CN106499202A - Box-type for safety management in construction site portable faces frontier defense guardrail - Google Patents

Abstract

The convenient frontier defense guardrail that faces of box-type for safety management in construction site disclosed by the invention has two kinds of structures：(1) face frontier defense fence unit by least one to constitute；Face the connection of frontier defense fence unit to multiple, then multiple frontier defense fence units that face are sequentially connected by column；Each faces the flexible screen component composition that frontier defense fence unit is connected by casing and with casing；The mode that flexible screen component can be carried above is launched, and also can be shunk in the way of pushing and is accommodated in casing；(2) face frontier defense fence unit by least one to constitute；To face the connection of frontier defense fence unit by multiple, then multiple frontier defense fence units that face are sequentially connected；Each faces the flexible screen component composition that frontier defense fence unit is connected by casing and with casing；The mode that flexible screen component can be carried above is launched, and also can be shunk in the way of pushing and is accommodated in casing.The box-type of the present invention is convenient to face frontier defense guardrail, is easily installed, dismantles, can easily be applied to job site, to ensure safety.

Description

Box-type portable edge protection fence for construction site safety management

technical field

The invention belongs to the technical field of protective devices for building construction, and relates to a protective fence, in particular to a box-type portable border protective fence for safety management on a construction site.

Background technique

As we all know, the field of construction engineering is a high-risk industry, and various safety accidents occur from time to time; those shocking scenes remind people all the time that safe production is the guarantee of happiness. In many accidents (such as: electric shock, mechanical injury, object strike, collapse, high-altitude fall and other accidents), the incidence of high-altitude fall accidents accounts for about 40% to 50%. It can be seen that high-altitude fall is the most important cause of safety accidents. one of the reasons.

During the construction process, every construction worker is faced with the safety problem of "four ports and five borders". The so-called "four entrances" refer to stair entrances, elevator entrances, reserved openings and passage entrances; the "five borders" refer to the periphery of balconies, the periphery of floors, the periphery of roofs, the sides of runways and ramps, and the sides of unloading platforms ; These edge openings are all sources of danger for high-altitude fall accidents.

With the rapid development of the country's market economy and the acceleration of urbanization, land resources are decreasing day by day, and urban high-rise and super high-rise buildings are increasing. In order to prevent accidents falling from high altitudes, every construction company attaches great importance to the erection of guardrails at the edge of the opening. . There are two main types of traditional guardrails at the edge of openings: the first one is the guardrail built with fasteners of construction steel pipes. The bar and the cross bar are connected by fasteners, which consume a large amount of steel; the specification of the steel pipe is 3.85kg/m, and the specification of the fastener is 1.25kg/piece; and the cross bar as a border protection, its bearing capacity requires It is not high. According to the JGJ80-91 safety technical specification for building construction work at heights, the length of the border protection cross bar is 2m, and the load-bearing requirement is 1000N. However, the steel pipe with a diameter of 48*3.5MM currently used has a strength far exceeding The use requirements lead to waste of materials, and the steel structure guardrail has high cost and high transportation cost. In addition, it is temporarily built and has an unattractive appearance. Standardization, normalization, and batch production cannot be realized. The second type of guardrail is to use square steel pipes and safety nets together, and it can also be used as diagonal braces or fixed with short steel pipes; due to the different sizes of the openings of doors and windows, it will cause troubles in the selection of material sizes, and the installation and disassembly are more complicated and cannot be disassembled Reassemble and recycle for recycling, resulting in waste of resources. It cannot be ignored that the above two traditional guardrails have brought unnecessary trouble and inconvenience to the later construction. Along with the masonry construction of the secondary structure project, the plastering and putty scraping of the decoration project, as well as the cleaning and decoration of the bay windows and air-conditioning panels on the outer wall, it is necessary to remove the guardrails at the edge of the opening from time to time. It needs to be restored afterwards. Different processes, different time, the installation and removal of protective railings, not only time-consuming and labor-intensive, but sometimes the protective railings are not restored after being dismantled at will, which will cause the edge of the opening to lose protection, burying hidden dangers for safe construction.

