CN206942109U - One kind is without special bracket and the protection support body of encorbelmenting of off-load industrialization security protection - Google Patents

Abstract

A special cantilever bracket and protective frame body for non-unloading industrial safety protection. The cantilever bracket is a triangular steel cantilever frame, which is connected from the end to the end by three angle steels, and the oval holes of the wall-attached rods are provided with wall-through bolts. Fixed with the structural wall; at least two L-shaped limit steel bars are welded on the wall-mounted rod, which are respectively clamped on the upper and lower sides of the wall-through bolt; one end of the L-shaped limit steel bar is vertically welded to the vertical structural wall of the wall-mounted rod The angle steel plate on one side is vertically welded on the angle steel plate close to the side of the structural wall at the other end; the free spacer is set in the space between the limit steel bar and the wall stick. The wall-through bolt passes through the through hole and the oval hole in the center of the free spacer at the same time; a reinforcing web is also arranged between the upper and lower chords. 6-8 layers of double-row external protective scaffolding shall be erected above the triangular steel cantilever frame, and its height shall not exceed 18m. The utility model has the advantages of simple structure and convenient operation, which saves construction period and reduces engineering cost, and has safe and reliable construction and wide applicability.

Description

A special cantilever bracket and protective frame body for non-unloading industrial safety protection

technical field

The utility model relates to the technical field of scaffolding and cantilevered scaffolding construction, in particular to a cantilevered bracket and a protective frame body specially used for non-unloading industrialized safety protection, which are suitable for assembly-type structure construction.

Background technique

The resettlement housing project is one of the important livelihood projects in China at present. It adopts a partially assembled structure with novel construction techniques. In the construction process of prefabricated structures, it is often necessary to erect cantilevered scaffolding. Traditional external protective cantilevered scaffolding uses I-shaped steel cantilevered, which not only occupies internal space, but also affects the hoisting and positioning of prefabricated components, and the I-steel cantilevered Steel anchor rings need to be pre-embedded in the floor slab, but the prefabricated laminated slabs of the prefabricated structure cannot be pre-embedded with steel anchor rings. If the outer wall is opened, the integrity and flatness of the wall will be affected, and the hidden danger of leakage will be increased. In addition, the support frame of the cantilevered scaffolding in the traditional process generally uses unloading steel wire ropes to tie the wall to the wall. It was found during construction that the installation and disassembly efficiency of the cantilevered parts was seriously affected by the installation of the steel wire ropes.

Utility model content

The purpose of the utility model is to provide a cantilever bracket and a protective frame body specially used for industrial safety protection without unloading, so as to solve the inconvenience of erecting the cantilever frame in the partially assembled structure construction system, affect the hoisting construction, and cannot effectively ensure the structure of the outer wall Quality and construction safety issues.

In order to achieve the above object, the utility model takes the following technical solutions:

A special cantilever bracket for non-unloading industrial safety protection, which is a triangular steel cantilever, and is characterized in that:

It includes the wall-mounted rods installed vertically against the wall, the upper chord rods fixed horizontally on the vertical wall, and the lower chord rods arranged obliquely between the upper chord rods and the wall-mounted rods. pick frame;

At least two upper and lower oval holes are provided on the angle steel plate on the side of the wall-attaching rod close to the structural wall, and wall-through bolts are arranged in the oval holes to fix the structural wall;

At least two limit steel bars are welded on the wall sticking rod, and the two limit steel bars are respectively clamped on the upper and lower sides of the wall-through bolts;

A free spacer is provided between the limit steel bar and the angle steel plate on the side of the wall sticking rod close to the structural wall;

The through-wall bolt passes through the through hole and the oval hole in the center of the free gasket at the same time;

A reinforcing web is also arranged between the upper chord and the lower chord.

Among them, as a preferred technical solution of the present utility model, the limit steel bar is L-shaped, one end of which is vertically welded on the angle steel plate on one side of the vertical structural wall of the wall stick, and the other end is vertically welded on the wall close to the structural wall. On the angle steel plate on one side; the free spacer is arranged in the space between the limit steel bar and the wall stick.

