CN203867160U - Overhanging frame - Google Patents

Abstract

The utility model provides an overhanging frame. The problem that work efficiency is not high due to the fact that an overhanging frame in the prior art is inconvenient to use is solved. The overhanging frame comprises a profile steel cantilever beam and a diagonal draw bar, and the profile steel cantilever beam and the diagonal draw bar are fixedly arranged on a construction body through a cantilever beam fixing piece and a draw bar fixing piece respectively. The profile steel cantilever beam is composed of a steel beam fixing plate, H-shaped steel, a draw bar base, a first vertical bar and a second vertical bar, and the steel beam fixing plate, the draw bar base, the first vertical bar and the second vertical bar are all welded to the H-shaped steel. The steel beam fixing plate is connected with the cantilever beam fixing piece. The diagonal draw bar is composed of a lower draw bar, an adjusting bar and an upper draw bar, and the lower draw bar is connected with the draw bar base. The upper draw bar and the lower draw bar are connected with the adjusting bar through threads. Through the design, mounting is convenient, and manufacturing cost is lowered.

Description

A kind of suspension scaffold

Technical field

The utility model relates to building materials technology field, refers to especially pull bar instrument, a kind of suspension scaffold.

Background technology

Along with the development of highrise building, scaffold construction technology has played more and more important effect to workmanship, construction speed and safety, construction technology be also attain perfect.

Scaffold is essential aid in the time of construction, but existing scaffold is to use common anchor fixed when mounted mostly, not only arrange early stage inconvenience is installed, follow-up arrangement is wasted time and energy, and the use of steel is also also very large, and then has increased very large building costs.

The utility model proposes a kind of suspension scaffold, by the design to its structure and material, meet under the condition of construction requirement, improved the applicability of installing and removing, greatly improved operating efficiency.

Utility model content

The utility model proposes a kind of suspension scaffold, solved suspension scaffold in prior art and used inconvenience to cause the problem that operating efficiency is not high.

The technical solution of the utility model is achieved in that

A kind of suspension scaffold, comprising:

Shaped steel outrigger and diagonal member, be fixed in construction main body by outrigger fixture and pull bar fixture respectively;

Wherein, shaped steel outrigger is made up of girder steel fixed head, i iron, draw-bar seat, the first vertical rod and the second vertical rod, and girder steel fixed head, draw-bar seat, the first vertical rod and the second vertical rod are all welded on i iron; Girder steel fixed head is connected with outrigger fixture;

Diagonal member is made up of lower link, adjusting rod and upper connecting rod, and lower link is connected with draw-bar seat; Upper connecting rod is connected with adjusting rod by screw thread with lower link.

As further technical scheme, shaped steel outrigger also comprises: triangle muscle, two face welds with girder steel fixed head and i iron respectively, and triangle muscle is specially Q235A triangle muscle.

As further technical scheme, upper connecting rod comprises upper connecting rod connector and upper connecting rod connecting rod, wherein, and one end welding of upper connecting rod connector and upper connecting rod connecting rod; The other end of upper connecting rod connecting rod is set to nut; Upper connecting rod connector is V-arrangement, and upper connecting rod connector is provided with the first installing hole, fixes by pull bar fixture.

As further technical scheme, lower link comprises lower link connector and lower link connecting rod, wherein, and one end welding of lower link connector and lower link connecting rod; The other end of lower link connecting rod is set to nut; Lower link connector is provided with the second installing hole, is bolted.

As further technical scheme, adjusting rod comprises adjusting rod main body and the threaded connector that is arranged on adjusting rod main body two ends, and the threaded connector at two ends is connected with upper connecting rod and lower link respectively.

As further technical scheme, outrigger fixture and pull bar fixture are by isometric studs, pad and hex nut composition.

As further technical scheme, girder steel fixed head is specially Q235A girder steel fixed head; Draw-bar seat is specially Q235A draw-bar seat; The first vertical rod is specially Q235A the first vertical rod; The second vertical rod is specially Q235A the second vertical rod; I iron is specially i iron No. 18; Diagonal member is specially Q235A diagonal member.

As further technical scheme, i iron length L a is 1.2m; Upper connecting rod connecting rod and lower link connecting rod are diameter 22mm; Upper connecting rod connector is that V-arrangement angle beta is 163.37 °; The angle α that lower link and i iron form is 72.37 °; Outrigger fixture and pull bar fixture distance are 3m; Between the first vertical rod and the second vertical rod, distance L b is 0.8m; The first vertical rod is 0.2995m with construction main body distance L c.

