阅读说明：本技术 一种建筑施工用预警式临边防护栏及使用方法 (Early warning type frontier defense guardrail for building construction and use method ) 是由 广家成 于 2020-05-18 设计创作，主要内容包括：本发明涉及一种建筑施工用预警式临边防护栏及使用方法,包括底座单元、定位单元、防护网组和两个警报单元,所述的底座单元的左右两端对称设有定位单元,底座单元的中部设有防护网组,防护网组的左右两侧设有两个警报单元。本发明可以解决由于基坑边坡通常为斜坡式的土壤层,且搭建后的防护栏直接暴露在外部环境下,在大雨冲洗以及风吹的冲击下,容易发生水土流失的现象,搭建在边坡边上的防护栏下端的插入端容易与土壤之间出现松动的情况,由于人员未能及时发现,后期极易引发安全隐患,且现有的防护栏结构简单,当其受到外界影响较大时,会直接出现倾斜倒塌的情况等难题。(The invention relates to an early warning type limb protection guardrail for building construction and a using method thereof. The invention can solve the problems that the foundation pit side slope is usually a slope type soil layer, the built protective guard is directly exposed in the external environment, water and soil loss is easy to occur under the impact of heavy rain washing and wind blowing, the loose condition between the insertion end at the lower end of the protective guard built on the side slope and the soil is easy to occur, potential safety hazards are easy to cause in the later period because personnel cannot find the situation in time, the existing protective guard has a simple structure, and when the existing protective guard is greatly influenced by the outside, the situation of inclined collapse can be directly generated, and the like.)

1. The utility model provides a frontier defense guardrail is faced to early warning formula for construction, includes base unit (1), positioning unit (2), protection net group (3) and two alarm unit (4), its characterized in that: the left end and the right end of the base unit (1) are symmetrically provided with positioning units (2), the middle part of the base unit (1) is provided with a protection net set (3), and the left side and the right side of the protection net set (3) are provided with two alarm units (4);

the base unit (1) comprises a base (11), two storage boxes (12), two covering nets (13), an insertion cone (14), two clamping frames (15) and two extrusion blocks (16), wherein the two storage boxes (12) are installed at the left end and the right end of the base (11), the covering nets (13) are connected in the storage boxes (12), the insertion cones (14) are uniformly arranged at the outer ends of the covering nets (13) from left to right, the two clamping frames (15) are installed on the base (11), the two clamping frames (15) are arranged in the front and back direction, and the extrusion blocks (16) are installed in the clamping frames (15);

the positioning unit (2) comprises a cylinder body (21), a conical head (22), an inlet and outlet groove (23) and a transverse positioning mechanism (24), wherein the front end and the rear end of the cylinder body (21) are symmetrically provided with the inlet and outlet groove (23), the transverse positioning mechanism (24) is symmetrically arranged in the cylinder body (21), the transverse positioning mechanism (24) corresponds to the inlet and outlet groove (23), and the lower end of the cylinder body (21) is in threaded fit connection with the conical head (22);

the protective net group (3) comprises a frame (31), a protective net (32), a clamping block (33) and two locking bolts (34), the protective net (32) is installed inside the frame (31), the clamping block (33) is installed at the lower end of the frame (31), and the frame (31) is connected with the base (11) through the two locking bolts (34);

the alarm unit (4) comprises an L-type block (41), an alignment groove (42), a positioning block (43), a frame body (44), an alarm mechanism (45), an increase block (46), a connecting sleeve (47), a linkage mechanism (48) and an extrusion column (49), the extrusion column (49) is installed at the outer end of the L-type block (41), the alignment groove (42) is formed in the L-type block (41), the alignment groove (42) and the extrusion block (16) are arranged vertically and correspondingly, the inner end of the alignment groove (42) is connected with the positioning block (43) in a sliding fit manner, the frame body (44) is installed at the upper end of the L-type block (41), the alarm mechanism (45) is arranged in the frame body (44), the increase block (46) is installed on the inner side of the frame body (44), the connecting sleeve (47) is connected between the increase block (46) and the linkage mechanism (48), and the linkage mechanism (48) is installed;