Further preferably, the upper chord is vertically welded with several pole positioning pieces for positioning the poles of the top scaffolding.

Further preferably, the pole positioning member is a steel pipe or steel bar welded on the upper chord.

Further preferably, at the bottoms of the two ends close to the lower chord, vertical connection scaffolding pipes for connecting two adjacent triangular steel cantilever frames to connect horizontally are arranged respectively, and between the adjacent two triangular steel cantilever frames The corresponding vertical connecting scaffolding pipes are strengthened by horizontal connecting scaffolding pipes.

Further preferably, the connection between the lower chord and the upper chord is correspondingly provided with a reinforcing flat iron.

Further preferably, the wall sticking rods, upper chords, reinforcing webs and lower chords are all welded connections, angle steels and angle steels adopt fillet welds, the thickness of the welds is 5mm, and the height and length are fully welded according to the section design .

Further preferably, the screw rod of the wall-through bolt passes through the structural wall, and a small gasket and a large gasket are respectively arranged between the nut inside the wall and the wall, and the nut at the end of the cone head outside the wall is connected to the wall-mounted rod Free gaskets are set between them, and the distance between the upper and lower two wall-through bolts is 900mm.

In addition, the utility model also provides a safety protection frame prepared by using the above-mentioned special cantilever bracket for non-unloading industrialization safety protection, which is characterized in that it includes a group of non-unloading industrialization safety protection special The cantilever bracket is fixed at the same height of the structural wall, and the corresponding vertical connecting scaffolding tubes between two adjacent triangular steel cantilevering frames are strengthened and connected through horizontal connecting scaffolding tubes to form a Stable support frame; above the special cantilever bracket for non-unloading industrialized safety protection is a scaffold, and the scaffold is a double-row 6-8-layer double-row outer protection formed by vertical bars and horizontal bars connected by steel pipe buckles Scaffolding, the height of which is no more than 18m; the bottom of the vertical pole is installed and fixed corresponding to the vertical pole positioning part on the upper chord, the horizontal pole is arranged vertically to the vertical pole, the horizontal pole in the middle part forms a construction platform, and the footwork is laid on the construction platform. Protoplank; the outer side and the bottom of the double-row outer protective scaffolding are provided with dense mesh for protection.

Wherein, among the above-mentioned frame bodies, at the male corner position of the corner of the wall body, the size of the triangular steel cantilever frame is increased, and it is used as a support frame body of the horizontal protective net, and the horizontal protective net is laid on it.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

1. Small damage to the wall: This utility model is suitable for the construction of prefabricated structures, which overcomes the problem that the traditional I-steel cantilever occupies the internal space and affects the hoisting and positioning of prefabricated components. Steel anchor rings are pre-embedded in the floor, and there is no need to open holes in the external wall to affect the appearance of the wall, which greatly improves the smoothness and integrity of the external wall and reduces the hidden danger of external wall leakage;

2. High installation accuracy: The product structure of the utility model is simple. When preparing, contact the design unit and the prefabricated component factory in advance to determine the size of the cavity. work, the size is more accurate, and the integrity of the components is guaranteed to the greatest extent;

3. The construction progress is fast: the two bolt holes on the wall-mounted rods are oval holes, which makes the installation more smooth; at the same time, according to the distance between the double-row scaffolding poles on the triangular steel cantilever frame, the chords on the triangular steel cantilever frame Welded steel pipes or steel bars at the corresponding positions of the lower chords are used as positioning parts, and three to four triangular steel suspension frames are combined into a whole with buckles and scaffolding pipes, and they are hoisted together, which reduces the number of tower cranes and speeds up the construction progress;

4. The installation can be completed indoors: the limit steel bars on the wall stick limit the falling of the free gasket and nut, and there is no need to weld the free gasket and nut on the triangular suspension frame. During installation, the free gasket and The nut can give full play to its fixing function, and also reduces the electric welding construction on the triangular steel cantilever frame to ensure the integrity of its components. With hoisting, workers only need to complete the installation indoors, greatly reducing safety hazards.