Generally speaking, the above two traditional border fences have the characteristics of cumbersome process steps, high cost, poor versatility and low recovery rate, which are far from the goals of energy saving, emission reduction, cost reduction and efficiency increase advocated by the current state. How to improve the standardization and tool construction of high-rise perimeter fences is an important issue that needs to be solved urgently in the current construction field. In view of this, the construction site urgently needs a kind of convenient transportation, low cost, safe and reliable, which is convenient for the post-construction of various types of work without dismantling the protective railing and can be operated and beautiful.

Contents of the invention

The purpose of the present invention is to provide two kinds of box-type portable border guardrails for safety management on construction sites, which have the characteristics of simple structure and easy installation and disassembly, and can be conveniently applied to construction sites as building border guardrails to ensure safety.

The first technical solution adopted by the present invention is that the box-type portable border guardrail for construction site safety management is composed of at least one border guardrail unit; if multiple border guardrail units are to be connected, multiple border guardrail units The side fence units are connected sequentially through columns; each side fence unit is composed of a box body and a telescopic net assembly connected to the box body, and the box body is in the shape of a cube; The way to shrink and store in the box.

The feature of the first technical solution of the present invention is also:

The telescopic protection net assembly includes two vertical poles and a telescopic protection net; the lower ends of the two poles extend into the box and are respectively connected to the opposite side walls with the smallest area on the box, and the joints are evenly spaced. It constitutes a rotating pair, which can make the two vertical rods rotate in the box and then be stored in the box; the upper ends of the two vertical rods are respectively provided with a vertical rod connector; after the two vertical rods are connected to the box, the two vertical rods opposite to each other An embedded chute is provided on each side; on the other side of the same vertical pole opposite to the side provided with the chute, a plurality of connecting blocks a are arranged from top to bottom, and the vertical pole is connected to the column through the connecting block a , the column is used to connect the pole of another border guardrail unit to realize the connection of two border guardrail units; the telescopic guard net includes a telescopic guard net fixed cross bar and a plurality of telescopic guard nets arranged in parallel from top to bottom Net support rods, a plurality of diamond-shaped telescopic parts are arranged between the fixed cross bar of the telescopic protection net and an adjacent telescopic protection net support rod, and are also arranged between any two adjacent telescopic protection net support rods There are multiple diamond-shaped telescopic parts, and the diamond-shaped telescopic parts connected to a telescopic mesh support rod at the bottom are also connected to the telescopic mesh joints welded at the bottom of the box, and the telescopic mesh fixes the cross bar and each telescopic mesh The support rods can slide up and down along the two chute to realize the expansion and contraction of the telescopic protection net. The two ends of the fixed cross bar of the telescopic protection net are respectively provided with a vertical rod connection hole with internal thread. The two vertical rod connecting holes can be connected with the two vertical rod connectors on the upper ends of the two vertical rods, so that the telescopic protective net fixing cross bar is fixed between the two vertical rods.

The bottom of the box is symmetrically provided with two support plate accommodation grooves near one long side, and the bottom of the box body is also symmetrically provided with two support plate accommodation grooves near the other long side; A rotatable rectangular support plate matching the size of the support plate accommodating groove is arranged in each support plate accommodating groove, and the rotatable rectangular support plate can be folded back into the corresponding support plate accommodating groove by rotating. It can be unfolded perpendicular to the long side of the box by rotating to increase stability.

The rhombus-shaped telescopic part is connected by four telescopic rods to form a rhombus.

