CN110886500B - Construction method of height-adjustable safety barrier device - Google Patents
Construction method of height-adjustable safety barrier device Download PDFInfo
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- CN110886500B CN110886500B CN201911104096.5A CN201911104096A CN110886500B CN 110886500 B CN110886500 B CN 110886500B CN 201911104096 A CN201911104096 A CN 201911104096A CN 110886500 B CN110886500 B CN 110886500B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
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Abstract
The invention provides a construction method of a height-adjustable safety guardrail device, which is characterized in that a protective guardrail and a guardrail height locking mechanism are arranged between adjacent fixed stand columns, the protective guardrail comprises a fixed guardrail and a movable guardrail, the movable guardrail comprises a movable guardrail upper rail, a middle cross rod and a plurality of connecting rods, the middle cross rod is positioned between the movable guardrail upper rail and the fixed guardrail, the movable guardrail upper rail and the middle cross rod and the fixed guardrail and the middle cross rod are respectively provided with the plurality of parallel connecting rods in a hinged mode, the height of the movable guardrail can be adjusted as required, when the foundation pit edge, the trestle and the like are subjected to soil taking, soil digging and other operations, the guardrail-free edge operation state is effectively avoided, and the safety risk of edge operation is reduced. In addition, the connecting rod is obviously shortened by additionally arranging the middle cross rod, the movable guardrail does not need to be folded by means of lateral spaces at two ends of the movable guardrail, the strength of the movable guardrail can be improved, and the height of the movable guardrail can be increased.
Description
Technical Field
The invention relates to the field of safety protection, in particular to a construction method of a height-adjustable safety guardrail device.
Background
The protective railing on the edge of the foundation pit in the construction site is generally erected in a steel pipe fastener mode, a civilized construction standard is higher than a certain standard, a formed product is adopted, the height of the guardrail is about 1.2-1.8 m, a fixed height mode is adopted, and daily common protection can be basically met.
But when having operations such as borrow, dig earth to on foundation ditch limit, landing stage, fixed high formula railing often leads to the installed railing to be demolishd because of the guardrail bar height can hinder mechanical equipment normal use, causes the safeguard measure disappearance at this position, and the high altitude faces limit safety risk greatly increased. According to incomplete statistics, the safety accidents caused by the high-altitude side of the national building engineering safety death accidents account for more than 50 percent.
Therefore, how to provide a simple and convenient, height-adjustable, but reuse's safety barrier device with adjustable height's construction method, effectively solve because of mechanical equipment operation needs reduce railing height temporarily, the railing that reduces in the operation process can keep the guardrail effect, can be fast, convenient afterwards again, resume railing normal height safely, effectively avoid not having the guardrail and face limit operating condition, reduce and face limit operation safety risk, become the technical problem that the building construction field need further perfect the optimization.
Disclosure of Invention
The invention aims to provide a construction method of a height-adjustable safety guardrail device, which effectively solves the problems that the height of a guardrail is temporarily reduced due to the operation requirement of mechanical equipment, the lowered guardrail can keep the effect of the guardrail in the operation process, and the normal height of the guardrail can be quickly, conveniently and safely recovered afterwards. Effectively avoid no guardrail to face limit operation state, reduce and face limit operation safety risk.
