod, the inner surface of the piston rod is in threaded connection with the upper part of the outer surface of the bidirectional threaded rod, the upper end of the fixing cylinder is fixedly connected with an unfolding structure, the upper part of the outer surface of the fixing cylinder is fixedly connected with a hinged seat in left and right symmetry, and the inner surface of the hinged seat is rotatably connected with a warning structure.

[0011] Preferably, the unfolding structure comprises an outer shell, the lower end of the outer shell is fixedly connected with the upper end of the fixing cylinder, the inner surface of the piston rod is fixedly connected with a spring telescopic rod, the inner surface of the outer shell is rotatably connected with a pulley one in left and right symmetry, the inner surface of the outer shell is rotatably connected with an L-shaped rod in left and right symmetry, the upper end of the vertical part of each of the two L-shaped rods is fixedly connected with a pulley two, the two pulley twos and the two pulley ones are commonly provided with a steel cable, the head and tail of the steel cable are fixedly connected with the upper end of the spring telescopic rod, and the upper end of the outer shell is fixedly connected with the lower end of the photoelectric warning device.

[0012] Preferably, one end of the steel cable is fixedly connected with the upper end of the spring telescopic rod on the left part, the other end passes around the upper part of the outer surface of the left spring telescopic rod, passes through the lower part of the outer surface of the left pulley two, passes out to the upper part of the outer surface of the right pulley two via the upper part of the outer surface of the left pulley two, passes out via the lower part of the outer surface of the right pulley two, passes around the upper part of the outer surface of the right L-shaped rod downward, and is fixedly connected with the upper end of the spring telescopic rod on the right part.

[0013] Preferably, the warning structure comprises a support arm, a sliding groove two is formed in the upper end of the support arm, the inner surface of the sliding groove two is in sliding connection with the outer surface of the horizontal part of the L-shaped rod on the same side, the inner surface of the support arm is fixedly connected with a warning sign assembly, a straight rod is fixedly connected to the end of the warning sign assembly away from the support arm, and the upper end of the straight rod is in rotational connection with the hinge seat.

[0014] Preferably, the warning sign assembly comprises a fixed shaft, the fixed shaft is fixedly connected with the inner surface of the sliding groove two, a clock spring is fixedly connected to the outer surface of the fixed shaft, a winding drum is fixedly connected to the end of the clock spring away from the fixed shaft, the outer surface of the winding drum is woundly connected with a base cloth, a plurality of reflective strips are fixedly connected in linear distribution on the outer surface of the base cloth, and the end of the base cloth away from the winding drum is fixedly connected with the straight rod on the same side.

[0015] Preferably, the photoelectric warning device comprises a warning light, the lower end of the warning light is fixedly connected with the upper end of the shell, a wind cup seat is rotatably connected to the lower part of the outer surface of the warning light, and a solar light shield is fixedly connected to the upper end of the wind cup seat through the grid-shaped support column.

[0016] Preferably, the two limiting blocks are right trapezoids, and the inclined surface parts thereof face downward and are located on the side away from the fixed rod.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The present application can realize one-key unfolding and rapid arrangement by adjusting the structure to drive the fixing structure to go deep downward, fastening the equipment on the ground, simultaneously fixing the equipment by the fixing structure, first driving the unfolding structure to unfold the warning structure to both sides by the action of the lifting structure, then lifting the unfolding structure and the warning structure by the lifting structure to completely unfold the warning structure.

[0019] The present application can realize one-key unfolding and rapid arrangement by adjusting the structure to drive the fixing structure to go deep downward, fasten the equipment on the ground, simultaneously fixing the equipment by the fixing structure, first driving the unfolding structure to unfold the warning structure to both sides by the action of the lifting structure, then lifting the unfolding structure and the warning structure by the lifting structure to completely unfold the warning structure.

[0020] The present application can realize one-key unfolding and rapid arrangement by adjusting the structure to drive the fixing structure to go deep downward, fasten the equipment on the ground, simultaneously fixing the equipment by the fixing structure, first driving the unfolding structure to unfold the warning structure to both sides by the action of the lifting structure, then lifting the unfolding structure and the warning structure by the lifting structure to completely unfold the warning structure.