link gear (48) including sliding plate (481), intermediate lever (482), rust-resistant spring (483), contact plate (484) and conducting block (485), sliding plate (481) is connected for sliding fit with the inside of framework (44), install conducting block (485) on the inner wall of sliding plate (481), the left and right sides of sliding plate (481) is equipped with two rubber blocks, the middle part of sliding plate (481) is equipped with intermediate lever (482), be the round pin hub connection between intermediate lever (482) and contact plate (484), even there is rust-resistant spring (483) between sliding plate (481) and contact plate (484).

2. The early warning type frontier defense guardrail for building construction according to claim 1, characterized in that: the embedded hole has been seted up to base (11) left and right sides both ends symmetry, barrel (21) are located the embedded hole, the screens groove has been seted up at the middle part of base (11), and block into frame (15) and be located between embedded hole and the screens groove, be connected for the embedding between screens piece (33) and the screens groove.

3. The early warning type frontier defense guardrail for building construction according to claim 1, characterized in that: the transverse positioning mechanism (24) comprises a positioning plate (241) and an internal spring (242), the positioning plate (241) is connected with the inlet and outlet groove (23) in a sliding fit mode, and the internal spring (242) is connected between the positioning plate (241) and the inner wall of the cylinder body (21).

4. The early warning type frontier defense guardrail for building construction according to claim 3, characterized in that: the outer wall of the upper end of the cylinder body (21) is provided with a limiting ring, and the outer end of the positioning plate (241) is of a tip structure.

5. The early warning type frontier defense guardrail for building construction according to claim 1, characterized in that: the thickness of the frame (31) is gradually reduced from bottom to top, and inner grooves are formed in the left side and the right side of the lower end of the frame (31).

6. The early warning type frontier defense guardrail for building construction according to claim 1, characterized in that: the outer end face of the positioning block (43) is of a structure which gradually inclines inwards from top to bottom, and a rubber layer is laid on the inner end face of the positioning block (43).

7. The early warning type frontier defense guardrail for building construction according to claim 1, characterized in that: alarm mechanism (45) including removable group battery (451), wire (452), siren (453) and connecting plate (454), be the embedding between the outside of removable group battery (451) and framework (44) and be connected, siren (453) is installed to the lower extreme of framework (44), the internally mounted of framework (44) has connecting plate (454), and passes through wire (452) series connection between removable group battery (451), siren (453) and the connecting plate (454).

8. The early warning type frontier defense guardrail for building construction according to claim 7, characterized in that: the left and right parts of the connecting plate (454) are insulating plates, the middle part of the connecting plate (454) is a conductive plate, and the middle part of the conductive plate is provided with an insertion groove.

9. The early warning type frontier defense guardrail for building construction according to claim 1, characterized in that: the inner wall of the block (46) is provided with a rubber ring with a clip structure, and the inner cavity of the rubber ring gradually expands from bottom to top.

10. The pre-warning type frontier defense guardrail for building construction according to any one of claims 1 to 9, characterized in that: the use method of the early warning type frontier defense guardrail for building construction comprises the following steps;

s1, leveling the soil surface to be installed, placing the base (11) on the leveled soil surface, embedding and connecting the frame (31) and the base (11), and locking the frame (31) and the base (11) through a locking bolt (34);

s2, reversely pulling out the two covering nets (13), and inserting the two pulled-out covering nets (13) into soil through the insertion cone (14), so that the soil on the two sides of the protection net group (3) is covered and blocked, and water and soil loss is prevented;