In order to solve the technical problems, the invention provides the following technical scheme:
a construction method of a height-adjustable safety barrier device comprises a protective barrier and a barrier height locking mechanism which are arranged between adjacent fixed upright posts, wherein the protective barrier comprises a fixed barrier and a movable barrier, the movable barrier is arranged above the fixed barrier, the height of the movable barrier can be adjusted, the barrier height locking mechanism can lock the movable barrier on the fixed upright posts so that the movable barrier keeps a required height position, the movable barrier comprises a movable barrier upper rail, a middle cross rod and a plurality of connecting rods, the middle cross rod is positioned between the movable barrier upper rail and the fixed barrier, a plurality of parallel connecting rods are respectively arranged between the movable barrier upper rail and the middle cross rod and between the fixed barrier and the middle cross rod in a hinging manner, and the upper and lower adjacent connecting rods are hinged at the same position of the middle cross rod, the connecting rods which are adjacent up and down and the plumb line form an isosceles triangle or are collinear with the plumb line, and the construction method comprises the following steps:
Firstly, mounting a height-adjustable safety barrier device on a workplace;
secondly, loosening the guardrail height locking mechanism and adjusting the height of the movable guardrail according to the requirement;
and thirdly, locking a guardrail height locking mechanism, and locking the movable guardrail on the fixed upright post so that the movable guardrail keeps the required height position.
Preferably, in the construction method of the height-adjustable safety barrier device, the movable guardrail comprises more than two middle cross rods, the more than two middle cross rods are arranged between the movable guardrail upper gear and the fixed guardrail at equal intervals, a plurality of parallel connecting rods are respectively arranged between the movable guardrail upper gear and the adjacent middle cross rods, between the adjacent middle cross rods and between the fixed guardrail and the adjacent middle cross rods in a hinging manner, the vertically adjacent connecting rods are hinged at the same position of the middle cross rods, and the vertically adjacent connecting rods and the plumb lines form an isosceles triangle or are collinear with each other.
Preferably, in the construction method of the height-adjustable safety barrier device, the barrier height locking mechanism comprises a bolt and a nut, the fixed column is provided with a vertical chute, the movable barrier upper rail is provided with a through hole for a bolt rod of the bolt to pass through, and the bolt rod of the bolt passes through the vertical chute of the fixed column and the through hole of the movable barrier upper rail in sequence and then is locked by the nut.
Preferably, in the construction method of the height-adjustable safety barrier device, the movable barrier upper rail is a channel steel, the channel steel comprises a groove bottom and two side walls, and the opening of the movable barrier upper rail is arranged downwards.
Preferably, in the construction method of the height-adjustable safety barrier device, the fixed upright column is a channel steel, the channel steel comprises a groove bottom and two side walls, the groove bottom of the fixed upright column is arranged facing the upper stop of the movable barrier, and the vertical sliding groove is formed in the groove bottom of the fixed upright column.
Preferably, in the construction method of the height-adjustable safety barrier device, the movable barrier upper rail is a channel steel, the channel steel comprises a groove bottom and two side walls, the movable barrier upper rail is provided with an opening facing downwards, the fixed barrier comprises a fixed barrier upper rail, the fixed barrier upper rail comprises a base and a bulge, the bulge is arranged above the middle part of the base, the lower end of the connecting rod adjacent to the fixed barrier and the bulge are correspondingly provided with through holes for arranging pin shafts, the lower end of the connecting rod is arranged outside the bulge through a pin shaft, the two side walls of the movable barrier upper rail are correspondingly provided with through holes for arranging pin shafts, the upper end of the connecting rod adjacent to the movable barrier upper rail is provided with a through hole for arranging pin shafts, the upper end of the connecting rod is arranged at the inner side of the side wall of the movable barrier upper rail through a pin shaft, when the movable guardrail upper gear is adjusted to the lowest state, the movable guardrail upper gear can cover the fixed guardrail upper gear, and the connecting rod and the pin shaft are located in a space defined by the movable guardrail upper gear and the fixed guardrail upper gear.
Preferably, in the construction method of the safety barrier device with an adjustable height, two rows of connecting rods adjacent to the fixed barrier are respectively located at two sides of the protrusion.
Preferably, in the construction method of the height-adjustable safety barrier device, the barrier height locking mechanism comprises a lead screw, a nut and a rotation stopping block, the fixed column is provided with a vertical chute, the movable barrier is provided with a through hole for a bolt rod of a bolt to pass through, one end of the lead screw is fixedly connected with the rotation stopping block, the other end of the lead screw sequentially passes through the vertical chute of the fixed column and the through hole of the movable barrier upper stop and then is fixed by the nut, the rotation stopping block is located inside the fixed column, and the fixed column can limit the rotation stopping block to rotate around the axial lead of the lead screw inside the fixed column.