Each connection block a is provided with a connection screw hole, and the column is connected with the connection screw hole on the connection block a by a screw; the column includes a vertically arranged column body, and the column body is cube-shaped; The lower end is fixedly connected with the column base, and a plurality of connection blocks b are arranged from top to bottom on the two opposite side walls of the column body, and each connection block b is provided with a connection hole, which is connected with the two connection blocks b. The lower part of the side wall of the vertical column body is fixedly connected with one end of the diagonal brace, and the other end of the diagonal brace cooperates with the column base to support the column body stably.

The second technical scheme adopted by the present invention is that the box-type portable border guardrail for construction site safety management is composed of at least one border guardrail unit; if multiple border guardrail units are to be connected, multiple The four border guardrail units are connected in turn; each border guardrail unit is composed of a box body and a telescopic net assembly connected with the box body, and the box body is in the shape of a cube; The way to shrink and store in the box.

The second technical solution of the present invention is characterized in that:

The telescopic protection net assembly includes two vertically arranged I-shaped poles and a telescopic protection net; the lower ends of the two I-shaped poles extend into the box and are respectively connected to the smallest and opposite sides of the box. The walls are connected and the joints form a rotating pair, so that the two I-shaped vertical poles can be rotated into the box and then stored in the box; the upper ends of the two I-shaped vertical poles are each equipped with a vertical pole connector; After the two I-shaped vertical rods are connected to the box body, an embedded chute is provided on the opposite sides of the two I-shaped vertical rods; On the opposite side, a plurality of connecting blocks c are equidistantly arranged from top to bottom, and the I-shaped vertical pole is connected with the connecting block c on the I-shaped vertical pole in another edge guardrail unit through the connecting block c, so as to Realize the connection of two border guardrail units; the telescopic protection net includes the telescopic protection net fixed cross bar and a plurality of telescopic protection net support rods arranged in parallel from top to bottom, and the telescopic protection net fixed cross bar and the adjacent A plurality of rhombic telescopic parts are arranged between one telescopic net support rod, and a plurality of rhombic telescopic parts are also arranged between any two adjacent telescopic net support rods. The diamond-shaped telescopic parts connected to the net support rods are also connected to the telescopic net joints welded at the bottom of the box. The fixed cross bar of the telescopic net and each telescopic net support bar can slide up and down along the two chutes to realize the expansion and contraction. When the protective net expands and shrinks, a vertical pole connecting hole with internal thread is opened at both ends of the fixed horizontal bar of the telescopic protective net. The two vertical rod connectors on the upper end are matched and connected, so that the fixed cross bar of the telescopic protective net is fixed between the two I-shaped vertical rods.

The bottom of the box is symmetrically arranged with two support plate accommodation grooves near one long side, and two support plate accommodation grooves are also symmetrically arranged at the bottom of the box close to the other long side. A rotatable rectangular support plate matching the size of the support plate accommodation groove is provided in each support plate accommodation groove, and the rotatable rectangular support plate can be folded back into the corresponding support plate accommodation groove by rotating, It can also be unfolded perpendicular to the long side of the box by rotating to increase stability.

The rhombus-shaped telescopic part is connected by four telescopic rods to form a rhombus.

Each connecting block c is provided with a connecting screw hole close to both ends.

The beneficial effects of the present invention are:

(1) The box-type portable border guardrail used for the safety management of the construction site according to the present invention can store the guardrail pole and the retractable protective net together in the box, so that the border guardrail appears in the construction field in a brand-new form , this form of edge guardrail greatly reduces the manufacturing cost.

(2) The box-type portable border guardrail used for construction site safety management of the present invention is very convenient to install and disassemble during use, and can be completed only by disassembling or connecting the upright column and the upright pole.

(3) For the box-type portable border guardrail used for construction site safety management of the present invention, since the guardrail pole and the retractable protective net can be placed in the box, during transportation, not only can increase the transportation Quantity, and loading and unloading is also very convenient; at the same time, at the construction site, individual handling and movement will appear easy and fast.