s3, the positioning unit (2) is inserted into soil in a linkage mode to position the base (11), one L type block (41) is pressed downwards, the transverse positioning mechanism (24) is extruded in an extruding mode to transversely insert and position a soil layer, meanwhile, the positioning block (43) is extruded inwards by the extruding block (16) to abut against one side of the frame (31), the pressed L type block (41) is locked and connected with the base (11) through a connecting piece, and the operation is repeated to press and lock the other L type block (41) downwards, so that the other side of the frame (31) abuts against;

s4, the installation is finished, when the protection net set (3) is in an inclined state after being influenced by the outside, the protection net set (3) is buffered and protected through the linkage mechanism (48), after the inclination angle is large, the pressed conductive block (485) is contacted with the alarm mechanism (45) to form a series circuit, and the alarm mechanism (45) in the series state generates alarm sound to remind a worker to check and maintain.

Technical Field

The invention relates to the field of building construction, in particular to an early warning type frontier defense guardrail for building construction and a use method thereof.

Background

The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. Before excavation, an excavation scheme is determined according to geological and hydrological data and by combining the conditions of buildings nearby the site, waterproof drainage work is performed, and due to the fact that the engineering period is long, a foundation pit or a foundation trench has a certain depth, personnel usually build a protective fence at the side slope of the foundation pit.

Because foundation ditch side slope usually is the soil horizon of ramp type, and the rail guard after putting up directly exposes under external environment, under the impact that heavy rain washed and wind-blown, take place the phenomenon of soil erosion easily, the condition that becomes flexible appears between the insertion end of the rail guard lower extreme of putting up on the side slope side and the soil easily, because personnel can't in time discover, the later stage very easily causes the potential safety hazard, and current rail guard simple structure, when it receives external influence (wind-force, artificial destruction etc.) great, the condition that the slope collapsed can directly appear.

Disclosure of Invention

Technical problem to be solved

The invention can solve the problems that the foundation pit side slope is usually a slope type soil layer, the built protective guard is directly exposed in the external environment, water and soil loss is easy to occur under the impact of heavy rain washing and wind blowing, the loose condition is easy to occur between the insertion end at the lower end of the protective guard built on the side slope and the soil, potential safety hazards are easy to cause in the later period due to the fact that personnel cannot find the protective guard in time, the existing protective guard is simple in structure, and when the existing protective guard is greatly influenced by the outside (wind power, artificial damage and the like), the inclined collapse condition can be directly caused, and the like.

(II) technical scheme

In order to achieve the purpose, the invention adopts the following technical scheme: an early warning type frontier defense guardrail for building construction comprises a base unit, a positioning unit, a protection net group and two alarm units, wherein the positioning unit is symmetrically arranged at the left end and the right end of the base unit, the protection net group is arranged in the middle of the base unit, and the two alarm units are arranged at the left side and the right side of the protection net group;

the base unit include the base, two receivers, two cover nets, insert the awl, two card income frames and two extrusion pieces, two receivers are installed at both ends about the base, the receiver plays the effect of accomodating to cover net, even there is cover net in the receiver, the outer end of cover net turns right from a left side and evenly is equipped with the insertion awl, install two card income frames on the base, and two card income frames are arranged from the front and back, install the extrusion piece in the card income frame, concrete during operation, pull out two cover nets reverse, insert in soil through inserting two cover nets that the awl will pull out, thereby block the soil cover of protection net group both sides, prevent soil erosion and water loss.

The positioning unit comprises a barrel, a conical head, an inlet and outlet groove and a transverse positioning mechanism, the inlet and outlet groove is symmetrically formed in the front end and the rear end of the barrel, the transverse positioning mechanism is symmetrically arranged in the barrel, the transverse positioning mechanism corresponds to the inlet and outlet groove in position, the lower end of the barrel is in threaded fit connection with the conical head, and the situation that soil is difficult to clear in the barrel from the inlet and outlet groove is avoided.

The protective net group comprises a frame, a protective net, a clamping block and two locking bolts, the protective net is arranged inside the frame, the clamping block is arranged at the lower end of the frame, and the frame is connected with the base through the two locking bolts.