Preferably, in the construction method of the height-adjustable safety barrier device, the rotation stopping block is a vertically arranged rectangular block, and the size of the rotation stopping block satisfies the following requirements: and L < ═ B-4, wherein L represents the diagonal size of the rotation stopping block, A represents the transverse width of the rotation stopping block, and B represents the distance between the inner walls of the two side surfaces adjacent to the surface provided with the vertical sliding chute on the fixed upright post.
According to the technical scheme disclosed above, compared with the prior art, the invention has the following beneficial effects:
the construction method of the height-adjustable safety guardrail device has the advantages of simplicity, convenience, height adjustment and reusability, and the height of the safety guardrail device can be adjusted as required by adopting the protective guardrail and the guardrail height locking mechanism which are arranged between adjacent fixed upright posts, wherein the protective guardrail comprises the fixed guardrail and the movable guardrail, the movable guardrail is arranged above the fixed guardrail, and the height of the movable guardrail can be adjusted as required; in the operation process of mechanical equipment, the movable guardrail with the reduced height can still keep the function of the guardrail; after the mechanical equipment operation, can resume activity guardrail normal height fast, convenient, safely again to effectively avoid no guardrail to face limit operation state, reduce and face limit operation safety risk.
In addition, the connecting rod between the upper rail of the movable guardrail and the fixed guardrail is divided by the middle cross rod, so that the connecting rod is obviously shortened, and the folding by the aid of lateral spaces at two ends of the movable guardrail is not needed, and the structure of the peripheral guardrail is not influenced. In addition, the strength of the movable guardrail can be improved by additionally arranging the middle cross rod, so that the height of the movable guardrail can be increased, and the application range of the construction method of the height-adjustable safety guardrail device is further enlarged. Moreover, because will connecting rod utilizes middle horizontal pole to cut apart between movable guardrail upper rail and the fixed guardrail, need not fold with the help of the side direction space at movable guardrail both ends, consequently, need not set up horizontal spout at movable guardrail upper rail, only need set up the through-hole can.
Drawings
Fig. 1 is a schematic structural view illustrating a construction method of a height-adjustable safety barrier device according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a guardrail height locking mechanism according to a first embodiment of the invention;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a schematic view of a connecting rod according to one embodiment of the present invention;
FIG. 5 is a second schematic view illustrating the installation of the connecting rod according to the first embodiment of the present invention;
FIG. 6 is a schematic view of a folded movable guard rail according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a guardrail height locking mechanism in a second embodiment of the invention;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a cross-sectional view taken along line 1-1 of FIG. 8;
FIG. 10 is a schematic view of the rotation restriction of the stop block by the fixed post.