The utlity model has following beneficial effect:

1,, by many experiments, select unlike material to make according to the characteristic of each parts, to ensure that carrying reaches qualified standard completely; Connector, the equal nut of fixture connect, and it is convenient to install, remove.

2, by the design of those several member connection structures and angle, make the utility model on the basis that reaches safety standard, save cost of manufacture.

Brief description of the drawings

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is the utility model structural representation;

Fig. 2 is shaped steel outrigger internal force computation structure schematic diagram;

Fig. 3 is upper connecting rod structural representation;

Fig. 4 is adjusting rod structural representation;

Fig. 5 is that adjusting rod is looked up structural representation.

In figure: 1, shaped steel outrigger; 11, girder steel fixed head; 12, i iron; 13, draw-bar seat; 14, the first vertical rod; 15, the second vertical rod; 16, triangle muscle; 2, diagonal member; 201, upper connecting rod connector; 202, upper connecting rod connecting rod; 203, lower link connector; 204, lower link connecting rod; 205, adjusting rod main body; 206, threaded connector; 3, construction main body; 4, outrigger fixture; 5, pull bar fixture.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.

As shown in Fig. 1～Fig. 5, a kind of suspension scaffold the utility model proposes, comprising:

Shaped steel outrigger 1 and diagonal member 2, be fixed in construction main body 3 by outrigger fixture 4 and pull bar fixture 5 respectively;

Wherein, shaped steel outrigger 1 is made up of girder steel fixed head 11, i iron 12, draw-bar seat 13, the first vertical rod 14 and the second vertical rod 15, and girder steel fixed head 11, draw-bar seat 13, the first vertical rod 14 and the second vertical rod 15 are all welded on i iron 12; Girder steel fixed head 11 is connected with outrigger fixture 4;

Diagonal member 2 is made up of lower link, adjusting rod and upper connecting rod, and lower link is connected with draw-bar seat 13; Upper connecting rod is connected with adjusting rod by screw thread with lower link.

As further technical scheme, shaped steel outrigger 1 also comprises: triangle muscle 16, two face welds with girder steel fixed head 11 and i iron 12 respectively, and triangle muscle 16 is specially Q235A triangle muscle.

The utility model, is made up of shaped steel outrigger 1 and diagonal member 2, and is fixed in construction main body 3 by outrigger fixture 4 and pull bar fixture 5 respectively, and then reaches load bearing requirements while construction completely; The building block of shaped steel outrigger 1 all has special welding procedure to be welded, and not only just the utility model stability is high, safe and practical, and more just manufacture craft is simplified, and greatly reduces production costs.

As further technical scheme, upper connecting rod comprises upper connecting rod connector 201 and upper connecting rod connecting rod 202, and wherein, upper connecting rod connector 201 welds with one end of upper connecting rod connecting rod 202; The other end of upper connecting rod connecting rod 202 is set to nut; Upper connecting rod connector 201 is V-arrangement, and upper connecting rod connector 201 is provided with the first installing hole, fixing by pull bar fixture 5.

As further technical scheme, lower link comprises lower link connector 203 and lower link connecting rod 204, and wherein, lower link connector 203 welds with one end of lower link connecting rod 204; The other end of lower link connecting rod 204 is set to nut; Lower link connector 203 is provided with the second installing hole, is bolted.

As further technical scheme, adjusting rod comprises adjusting rod main body 205 and the threaded connector 206 that is arranged on adjusting rod main body 205 two ends, and the threaded connector 206 at two ends is connected with upper connecting rod and lower link respectively.

In the utility model, the building block of diagonal member 2 is all by designing after abundant checking computations, design upper connecting rod and lower link and adjusting rod are threaded connection, and by calculating to guarantee the standard that meets of pulling force and bearing capacity, and then make the utility model install, remove all convenient and swift, greatly increase work efficiency, reduce labor strength.

As further technical scheme, outrigger fixture 4 and pull bar fixture 5 are by isometric studs, pad and hex nut composition.

In the utility model, shaped steel outrigger 1 and diagonal member 2 fixture in construction main body 3 is preferably by isometric studs, pad and hex nut, not only easy for installation, and firmness and all raisings greatly of stability.

As further technical scheme, girder steel fixed head 11 is specially Q235A girder steel fixed head; Draw-bar seat 13 is specially Q235A draw-bar seat; The first vertical rod 14 is specially Q235A the first vertical rod; The second vertical rod 15 is specially Q235A the second vertical rod; I iron 12 is specially i iron No. 18; Diagonal member 2 is specially Q235A diagonal member.