The alarm unit comprises an L type block, an alignment groove, a positioning block, a frame body, an alarm mechanism, a reinforcement block, a connecting sleeve, a linkage mechanism and an extrusion column, wherein the extrusion column is installed at the outer end of a L type block, the alignment groove is formed in the L type block, the alignment groove and the extrusion block are arranged in an up-down corresponding mode, the inner end of the alignment groove is connected with the positioning block in a sliding fit mode, the frame body is installed at the upper end of a L type block, the alarm mechanism is arranged in the frame body, the reinforcement block is installed on the inner side of the frame body, the connecting sleeve is connected between the reinforcement block and the linkage mechanism, the connecting sleeve plays a rainproof and dustproof role, the linkage mechanism is prevented from being affected by damp, the linkage mechanism is installed on the frame body, when the alarm unit works, the L type block is pressed downwards into the clamping frame, the positioning block is pressed inwards through the extrusion block to abut against one side of the frame, when the L type block is in contact with the base in a joint mode, the connecting piece locks the reinforcement block, after the alarm unit is assembled, when the protection unit is in an inclined state due to external influence (wind force, artificial damage, the linkage mechanism is pressed, the alarm unit is in series, the alarm unit is prevented from being in a state, the lower end of the alarm mechanism.

The linkage mechanism comprises a sliding plate, an intermediate rod, an antirust spring, a contact plate and a conductive block, wherein the sliding plate is connected with the inside of the frame body in a sliding fit manner, the conductive block is installed on the inner wall of the sliding plate, two rubber blocks are arranged on the left side and the right side of the sliding plate, the intermediate rod is arranged in the middle of the sliding plate, the intermediate rod is connected with the contact plate through a pin shaft, the antirust spring is connected between the sliding plate and the contact plate and plays a role in connection and reset, when the protection net group is in an inclined state due to external influences (wind power, artificial damage and the like), after the inclined frame is contacted with the contact plate, the sliding plate is synchronously inclined so as to extrude the sliding plate, the displacement of the pressed sliding plate is slowed down under the resistance of the block increasing block, when the block is greatly influenced by the outside and is difficult to prevent the displacement of the sliding plate, thereby giving out an alarm sound.

Preferably, the left end and the right end of the base are symmetrically provided with embedding holes, the barrel is positioned in the embedding holes, the middle of the base is provided with clamping grooves, the clamping frames are positioned between the embedding holes and the clamping grooves, and the clamping blocks are connected with the clamping grooves in an embedding manner.

Preferably, the transverse positioning mechanism comprises a positioning plate and an internal spring, the positioning plate is connected with the inlet and outlet groove in a sliding fit mode, and the internal spring is connected between the positioning plate and the inner wall of the barrel.

Preferably, the outer wall of the upper end of the barrel body is provided with a limiting ring, and the outer end of the positioning plate is of a tip structure.

Preferably, the thickness of the frame is gradually reduced from bottom to top, the left side and the right side of the lower end of the frame are provided with inner grooves, the lower portion of each inner groove is of a structure which is gradually inclined inwards, and a rubber layer is laid on the inner end face of each positioning block.

Preferably, the alarm mechanism comprises a detachable battery pack, a wire, an alarm and a connecting plate, the detachable battery pack is connected with the outer side of the frame in an embedded mode, the alarm is installed at the lower end of the frame, the connecting plate is installed inside the frame, and the detachable battery pack, the alarm and the connecting plate are connected in series through the wire.

Preferably, the left and right parts of the connecting plate are insulating plates, the middle part of the connecting plate is a conductive plate, and the middle part of the conductive plate is provided with an insertion groove.

Preferably, the inner wall of the reinforcing block is provided with a rubber ring with a clip structure, and the inner cavity of the rubber ring gradually expands outwards from bottom to top.