In the figure: 1-fixed upright post, 11-vertical chute, 2-fixed guardrail, 21-fixed guardrail upper stop, 211-base, 212-protrusion, 22-fixed guardrail vertical rod, 3-movable guardrail, 31-movable guardrail upper stop, 32-connecting rod, 33-pin shaft, 34-middle cross rod, 4-guardrail height locking mechanism, 41-bolt, 42-nut, 43-hand wheel, 44-screw rod and 45-rotation stopping block.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments. The technical contents and features of the present invention will be described in detail below with reference to the embodiments illustrated in the accompanying drawings. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Referring to fig. 1 to 6, the invention provides a construction method of a height-adjustable safety barrier device, the height-adjustable safety barrier device comprises a protective barrier and a barrier height locking mechanism 4, the protective barrier comprises a fixed barrier 2 and a movable barrier 3, the movable barrier 3 is arranged above the fixed barrier 2, the height of the movable barrier 3 can be adjusted, the barrier height locking mechanism 4 can lock the movable barrier 3 on the fixed column 1, so that the movable barrier 3 keeps a required height position, the movable barrier 3 comprises a movable barrier upper rail 31, a middle cross bar 34 and a plurality of connecting rods 32, the middle cross bar 34 is positioned between the movable barrier upper rail 31 and the fixed barrier 2, and a plurality of parallel connecting rods are respectively arranged between the movable barrier upper rail 31 and the middle cross bar 34 and between the fixed barrier 2 and the middle cross bar 34 in a hinged manner 32, the connecting rods 32 which are adjacent up and down are hinged at the same position of the middle cross rod 34, the connecting rods 32 which are adjacent up and down and the plumb line form an isosceles triangle or are collinear with the plumb line, and the construction method comprises the following steps:
Firstly, mounting a height-adjustable safety barrier device on a workplace;
secondly, loosening the guardrail height locking mechanism 4, and adjusting the height of the movable guardrail 3 according to the requirement;
and thirdly, locking a guardrail height locking mechanism 4 to lock the movable guardrail 3 on the fixed upright post 1, so that the movable guardrail 3 keeps the required height position.
The construction method of the height-adjustable safety guardrail device has the advantages of simplicity, convenience, height adjustment and reusability, and by adopting the protective guardrails arranged between the adjacent fixed upright posts 1 and the guardrail height locking mechanisms 4, the protective guardrails comprise the fixed guardrails 2 and the movable guardrails 3, the movable guardrails 3 are arranged above the fixed guardrails 2, the height of the movable guardrails 3 can be adjusted according to needs, when the operations such as soil taking, soil digging and the like are carried out on the sides of foundation pits and trestles, the installed guardrail device is not required to be detached for providing an operation space for normal use of mechanical equipment, and only when the movable guardrails 3 are required to be lowered to the required height, the movable guardrails 3 can be locked on the fixed upright posts 1 by using the guardrail height locking mechanisms 4; in the operation process of mechanical equipment, the movable guardrail 3 with the reduced height can still keep the function of the guardrail; after the mechanical equipment operation is finished, the normal height of the movable guardrail 3 can be quickly, conveniently and safely recovered, so that the condition that no guardrail faces the edge operation is effectively avoided, and the safety risk of the edge operation is reduced. The movable guardrail 3 adopts movable guardrail to go up shelves 31, middle horizontal pole 34 and a plurality of connecting rod 32, middle horizontal pole 34 is located movable guardrail goes up shelves 31 and fixed guardrail 2 between for movable guardrail 3 has stronger intensity, be equipped with a plurality of connecting rods 32 that parallel through the articulated mode respectively between shelves 31 and middle horizontal pole 34 and between fixed guardrail 2 and the middle horizontal pole 34 on the movable guardrail, upper and lower adjacent connecting rod 32 articulates in the same department of middle horizontal pole 34, and upper and lower adjacent connecting rod 32 constitutes an isosceles triangle or collineation in plumb line with the plumb line, makes movable guardrail folds up the convenience from top to bottom.
In addition, the connecting rod 32 between the movable guardrail upper rail 31 and the fixed guardrail 2 is divided by the middle cross rod 34, so that the connecting rod 32 is obviously shortened, and therefore, the folding by the aid of lateral spaces at two ends of the movable guardrail 3 is not needed, and the structure of the peripheral guardrail is not influenced. In addition, the strength of the movable guardrail 3 can be improved by additionally arranging the middle cross rod 34, so that the height of the movable guardrail 3 can be increased, and the construction method application range of the height-adjustable safety guardrail device is further improved. Moreover, because will connecting rod 32 utilizes middle horizontal pole 34 to cut apart between movable guardrail last shelves 31 and the fixed guardrail 2, need not fold with the help of the lateral space at 3 both ends of movable guardrail, consequently, need not set up horizontal spout at movable guardrail last shelves 31, only need set up the through-hole can.