(4) The present invention is used for the box-type portable edge guardrail of construction site safety management, and all offer round hole at the upper end of two telescopic upright poles, and the horizontal bar two ends of the telescoping guard net top end that cooperates with it are also provided with correspondingly. round holes; when installing, lift the telescopic protective net to the upper end of the pole so that the round holes at the upper ends of the two vertical poles correspond to the round holes at both ends of the horizontal bar, and then fix it with bolts; when you need to put down the telescopic protective net, screw Open the fixing bolts and pull out the bolts to put down the telescopic protective net; with this design, it solves the problems of masonry construction in secondary structural engineering, plastering and putty in decoration engineering, bay windows on external walls, and air conditioners. The panel cleaning work and decoration process require the removal of the guardrails at the edge of the opening from time to time, and the disadvantages of needing to restore them afterwards.

(5) The box-type portable border guardrail used for safety management on the construction site of the present invention is equipped with a movable connection block on the pole, and the bottom of the box is provided with an accommodating bracket, and at the same time, it is also equipped with a column with a diagonal brace; The box-type border guardrail invented for the safety management of the construction site can be used according to the actual situation of the building body border and the opening of the construction site: ① It can be used for a single guard rail; ② Multiple guard rails can be connected through a column with a diagonal brace Unit use; ③In addition to being combined with the column and fixed on the floor, a single unit can also be fixed to the opening of the building through a movable connection block; ④The present invention can be used on the construction site through the accommodable bracket at the bottom of the box The box-type convenient border guardrail for safety management is placed alone or side by side, and is fixedly connected to the ground for use; it can be seen that the box-type border guardrail for construction site safety management of the present invention has a guardrail composed of steel pipe fasteners Unparalleled flexibility and versatility of use.

(6) The box-type portable border guardrail used for construction site safety management of the present invention can realize stereotyped production, realize construction site safety prevention management, can be reused repeatedly, and has a long service life.

Description of drawings

Fig. 1 is the front view of the unfolded state of a single border guardrail unit in the box-type portable border guardrail for construction site safety management of the present invention;

Fig. 2 is the top view of the unfolded state of a single border guardrail unit in the box-type portable border guardrail for construction site safety management according to the present invention;

Fig. 3 is a schematic diagram of the closed state of a single border fence unit in the box-type portable border fence for construction site safety management according to the present invention;

Fig. 4 is a front view of the first connection mode of two border guardrail units in the box-type portable border guardrail for construction site safety management according to the present invention and in an unfolded state;

Fig. 5 is a top view of the first connection mode of two border guardrail units in a box-type portable border guardrail for construction site safety management according to the present invention and in an unfolded state;

Fig. 6 is a schematic diagram of the stowed state of the box bottom support frame of a single border guardrail unit in the box-type portable border guardrail for construction site safety management according to the present invention;

Fig. 7 is a schematic diagram of the unfolded state of the box bottom support frame of a single border guardrail unit in the box-type portable border guardrail for construction site safety management according to the present invention;

Fig. 8 is a structural schematic diagram of a column in a box-type portable border guardrail for safety management on a construction site according to the present invention;

Fig. 9 is a front view of the second connection mode of two border guardrail units in the box-type portable border guardrail for construction site safety management according to the present invention and in an unfolded state;

Fig. 10 is a top view of the second connection mode of two border guardrail units in the box-type portable border guardrail for construction site safety management according to the present invention and in an unfolded state;

Fig. 11 is a schematic structural view of the connection block c involved in the box-type portable border fence used for construction site safety management according to the present invention.

