CN216341419U - Building guardrail for civil engineering - Google Patents

Abstract

The utility model discloses a building guardrail for civil engineering, which comprises a base, wherein a groove is formed in the upper end of the base, a stand column is inserted into the groove, a fixing component is arranged on the front surface of the base and movably connected with the stand column, and a connecting mechanism is arranged on the side wall of the stand column. By adopting the structure, the stand column is inserted into the groove, the stand column is fixed in the groove through the fixing assembly, the stand column can be connected with the base, then the two stand columns are connected through the first connecting rod and the second connecting rod by using the connecting mechanism, the position of the first connecting rod is fixed by using the fixing assembly, and the position of the second connecting rod is supported by using the supporting mechanism, so that the assembling work of the building guardrail can be completed.

Description

Building guardrail for civil engineering

Technical Field

The utility model belongs to the field of civil engineering, and particularly relates to a building guardrail for civil engineering.

Background

Civil engineering refers to the applied materials, equipment, the technical activities of surveying, designing, constructing, maintaining, repairing and the like, and also refers to the objects of engineering construction, namely, various engineering facilities which are constructed on the ground or underground or on land and directly or indirectly serve human life, production, military and scientific research, such as houses, roads, railways, pipelines, tunnels, bridges, canals, dams, harbors, power stations, airports, ocean platforms, water supply and drainage, protection engineering and the like.

In the prior art, building guardrail construction work is usually required when civil engineering is carried out, but the building guardrail in the prior art is very inconvenient when being constructed, so that a large amount of time is required to be consumed for carrying out the building work of the guardrail, the progress of the civil engineering is influenced, and the building guardrail in the prior art is large in size and is inconvenient to carry and store.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a building guardrail for civil engineering, aiming at solving the problems that the building guardrail in the prior art is inconvenient to build and store and carry.

The technical purpose of the utility model is realized by the following technical scheme:

the utility model provides a building guardrail for civil engineering, includes the base, the upper end of base is seted up flutedly, it has the stand to peg graft in the inside of recess, the front of base is provided with fixed subassembly, fixed subassembly and stand swing joint, the lateral wall of stand is provided with coupling mechanism, there is the head rod upper end of stand lateral wall through coupling mechanism swing joint, the upper end of stand is provided with first locating component, first locating component and head rod swing joint, the lower extreme of stand lateral wall has the second connecting rod through coupling mechanism swing joint, the upper end of head rod is provided with supporting mechanism, supporting mechanism and second connecting rod swing joint.

Through adopting the above technical scheme, through the inside with the stand inserts the recess, and fix the stand in the inside of recess through fixed subassembly, can be connected stand and base, then use coupling mechanism to be connected two stands through first connecting rod and second connecting rod, and use the position of the fixed first connecting rod of fixed subassembly, support the position of second connecting rod through supporting mechanism, can accomplish the equipment work of building guardrail, and the operation is simple, the dismouting of being convenient for, and can splice the use by a plurality of building guardrails, it is also more convenient when storing and carrying simultaneously.

Further, as preferred technical scheme, fixed subassembly is including leading to groove, screw rod and thread groove, lead to the groove and set up in the front of base, it is linked together with the recess to lead to the groove, the screw rod rotates the inside of connecting at leading to the groove, the one end of screw rod stretches into the inside of recess through leading to the groove, the stand is run through to the one end of screw rod, the inner wall at the recess is set up to the thread groove, the one end threaded connection of screw rod is in the inside of thread groove.

Through adopting above-mentioned technical scheme, run through groove and stand through the one end that makes the screw rod to make the one end threaded connection of screw rod in the inside of thread groove, can make the one end threaded connection of screw rod in the inside of thread groove, thereby make fixed subassembly reach and fix the effect at recess inside with the stand.

Further, as a preferred technical scheme, the connecting mechanism includes a first chute, a first connecting rod and a first limiting component, the first chute is arranged at the upper end of the side wall of the base, one end of the first connecting rod is slidably connected inside the first chute, the first limiting component is arranged on the outer wall of one end of the first connecting rod, and the upper end of the first connecting rod is movably connected with the first limiting component.

Through adopting above-mentioned technical scheme, through head rod sliding connection in the inside of first spout to stabilize the horizontal position of head rod through first spacing subassembly, through the vertical position of fixed head rod of fixed subassembly, can stabilize the inside at first spout with the one end of head rod, thereby make coupling mechanism reach the effect of being connected head rod and stand.