[0021] The application gradually unfolds the base cloth during the process of the support arm rising in the unfolded structure, so that the reflective strip in the base cloth is unfolded synchronously, and the reflective warning effect is provided; meanwhile, when the lifting structure drives the warning structure to descend, the base cloth is wound into the inner cavity of the support arm synchronously by the cooperation of the fixing shaft, the clockwork spring and the winding drum, the automatic storage is realized, and the work flow and labor intensity of the related warning sign laying personnel are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of the application;

[0023] Figure 2 It is the overall structure bottom view schematic diagram of the application;

[0024] Figure 3 It is the overall internal structure section schematic diagram of the application;

[0025] Figure 4 It is the fixed structure section schematic diagram of the application;

[0026] Figure 5 It is the unfolded state fixed structure internal structure section schematic diagram of the application;

[0027] Figure 6 It is the lifting structure internal structure section schematic diagram of the application;

[0028] Figure 7 It is the unfolded structure internal structure section schematic diagram of the application;

[0029] Figure 8 It is the unfolded state unfolded structure internal structure section schematic diagram of the application;

[0030] Figure 9 It is the warning structure internal structure section schematic diagram of the application;

[0031] Figure 10 It is the structure schematic diagram of the warning sign assembly of the application;

[0032] Figure 11 It is the unfolded state schematic diagram of the application.

[0033] In the figure: 1, base; 11, limit block; 2, fixed structure; 21, auxiliary leg; 22, fixed rod; 23, sliding groove one; 24, conical head; 3, adjusting structure; 31, adjusting box; 32, hand crank; 33, support rod; 34, worm; 35, two-way threaded rod; 36, worm; 4, lifting structure; 41, fixed cylinder; 42, piston rod; 43, hinged seat; 5, warning structure; 51, straight rod; 52, support arm; 53, warning sign assembly; 531, base cloth; 532, reflective strip; 533, clock spring; 534, fixed shaft; 535, winding drum; 54, sliding groove two; 6, unfolding structure; 61, shell; 62, pulley one; 63, L-shaped rod; 64, steel cable; 65, spring telescopic rod; 66, pulley two; 7, photoelectric warning device; 71, solar light shield; 72, warning light; 73, wind cup seat. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments. Embodiment one

[0035] As shown in Figure 1 , a construction engineering management safety warning device, comprising a base 1, the inner cavity of the base 1 and the lower end of the base 1 are provided with a fixed structure 2, the upper end of the base 1 is fixedly connected with an adjusting structure 3, the upper end of the adjusting structure 3 is fixedly connected with a lifting structure 4, the upper end of the lifting structure 4 is fixedly connected with an unfolding structure 6, the left end and the right end of the unfolding structure 6 are symmetrically provided with a warning structure 5, and the upper end of the unfolding structure 6 is provided with a photoelectric warning device 7.

[0036] During the operation of the present embodiment, first of all, the device needs to be placed on the ground, the fixed structure 2 is inserted into the ground to make the base 1 tightly adhere to the ground surface, then the fixed structure 2 is driven downward by the adjusting structure 3 to make the device tightly fastened to the ground, at the same time, the adjusting structure 3 will first drive the unfolding structure 6 to unfold the warning structure 5 to both sides through the action of the lifting structure 4, then the unfolding structure 6 and the warning structure 5 are lifted by the lifting structure 4 to completely unfold the warning structure 5, which can realize one-key unfolding and rapid arrangement; at the same time, in rainy, foggy and snowy weather, the photoelectric warning device 7 can play a flashing warning role on passing personnel and vehicles, thereby reducing the occurrence of corresponding safety accidents.

[0037] Specifically, in order to realize the flashing warning function, referring to Figure 2 , the photoelectric warning device 7 comprises a warning light 72, the lower end of the warning light 72 is fixedly connected with the upper end of the shell 61, the outer surface of the warning light 72 is rotatably connected with a wind cup seat 73, and the upper end of the wind cup seat 73 is fixedly connected with a solar light shield 71 through a grid-shaped support column.