5. Convenient construction: the nuts on the inner side of the wall are welded to the ends of the bolts through the wall, and the nuts and washers on the other side are fixed on the triangular suspension frame with limit steel bars, which reduces the loss of small components such as nuts and washers , Damage rate, the end of the through-wall bolt is a tapered end, which makes the installation of the through-wall bolt more convenient and fast.

6. Various functions and wide application range: In addition to being used as a scaffold support frame, the triangular steel cantilever frame involved in the present invention can also be used for erecting the formwork of outdoor air-conditioning panels or bay window panels on the triangular steel cantilever frame. As an auxiliary tool for laying horizontal safety nets, it is not limited by the thickness of the wall and has a wide range of applications.

In addition, the utility model also cancels the unloading wire rope on the basis of the existing structure, improves the installation and disassembly efficiency of the cantilever frame, and saves the construction period; the triangular steel cantilever frame is a tool-type scaffold, which is lighter in weight, convenient for turnover, and reduces material waste , which is closer to the modern engineering construction concept of green construction. According to the calculation,

Description of drawings

The above-mentioned and/or other aspects and advantages of the present utility model will become clearer and easier to understand through the detailed description in conjunction with the following drawings, which are only schematic and do not limit the utility model, wherein:

Fig. 1 is the overall structure schematic diagram of the special cantilevered bracket for non-unloading industrialization safety protection related to the utility model;

Fig. 2 is a structural schematic diagram of a wall-attaching rod with an oval hole related to the utility model;

Fig. 3 is the structural representation of the wall-attached pole that is provided with limit reinforcement;

Fig. 4 is the structural representation of wall bolt;

Fig. 5 is a schematic diagram of the structure of the double-row outer protective scaffold erected on the cantilevered bracket;

FIG. 6 is a schematic diagram of the overall structure of the entire safety protection frame involved in the present invention.

Reference signs: 1-wall bolt, 1.1-screw, 1.2-nut, 1.3-small washer, 1.4-big washer, 1.5-cone head, 2-wall sticking rod, 2.1-elliptical hole, 3-steel fixing Components, 4-reinforced web, 5-upper chord, 6-lower chord, 7-reinforced flat iron, 8-limiting steel bar, 9-structural wall, 10-horizontal connecting scaffold tube, 11-vertical connecting foot Hand tube, 12-footboard, 13-dense mesh, 14-free spacer, 15-vertical pole, 16-horizontal bar.

detailed description

In the following, embodiments of the special cantilever bracket and protective frame body for non-unloading industrialized safety protection of the present utility model will be described with reference to the accompanying drawings. The embodiments described here are specific specific implementations of the present utility model, and are used to illustrate the concept of the present utility model. They are all explanatory and exemplary, and should not be construed as limitations on the implementation of the present utility model and the scope of the present utility model. limit. In addition to the embodiments described here, those skilled in the art can also adopt other obvious technical solutions based on the claims of the application and the contents disclosed in the description, and these technical solutions include adopting any obvious changes made to the embodiments described here. Replacement and modified technical solutions. The accompanying drawings in this specification are schematic diagrams, which assist in explaining the concept of the utility model, and schematically represent the shapes of various parts and their interrelationships. Please note that in order to clearly show the structures of the components in the embodiment of the present invention, the drawings are not drawn in the same scale. The same reference numerals are used to designate the same parts.

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figure 1, the utility model relates to a special cantilever bracket for safety protection without unloading industrialization. The upper chord 5 and the lower chord 6 arranged obliquely between the upper chord 5 and the wall-mounting rod 2 are all angle steel, and the head and tail are connected in sequence to form a triangular steel cantilever frame; the wall-mounting rod 2, the upper chord 5, the reinforced Both the web 4 and the lower chord 6 are connected by welding, and the angle steel and the angle steel adopt a fillet weld, the thickness of the weld is 5mm, and the height and length are fully welded according to the section design.