Further, as a preferred technical scheme, the first limiting assembly comprises a first limiting block and a first limiting groove, the first limiting block is fixedly installed on the outer wall of one end of the first connecting rod, the first limiting groove is formed in the inner wall of the first sliding groove, and the first limiting block is slidably connected inside the first limiting groove.

Through adopting above-mentioned technical scheme, through first stopper sliding connection in the inside of first spacing groove, can make first spacing subassembly play the effect of the firm head rod lateral position, avoid the head rod to drop.

Further, as a preferred technical scheme, a second sliding groove is formed in the side wall of the stand column, the second sliding groove is communicated with the first sliding groove, one end of the second connecting rod is connected to the inside of the second sliding groove in a sliding mode, and a second limiting assembly is arranged on the outer wall of one end of the second connecting rod.

Through adopting above-mentioned technical scheme, through the one end sliding connection of second connecting rod in the inside of second spout to stabilize the horizontal position of second connecting rod through the spacing subassembly of second, stabilize the fore-and-aft position of second connecting rod through supporting mechanism, can be that the second connecting rod plays the effect of two stand positions of stabilizing.

Further, as an optimal technical scheme, the second limiting component comprises a second limiting block and a second limiting groove, the second limiting block is fixedly connected to the outer wall of one end of the second connecting rod, the second limiting groove is formed in the inner wall of the second sliding groove, and the second limiting block is slidably connected to the inner portion of the second limiting groove.

Through adopting above-mentioned technical scheme, through second stopper sliding connection in the inside of second spacing groove, make the spacing subassembly of second reach the effect of firm second connecting rod lateral position, avoid the second connecting rod to drop.

Further, as a preferred technical scheme, the first positioning component comprises a top cover, a thread block and a first warning light, the top cover is attached to the upper end of the stand column, the thread block is fixedly connected to the lower end of the top cover, the thread block is connected to the inside of the first sliding groove in a threaded mode, the lower end of the thread block is attached to the first connecting rod, and the first warning light is arranged at the upper end of the top cover.

Through adopting above-mentioned technical scheme, through the inside with thread block threaded connection at first spout, reach and fix the effect in the stand upper end with the bottom, and the lower extreme through the thread block is connected with the head rod laminating, can make first positioning subassembly play the effect of the vertical position of firm head rod, avoid the head rod slippage, can play the warning effect through first warning light simultaneously.

Further, as preferred technical scheme, supporting mechanism includes mounting groove, installation piece, supporting component and second warning light, the upper end at the head rod is seted up to the mounting groove, installation piece threaded connection is in the inside of mounting groove, the supporting component sets up the lower extreme at the installation piece, supporting component and second connecting rod swing joint, the second warning light sets up the upper end at the installation piece.

Through adopting above-mentioned technical scheme, through the inside of installation piece threaded connection at the mounting groove, make the installation piece reach the effect of fixed supporting component position to make supporting component be connected with the second connecting rod, can make supporting mechanism reach the effect of firm second connecting rod longitudinal position, and can play the warning effect through the second warning light.

Further, as a preferred technical scheme, the supporting component comprises a rotating groove, a supporting rod and a slot, the rotating groove is formed in the lower end of the mounting block, the supporting rod is rotatably connected inside the rotating groove, a second positioning component is arranged at the upper end of the supporting rod, the lower end of the supporting rod penetrates through the first connecting rod, the slot is formed in the upper end of the second connecting rod, and the lower end of the supporting rod is inserted into the slot.

Through adopting above-mentioned technical scheme, rotate the inside of connecting at the turn trough through the bracing piece to through the position of the firm bracing piece of second locating component, can avoid the installation piece to make the position that influences the bracing piece rotating, thereby make the lower extreme of bracing piece peg graft in the inside of slot, make supporting component play the effect of supporting second connecting rod position.

Further, as preferred technical scheme, the second locating component includes locating piece and constant head tank, locating piece fixed mounting is in the upper end of bracing piece, the constant head tank is seted up in the inside of rotary trough, the locating piece rotates the inside of connecting at the constant head tank.

Through adopting above-mentioned technical scheme, rotate through the second locating piece and connect in the inside of constant head tank, make second locating component play the effect of firm bracing piece in the inside position of rotary trough, avoid the bracing piece to drop the position that influences the second connecting rod.

