CN111197424A

CN111197424A - Safety warning rail for building

Info

Publication number: CN111197424A
Application number: CN202010141176.4A
Authority: CN
Inventors: 田军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2020-05-26
Anticipated expiration: 2040-03-04
Also published as: CN111197424B

Abstract

The invention provides a safety warning fence for buildings, which comprises a concrete base, wherein two connecting bases are arranged on the upper portion of the concrete base in a bilaterally symmetrical distribution mode, and the upper end faces of the two connecting bases are connected with a fence main body in a sliding mode. According to the invention, through the matching of the limiting mechanism and the connecting base, when the fence main body is installed, the T-shaped sliding blocks at the bottoms of the two bases on the fence main body slide into the sliding rails on the connecting base, in the sliding process, the limiting plates rotate downwards into the rectangular grooves of the connecting base under the pressure action of the T-shaped sliding blocks, then when the rear end surfaces of the T-shaped sliding blocks are tightly attached to the front side surfaces of the T-shaped buffer rubber pads in the sliding rails, the limiting plates lose the pressure action, and then bounce quickly under the action of the torsion springs, so that the T-shaped sliding blocks are limited in the sliding rails, and have better stability, and in the installation process, bolts and nuts are not needed for fixing, thereby saving time and labor, and greatly improving the convenience in installation of the fence main body.

Description

Safety warning rail for building

Technical Field

The invention belongs to the technical field of warning fences, and particularly relates to a safety warning fence for a building.

Background

The fence is a guardrail. The guardrail refers to industrial guardrail. The guardrail is mainly used for protecting and protecting personal safety and equipment facilities in occasions such as houses, roads, commercial districts, public places and the like. The guard rail is visible everywhere in our lives. The safety fence is mainly used for limiting and preventing activities in specific ranges such as electric power places, building construction places and the like, so that the aims of eliminating and lightening potential safety hazards are fulfilled.

For example, application No.: the invention discloses a multifunctional building fence for civil engineering, which comprises a supporting column and a fence frame, wherein a supporting plate is arranged at the top end of the supporting column, a sealing frame is arranged on the top surface of the supporting plate, a storage battery is arranged inside the sealing frame, a camera is arranged on one side of the sealing frame and fixed on the supporting plate, a support and a lighting lamp are arranged on the top surface of the sealing frame, a solar collecting plate is arranged at the top end of the support, a photovoltaic assembly is arranged between the solar collecting plate and the support, the solar collecting plate is connected with the photovoltaic assembly, the photovoltaic assembly is connected with the storage battery, the storage battery is respectively connected with the camera and the lighting lamp, a fixing column is arranged at the bottom end of the supporting column, a plurality of connecting buckles are equally arranged on the supporting column from top end to bottom end. The beneficial effects are that: the strength is high, and is multi-functional, and dust proof sound insulation protects building site property safety, saves the electric energy.

Based on the above patent search, and in combination with the prior art device discovery, a certain number of building fences are typically installed on the construction ground during the building construction process in order to warn the passing pedestrians or vehicles. The existing building fence has the following defects in the actual use process, such as: 1. when the existing building fence is installed, a large number of nuts need to be screwed down to install a base of the building fence on a prefabricated concrete base, so that the installation is very labor-consuming, the installation efficiency is low, and the convenience in the installation of the building fence is greatly reduced; 2. present building rail generally constitutes through many railings for the advertising map can not be pasted in front of the building rail, and then usable space value has been reduced, and if adopt baffle formula rail, meeting strong wind weather, under the influence of strong wind environment, make baffle formula rail blown down by wind very easily, and the reflection of light of warning subsides on the current building rail, in long-time use, just can adhere to debris such as a large amount of dust, and then reduced the warning effect that the reflection of light of warning subsides.

Disclosure of Invention

In order to solve the technical problems, the invention provides a safety warning fence for a building, which aims to solve the following defects existing in the actual use process of the existing building fence, such as: 1. when the existing building fence is installed, a large number of nuts need to be screwed down to install a base of the building fence on a prefabricated concrete base, so that the installation is very labor-consuming, the installation efficiency is low, and the convenience in the installation of the building fence is greatly reduced; 2. present building rail generally constitutes through many railings for the advertising map can not be pasted in front of the building rail, and then usable space value has been reduced, and if adopt baffle formula rail, meeting strong wind weather, under the influence of strong wind environment, make baffle formula rail blown down by wind very easily, and the reflection of light of warning subsides on the current building rail, in long-time use, just can adhere to debris such as a large amount of dust, and then reduced the problem of the warning effect of warning reflection of light subsides.