Wherein, as shown in Figure 2, at least two upper and lower oval holes 2.1 are arranged on the angle steel plate on the side of the wall sticking rod 2 close to the structural wall, and the wall bolts 1 are fixed to the structural wall 9 in the oval holes 2.1; Fig. 4, the screw rod 1.1 of the wall-through bolt 1 passes through the structural wall 9, and a small washer 1.3 and a large washer 1.4 are respectively arranged between the nut 1.2 in the wall and the wall, and the nut at the end of the cone head 1.5 on the outside of the wall 1.2 A free spacer 14 is set between the wall sticking rod 2, and the distance between the upper and lower two wall-through bolts 1 is 900mm.

At least two limit steel bars 8 are welded on the angle steel plate of the wall stick 2, and the limit steel bars 8 are arranged in parallel to the structural wall 9 and are respectively clamped on the upper and lower sides of the wall-through bolt 1; as shown in Figure 3, the preferred limit Reinforcement bar 8 is L-shaped, and its one end is vertically welded on the angle steel plate on one side of the vertical structure wall of sticking bar 2, and the other end is vertically welded on the angle steel plate close to the structure wall side; Free spacer 14 is located at In the space between the limit steel bar 8 and the wall stick 2. A free spacer 14 is provided between the limit steel bar 8 and the angle steel plate on one side of the wall body 9 close to the wall stick 2; the through-wall bolt 1 passes through the through hole and the oval hole 2.1 in the center of the free spacer 14 at the same time.

In addition, a reinforcing web 4 is also provided between the upper chord 5 and the lower chord 6, and several vertical pole positioning parts 3 for positioning the top scaffolding pole are welded vertically on the upper chord 5, preferably welded on the upper chord 5 steel pipes or steel bars. At the bottom of the two ends near the lower chord 6, respectively, vertically connecting scaffolding pipes 11 for connecting two adjacent triangular steel suspension frames to connect horizontally, and corresponding vertical connection pipes 11 between adjacent two triangular steel suspension frames. The connection between the connecting scaffold pipes 11 is strengthened through the horizontal connecting scaffold pipes 10 . The connection between the lower chord 6 and the upper chord 5 is correspondingly provided with a reinforcing flat iron 7 .

As shown in Figure 5 and Figure 6, the utility model also provides a safety protection frame prepared by using the above-mentioned non-unloading industrial safety protection special cantilever bracket, which is characterized in that: it includes a group of non-unloading Cantilever brackets for industrial safety protection are fixed at the same height of the structural wall 9, and the vertically connected scaffolding tubes 11 corresponding to the adjacent two triangular steel cantilevered frames are connected horizontally to the scaffolding tubes 10 Strengthen the connection to form a stable support frame body; the special cantilever bracket for non-unloading industrial safety protection is a scaffolding, and the scaffolding is a double row of 6-8 connected by vertical rods 15 and horizontal rods 16 through steel pipe buckles. Double-layer outer protective scaffolding, the height of which is not more than 18m; the bottom of the pole 15 is installed and fixed corresponding to the pole positioning part 3 on the upper chord 5, and the cross pole 16 is arranged vertically to the pole 15, and the cross pole 16 in the middle part forms a construction platform. Scaffold boards 12 are laid on the platform; dense mesh nets 13 are set on the outside and bottom of the double-row outer protective scaffolds for protection. The construction method of above-mentioned safety protection frame body comprises the following steps:

1. Material preparation:

Including the preparation of angle steel, steel bar, steel plate gasket and wall bolt materials; the steel used for the triangular steel cantilever frame, its material should comply with the current national "Carbon Structural Steel" GB/T700 Q235 grade steel regulations.

2. Processing of cantilever bracket

Welding requirements: Weld angle steel in sequence to form a triangular steel cantilever frame, and set a reinforcing web 4 in the frame body frame; set up two adjacent triangular steel cantilever frames at the bottom of the two ends near the lower chord 6 The vertically connected scaffolding pipe 11 connecting the horizontal connection adopts a fillet weld between the angle steel and the angle steel, the thickness of the weld is 5mm, and the height and length are fully welded according to the section design. 2 The triangular steel cantilever frame should be processed in a positive and negative pair, and used in a positive and negative arrangement during installation.