In summary, the utility model mainly has the following beneficial effects:

firstly, the stand column is inserted into the groove, the stand column is fixed in the groove through the fixing assembly, the stand column can be connected with the base, then the two stand columns are connected through the first connecting rod and the second connecting rod by using the connecting mechanism, the position of the first connecting rod is fixed by using the fixing assembly, and the position of the second connecting rod is supported by using the supporting mechanism, so that the assembling work of the building guardrail can be completed;

second, with the inside that the second connecting rod slided into the second spout through first spout, and through the position of the firm second connecting rod of the spacing subassembly of second, then slide the inside of first spout with the head rod, and through the position of the firm head rod of first spacing subassembly, then use the position of the fixed head rod of fixed subassembly, and through the position of the firm second connecting rod of supporting mechanism, can make the head rod, the second connecting rod reaches the effect of connecting two stands, accomplish the equipment work of building guardrail.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the base structure of the present invention;

FIG. 3 is a schematic view of the column construction of the present invention;

FIG. 4 is a cross-sectional view of the support mechanism of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4 according to the present invention.

Reference numerals: 1. a base; 2. a groove; 3. a column; 4. a fixing assembly; 41. a through groove; 42. a screw; 43. a thread groove; 5. a connecting mechanism; 51. a first chute; 52. a first connecting rod; 53. a first limit component; 531. a first stopper; 532. a first limit groove; 54. a second chute; 55. a second connecting rod; 56. a second limiting component; 561. a second limiting block; 562. a second limit groove; 6. a first positioning assembly; 61. a top cover; 62. a thread block; 63. a first warning light; 7. a support mechanism; 71. mounting grooves; 72. mounting blocks; 73. a support assembly; 731. rotating the groove; 732. a support bar; 733. a slot; 74. a second positioning assembly; 741. positioning blocks; 742. positioning a groove; 75. and a second warning light.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-5, the building guardrail for civil engineering according to this embodiment includes a base 1, a groove 2 is formed at an upper end of the base 1, a column 3 is inserted into the groove 2, a fixing component 4 is disposed on a front surface of the base 1, the fixing component 4 is movably connected to the column 3, a connecting mechanism 5 is disposed on a side wall of the column 3, a first connecting rod 52 is movably connected to an upper end of a side wall of the column 3 through the connecting mechanism 5, a first positioning component 6 is disposed on an upper end of the column 3, the first positioning component 6 is movably connected to the first connecting rod 52, a second connecting rod 55 is movably connected to a lower end of the side wall of the column 3 through the connecting mechanism 5, a supporting mechanism 7 is disposed on an upper end of the first connecting rod 52, and the supporting mechanism 7 is movably connected to the second connecting rod 55; through the inside with stand 3 insert recess 2, and fix stand 3 in recess 2's inside through fixed subassembly 4, can be connected stand 3 and base 1, then use coupling mechanism 5 to be connected two stands 3 through head rod 52 and second connecting rod 55, and use the position of the fixed subassembly 4 fixed head rod 52, support the position of second connecting rod 55 through supporting mechanism 7, can accomplish the equipment work of building guardrail, and the easy operation, the dismouting of being convenient for, and can splice the use by a plurality of building guardrails, it is also more convenient when storing and carrying simultaneously.

Example 2

Referring to fig. 2, on the basis of embodiment 1, in order to achieve the purpose of fixing the upright column 3 inside the groove 2, the present embodiment has an innovative design on the fixing assembly 4, specifically, the fixing assembly 4 includes a through groove 41, a screw rod 42 and a threaded groove 43, the through groove 41 is opened on the front surface of the base 1, the through groove 41 is communicated with the groove 2, the screw rod 42 is rotatably connected inside the through groove 41, one end of the screw rod 42 extends into the inside of the groove 2 through the through groove 41, one end of the screw rod 42 penetrates through the upright column 3, the threaded groove 43 is opened on the inner wall of the groove 2, and one end of the screw rod 42 is in threaded connection inside the threaded groove 43; by passing one end of the screw rod 42 through the through groove 41 and the upright post 3 and screwing one end of the screw rod 42 into the screw groove 43, one end of the screw rod 42 can be screwed into the screw groove 43, so that the fixing component 4 can fix the upright post 3 into the groove 2.