The invention relates to a purpose and an effect of a safety warning fence for a building, which are achieved by the following specific technical means:

a safety warning fence for buildings comprises a concrete base, wherein two connecting bases are symmetrically distributed on the upper portion of the concrete base, the upper end faces of the two connecting bases are connected with a fence main body in a sliding mode, the fence main body further comprises a base, warning boards, rails, rotating plates, arch limiting blocks, rectangular limiting plates and T-shaped sliding blocks, the bases are arranged on the bottom end faces of two longitudinal pillars on the fence main body, the warning boards are fixedly connected to the lower portion of the front end face of the fence main body, the two T-shaped sliding blocks are arranged on the bottom end faces of the two bases, a warning reflecting sticker is pasted on the front end face of the warning board, three cross rods are welded between the two longitudinal pillars of the fence main body, five rails are arranged between the two opposite faces of the upper portion in a rectangular array mode, a rotating plate is rotatably connected to the outer portion of each rail, and two arch limiting blocks are fixedly connected, each arched limiting block is connected with the steel wire rope in a sliding mode, and a rectangular limiting plate is arranged on the rear end face of the longitudinal strut on the left side of the fence body; the lower part of the fence main body is connected with a cleaning mechanism in a sliding manner, and the upper part of the right end face of the fence main body is provided with a pulley mechanism; the upper part of the fence main body is provided with a synchronous driving mechanism, and the right end of the synchronous driving mechanism is connected with the cleaning mechanism through a steel wire rope; every connect inside all rotation of base to be connected with a stop gear, stop gear still includes the limiting plate, presses briquetting, oval type stopper and torsion spring, the quantity of limiting plate is two, and presses briquetting, every through a pivot fixedly connected with between two limiting plates all install a torsion spring between limiting plate and the pivot, the oval type stopper rotates through the pivot to be connected and is located the front side position between two slide rails at connecting the base up end, and oval type stopper up end rear side is equipped with the rotation handle, two limiting plate bottom face all parallels with according to briquetting bottom face, and according to briquetting up end rear side division and is equipped with the rectangle spacing groove.

Furthermore, the connecting base also comprises slide rails, T-shaped buffer rubber pads, fixing rods and limiting discs, the upper end surface of the connecting base is provided with two slide rails in a bilateral symmetry manner, a T-shaped chute is formed in the upper end surface of each slide rail, the rear side surface of the interior of each slide rail is pasted with the T-shaped buffer rubber pad, the four corners of the bottom end surface of the connecting base are respectively provided with one fixing rod, the peripheral surface of each fixing rod is provided with two limiting discs, the upper end surface of the connecting base is positioned on the front side of the interior of the slide rail and is provided with three rectangular grooves, the three rectangular grooves are rotatably connected with a limiting mechanism through a rotating shaft, and four reinforcing ribs are arranged between the upper end surface of each limiting disc and the peripheral surface of each fixing rod in an;

further, when the fence main body and the connecting base are in an installation state, the T-shaped sliding block is connected with the T-shaped sliding groove on the sliding rail in a sliding mode, and round corners are arranged at through holes in the upper end face and the lower end face of each arched limiting block;

furthermore, the cleaning mechanism also comprises a brush, limiting slide rods and springs, the brush is arranged on the rear side surface inside the cleaning mechanism, the left end and the right end of the cleaning mechanism are connected with the limiting slide rods which are fixed on the longitudinal support columns of the fence main body through support blocks in a sliding mode, the springs are arranged outside the limiting slide rods, the left end and the right end of the cleaning mechanism are distributed in a backward ninety-degree bending mode, and the length of the brush is consistent with that of the warning board;

furthermore, the pulley mechanism also comprises a first pulley and a second pulley, the first pulley and the second pulley are both arranged on the upper part of the right longitudinal strut of the fence main body through a support block, the first pulley is positioned on the front side of the second pulley, the first pulley and the second pulley sliding chute are both connected with a steel wire rope in a sliding manner, the axis of the first pulley and the axis of the second pulley are vertically distributed in a ninety-degree manner, and two reinforcing ribs are arranged on the top end surface of the upper support block of the first pulley;