In the figure, 1. Box body, 2. Telescopic protective net fixed crossbar, 3. Vertical pole, 4. Telescopic pole, 5. Telescopic protective net assembly, 6. Connection block a, 7. Rotatable rectangular support plate, 8 .Pole connection head, 9. Connection block c, 10. Chute, 11. Telescopic protection net support rod, 12. Telescopic protection net joint, 13. Column base, 14. Upright column, 15. Connection block b, 16. Inclined Support, 17. I-shaped vertical pole.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

An embodiment of the box-type portable border guardrail used for construction site safety management of the present invention, as shown in Figure 1, Figure 2 and Figure 3, is composed of at least one border guardrail unit; as shown in Figure 4 and Figure 5 As shown, if a plurality of border guardrail units are to be connected, then a plurality of border guardrail units are connected sequentially through columns 14; each border guardrail unit is composed of a box body 1 and a telescopic net assembly 5 connected to the box body 1, and The box body 1 is in the shape of a cube; the telescopic net assembly 5 can be deployed in an upward manner, and can also be retracted in a downward manner and stored in the box body 1 .

The telescopic protection net assembly 5, as shown in Fig. 1, Fig. 2 and Fig. 3, comprises two vertical poles 3 and telescopic protection nets arranged vertically; The upper area of the box body 1 is the smallest and the opposite side walls are connected and form a rotating pair at the connection, so that the two vertical rods 3 can be stored in the box body 1 after being able to rotate in the box body 1; the upper ends of the two vertical rods 3 Each vertical rod connector 8 is provided; after the two vertical rods 3 are connected to the box body 1, an embedded chute 10 is respectively provided on the opposite sides of the two vertical rods 3; On the opposite side of the side of 10, a plurality of connection blocks a6 are arranged from top to bottom, and the upright bar 3 is connected with the column 14 through the connection block a6, as shown in Figure 4 and Figure 5, the column 14 is used to connect another adjacent The pole 3 of the side fence unit is to realize the connection of two border fence units; the telescopic protection net includes a telescopic protection net fixed cross bar 2 and a plurality of telescopic protection net support rods 11 arranged in parallel from top to bottom, A plurality of diamond-shaped telescopic parts are arranged between the fixed cross bar 2 of the telescopic protection net and an adjacent telescopic protection net support rod 11, and a plurality of diamond-shaped telescopic parts are also arranged between any two adjacent telescopic protection net support rods 11. A plurality of diamond-shaped telescopic components, the rhombus-shaped telescopic components connected to a telescopic net support rod 11 at the bottom are also connected to the telescopic net joints 12 welded at the inner bottom of the box body 1, and the telescopic net fixes the cross bar 2 and each A telescopic net support rod 11 can slide up and down along two chute 10, so as to realize the expansion and contraction of the telescopic net, the two ends of the fixed cross bar 2 of the telescopic net are respectively provided with a vertical rod connection hole with an internal thread, and the telescopic net is fixed. The two vertical rod connecting holes on the fixed cross bar 2 of the protective net can be connected with the two vertical rod connectors 8 on the upper ends of the two vertical rods 3, so that the telescopic protective net fixed cross bar 2 is fixed between the two vertical rods 3 ( This can ensure the stability of the retractable protective net when it is in the unfolded state).

As shown in Fig. 6 and Fig. 7, there are two support plate accommodating grooves arranged bilaterally symmetrically near one long side at the bottom of the box body 1, and left-right symmetrically arranged near the other long side at the bottom of the box body 1 Two support plate accommodation grooves are provided, and a rotatable rectangular support plate 7 matching the size of the support plate accommodation groove is arranged in each support plate accommodation groove, and the rotatable rectangular support plate 7 can be rotated It can be folded back into the corresponding receiving groove of the support plate in a manner of rotation, and it can also be unfolded perpendicular to the long side of the box body 1 in a rotating manner to increase stability.

The rhombus telescopic part is connected by four telescopic rods 4 to form a rhombus.

Each connecting block a6 is provided with a connecting screw hole, and the column 14 is connected with the connecting screw hole on the connecting block a6 through a screw.

Column 14, as shown in Figure 8, comprises the column shaft that vertical setting is arranged, and column body is cube-shaped; Be fixed with column base 13 at the lower end of column body, all on the column body two relative sidewalls from top to bottom A plurality of connection blocks b15 are arranged below, and each connection block b15 is provided with a connection hole, and the lower part of the side wall of the column perpendicular to the two side walls of the connection block b15 is fixedly connected to one end of the diagonal brace 16, The other end of the diagonal brace 16 cooperates with the column base 13 to support the column body stably.