Preferably, in the construction method of the height-adjustable safety barrier device, the barrier height locking mechanism 4 includes a bolt 41 and a nut 42, the fixed column 1 is provided with a vertical sliding groove 11, the movable barrier upper rail 31 is provided with a through hole for a bolt rod of the bolt 41 to pass through, and the bolt 41 rod of the bolt 41 sequentially passes through the vertical sliding groove 11 of the fixed column 1 and the through hole of the movable barrier upper rail 31 and then is locked by the nut 42. By adopting the guardrail height locking mechanism 4 with the structure, the bolt 41 and the nut 42 can move along the vertical sliding groove 11 in a loosening state, so that the movable guardrail 3 can realize stepless adjustment, the height setting requirements of guardrail devices under different working conditions are met, and the adjustment is very convenient.
Preferably, in the construction method of the height adjustable safety barrier device, a hand-held wheel 43 is arranged at the outer side of the nut 42 to facilitate the rotation of the nut 42 by a constructor.
Preferably, in the construction method of the height-adjustable safety barrier device, the movable barrier upper rail 31 is a channel steel, the channel steel comprises a groove bottom and two side walls, and the movable barrier upper rail 31 is provided with a downward opening. The fixed stand 1 adopts the channel-section steel, the channel-section steel includes tank bottom and both sides wall, fixed stand 1 the tank bottom towards movable guardrail shelves 31 sets up on, fixed stand 1 set up on the tank bottom vertical spout 11.
Preferably, in the construction method of the height-adjustable safety barrier device, the movable guardrail upper rail 31 is made of a channel steel, the channel steel comprises a groove bottom and two side walls, the movable guardrail upper rail 31 is arranged with a downward opening, the fixed guardrail 2 comprises a fixed guardrail upper rail 21, the fixed guardrail upper rail 21 comprises a base 211 and a protrusion 212, the protrusion 212 is arranged above the middle part of the base 211, through holes for arranging the pin shaft 33 are correspondingly arranged at the lower end of the connecting rod 32 adjacent to the fixed guardrail 2 and the protrusion 212, the lower end of the connecting rod 32 is arranged outside the protrusion 212 through the pin shaft 33, through holes for arranging the pin shaft 33 are correspondingly arranged on the two side walls of the movable guardrail upper rail 31, through holes for arranging the pin shaft 33 are arranged at the upper end of the connecting rod 32 adjacent to the movable guardrail upper rail 31, the upper end of the connecting rod 32 is arranged inside the side walls of the movable guardrail upper rail through the pin shaft 33, when the movable guardrail upper rail 31 is adjusted to the lowest state, the movable guardrail upper rail 31 can cover the fixed guardrail upper rail 21, and the connecting rod 32 and the pin 33 are located in a space surrounded by the movable guardrail upper rail 31 and the fixed guardrail upper rail 21. Therefore, the connecting rod 32 and the pin shaft 33 can be concealed and protected, particularly in the soil excavation process, the condition that soil in the excavator bucket falls into the construction method of the height-adjustable safety barrier device can be effectively avoided, and the reliable operation of the construction method of the height-adjustable safety barrier device is guaranteed; meanwhile, the rigidity of the top of the construction method of the height-adjustable safety barrier device can be effectively enhanced, and deformation damage caused by equipment collision in the construction method of the height-adjustable safety barrier device is reduced.
Preferably, in the construction method of the height-adjustable safety barrier device, the two rows of the connecting rods 32 are respectively arranged at two sides of the protrusion 212, so that the connection strength between the movable guardrail upper rail 31 and the fixed guardrail upper rail 21 can be improved, the overall strength of the construction method of the height-adjustable safety barrier device is improved, and the stress performance of the construction method of the height-adjustable safety barrier device in the lateral direction is improved.