furthermore, the synchronous driving mechanism also comprises driving blocks, the bottom end face of the synchronous driving mechanism is rotatably connected with five driving blocks through a rotating shaft, the five driving blocks are respectively and fixedly connected to one side of the upper end faces of the five arched limiting blocks, the five driving blocks are distributed at the bottom of the synchronous driving mechanism in a rectangular array shape, and each driving block is in a Y-shaped shape;

further, when the bottom end face of the circular waist limiting block is in contact with the bottom end face of the inner side of the rectangular limiting groove on the pressing block, the upper end faces of the two limiting plates are located on the same horizontal plane with the upper end face of the connecting base, and the upper edge angle and the lower edge angle of the rear end face of each limiting plate are respectively arranged to be a forty-five-degree chamfer.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, through the matching of the limiting mechanism and the connecting base, when the fence main body is installed, the T-shaped sliding blocks at the bottoms of the two bases on the fence main body slide into the sliding rails on the connecting base, in the sliding process, the limiting plates rotate downwards into the rectangular grooves of the connecting base under the pressure action of the T-shaped sliding blocks, then when the rear end surfaces of the T-shaped sliding blocks are tightly attached to the front side surfaces of the T-shaped buffer rubber pads in the sliding rails, the limiting plates lose the pressure action, and then bounce quickly under the action of the torsion springs, so that the T-shaped sliding blocks are limited in the sliding rails, and have better stability, and in the installation process, bolts and nuts are not needed for fixing, thereby saving time and labor, and greatly improving the convenience in installation of the fence main body.

According to the invention, through the matching of the synchronous driving mechanism and the cleaning mechanism, the five rotating plates are driven by strong wind to rotate at ninety degrees anticlockwise, the synchronous driving mechanism moves to the left side for a certain distance, then the cleaning mechanism is driven by the steel wire rope to move upwards in a straight line on the front side of the warning board, and through the hairbrush, sundries such as a large amount of dust and the like attached to the warning reflecting sticker adhered to the front end surface of the warning board are cleaned.

Drawings

Fig. 1 is a first view structure diagram of the present invention.

Fig. 2 is a schematic diagram of a second viewing angle structure according to the present invention.

Fig. 3 is a schematic view of the present invention at a part enlarged in fig. 2.

Fig. 4 is a schematic structural view of the connecting base and the limiting mechanism of the invention.

Fig. 5 is a schematic cross-sectional view of the connection base of the present invention.

Fig. 6 is a schematic structural diagram of the limiting mechanism of the present invention.

Fig. 7 is a schematic structural diagram of the fence main body of the invention.

Fig. 8 is a schematic view of the cleaning mechanism of the present invention.

Fig. 9 is a schematic view of the structure of the fence body of the present invention in a state that the rotating plate is rotated.

Fig. 10 is a schematic view of the present invention at a part B in fig. 1.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a concrete base; 2. connecting a base; 201. a slide rail; 202. a T-shaped buffer rubber cushion; 203. fixing the rod; 204. a limiting disc; 3. a fence body; 301. a base; 302. a warning board; 303. a railing; 304. rotating the plate; 305. an arched limiting block; 306. a rectangular limiting plate; 307. a T-shaped slider; 4. a cleaning mechanism; 401. a brush; 402. a limiting slide bar; 403. a spring; 5. a pulley mechanism; 501. a first pulley; 502. a second pulley; 6. a synchronous drive mechanism; 601. driving the block; 7. a wire rope; 8. a limiting mechanism; 801. a limiting plate; 802. a pressing block; 803. a waist-round limiting block; 804. a torsion spring.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 10:

the invention provides a safety warning fence for buildings, which comprises: the concrete base 1, the upper portion of the concrete base 1 is provided with two connecting bases 2 which are distributed in a bilateral symmetry manner, the connecting bases 2 further comprise slide rails 201, T-shaped buffer rubber pads 202, fixing rods 203 and limiting disks 204, the upper end face of each connecting base 2 is provided with two slide rails 201 in a bilateral symmetry manner, the upper end face of each slide rail 201 is provided with a T-shaped chute, the rear side face of the interior of each slide rail 201 is adhered with the T-shaped buffer rubber pad 202, four included angles of the bottom end face of each connecting base 2 are provided with one fixing rod 203, the outer peripheral face of each fixing rod 203 is provided with two limiting disks 204, the upper end face of each connecting base 2 is provided with three rectangular grooves at the front side of the interior of the slide rail 201, the three rectangular grooves are connected with a limiting mechanism 8 through a rotating shaft in a rotating manner, and four reinforcing ribs are arranged between the upper end face of each, through the arrangement of the fixing rod 203 and the limiting disc 204, the connecting base 2 is more stable on the concrete base 1; the upper end surfaces of the two connecting bases 2 are connected with a fence body 3 in a sliding way, the fence body 3 also comprises a base 301, warning boards 302, railings 303, rotating plates 304, arch limiting blocks 305, rectangular limiting plates 306 and T-shaped sliding blocks 307, the bottom end surfaces of the two longitudinal pillars on the fence body 3 are both provided with the base 301, the lower part of the front end surface of the fence body 3 is fixedly connected with the warning boards 302, the bottom end surfaces of the two bases 301 are both provided with the two T-shaped sliding blocks 307, the front end surface of the warning boards 302 is pasted with warning reflecting stickers, three transverse rods are welded between the two longitudinal pillars of the fence body 3, five railings 303 are arranged between the opposite surfaces of the two transverse rods at the upper part in a rectangular array way, the outer part of each railing 303 is rotatably connected with one rotating plate 304, the right end surface of the fence body 3, a rectangular limiting plate 306 is arranged on the rear end face of the left longitudinal strut on the fence main body 3; the lower part of the fence main body 3 is connected with a cleaning mechanism 4 in a sliding manner, the cleaning mechanism 4 further comprises a brush 401, a limiting slide bar 402 and a spring 403, the brush 401 is arranged on the rear side surface inside the cleaning mechanism 4, the left end and the right end of the cleaning mechanism 4 are connected with the limiting slide bar 402 fixed on a longitudinal support of the fence main body 3 through a support block in a sliding manner, the spring 403 is arranged outside each limiting slide bar 402, the left end and the right end of the cleaning mechanism 4 are distributed in a backward ninety-degree bent manner, the length of the brush 401 is consistent with that of the warning board 302, and a large amount of dust and other impurities attached to the surface of the warning light reflecting sticker adhered to the warning board 302 are cleaned through the up-; a pulley mechanism 5 is arranged on the upper part of the right end face of the fence main body 3; the upper part of the fence main body 3 is provided with a synchronous driving mechanism 6, the synchronous driving mechanism 6 also comprises driving blocks 601, the bottom end face of the synchronous driving mechanism 6 is rotatably connected with five driving blocks 601 through a rotating shaft, the five driving blocks 601 are respectively and fixedly connected to one side of the upper end faces of the five arched limiting blocks 305, the five driving blocks 601 are distributed at the bottom of the synchronous driving mechanism 6 in a rectangular array shape, and each driving block 601 is in a Y-shaped shape; the right end of the synchronous driving mechanism 6 is connected with the cleaning mechanism 4 through a steel wire rope 7; each connecting base 2 is connected with a limiting mechanism 8 in a rotating way, the limiting mechanism 8 further comprises two limiting plates 801, a pressing block 802, a waist-round limiting block 803 and a torsion spring 804, the pressing block 802 is fixedly connected between the two limiting plates 801 through a rotating shaft, the torsion spring 804 is arranged between each limiting plate 801 and the rotating shaft, the waist-round limiting block 803 is connected to the upper end surface of the connecting base 2 through the rotating shaft and is positioned at the front side part between the two sliding rails 201, a rotating handle is arranged on the rear side of the upper end surface of the waist-round limiting block 803, the bottom end surfaces of the two limiting plates 801 are parallel to the bottom end surface of the pressing block 802, a rectangular limiting groove is arranged on the rear side of the upper end surface of the pressing block 802, when the bottom end surface of the waist-round limiting block 803 is contacted with the bottom end surface of the inner side of the rectangular limiting groove on the pressing block 802, the upper end surfaces of the two, the upper and lower edges of the rear end faces of the two limit plates 801 are chamfered at forty-five degrees.

When the fence body 3 and the connection base 2 are in an installation state, the T-shaped sliding block 307 is connected with the T-shaped sliding groove on the sliding rail 201 in a sliding manner, and round corners are arranged at through holes in the upper end face and the lower end face of each arched limiting block 305, so that abrasion to the steel wire rope 7 is reduced, and the service life of the steel wire rope 7 is prolonged.