The present invention is used for the box-type convenient border guardrail of construction site safety management. The bottom surface 13 is fixedly connected with the floor, and the telescopic protection net assembly 5 can play a protective role;

Another embodiment of the box-type portable border guardrail for construction site safety management of the present invention, as shown in Figure 9 and Figure 10, is composed of at least one border guardrail unit; if multiple border guardrail units connection, then a plurality of edge guardrail units are connected sequentially; each edge guardrail unit is composed of a box body 1 and a telescopic net assembly 5 connected with the box body 1, and the box body 1 is in the shape of a cube; the telescopic net assembly 5 can It can be deployed in the manner of lifting, and can also be contracted in the manner of pressing down and stored in the box body 1 .

Telescopic protection net assembly 5, as shown in Figure 9 and Figure 10, comprises two vertically arranged I-shaped vertical rods 17 (the cross section is I-shaped) and telescopic protection net; two I-shaped vertical rods 17 The lower ends of all stretch into the box body 1 and are connected with the smallest and opposite side walls on the box body 1 respectively and all form a rotating pair at the connection, so that the two I-shaped vertical rods 17 can all move toward the box body 1. After internal rotation, it is stored in the box body 1; the upper ends of the two I-shaped vertical rods 17 are each provided with a vertical rod connector 8; after the two I-shaped vertical rods 17 are connected to the box body 1, the two I-shaped vertical rods A built-in chute 10 is respectively provided on the opposite side surfaces of the bar 17; A connecting block c9, the I-shaped vertical pole 17 is connected with the connecting block c9 on the I-shaped vertical pole 17 in another border guardrail unit through the connecting block c9, so as to realize the connection of the two border guardrail units; , including a telescopic net fixed bar 2 and a plurality of telescopic net support bars 11 arranged in parallel from top to bottom, between the telescopic net fixed bar 2 and an adjacent telescopic net support bar 11 A plurality of diamond-shaped telescopic parts are arranged between, and a plurality of rhombic telescopic parts are also arranged between any two adjacent telescopic net support rods 11. The rhombus-shaped telescopic part is also connected with the telescopic protection net joint 12 welded at the inner bottom of the box body 1. The telescopic protection net fixed cross bar 2 and each telescopic protection net support rod 11 can slide up and down along the two chute 10 to realize the telescopic protection. The net expands and shrinks, and the two ends of the fixed cross bar 2 of the telescopic protection net are respectively provided with a vertical rod connection hole with internal thread, and the two vertical rod connection holes on the fixed cross bar 2 of the telescopic protection net can be connected with two I-shaped vertical The two vertical rod connectors 8 on the upper end of the rod 17 are cooperatively connected, so that the fixed cross bar 2 of the telescopic protection net is fixed between the two I-shaped vertical rods 17 (this can ensure the stability of the telescopic protection net when it is in the unfolded state) .

As shown in Fig. 6 and Fig. 7, there are two support plate accommodating grooves arranged bilaterally symmetrically near one long side at the bottom of the box body 1, and left-right symmetrically arranged near the other long side at the bottom of the box body 1 Two support plate accommodation grooves are provided, and a rotatable rectangular support plate 7 matching the size of the support plate accommodation groove is arranged in each support plate accommodation groove, and the rotatable rectangular support plate 7 can be rotated It can be folded back into the corresponding receiving groove of the support plate in a manner of rotation, and it can also be unfolded perpendicular to the long side of the box body 1 in a rotating manner to increase stability.

The rhombus telescopic part is connected by four telescopic rods 4 to form a rhombus.

As shown in FIG. 11 , a connecting screw hole is provided on each connecting block c9 close to both ends.