3. Locate and leave an oval hole through the wall

Before setting up the frame body, measure and set the installation position of the triangular steel cantilever frame and the positioning control line of the pole. When binding steel bars in the structure, reserve binding or welding wall-through pipes on the steel bars. After pouring the wall concrete and removing the formwork, through holes are installed. 900mm, the triangle bracket is installed straight.

4. Installation of cantilever frame

Three to four triangular steel cantilever frames are combined into a whole with buckles and scaffolding tubes, hoisted together, and the cantilever frames are connected and fixed with the structural wall 9 through wall bolts 1; during operation, the triangular steel cantilever frames Hoist to the designated location, and install the wall-through bolts φ20 from the inside of the outer wall according to the spacing. The total length of the bolts is determined according to the wall thickness, plus 4 nuts, 1 angle steel thickness and 2 steel gaskets with a thickness of 8mm. Pay attention to the protection of threaded fasteners during construction, and the foreman and safety personnel need to inspect the torsional strength of nuts and fasteners frequently. Weld the riser on the tripod to position the rebar head. A 48 steel pipe scaffolding system was erected above this position.

5. Reinforcement and fixation of adjacent suspension frames

The corresponding vertical connecting scaffolding pipes 11 between the two triangular steel cantilever frames on the edge of adjacent hoisting batches are strengthened and connected through horizontal connecting scaffolding pipes 10 .

6. Installation of double-row outer protective scaffolding

Corresponding to the pole positioner 3 on the upper chord 5, install and fix the pole 15, and then set up the crossbar 16 in turn to form a double-row 6-8-layer double-row outer protective scaffold; the scaffold system is erected according to the calculation, and the relevant structural requirements meet the requirements of the specification.

7. Removal of double-row outer protective scaffolding

After the scaffolding is used for construction, the double-row outer protective scaffolding shall be removed;

1) The following preparatory work must be completed before demolition:

(1) Comprehensively check whether the fastener connections, wall parts, and support systems of the scaffold meet the safety requirements.

(2) Remove debris and ground obstacles on the scaffolding.

(3) Scaffolding shall be dismantled according to the construction requirements of the outer eaves. During the dismantling, the work area shall be designated, all personnel shall be prohibited from entering, and special guards shall be assigned at the same time.

2) The demolition shall meet the following requirements:

(1) The sequence of dismantling shall follow the principle of dismantling after erection and dismantling after erection, and it is strictly forbidden to work up and down at the same time.

(2) All the wall parts should be removed layer by layer along with the scaffolding. It is strictly forbidden to remove the whole layer or several layers of the wall parts before dismantling the scaffolding; Even wall reinforcement.

8. Removal of the suspension frame

After the double-row outer protective scaffolding is removed, the cantilever bracket is finally removed, and the bolts are removed with a wrench. At this point, the entire construction process is completed. The triangular steel cantilever frame has a self-weight of about 40kg. It is manually dismantled, piled up, hoisted and loaded onto a vehicle for rental return.

The following requirements should be met during the dismantling process of steps 7 and 8:

(1) All accessories must be transported to the ground in time, and throwing away is strictly prohibited.

(2) The components and parts transported to the ground should be inspected, repaired and maintained in time, and should be stacked and stored at any time according to the variety and specification, and placed in a dry and ventilated place to prevent corrosion.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (9)

1. It is triangular shape suspension scaffold 1. one kind is without the special bracket of encorbelmenting of off-load industrialization security protection, it is characterised in that：

   Including the vertically arranged patch wall bar of patch wall（2）, the top boom laterally fixed of vertical wall（5）And angularly disposed winding up Bar（5）With pasting wall bar（2）Between lower boom（6）, three is angle steel, is sequentially connected with to form triangular shape suspension scaffold from beginning to end；

   The patch wall bar（2）It is close to be provided with two elliptical apertures above and below at least on the gusset of structure wall side（2.1）, it is described Elliptical aperture（2.1）Inside it is all provided with through-wall bolt（1）With structure wall（9）It is fixed；