In addition, the invention also provides a use method of the early warning type frontier defense guardrail for building construction, which comprises the following steps;

s1, leveling the soil surface to be installed, placing the base on the leveled soil surface, embedding and connecting the frame and the base, and locking the frame and the base through locking bolts;

s2, reversely pulling out the two cover nets, and inserting the two pulled out cover nets into soil through the insertion cone, so that the soil on two sides of the protection net set is covered and blocked, and water and soil loss is prevented;

s3, inserting the positioning units into soil in a linkage mode to position the base, pressing down one L type block, extruding a transverse positioning mechanism in an extruding mode to transversely insert and position the soil layer, meanwhile, extruding the positioning blocks inwards by the extruding block to abut against one side of the frame, locking and connecting the pressed L type block and the base through a connecting piece, and repeating the operation to press down and lock the other L type block to abut against the other side of the frame;

s4, after the installation, when the protection net group is in an inclined state after being influenced by the outside, the protection net group is buffered and protected through the linkage mechanism, after the inclination angle is large, the pressed conductive block is contacted with the alarm mechanism to form a series circuit, and the alarm mechanism in the series state generates alarm sound so as to remind a worker to check and maintain.

(III) advantageous effects

1. The invention relates to an early warning type limb defense guardrail for building construction and a use method thereof, wherein the surface and the inner layer of soil are intercepted and locked by adopting a mesh covering and laying mode and a root hair type inserting mode, so that the effect of preventing water and soil loss is achieved, the inclination trend of a protection net set which is influenced by the outside and has an inclination condition is reduced by buffering and supporting, and meanwhile, personnel are timely reminded to overhaul and replace the protection net set by an alarm sound mode, so that the advance prevention is realized, and the condition of potential safety hazard is avoided;

2. according to the early warning type limb protection guardrail for building construction and the using method, the positioning unit is inserted into soil in a root hair type manner through vertical insertion of the conical head and transverse insertion of the positioning plate, so that root locking of the positioning unit and the soil is facilitated, and the loss rate of slope soil is reduced;

3. the warning unit is connected with the connecting plate in an inserted manner through the conductive block, so that a complete series circuit is formed by a warning mechanism, warning sound is generated, meanwhile, the inclination trend of a protection net group is slowed down in a resistance-increasing manner, and the time for workers to come is given;

4. according to the early warning type limb protection guardrail for building construction and the using method, the soil surface is intercepted through the positioning covering between the covering net and the soil, the water and soil loss is prevented, meanwhile, the two end faces of the framework are designed to be inclined planes, and the influence of wind power on the constructed framework is reduced through reducing wind resistance.

Drawings

The invention is further illustrated with reference to the following figures and examples.

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

FIG. 2 is a cross-sectional view of FIG. 1 of the present invention;

FIG. 3 is a cross-sectional view of a positioning unit of the present invention;

FIG. 4 is a cross-sectional view of the alarm unit of the present invention;

fig. 5 is a schematic view of the present invention installed on the side slope of the foundation pit.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.

The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.

As shown in fig. 1 to 5, the early warning type frontier defense guardrail for building construction comprises a base unit 1, a positioning unit 2, a protection net group 3 and two alarm units 4, wherein the positioning unit 2 is symmetrically arranged at the left end and the right end of the base unit 1, the protection net group 3 is arranged in the middle of the base unit 1, and the two alarm units 4 are arranged at the left side and the right side of the protection net group 3;

base unit 1 include base 11, two receivers 12, two cover net 13, insert awl 14, two card income frames 15 and two extrusion pieces 16, two receivers 12 are installed at both ends about base 11, receiver 12 plays the effect of accomodating to cover net 13, receiver 12 in-connection has cover net 13, cover net 13's outer end is from turning right evenly to be equipped with from a left side and inserts awl 14, install two card income frames 15 on the base 11, and two card income frames 15 arrange around arranging, install extrusion piece 16 in the card income frame 15, concrete during operation, with two cover net 13 reversal pulls out, two cover net 13 that will pull out through inserting awl 14 insert in soil, thereby block the soil covering of 3 both sides of protection net group, prevent soil erosion and water loss.