The box-type convenient border guardrail used for the safety management of the construction site of the present invention has the advantages of convenient transportation and handling, convenient installation and disassembly, convenient use and recovery, and can be standardized and normalized and applied to the construction site.

Claims (10)

1. The box-type convenient border guardrail for construction site safety management is characterized in that it is composed of at least one border guardrail unit; if multiple border guardrail units are to be connected, then a plurality of border guardrail units pass through the column ( 14) connected sequentially; each of the border guardrail units is composed of a box body (1) and a telescopic net assembly (5) connected to the box body (1), and the box body (1) is in the shape of a cube; the The telescopic net assembly (5) can be deployed in an upward manner, and can also be contracted in a downward manner and be accommodated in the box body (1). 2. The box-type convenient border protection fence for construction site safety management according to claim 1, characterized in that, the telescopic protection net assembly (5) includes two vertically arranged poles (3 ) and retractable netting; The lower ends of the two vertical rods (3) all extend into the box body (1) and are respectively connected with the smallest and opposite side walls of the upper box body (1) and form a rotating pair at the joints, so that the two vertical rods can The rods (3) can be stored in the cabinet (1) after being able to rotate in the box body (1); the upper ends of the two vertical rods (3) are each provided with a vertical rod connector (8); the two vertical rods (3) After being connected to the box body (1), a built-in chute (10) is provided on the opposite side surfaces of the two vertical rods (3); on the same vertical rod (3), a chute is provided On the opposite side of the side of (10), a plurality of connection blocks a (6) are arranged from top to bottom, and the vertical rod (3) is connected with the column (14) by the connection block a (6), and the column (14) a pole (3) for connecting another border guardrail unit, to realize the connection of two border guardrail units; The telescopic protection net includes a telescopic protection net fixed cross bar (2) and a plurality of telescopic protection net support rods (11) arranged in parallel from top to bottom, and the telescopic protection net fixed cross bar (2) and A plurality of rhombic telescopic parts are arranged between adjacent telescopic net support rods (11), and a plurality of rhombic telescopic parts are also arranged between any two adjacent telescopic net support rods (11) , the diamond-shaped telescopic part connected to a telescopic protection net support rod (11) at the bottom is also connected with the telescopic protection net joint (12) welded at the inner bottom of the box body (1), and the telescopic protection net fixes the cross bar (2) and each telescopic protective net support bar (11) can slide up and down along two chute (10), to realize the expansion and contraction of the telescopic protective net, the two ends of the fixed cross bar (2) are fixed by the telescopic protective net A vertical rod connection hole with an internal thread is provided respectively, and the two vertical rod connection holes on the fixed cross bar (2) of the telescopic guard net can be connected with the two vertical rod connectors (8) on the upper ends of the two vertical rods (3). Cooperate with the connection, so that the fixed cross bar (2) of the telescopic guard net is fixed between the two vertical bars (3). 3. The box-type convenient border guardrail for construction site safety management according to claim 1 or 2, characterized in that, the bottom of the box (1) is symmetrically arranged near a long side Two support plate accommodation grooves, the bottom of the box (1) near the other long side is also symmetrically provided with two support plate accommodation grooves; each of the support plate accommodation grooves is provided with A rotatable rectangular support plate (7) matching the size of the support plate accommodation groove, the rotatable rectangular support plate (7) can be folded back into the corresponding support plate accommodation groove by rotating, and It can be expanded perpendicular to the long side of the box body (1) by rotating to increase stability. 4. The box-type convenient border guardrail for construction site safety management according to claim 2, characterized in that, the rhombus-shaped telescopic part is composed of four telescopic rods (4) connected at the end to form a rhombus. 