Preferably, in the construction method of the height-adjustable safety barrier device, the through hole of the movable guardrail upper rail 31 is located above the joint of the movable guardrail upper rail 31 and the adjacent connecting rod 32, that is, the through hole of the movable guardrail upper rail 31 is located above the hinge pin of the movable guardrail upper rail 31 and the adjacent connecting rod, so that the two do not affect the respective functions of the two.
When the movable guardrail 3 is higher, in order to ensure that the movable guardrail 3 has enough strength, more than two middle cross rods 34 are additionally arranged in the construction method of the height-adjustable safety guardrail device, that is, the movable guardrail 3 comprises more than two middle cross rods 34, the more than two middle cross rods 34 are arranged between the movable guardrail upper rail 31 and the fixed guardrail 2 at equal intervals, a plurality of parallel connecting rods 32 are respectively arranged between the movable guardrail upper rail 31 and the adjacent middle cross rods 34, between the adjacent middle cross rods 34 and between the fixed guardrail 2 and the adjacent middle cross rods 34 in a hinged mode, the upper and lower adjacent connecting rods 32 are hinged at the same position of the middle cross rods 34, and the upper and lower adjacent connecting rods 32 and the plumb line form an isosceles triangle or are collinear with the plumb line.
Example two
Referring to fig. 7 to fig. 10, the difference between the present embodiment and the first embodiment is:
guardrail height locking mechanical system includes lead screw 44, nut 42 and end commentaries on classics piece 45, set up vertical spout 11 on the stationary mast, movable guardrail goes up shelves 31 and is equipped with the through-hole that supplies bolt 41's shank of bolt to pass through, the one end of lead screw 44 with end commentaries on classics piece 45 fixed connection, the other end of lead screw 44 is worn in proper order behind the vertical spout 11 of stationary mast 1, the movable guardrail through-hole of shelves 31 the nut 42 is fixed, end commentaries on classics piece 45 is located stationary mast 1's inside, stationary mast 1 can restrict end commentaries on classics piece 45 rotates at the inside axial lead of lead screw 44 of stationary mast 1.
The rotation stopping block, on the one hand, can be used as a limiting device for preventing the screw rod 44 from sliding out of the vertical sliding groove, namely, limiting the transverse movement of the screw rod 44. On the other hand, when the nut is screwed, because the fixed column can limit the rotation of the rotation stopping block 45 around the axial lead of the lead screw 44 in the fixed column 1, the nut which is rotated at this time will make the nut move along the lead screw 44, when the nut 42 moves on the lead screw 44 to the rotation stopping block 45, the movable guardrail upper stop 31 is locked on the fixed column 1, and when the nut moves on the lead screw 44 away from the rotation stopping block 45, the movable guardrail upper stop 31 is loosened from the fixed column 1.
In order to facilitate the placement of the rotation stopping block 45 into the fixed column and to achieve the function that the fixed column 1 can limit the rotation of the rotation stopping block 45 around the axis of the screw 44 inside the fixed column 1, preferably, in the construction method of the height-adjustable safety barrier device, the rotation stopping block 45 is a vertically-arranged rectangular block, and the size of the rotation stopping block 45 satisfies the following requirement: and L < ═ B-4, wherein L represents the diagonal size of the rotation stopping block 45, A represents the transverse width of the rotation stopping block 45, and B represents the distance between the inner walls of the two side surfaces of the fixed upright 1 adjacent to the surface provided with the vertical sliding chute. When the nut 42 is screwed, the screw rod 44 is driven to rotate firstly, the screw rod 44 rotates to drive the rotation stopping block 45 to rotate around the center of the screw rod 44, because the overall dimension of the rotation stopping block meets the above condition, when the rotation stopping block 45 rotates to a certain angle, the square corner of the rotation stopping block 45 rotates to the inner wall of the fixed upright post 1, so as to limit the rotation stopping block to rotate continuously, and further limit the rotation of the screw rod 44, at the moment, the nut 42 moves along the screw rod 44 by rotating the nut 42, when the nut 42 moves on the screw rod 44 to the rotation stopping block 45, the movable guardrail upper stop 31 is locked on the fixed upright post 1, when the nut 42 moves on the screw rod 44 away from the rotation stopping block 45, the movable guardrail upper stop 31 is loosened from the fixed upright post 1, that is to say, when the nut 42 is tightened along the inside of the screw rod 44, the movable guardrail upper stop 31 is fixed, and when the nut 42 is loosened along the outside of the screw rod 44, playing the role of relaxing the movable guardrail upper stop 31.