The both ends symmetry about base 11 seted up the embedding hole, barrel 21 is located the embedding hole, the screens groove has been seted up at the middle part of base 11, and the card is gone into frame 15 and is located between embedding hole and the screens groove, be connected for the embedding between screens piece 33 and the screens groove, the assembled connection does benefit to the maintenance change in midway transportation and later stage.

The positioning unit 2 comprises a cylinder body 21, a conical head 22, an inlet and outlet groove 23 and a transverse positioning mechanism 24, the inlet and outlet groove 23 is symmetrically formed in the front end and the rear end of the cylinder body 21, the transverse positioning mechanism 24 is symmetrically arranged in the cylinder body 21, the transverse positioning mechanism 24 corresponds to the inlet and outlet groove 23 in position, the lower end of the cylinder body 21 is connected with the conical head 22 in a threaded fit mode, and the situation that soil is difficult to clear in the cylinder body 21 from the inlet and outlet groove 23 is avoided.

Transverse positioning mechanism 24 include locating plate 241 and built-in spring 242, be connected for sliding fit between locating plate 241 and the business turn over groove 23, even have built-in spring 242 between locating plate 241 and the barrel 21 inner wall, during specific work, it is interior to block 15 to go into to push down L type piece 41, the extrusion post 49 that descends in step extrudes locating plate 241 backward, thereby insert in the soil, insert perpendicularly through cone 22 and the horizontal insertion of locating plate 241, make to be root hair formula between positioning element 2 and the soil and insert, do benefit to the disk root formula of the two and lock, simultaneously, the rate of loss of slope soil has been reduced.

The upper end outer wall of barrel 21 be equipped with the spacing ring, played spacing effect, the outer end of locating plate 241 is most advanced structure, does benefit to transversely insert in the soil.

The protective net group 3 comprises a frame 31, a protective net 32, a clamping block 33 and two locking bolts 34, the protective net 32 is arranged inside the frame 31, the clamping block 33 is arranged at the lower end of the frame 31, and the frame 31 is connected with the base 11 through the two locking bolts 34.

The thickness of the frame 31 is gradually reduced from bottom to top, so that the front end face and the rear end face of the frame 31 are inclined planes, the wind resistance is reduced due to the inclined plane type design, inner grooves are formed in the left side and the right side of the lower end of the frame 31, and a working area is provided for the locking bolt 34 to work.

The alarm unit 4 comprises an L-shaped block 41, an alignment groove 42, a positioning block 43, a frame body 44, an alarm mechanism 45, an increasing block 46, a connecting sleeve 47, a linkage mechanism 48 and an extrusion column 49, the extrusion column 49 is installed at the outer end of the L-shaped block 41, the alignment groove 42 is formed in the L-shaped block 41, the alignment groove 42 and the extrusion block 16 are arranged up and down correspondingly, the inner end of the alignment groove 42 is connected with the positioning block 43 in a sliding fit mode, the frame body 44 is installed at the upper end of the L-shaped block 41, the alarm mechanism 45 is arranged in the frame body 44, the increasing block 46 is installed on the inner side of the frame body 44, the connecting sleeve 47 is connected between the increasing block 46 and the linkage mechanism 48, the connecting sleeve 47 is arranged to play a role in resisting rain and dust, the linkage mechanism 48 is prevented from being affected by damp, the linkage mechanism 48 is installed on the frame body 44, during specific work, the L-shaped block 41 is pressed down to the frame 15, the positioning block 43 is pressed to the inner side by the extrusion block 16 to press the inner side, so that one side of the positioning block 43 is pressed to the inner side when the L-shaped block 41 is in contact with the base 11, when the base 11 is in contact, the working, the alarm mechanism is blocked in a working state, the alarm mechanism is blocked.