5. The box-type convenient border guardrail for construction site safety management according to claim 2, characterized in that, each of the connecting blocks a (6) is provided with a connecting screw hole, and the column (14) be connected with the connection screw hole on the connection block a (6) by screw rod; The column (14) includes a column shaft vertically arranged, and the column body is cube-shaped; a column base (13) is affixed to the lower end of the column body, and on two opposite sides of the column body A plurality of connection blocks b (15) are arranged on the wall from top to bottom, and each connection block b (15) is provided with a connection hole, which is perpendicular to the two side walls of the connection block b (15). The lower part of the side wall of the column body is fixedly connected with one end of the diagonal brace (16), and the other end of the diagonal brace (16) cooperates with the column base (13) to support the column body stably. 6. The box-type convenient border guardrail for construction site safety management is characterized in that it is composed of at least one border guardrail unit; if multiple border guardrail units are to be connected, multiple border guardrail units are sequentially connected connect; Each of the border guardrail units is composed of a box body (1) and a telescopic net assembly (5) connected to the box body (1), and the box body (1) is cube-shaped; the telescopic net assembly ( 5) It can be deployed in an upward manner, and can also be contracted in a downward manner and stored in the box (1). 7. The box-type convenient border guardrail for construction site safety management according to claim 6, characterized in that, the telescopic protection net assembly (5) includes two vertically arranged I-shaped stand Rod (17) and telescopic guard net; The lower ends of the two I-shaped vertical rods (17) all extend into the box body (1) and are respectively connected to the opposite side walls with the smallest area on the box body (1) and form rotating pairs at the joints. The two I-shaped vertical rods (17) can be stored in the cabinet (1) after they can be rotated into the box body (1); the upper ends of the two I-shaped vertical rods (17) are each provided with a vertical Rod connector (8); after the two I-shaped vertical rods (17) are connected to the box body (1), an embedded The chute (10); on the same I-shaped vertical rod (17), on the other side opposite to the side that is provided with the chute (10), a plurality of connecting blocks c (9) are equidistantly arranged from top to bottom ), the I-shaped pole (17) is connected with the connection block c (9) on the I-shaped pole (17) in another border guardrail unit through the connecting block c (9), so as to realize two adjacent Connection of side guardrail units; The telescopic protection net includes a telescopic protection net fixed cross bar (2) and a plurality of telescopic protection net support rods (11) arranged in parallel from top to bottom. A plurality of diamond-shaped telescopic parts are arranged between adjacent telescopic net support rods (11), and a plurality of rhombic telescopic parts are also arranged between any two adjacent telescopic net support rods (11), The diamond-shaped telescopic part connected to a telescopic net support rod (11) at the bottom is also connected with the telescopic net joint (12) welded at the inner bottom of the box body (1), and the telescopic net fixes the crossbar (2) And each telescopic net support rod (11) can slide up and down along two chute (10), to realize telescopic net expansion and contraction, respectively set a The vertical rod connecting holes with internal threads, the two vertical rod connecting holes on the fixed cross bar (2) of the telescopic guard net can be connected with the two vertical rod connectors (8) on the upper ends of the two I-shaped vertical rods (17). ) is matched and connected, so that the fixed cross bar (2) of the telescopic guard net is fixed between two I-shaped vertical bars (17). 8. The box-type convenient border guardrail for construction site safety management according to claim 6 or 7, characterized in that, the bottom of the box (1) is symmetrically arranged on the left and right near a long side Two support plate accommodation grooves, two support plate accommodation grooves are also symmetrically arranged at the bottom of the box (1) close to the other long side, and each support plate accommodation groove A rotatable rectangular support plate (7) matching the size of the support plate accommodating groove is provided, and the rotatable rectangular support plate (7) can be folded back into the corresponding support plate accommodating groove through rotation, It can also be expanded perpendicular to the long side of the box body (1) in a rotating manner to increase stability. 9. The box-type convenient border guardrail for construction site safety management according to claim 7, characterized in that, the rhombus-shaped telescopic part is composed of four telescopic rods (4) connected at the end to form a rhombus. 10. The box-type convenient border guardrail for construction site safety management according to claim 7, characterized in that, each connecting block c (9) is provided with a connecting screw hole close to both ends.