In addition, in this embodiment, owing to can stop the rotation of piece 45 through stationary mast 1 limit, do not need constructor to remove lead screw 44, consequently, stationary mast 1 can also choose for use the square steel except choosing for the channel-section steel to provide the stability that effectively improves stationary mast 1, and then promote the reliability of the construction method of whole height-adjustable safety barrier device.
The construction method of the height-adjustable safety guardrail device has the advantages of simplicity, convenience, height adjustment and reusability, and the height of the safety guardrail device can be adjusted as required by adopting the protective guardrails arranged between the adjacent fixed upright posts 1 and the guardrail height locking mechanisms 4, wherein the protective guardrails comprise the fixed guardrails 2 and the movable guardrails 3, the movable guardrails 3 are arranged above the fixed guardrails 2, and the height of the movable guardrails 3 can be adjusted as required, so that when soil taking, soil excavation and other operations are carried out on the sides of foundation pits and trestles, the installed guardrail device does not need to be dismantled for providing an operation space for normal use of mechanical equipment, and only when the movable guardrails 3 are required to be reduced to the required height, the movable guardrails 3 can be locked on the fixed upright posts 1 by using the guardrail height locking mechanisms 4; in the operation process of mechanical equipment, the movable guardrail 3 with the reduced height can still keep the function of the guardrail; after the mechanical equipment operation, can restore 3 normal height of movable guardrail fast, convenient, safety again to effectively avoid no guardrail to face limit operation state, reduce and face limit operation safety risk.
The construction method of the height-adjustable safety guardrail device has the advantages of simplicity, convenience, height adjustment and reusability, and the height of the safety guardrail device can be adjusted as required by adopting the protective guardrails arranged between the adjacent fixed upright posts 1 and the guardrail height locking mechanisms 4, wherein the protective guardrails comprise the fixed guardrails 2 and the movable guardrails 3, the movable guardrails 3 are arranged above the fixed guardrails 2, and the height of the movable guardrails 3 can be adjusted as required, so that when soil taking, soil excavation and other operations are carried out on the sides of foundation pits and trestles, the installed guardrail device does not need to be dismantled for providing an operation space for normal use of mechanical equipment, and only when the movable guardrails 3 are required to be reduced to the required height, the movable guardrails 3 can be locked on the fixed upright posts 1 by using the guardrail height locking mechanisms 4; in the operation process of mechanical equipment, the movable guardrail 3 with the reduced height can still keep the function of the guardrail; after the mechanical equipment operation, can restore 3 normal height of movable guardrail fast, convenient, safety again to effectively avoid no guardrail to face limit operation state, reduce and face limit operation safety risk.
The above description is only for the purpose of describing the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are intended to fall within the scope of the appended claims.