Wherein, pulley mechanism 5 still includes first pulley 501 and second pulley 502, first pulley 501 and second pulley 502 all install on rail main part 3 right side longitudinal support upper portion through a piece, and first pulley 501 is located second pulley 502 front side, first pulley 501 and second pulley 502 spout all slide with wire rope 7 and be connected, first pulley 501 axis is ninety degrees vertical form with second pulley 502 axis and distributes, cooperation through first pulley 501 and second pulley 502, make wire rope 7 can change the direction of the power in a flexible way, and it is more laborsaving, first pulley 501 upper support top end face is equipped with two strengthening ribs.

When in use: when the fence body 3 is installed, the T-shaped sliding blocks 307 at the bottoms of the two bases 301 on the fence body 3 slide into the sliding rails 201 on the connecting base 2, in the sliding process, the limiting plate 801 rotates downwards into the rectangular grooves of the connecting base 2 under the pressure action of the T-shaped sliding blocks 307, then when the rear end face of the T-shaped sliding block 307 is tightly attached to the front side face of the T-shaped buffer rubber mat 202 in the sliding rail 201, the limiting plate 801 loses the pressure action at the moment, and then the T-shaped sliding block 307 is quickly bounced under the action of the torsion spring 804, so that the T-shaped sliding block 307 is limited in the sliding rails 201 and has better stability, and in the installation process, bolts and nuts are not needed for fixing, so that time and labor are saved, and the convenience in installation of the fence body 3 is greatly improved;

after installation, the advertisement poster is adhered to the front end face of the rotating plate 304 through an adhesive, the available space value of the fence main body 3 is improved, and when the weather is strong wind, strong wind blows the front side or the rear side of the fence main body 3, then through the arrangement of the rectangular limiting plate 306 and under the synchronous action of the synchronous driving mechanism 6, the five rotating plates 304 can only rotate anticlockwise for ninety degrees simultaneously under the action of wind power, so that the strong wind passes through gaps among the five rotating plates 304 after rotation, the impact force of the wind power on the fence main body 3 is reduced, and the phenomenon that the fence main body 3 is blown down by the strong wind is effectively avoided;

five rotating plates 304 blow to under the ninety degree state of anticlockwise rotation by strong wind, make synchronous drive mechanism 6 move a certain distance to the left side, then drive clearance mechanism 4 through wire rope 7 and carry out upwards rectilinear movement in warning sign 302 front side, and through brush 401, make the warning reflection of light subsides that warning sign 302 front end face was pasted go up attached debris such as a large amount of dust and obtain the clearance, after a gust of strong wind blows, clearance mechanism 4 rebounds to the normal position downwards under the effect of spring 403, in the return in-process, make the warning reflection of light subsides that warning sign 302 front end face was pasted obtain secondary cleaning effect, blow through gust, make the warning reflection of light subsides obtain the clearance, the warning effect of warning reflection of light subsides has effectively been improved.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a safety warning rail for building which characterized in that: the concrete fence comprises a concrete base (1), wherein two connecting bases (2) which are bilaterally symmetrically distributed are arranged on the upper portion of the concrete base (1), a fence main body (3) is connected to the upper end face of the two connecting bases (2) in a sliding manner, the fence main body (3) further comprises a base (301), a warning board (302), a railing (303), a rotating plate block (304), an arch limiting block (305), a rectangular limiting plate (306) and T-shaped sliding blocks (307), the bases (301) are arranged on the bottom end faces of two longitudinal supports on the fence main body (3), the warning board (302) is fixedly connected to the lower portion of the front end face of the fence main body (3), the two bottom end faces of the base (301) are respectively provided with the two T-shaped sliding blocks (307), a warning reflecting paste is pasted on the front end face of the warning board (302), and three cross rods are welded, five railings (303) are arranged between opposite surfaces of two cross rods on the upper portion in a rectangular array, a rotating plate (304) is rotatably connected to the outer portion of each railing (303), two arched limiting blocks (305) are fixedly connected to the right end face of the fence main body (3), each arched limiting block (305) is connected with a steel wire rope (7) in a sliding mode, and a rectangular limiting plate (306) is arranged on the rear end face of a longitudinal strut on the left side of the fence main body (3); the lower part of the fence main body (3) is connected with a cleaning mechanism (4) in a sliding manner, and the upper part of the right end face of the fence main body (3) is provided with a pulley mechanism (5); the upper part of the fence main body (3) is provided with a synchronous driving mechanism (6), and the right end of the synchronous driving mechanism (6) is connected with the cleaning mechanism (4) through a steel wire rope (7); a limiting mechanism (8) is rotatably connected inside each connecting base (2), the limiting mechanism (8) further comprises two limiting plates (801), two pressing blocks (802), two waist-round limiting blocks (803) and two torsion springs (804), a pressing block (802) is fixedly connected between the two limit plates (801) through a rotating shaft, a torsion spring (804) is arranged between each limit plate (801) and the rotating shaft, the waist-round limiting block (803) is rotationally connected with the upper end surface of the connecting base (2) at the front side part between the two slide rails (201) through a rotating shaft, and the rear side of the upper end face of the waist-round limiting block (803) is provided with a rotating handle, the bottom end faces of the two limiting plates (801) are all parallel to the bottom end face of the pressing block (802), and the rear side of the upper end face of the pressing block (802) is provided with a rectangular limiting groove.