   The patch wall bar（2）On be welded with least two limit steel bars（8）, two limit steel bars（8）It is clamping respectively to wear Wall screw（1）Both sides up and down；

   The limit steel bar（8）With pasting wall bar（2）It is close to structure wall（9）Free pad is provided between the gusset of side （14）；

   The through-wall bolt（1）Also cross free pad（14）The through hole and elliptical aperture at center（2.1）；

   The top boom（5）And lower boom（6）Between be additionally provided with reinforcement web member（4）.
2. 2. one kind according to claim 1 is without the special bracket of encorbelmenting of off-load industrialization security protection, it is characterised in that：It is described Limit steel bar（8）For L-shaped, its one end is vertically welded in patch wall bar（2）On the gusset plate of vertical stratification wall side, the other end It is vertically welded in and is close on the gusset of structure wall side；The free pad（14）It is located at limit steel bar（8）With pasting wall bar （2）Between space in.
3. 3. one kind according to claim 1 is without the special bracket of encorbelmenting of off-load industrialization security protection, it is characterised in that：It is described Top boom（5）On be welded with vertically it is some for top scaffold upright rod positioning vertical rod keepers（3）.
4. 4. one kind according to claim 3 is without the special bracket of encorbelmenting of off-load industrialization security protection, it is characterised in that：It is described Vertical rod keeper（3）To be welded on top boom（5）On steel pipe or steel bar piece.
5. 5. one kind according to claim 1 is without the special bracket of encorbelmenting of off-load industrialization security protection, it is characterised in that：By The nearly lower boom（6）Two end bases set respectively for the perpendicular of two neighboring triangular shape suspension scaffold connection lateral connection To connection scaffold tubes（11）, corresponding vertical connection scaffold tubes between two neighboring triangular shape suspension scaffold（11）Between pass through horizontal stroke To connection scaffold tubes（10）Carry out reinforcement connection.
6. 6. one kind according to claim 1 is without the special bracket of encorbelmenting of off-load industrialization security protection, it is characterised in that：It is described Lower boom（6）With top boom（5）The position of connection is correspondingly arranged on reinforcement band iron（7）.
7. 7. one kind according to claim 1 is without the special bracket of encorbelmenting of off-load industrialization security protection, it is characterised in that：It is described Through-wall bolt（1）Screw rod（1.1）Through structure wall（9）, positioned at nut within the walls（1.2）Set pulvinulus respectively between wall Piece（1.3）With big pad（1.4）, the conehead on the outside of wall（1.5）The nut of one end（1.2）With pasting wall bar（2）Between set trip From pad（14）, upper and lower two through-wall bolts（1）Spacing be 900mm.
8. 8. a kind of prepare using described in claim 1~7 any one without the special bracket of encorbelmenting of off-load industrialization security protection Security protection support body, it is characterised in that：Including located at one group of bottom without the special bracket of encorbelmenting of off-load industrialization security protection, It is described to be fixed on structure wall（9）Uniform height on, corresponding vertical connecting pin between two neighboring triangular shape suspension scaffold Hand pipe（11）Between pass through lateral connection scaffold tubes（10）Reinforcement connection is carried out, forms a firm supporting frame；The nothing It is scaffold on the special bracket of encorbelmenting of off-load industrialization security protection, the scaffold is by vertical rod（15）And cross bar（16）It is logical Cross steel pipe and buckle double 6~8 layers double outer protective scaffold connected into, its height is no more than 18m；The vertical rod（15）Bottom pair Answer top boom（5）On vertical rod keeper（3）Installation is fixed, the cross bar（16）Vertical posts（15）Set, center section Cross bar（16）Construction platform is formed, scaffold board is laid in the construction platform（12）；In the outer of the double outer protective scaffold Side and bottom set Dense mesh screen（13）Protected.
9. 9. the security protection support body of the special bracket preparation of encorbelmenting of no off-load industrialization security protection according to claim 8, It is characterized in that：External angle position at wall turning, the size increase of the triangular shape suspension scaffold, as horizontal protective net Supporting frame uses, and lays horizontal protective net thereon.