Referring to fig. 3, for the purpose of connecting the first connecting rod 52 with the upright column 3, the connecting mechanism 5 of the present embodiment includes a first sliding slot 51, a first connecting rod 52 and a first limiting component 53, the first sliding slot 51 is disposed at the upper end of the side wall of the base 1, one end of the first connecting rod 52 is slidably connected inside the first sliding slot 51, the first limiting component 53 is disposed on the outer wall of one end of the first connecting rod 52, and the upper end of the first connecting rod 52 is movably connected with the first positioning component 6; the first connecting rod 52 is slidably connected inside the first sliding groove 51, the first limiting component 53 is used for stabilizing the transverse position of the first connecting rod 52, and the fixing component 4 is used for fixing the longitudinal position of the first connecting rod 52, so that one end of the first connecting rod 52 can be stabilized inside the first sliding groove 51, and the connecting mechanism 5 can achieve the effect of connecting the first connecting rod 52 with the upright post 3.

Referring to fig. 3, in order to stabilize the transverse position of the first connecting rod 52, the first limiting assembly 53 of this embodiment includes a first limiting block 531 and a first limiting groove 532, the first limiting block 531 is fixedly installed on the outer wall of one end of the first connecting rod 52, the first limiting groove 532 is opened on the inner wall of the first sliding groove 51, and the first limiting block 531 is slidably connected inside the first limiting groove 532; through the sliding connection of the first limiting block 531 in the first limiting groove 532, the first limiting component 53 can be used for stabilizing the transverse position of the first connecting rod 52, and the first connecting rod 52 is prevented from falling off.

Referring to fig. 3, in order to achieve the purpose of connecting the second connecting rod 55 with the upright column 3, a second sliding groove 54 is formed in the side wall of the upright column 3 in the embodiment, the second sliding groove 54 is communicated with the first sliding groove 51, one end of the second connecting rod 55 is slidably connected inside the second sliding groove 54, and a second limiting component 56 is arranged on the outer wall of one end of the second connecting rod 55; one end of the second connecting rod 55 is slidably connected inside the second sliding groove 54, the transverse position of the second connecting rod 55 is stabilized by the second limiting component 56, the longitudinal position of the second connecting rod 55 is stabilized by the supporting mechanism 7, and the second connecting rod 55 can stabilize the positions of the two upright posts 3.

Referring to fig. 3, in order to achieve the purpose of stabilizing the transverse position of the second connecting rod 55, the second limiting assembly 56 of this embodiment includes a second limiting block 561 and a second limiting groove 562, the second limiting block 561 is fixedly connected to the outer wall of one end of the second connecting rod 55, the second limiting groove 562 is arranged on the inner wall of the second sliding groove 54, and the second limiting block 561 is slidably connected to the inside of the second limiting groove 562; through second stopper 561 sliding connection in the inside of second spacing groove 562, make second spacing subassembly 56 reach the effect of firm second connecting rod 55 lateral position, avoid second connecting rod 55 to drop.

Example 3

Referring to fig. 3, on the basis of embodiment 2, in order to achieve the purpose of stabilizing the longitudinal position of the first connecting rod 52, the present embodiment has an innovative design on the first positioning assembly 6, specifically, the first positioning assembly 6 includes a top cover 61, a threaded block 62 and a first warning light 63, the top cover 61 is attached to the upper end of the upright 3, the threaded block 62 is fixedly connected to the lower end of the top cover 61, the threaded block 62 is screwed inside the first sliding groove 51, the lower end of the threaded block 62 is attached to the first connecting rod 52, and the first warning light 63 is disposed on the upper end of the top cover 61; through the inside with screw block 62 threaded connection at first spout 51, reach and fix the effect in the stand 3 upper end with the bottom, and the lower extreme through screw block 62 is connected with the laminating of head rod 52, can make first locating component 6 play the effect of the vertical position of firm head rod 52, avoid the head rod 52 slippage, can play the warning effect through first warning light 63 simultaneously.

Referring to fig. 4-5, for the purpose of stabilizing the longitudinal position of the second connecting rod 55, the supporting mechanism 7 of the present embodiment includes a mounting groove 71, a mounting block 72, a supporting component 73 and a second warning light 75, the mounting groove 71 is opened at the upper end of the first connecting rod 52, the mounting block 72 is screwed inside the mounting groove 71, the supporting component 73 is disposed at the lower end of the mounting block 72, the supporting component 73 is movably connected with the second connecting rod 55, and the second warning light 75 is disposed at the upper end of the mounting block 72; through the inside of installation piece 72 threaded connection at mounting groove 71, make installation piece 72 reach the effect of fixed supporting component 73 position to make supporting component 73 be connected with second connecting rod 55, can make supporting mechanism 7 reach the effect of firm second connecting rod 55 vertical position, and can play the warning effect through second warning light 75.