The linkage mechanism 48 comprises a sliding plate 481, a middle rod 482, an anti-rust spring 483, a contact plate 484 and a conductive block 485, wherein the sliding plate 481 is connected with the inside of the frame body 44 in a sliding fit manner, the conductive block 485 is installed on the inner wall of the sliding plate 481, two rubber blocks are arranged on the left side and the right side of the sliding plate 481, the middle rod 482 is arranged at the middle part of the sliding plate 481, the middle rod 482 is connected with the contact plate 484 by a pin shaft, the anti-rust spring 483 is connected between the sliding plate 481 and the contact plate 484, and the anti-rust spring 483 plays a role in connection and return, in specific work, when the protection net group 3 is in an inclined state due to external influences (wind power, artificial damage and the like), the inclined frame 31 is in contact with the contact plate 484 and then synchronously inclines to press the contact plate 481, the pressed sliding plate 481 slows down displacement under the resistance of the block 46, the conductive block 485 on the pressed sliding plate 481 contacts the connecting plate 454, so that the alarm mechanism 45 is in a series circuit, thereby generating an alarm sound.

The outer end face of the positioning block 43 is of a structure which gradually inclines inwards from top to bottom, so that the extrusion difficulty is reduced, the rubber layer is paved on the inner end face of the positioning block 43, the effect of buffering and protecting the frame 31 is achieved, and meanwhile the abrasion degree of the surface of the frame 31 is reduced.

The alarm mechanism 45 comprises a detachable battery pack 451, a wire 452, an alarm 453 and a connecting plate 454, the detachable battery pack 451 is connected with the outer side of the frame 44 in an embedded manner, the alarm 453 is mounted at the lower end of the frame 44, the connecting plate 454 is mounted in the frame 44, and the detachable battery pack 451, the alarm 453 and the connecting plate 454 are connected in series through the wire 452.

The left and right parts of the connecting plate 454 are insulating plates, the middle part of the connecting plate 454 is a conductive plate, the middle part of the conductive plate is provided with an insertion groove, and when the conductive block 485 is inserted into the insertion groove, the alarm mechanism 45 forms a complete series circuit, so that alarm sound is generated.

The inner wall of the resistance increasing block 46 is provided with a rubber ring with a clip structure, and the inner cavity of the rubber ring gradually expands outwards from bottom to top, so that the resistance increasing effect is achieved.

In addition, the invention also provides a use method of the early warning type frontier defense guardrail for building construction, which comprises the following steps;

s1, leveling the soil surface to be installed, placing the base 11 on the leveled soil surface, embedding and connecting the frame 31 and the base 11, and locking the frame 31 and the base 11 through the locking bolt 34;

s2, reversely pulling out the two cover nets 13, and inserting the two pulled out cover nets 13 into soil through the insertion cone 14, so that the soil on two sides of the protection net group 3 is covered and blocked, and water and soil loss is prevented;

s3, inserting the positioning unit 2 into soil in a linkage manner to position the base 11, pressing down one L-shaped block 41, extruding the transverse positioning mechanism 24 in an extruding manner to transversely insert and position a soil layer, meanwhile, extruding the positioning block 43 inwards by the extruding block 16 to abut against one side of the frame 31, locking and connecting the pressed L-shaped block 41 with the base 11 through a connecting piece, and repeating the operation to press down and lock the other L-shaped block 41 to abut against the other side of the frame 31;

s4, the installation is finished, when the protection net group 3 is in the inclined state after being influenced by the outside, the protection net group 3 is buffered and protected through the linkage mechanism 48, after the inclination angle is large, the pressed conductive block 485 is contacted with the alarm mechanism 45 to form a series circuit, and the alarm mechanism 45 in the series state generates alarm sound so as to remind a worker to check and maintain.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.