2. A safety warning fence for construction as claimed in claim 1, wherein: the connecting base (2) also comprises a slide rail (201), a T-shaped buffer rubber pad (202), a fixed rod (203) and a limiting disc (204), the upper end surface of the connecting base (2) is provided with two slide rails (201) which are bilaterally symmetrical, a T-shaped sliding groove is arranged on the upper end surface of each sliding rail (201), a T-shaped buffer rubber pad (202) is adhered on the rear side surface inside each sliding rail (201), four corners of the bottom end surface of the connecting base (2) are respectively provided with a fixed rod (203), and the peripheral surface of each fixed rod (203) is provided with two limiting discs (204), the upper end surface of the connecting base (2) is provided with three rectangular grooves at the front side inside the sliding rail (201), and the three rectangular grooves are connected with a limiting mechanism (8) through a rotating shaft in a rotating mode, and four reinforcing ribs are arranged between the upper end face of each limiting disc (204) and the outer peripheral face of each fixing rod (203) in an annular array mode.

3. A safety warning fence for construction as claimed in claim 1, wherein: when the fence body (3) and the connecting base (2) are in an installation state, the T-shaped sliding block (307) is connected with the T-shaped sliding groove in the sliding rail (201) in a sliding mode, and round corners are arranged at through holes in the upper end face and the lower end face of each arched limiting block (305).

4. A safety warning fence for construction as claimed in claim 1, wherein: clearance mechanism (4) still include brush (401), spacing slide bar (402) and spring (403), the inside trailing flank of clearance mechanism (4) is equipped with brush (401), and clearance mechanism (4) are controlled the equal sliding connection in both ends and are fixed spacing slide bar (402) on rail main part (3) longitudinal support through a piece, every spacing slide bar (402) outside all installs spring (403), clearance mechanism (4) are controlled both ends and all are ninety degrees backward and bend the form and distribute, brush (401) length is unanimous with warning sign (302) length.

5. A safety warning fence for construction as claimed in claim 1, wherein: pulley mechanism (5) still include first pulley (501) and second pulley (502), first pulley (501) and second pulley (502) are all installed on rail main part (3) right side longitudinal support upper portion through a piece, and first pulley (501) are located second pulley (502) front side, first pulley (501) and second pulley (502) spout all are connected with wire rope (7) slip, first pulley (501) axis is ninety degrees vertical form distribution with second pulley (502) axis, piece top end face is equipped with two strengthening ribs on first pulley (501).

6. A safety warning fence for construction as claimed in claim 1, wherein: synchronous actuating mechanism (6) still include drive piece (601), synchronous actuating mechanism (6) bottom face rotates through the pivot and is connected with five drive piece (601), and five drive piece (601) fixed connection respectively are in five arch stopper (305) up end one side, five drive piece (601) are the rectangular array form in synchronous actuating mechanism (6) bottom and distribute, and every drives its shape of piece (601) and all sets up to the Y style of calligraphy.

7. A safety warning fence for construction as claimed in claim 1, wherein: when the bottom end face of the circular waist limiting block (803) is in contact with the bottom end face of the inner side of the rectangular limiting groove on the pressing block (802), the upper end faces of the two limiting plates (801) are all located on the same horizontal plane with the upper end face of the connecting base (2), and the upper edge angle and the lower edge angle of the rear end face of each limiting plate (801) are respectively set to be a forty-five-degree chamfer.