Claims (4)
1. A construction method of a height-adjustable safety barrier device is characterized by comprising a protective barrier and a barrier height locking mechanism which are arranged between adjacent fixed upright posts, wherein the protective barrier comprises a fixed barrier and a movable barrier, the movable barrier is arranged above the fixed barrier, the height of the movable barrier can be adjusted, the barrier height locking mechanism can lock the movable barrier on the fixed upright posts so that the movable barrier keeps a required height position, the movable barrier comprises a movable barrier upper rail, a middle cross rod and a plurality of connecting rods, the middle cross rod is positioned between the movable barrier upper rail and the fixed barrier, the movable barrier upper rail and the middle cross rod and the fixed barrier and the middle cross rod are respectively provided with a plurality of parallel connecting rods in a hinging mode, and the upper and lower adjacent connecting rods are hinged at the same position of the middle cross rod, the connecting rods which are adjacent up and down and the plumb line form an isosceles triangle or are collinear with the plumb line, and the construction method comprises the following steps:
firstly, mounting a height-adjustable safety barrier device on a workplace;
second step, loosen guardrail height locking mechanical system, the height of adjustment movable guardrail as required, guardrail height locking mechanical system includes lead screw, nut and the piece that splines, set up vertical spout on the stationary mast, the movable guardrail shelves is equipped with the through-hole that the shank of bolt that supplies the bolt passed through on, the one end of lead screw with the piece fixed connection that splines, the other end of lead screw is worn in proper order behind the through-hole of the vertical spout of stationary mast, movable guardrail shelves that splines via the nut is fixed, the piece that splines is located the inside of stationary mast, the stationary mast can restrict the piece that splines rotates at the inside axial lead wire around the lead screw of stationary mast, the piece that splines is the rectangular piece of a vertical setting, the size of the piece that splines satisfies: l > = B +4 and A < = B-4, wherein L represents the diagonal dimension of the rotation stopping block, A represents the transverse width of the rotation stopping block, and B represents the distance between the inner walls of two side faces, adjacent to the surface provided with the vertical sliding groove, of the fixed stand column;
Locking a guardrail height locking mechanism, and locking the movable guardrail on the fixed upright post to keep the movable guardrail at a required height position;
the movable guardrail upper rail adopts a channel steel, the channel steel comprises a groove bottom and two side walls, the opening of the movable guardrail upper rail is arranged downwards, the fixed guardrail comprises a fixed guardrail upper rail, the fixed guardrail upper rail comprises a base and a bulge, the bulge is arranged above the middle part of the base, the lower end of the connecting rod adjacent to the fixed guardrail and the bulge are correspondingly provided with through holes for arranging pin shafts, the lower end of the connecting rod is arranged at the outer side of the bulge through the pin shaft, the two side walls of the movable guardrail upper rail are correspondingly provided with the through holes for arranging the pin shafts, the upper end of the connecting rod adjacent to the movable guardrail upper rail is provided with the through hole for arranging the pin shaft, the upper end of the connecting rod is arranged at the inner side of the side wall of the movable guardrail upper rail through the pin shaft, when the movable guardrail upper rail is adjusted to the lowest state, the movable guardrail upper rail can cover the fixed guardrail upper rail, the connecting rod and the pin shaft are positioned in a space enclosed by the upper gear of the movable guardrail and the upper gear of the fixed guardrail.
2. The construction method of the height adjustable safety barrier device according to claim 1, wherein the movable guard bar comprises more than two middle cross bars, the more than two middle cross bars are arranged between the movable guard bar and the fixed guard bar at equal intervals, a plurality of parallel connecting rods are respectively arranged between the movable guard bar and the adjacent middle cross bars, between the adjacent middle cross bars and between the fixed guard bar and the adjacent middle cross bars in a hinged manner, the vertically adjacent connecting rods are hinged at the same position of the middle cross bars, and the vertically adjacent connecting rods and the plumb line form an isosceles triangle or are collinear with the plumb line.
3. The construction method of the height-adjustable safety barrier device according to claim 1, wherein the fixed upright is a channel steel, the channel steel comprises a groove bottom and two side walls, the groove bottom of the fixed upright is arranged facing the upper rail of the movable barrier, and the vertical sliding groove is formed in the groove bottom of the fixed upright.
4. The method of constructing a height adjustable safety barrier device according to claim 1, wherein there are two rows of connecting rods adjacent to the fixed barrier, one on each side of the projection.
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