Referring to fig. 4, in order to achieve the purpose of supporting the position of the second connecting rod 55, the supporting assembly 73 of this embodiment includes a rotating groove 731, a supporting rod 732 and a slot 733, the rotating groove 731 is disposed at the lower end of the mounting block 72, the supporting rod 732 is rotatably connected inside the rotating groove 731, the upper end of the supporting rod 732 is provided with the second positioning assembly 74, the lower end of the supporting rod 732 penetrates through the first connecting rod 52, the slot 733 is disposed at the upper end of the second connecting rod 55, and the lower end of the supporting rod 732 is inserted into the slot 733; the supporting rod 732 is rotatably connected inside the rotating groove 731, and the position of the supporting rod 732 is stabilized by the second positioning component 74, so that the position of the supporting rod 732 is prevented from being influenced by the rotation of the mounting block 72, the lower end of the supporting rod 732 is inserted into the slot 733, and the supporting component 73 supports the position of the second connecting rod 55.

Referring to fig. 5, for the purpose of stabilizing the position of the supporting rod 732, the second positioning assembly 74 of the present embodiment includes a positioning block 741 and a positioning slot 742, the positioning block 741 is fixedly mounted at the upper end of the supporting rod 732, the positioning slot 742 is disposed inside the rotating slot 731, and the positioning block 741 is rotatably connected inside the positioning slot 742; the second positioning block 741 is rotatably connected to the inside of the positioning slot 742, so that the second positioning element 74 can stabilize the position of the supporting rod 732 in the rotating slot 731, and the supporting rod 732 is prevented from falling off and affecting the position of the second connecting rod 55.

The use principle and the advantages are as follows: when the building guardrail is assembled, the upright post 3 is inserted into the groove 2, the screw rod 42 is inserted into the through groove 41, one end of the screw rod 42 penetrates through the upright post 3 and is connected with the inside of the thread groove 43 in a threaded manner, namely, the upright post 3 and the base 1 can be connected through the fixing component 4, one end of the second connecting rod 55 slides into the second sliding groove 54 through the first sliding groove 51 and is connected with the inside of the second limiting groove 562 through the second limiting block 561 in a sliding manner, so that the transverse position of one end of the second connecting rod 55 can be stabilized by the second limiting component 56, one end of the first connecting rod 52 slides into the first sliding groove 51 and is connected with the inside of the first limiting groove 532 through the first limiting block 531 in a sliding manner, so that the transverse position of the first connecting rod 52 can be stabilized by the first limiting component 53, and the thread block 62 is connected with the inside of the first sliding groove 51, the top cover 61 can be fixed at the upper end of the upright posts 3, and the lower end of the thread block 62 is connected with the first connecting rod 52 in a fitting manner, so that the first positioning component 6 can stabilize the longitudinal position of the first connecting rod 52, then the mounting block 72 is connected in the mounting groove 71 in a threaded manner, so that the mounting block 72 fixes the position of the supporting rod 732, and is rotatably connected in the positioning groove 742 through the positioning block 741, so that the second positioning component 74 can stabilize the position of the supporting rod 732 in the rotating groove 731, thereby preventing the supporting rod 732 from falling off and affecting the position of the second connecting rod 55, so that the lower end of the supporting rod 732 can be inserted in the slot 733, so that the supporting component 73 can support the position of the second connecting rod 55, and the supporting mechanism 7 can stabilize the longitudinal position of the second connecting rod 55, the first connecting rod 52 and the second connecting rod 55 can connect a plurality of upright posts 3 through the connecting mechanism 5, and then accomplish the equipment work of building guardrail, easy operation, the dismouting of being convenient for to promote building guardrail's the efficiency of buildding, it is also more convenient when storing and carrying simultaneously, and can splice the use by a plurality of building guardrails, and play the warning effect through first warning light 63 and second warning light 75.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a building guardrail for civil engineering which characterized in that: comprises a base (1), the upper end of the base (1) is provided with a groove (2), the inside of the groove (2) is inserted with a column (3), the front of the base (1) is provided with a fixed component (4), the fixed component (4) is movably connected with the upright post (3), the side wall of the upright post (3) is provided with a connecting mechanism (5), the upper end of the side wall of the upright post (3) is movably connected with a first connecting rod (52) through a connecting mechanism (5), the upper end of the upright post (3) is provided with a first positioning component (6), the first positioning component (6) is movably connected with a first connecting rod (52), the lower end of the side wall of the upright post (3) is movably connected with a second connecting rod (55) through a connecting mechanism (5), the upper end of the first connecting rod (52) is provided with a supporting mechanism (7), and the supporting mechanism (7) is movably connected with the second connecting rod (55).