[0038] The solar shading cover 71 provides energy for the warning light 72. The solar shading cover 71 is a photovoltaic device commonly used in the market that can store electricity. During use, the wind cup holder 73 is driven by airflow to rotate the solar shading cover 71. Since there are grid-like support columns between the solar shading cover 71 and the wind cup holder 73, they will alternately block the warning light of the warning light 72 during rotation, thereby achieving a flashing effect. In some foggy and snowy weather, traditional warning methods have a good warning effect. Moreover, the human eye is more sensitive to flashing and moving signals than conventional signals, which can achieve a better warning effect and reduce the occurrence of dangerous accidents. Example 2

[0039] Based on Embodiment 1, this embodiment uses the cooperation of the auxiliary leg 21 and the fixing rod 22 in the fixing structure 2 to fix the entire device in the predetermined warning area. At the same time, the cooperation of the adjusting structure 3 and the fixing structure 2 can drive the fixing rod 22 deeper into the ground, strengthening the fixing effect and increasing the stability of the device. Moreover, compared with traditional warning devices, this invention does not require additional tools or equipment for auxiliary placement, thus improving convenience.

[0040] Specifically, to achieve device fixation, refer to... Figure 2 and Figure 3 The fixed structure 2 includes a fixed rod 22 that is slidably connected to the inner surface of the base 1. The outer surface of the fixed rod 22 is symmetrically provided with sliding grooves 23. The inner surfaces of the two sliding grooves 23 are slidably connected with limiting blocks 11 that are fixedly connected to the lower part of the inner cavity of the base 1. Several auxiliary legs 21 are fixedly connected to the lower end of the base 1 in a ring. A conical head 24 is fixedly connected to the lower end of the fixed rod 22.

[0041] During use, please refer to Figure 3 The device can be inserted into the ground first by using the auxiliary leg 21, so that the lower end of the base 1 is in close contact with the ground. At this time, the device is initially fixed to the ground under the action of the auxiliary leg 21, and the conical head 24 is inserted into the ground surface under the action of the auxiliary leg 21.

[0042] Furthermore, to drive the fixing rod 22 downwards to achieve a fixing effect, refer to... Figure 2 and Figure 3, the adjusting structure 3 comprises an adjusting box 31, a plurality of support rods 33 are fixedly connected to the upper end of the base 1 at the lower end of the adjusting box 31 in a rectangular distribution, a hand crank 32 is rotatably connected to the front end of the adjusting box 31, the rear end of the hand crank 32 is fixedly connected to a worm 36 which is rotatably connected to the inner cavity of the adjusting box 31, the outer surface of the left part of the worm 36 is engaged with a worm gear 34, the inner surface of the worm gear 34 is fixedly connected to a bidirectional threaded rod 35, the lower end of the bidirectional threaded rod 35 extends to the inner cavity of the base 1 through the bottom wall of the inner surface of the adjusting box 31 and is screwedly connected to the inner surface of the fixed rod 22, and the upper end of the bidirectional threaded rod 35 extends to the inner cavity of the lifting structure 4 through the top wall of the inner surface of the adjusting box 31.

[0043] Referring to Figure 3 , Figure 4 and Figure 5 , the operator steps on the upper end of the base 1 and then shakes the hand crank 32 to drive the worm 36 to rotate, so that the worm gear 34 drives the bidirectional threaded rod 35 to rotate, and the fixed rod 22 screwedly connected to the bidirectional threaded rod 35 drives the conical head 24 to penetrate into the soil layer under the action of the bidirectional threaded rod 35, and when the predetermined depth is reached, the device can be fixed at the predetermined position by the fixed rod 22 because the power transmission of the worm 36 and the worm gear 34 is unidirectional and has a self-locking characteristic.

[0044] Further, in order to avoid the influence of the soil in the sliding groove 1 on the storage process when the fixed rod 22 is stored, referring to Figure 4 , the two limiting blocks 11 are in the shape of a right trapezoid, and the inclined surface thereof faces downward and is located away from the fixed rod 22.

[0045] After the fixed rod 22 penetrates into the soil layer, the sliding groove 1 between the fixed rod 22 and the base 1 will be contaminated by some soil particles, which will have a certain influence on the storage process. The inclined surface of the limiting block 11 can clean the soil particles in the sliding groove 1 when the device is stored, so as to avoid the influence of the soil particles on the storage of the device. Example Three

[0046] On the basis of example two, the lifting structure 4 and the unfolding structure 6 are arranged to automatically horizontally unfold the warning structure 5 during the arrangement process and automatically make the warning structure 5 adhere to the two sides of the fixed cylinder 41 in the storage state, so that the device is arranged more quickly and conveniently, the portability of the device is improved, and the space occupied in the carrying process is reduced.