2. The building guardrail for civil engineering as claimed in claim 1, wherein: fixed subassembly (4) are including leading to groove (41), screw rod (42) and thread groove (43), lead to groove (41) and set up the front at base (1), it is linked together with recess (2) to lead to groove (41), screw rod (42) are rotated and are connected in the inside that leads to groove (41), the one end of screw rod (42) is passed through the inside that leads to groove (41) and stretch into recess (2), stand (3) are run through to the one end of screw rod (42), the inner wall at recess (2) is set up in thread groove (43), the one end threaded connection of screw rod (42) is in the inside of thread groove (43).

3. The building guardrail for civil engineering as claimed in claim 1, wherein: coupling mechanism (5) include first spout (51), head rod (52) and first spacing subassembly (53), set up in the upper end of base (1) lateral wall in first spout (51), the inside at first spout (51) of the one end sliding connection of head rod (52), first spacing subassembly (53) set up the outer wall in head rod (52) one end, the upper end and the first spacing subassembly (6) swing joint of head rod (52).

4. The building guardrail for civil engineering as claimed in claim 3, wherein: first spacing subassembly (53) include first stopper (531) and first spacing groove (532), first stopper (531) fixed mounting is at the outer wall of head rod (52) one end, the inner wall at first spout (51) is seted up in first spacing groove (532), first stopper (531) sliding connection is in the inside of first spacing groove (532).

5. The building guardrail for civil engineering as claimed in claim 3, wherein: the side wall of the upright post (3) is provided with a second sliding groove (54), the second sliding groove (54) is communicated with the first sliding groove (51), one end of a second connecting rod (55) is connected to the inside of the second sliding groove (54) in a sliding mode, and the outer wall of one end of the second connecting rod (55) is provided with a second limiting component (56).

6. The building guardrail for civil engineering as claimed in claim 5, wherein: the second limiting component (56) comprises a second limiting block (561) and a second limiting groove (562), the second limiting block (561) is fixedly connected to the outer wall of one end of the second connecting rod (55), the second limiting groove (562) is formed in the inner wall of the second sliding groove (54), and the second limiting block (561) is connected to the inside of the second limiting groove (562) in a sliding mode.

7. The building guardrail for civil engineering as claimed in claim 1, wherein: first locating component (6) include top cap (61), screw block (62) and first warning light (63), the upper end at stand (3) is connected in the laminating of top cap (61), screw block (62) fixed connection is at the lower extreme of top cap (61), screw block (62) threaded connection is in the inside of first spout (51), the lower extreme and the head rod (52) laminating of screw block (62) are connected, first warning light (63) set up the upper end at top cap (61).

8. The building guardrail for civil engineering as claimed in claim 1, wherein: supporting mechanism (7) include mounting groove (71), installation piece (72), supporting component (73) and second warning light (75), the upper end at head rod (52) is seted up in mounting groove (71), installation piece (72) threaded connection is in the inside of mounting groove (71), supporting component (73) set up the lower extreme at installation piece (72), supporting component (73) and second connecting rod (55) swing joint, second warning light (75) set up the upper end at installation piece (72).

9. The building guardrail for civil engineering as claimed in claim 8, wherein: the supporting component (73) comprises a rotating groove (731), a supporting rod (732) and a slot (733), the rotating groove (731) is arranged at the lower end of the mounting block (72), the supporting rod (732) is rotatably connected inside the rotating groove (731), a second positioning component (74) is arranged at the upper end of the supporting rod (732), the lower end of the supporting rod (732) penetrates through the first connecting rod (52), the slot (733) is arranged at the upper end of the second connecting rod (55), and the lower end of the supporting rod (732) is inserted into the slot (733).

10. The building guardrail for civil engineering as claimed in claim 9, wherein: the second positioning assembly (74) comprises a positioning block (741) and a positioning groove (742), the positioning block (741) is fixedly mounted at the upper end of the support rod (732), the positioning groove (742) is formed in the rotating groove (731), and the positioning block (741) is rotatably connected to the inside of the positioning groove (742).

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