[0047] Specifically, in order to enable the unfolding structure 6 to be lifted synchronously when the fixed structure 2 penetrates into the soil layer, referring to Figure 3 and Figure 6The lifting structure 4 comprises a fixed cylinder 41, the lower end of which is fixedly connected with the upper end of the adjusting box 31, the inner surface of the fixed cylinder 41 is slidably connected with a piston rod 42, the inner surface of the piston rod 42 is threadedly connected with the outer surface of the upper portion of the bidirectional threaded rod 35, the upper end of the fixed cylinder 41 is fixedly connected with the unfolding structure 6, the outer surface of the upper portion of the fixed cylinder 41 is fixedly connected with a left and right symmetrical hinged seat 43, and the inner surface of the hinged seat 43 is rotationally connected with the warning structure 5.

[0048] When the hand crank 32 is rotated to make the fixed rod 22 deeply penetrate into the stratum, the bidirectional threaded rod 35 will synchronously drive the piston rod 42 to slide and ascend in the fixed cylinder 41, thereby driving the unfolding structure 6 fixedly connected with the piston rod 42 to synchronously ascend.

[0049] Further, in order to synchronously drive the warning structure 5 to horizontally unfold when the lifting structure 4 ascends, refer to Figure 3 , Figure 6 and Figure 7 The unfolding structure 6 comprises an outer shell 61, the lower end of which is fixedly connected with the upper end of the fixed cylinder 41, the inner surface of the piston rod 42 is fixedly connected with a spring telescopic rod 65, the inner surface of the outer shell 61 is rotationally connected with a left and right symmetrical pulley one 62, the inner surface of the outer shell 61 is rotationally connected with a left and right symmetrical L-shaped rod 63, the upper end of the vertical portion of each of the two L-shaped rods 63 is fixedly connected with a pulley two 66, the two pulley twos 66 and the two pulley ones 62 are jointly provided with a steel cable 64, the head and tail ends of the steel cable 64 are fixedly connected with the upper end of the spring telescopic rod 65, and the upper end of the outer shell 61 is fixedly connected with the lower end of the photoelectric warning device 7.

[0050] Further, in order to realize the unfolding effect, the winding path of the steel cable 64 is as follows, refer to Figure 7 and Figure 8 One end of the steel cable 64 is fixedly connected with the upper end of the left portion of the spring telescopic rod 65, the other end passes over the outer surface of the upper portion of the left spring telescopic rod 65, penetrates through the outer surface of the lower portion of the left pulley two 66, passes out from the outer surface of the upper portion of the left pulley two 66 to the outer surface of the upper portion of the right pulley two 66, penetrates out from the outer surface of the lower portion of the right pulley two 66, passes over the outer surface of the upper portion of the right L-shaped rod 63, and is fixedly connected with the upper end of the right portion of the spring telescopic rod 65.

[0051] In the storage state, refer to Figure 3 and Figure 7 At this time, the spring telescopic rod 65 is in the initial state, no force is applied to the steel cable 64, the L-shaped rod 63 is reset under the gravity of the warning structure 5, and the warning structure 5 is in the vertical state;

[0052] In the unfolding state, refer to Figure 8When the piston rod 42 drives the pulley one 62 to rise, the relative distance between the bidirectional threaded rod 35 and the unfolding structure 6 changes, which will first pull the pulley two 66 on both sides through the steel cable 64 to drive the L-shaped rod 63 to rotate inward, so as to pull the warning structure 5 from the vertical state to the horizontal state, and then the piston rod 42 continues to drive the shell 61 to rise, at this time, the L-shaped rod 63 remains relatively fixed due to the limiting effect of the shell 61 on the L-shaped rod 63, and the steel cable 64 pulls the spring telescopic rod 65 to gradually rise, and the spring telescopic rod 65 and the steel cable 64 keep the warning structure 5 in the horizontal state. Embodiment Four

[0053] This embodiment is based on embodiment three, and through the cooperation of the hinged seat 43 and the straight rod 51, the ground cloth 531 is gradually unfolded during the rising of the support arm 52 along with the unfolding structure 6, so that the reflective strip 532 therein is unfolded synchronously with the ground cloth 531, providing a reflective warning effect; at the same time, by the cooperation of the fixed shaft 534, the clockwork spring 533 and the winding drum 535, when the lifting structure 4 drives the warning structure 5 to descend, the ground cloth 531 is simultaneously wound into the inner cavity of the support arm 52, realizing automatic storage and reducing the working process and labor intensity of the related warning sign laying personnel.

[0054] Specifically, to realize the function of rising synchronously with the unfolding structure 6 during the rising process, referring to Figure 7 and Figure 9 , the warning structure 5 includes the support arm 52, the support arm 52 is provided with the sliding groove two 54 at the upper end, the inner surface of the sliding groove two 54 is slidingly connected with the outer surface of the horizontal part of the L-shaped rod 63 on the same side, the inner surface of the support arm 52 is fixedly connected with the warning sign assembly 53, the end of the warning sign assembly 53 away from the support arm 52 is fixedly connected with the straight rod 51, and the upper end of the straight rod 51 is rotationally connected with the hinged seat 43.

[0055] When the shell 61 drives the support arm 52 to rise, the straight rod 51 is rotationally connected with the hinged seat 43, and during the unfolding process, the straight rod 51 is unfolded horizontally due to the limiting effect of the hinged seat 43, but since the hinged seat 43 is fixed with the fixed cylinder 41, when the piston rod 42 drives the shell 61 and the support arm 52 to rise, the straight rod 51 does not rise synchronously.

[0056] Further, to realize the function of unfolding the ground cloth 531 during the rising of the warning structure 5, referring to Figure 9 and Figure 10, the warning sign assembly 53 includes a fixed shaft 534, the fixed shaft 534 is fixedly connected with the inner surface of the sliding groove two 54, the outer surface of the fixed shaft 534 is fixedly connected with a clockwork spring 533, the one end of the clockwork spring 533 away from the fixed shaft 534 is fixedly connected with a winding drum 535, the outer surface of the winding drum 535 is woundly connected with a base cloth 531, the outer surface of the base cloth 531 is linearly fixedly connected with a plurality of reflective strips 532, and the one end of the base cloth 531 away from the winding drum 535 is fixedly connected with the straight rod 51 on the same side.

[0057] With reference to Figure 11 During the rising process of the support arm 52, the straight rod 51 will pull the base cloth 531 to make it unfold, when the straight rod 51 rises to the highest point, the base cloth 531 is completely unfolded under the action of the straight rod 51, at this time, the fixed shaft 534 stores elastic potential energy;

[0058] During the storage process, when the shell 61 drives the support arm 52 to descend, it will keep horizontal descent under the action of the spring telescopic rod 65, at this time, the elastic potential energy stored in the fixed shaft 534 is released, drives the base cloth 531 to be wound on the outer surface of the winding drum 535, until the support arm 52 is in contact with the straight rod 51, at this time, under the action of gravity, the support arm 52 will drive the L-shaped rod 63 to reset, and at the same time, the straight rod 51 is also reset.

[0059] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A safety warning device for construction project management, comprising a base (1), characterized in that: The inner cavity of the base (1) and the lower end of the base (1) are provided with a fixing structure (2). The upper end of the base (1) is fixedly connected to an adjustment structure (3). The upper end of the adjustment structure (3) is fixedly connected to a lifting structure (4). The upper end of the lifting structure (4) is fixedly connected to an unfolding structure (6). The left and right ends of the unfolding structure (6) are symmetrically provided with warning structures (5). The upper end of the unfolding structure (6) is provided with a photoelectric warning device (7). The fixing structure (2) includes a fixing rod (22) that is slidably connected to the inner surface of the base (1). The outer surface of the fixing rod (22) is symmetrically provided with a sliding groove (23). The inner surfaces of the two sliding grooves (23) are slidably connected with a limiting block (11) that is fixedly connected to the lower part of the inner cavity of the base (1). Several auxiliary legs (21) are fixedly connected in a ring at the lower end of the base (1). A conical head (24) is fixedly connected at the lower end of the fixing rod (22). The adjustment structure (3) includes an adjustment box (31). The lower end of the adjustment box (31) is fixedly connected with several support rods (33) that are fixedly connected to the upper end of the base (1). The front end of the adjustment box (31) is rotatably connected with a hand crank (32). The rear end of the hand crank (32) is fixedly connected with a worm gear (36) that is rotatably connected to the inner cavity of the adjustment box (31). The left side of the outer surface of the worm gear (36) is meshed with a worm wheel (34). The inner surface of the worm wheel (34) is fixedly connected with a bidirectional threaded rod (35). The lower end of the bidirectional threaded rod (35) penetrates the bottom wall of the inner surface of the adjustment box (31) and extends to the inner cavity of the base (1) and is threadedly connected to the inner surface of the fixed rod (22). The upper end of the bidirectional threaded rod (35) penetrates the top wall of the inner surface of the adjustment box (31) and extends to the inner cavity of the lifting structure (4). The lifting structure (4) includes a fixed cylinder (41), the lower end of which is fixedly connected to the upper end of the adjusting box (31), a piston rod (42) is slidably connected to the inner surface of the fixed cylinder (41), the inner surface of the piston rod (42) is threadedly connected to the upper part of the outer surface of the bidirectional threaded rod (35), an unfolding structure (6) is fixedly connected to the upper end of the fixed cylinder (41), and hinge seats (43) are symmetrically fixedly connected to the upper part of the outer surface of the fixed cylinder (41). The inner surface of the hinge seat (43) is rotatably connected to the warning structure (5). The unfolding structure (6) includes an outer shell (61), the lower end of which is fixedly connected to the upper end of the fixed cylinder (41), a spring telescopic rod (65) is fixedly connected to the inner surface of the piston rod (42), a pulley (62) is symmetrically connected to the inner surface of the outer shell (61), an L-shaped rod (63) is symmetrically connected to the inner surface of the outer shell (61), a pulley (66) is fixedly connected to the upper end of the vertical part of the two L-shaped rods (63), a steel cable (64) is provided together with the two pulleys (66) and the two pulleys (62), the two ends of the steel cable (64) are fixedly connected to the upper end of the spring telescopic rod (65), and the upper end of the outer shell (61) is fixedly connected to the lower end of the photoelectric warning device (7). The warning structure (5) includes a support arm (52), the upper end of which is provided with a second sliding groove (54). The inner surface of the second sliding groove (54) is slidably connected to the outer surface of the horizontal part of the L-shaped rod (63) on the same side. A warning sign assembly (53) is fixedly connected to the inner surface of the support arm (52). A straight rod (51) is fixedly connected to the end of the warning sign assembly (53) away from the support arm (52). The upper end of the straight rod (51) is rotatably connected to the hinge seat (43). The warning sign assembly (53) includes a fixed shaft (534), which is fixedly connected to the inner surface of the slide groove (54). A spring (533) is fixedly connected to the outer surface of the fixed shaft (534). A winding drum (535) is fixedly connected to the end of the spring (533) away from the fixed shaft (534). A base cloth (531) is wound around the outer surface of the winding drum (535). Several reflective strips (532) are linearly distributed and fixedly connected to the outer surface of the base cloth (531). The end of the base cloth (531) away from the winding drum (535) is fixedly connected to a straight rod (51) on the same side. The photoelectric warning device (7) includes a warning light (72), the lower end of which is fixedly connected to the upper end of the outer shell (61), and a wind cup holder (73) is rotatably connected to the lower part of the outer surface of the warning light (72). A solar shading cover (71) is fixedly connected to the upper end of the wind cup holder (73) through a grid-shaped support column.

2. The safety warning device for construction project management according to claim 1, characterized in that: Specifically, one end of the steel cable (64) is fixedly connected to the upper left part of the spring telescopic rod (65), and the other end passes around the upper part of the outer surface of the left spring telescopic rod (65), passes through the lower part of the outer surface of the left pulley two (66), passes through the upper part of the outer surface of the left pulley two (66), reaches the upper part of the outer surface of the right pulley two (66), passes through the lower part of the outer surface of the right pulley two (66), passes around the upper part of the outer surface of the right L-shaped rod (63), and is fixedly connected to the upper right part of the spring telescopic rod (65).

3. The safety warning device for construction project management according to claim 1, characterized in that: The two limiting blocks (11) are right-angled trapezoids with their inclined surfaces facing downwards and located on the side away from the fixing rod (22).

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