In the utility model, parts material is through many experiments, and preferred above-mentioned material is made, and ensures internal force, rigidity and the hardness of each parts self, and then ensures that it meets all standard while construction.

As further technical scheme, i iron 12 length L a are 1.2m; Upper connecting rod connecting rod 202 and lower link connecting rod 204 are diameter 22mm; Upper connecting rod connector 201 for V-arrangement angle beta be 163.37 °; The angle α that lower link and i iron 12 form is 72.37 °; Outrigger fixture 4 is 3m with pull bar fixture 5 distances; Between the first vertical rod 14 and the second vertical rod 15, distance L b is 0.8m; The first vertical rod 14 is 0.2995m with construction main body 3 distance L c.

As shown in Fig. 1～Fig. 2: embodiment of the utility model, its Force Calculation is as follows:

1. suspension scaffold designing and calculating

Suspension scaffold forms (as shown in Figure 1) by shaped steel outrigger and diagonal member, scaffold support body height is 20m to the maximum, walk the high 1.8m that gets, the first vertical rod and the second vertical rod transfer Lb are 0.8m, the first vertical rod is 0.2995m with the distance L c of construction body, get 0.3m, No. 18 compositions of i iron on shaped steel outrigger, shaped steel length L a is 1.2m.Diagonal member is φ 22 shanks of bolt, and centre is furnished with the high-strength nut composition bolt of M22.Diagonal member upper end is bolted on building lower end and is connected with shaped steel outrigger.

(1) outer row's pin hand load (being converted to 1m height)

1. platform legs hand deadweight

Two legers, vertical rod, the little cross bar of half root, three fasteners

[(1.5×2+0.7)/1.8+1]×0.0384+0.01×3=0.1473

Completely spread bamboo basketry (0.9 × 1.5 × 0.07)/2 × 1.8=0.0263

q _k1=0.1473+0.0263=0.1736kN/m

2. pin hand lateral surface reaches outer vertical rod load

Two flak jacket railings, calculate by eight fasteners within the scope of the every secondary bridging of vertical bracing (bridging calculates by 4.0 × 4.0m), and linked network is completely hung, and chooses together net, one toeguard of overhang layer.

Two flak jacket railing 2 × 1.5 × 0.0384/1.8=0.064

Vertical bracing

$\frac{(4.0+4.0)\×0.0384}{4.0\×4.0}\×1.5\×1.0=0.0288$

Fastener

$(\frac{8}{4.0\×4.0}\×1.5\×1.0+\frac{2}{1.8})\×0.01=0.019$

Linked network

1.5×1.00×0.005=0.0075

One baseboard (average every 20m is high to be established together)

0.054×1.5/20=0.0045

Choose together net (establishing together by average 20m is high)

0.30/20=0.015

q _k3=0.064+0.0288+0.019+0.0075+0.00405+0.015=0.1384kN/m

3. scope of operation layer material deadweight

There is railing according to " construction handbook " P195 fastener type steel pipe scaffold bamboo string sheet, in the time that railing transfer is 0.8, q _k2=0.3587kN/m, by two layers of consideration of operation simultaneously

G _k2=n ₁L _a·q _k2=2×1.5×0.3587=1.0761kN/m

4. working load

Consider by structure operation

q _k=0.90×3(kN/m ²)×0.5=1.35kN/m

Q _k=n ₁L _a·q _k=1×1.5×1.35=2.025kN

5. shaped steel outrigger deadweight

Q _beam=1.2 × 0.241=0.2892kN

(2) when support body height H _iget 20m

Standard dead load

G _k=H _i×(q _k1+q _k2)+G _k2=20×(0.1736+0.1384)+1.076=7.316kN

Standard dynamic load

Q _k=2.025kN

Load factor: dead load gets 1.2, dynamic load 1.4

Consider that influence coefficient (comprising the coefficient of impact) gets 1.5 once in a while

Suspension scaffold termination is born by pin hand and is transmitted calculating load

P=(1.2×G _k)+1.4×Q _k×1.5=(1.2×7.316)+1.4×2.025=11.6142kN

2. each component internal force calculates

(1) it is little that the loading ratio that in, row's pin hand is passed to shaped steel outrigger is arranged the load that trick transmits outward, for the sake of security, supposes that interior row's pin hand load transmits load with outer row's pin hand.

(2) suspension scaffold outrigger calculates

1. shaped steel outrigger

Shaped steel outrigger internal force calculates, as shown in Figure 2:

Shaped steel length L a is 1.2m, and according to the calculating needs of internal force, being divided into again L1 is that 0.3, L2 is that 0.612, L3 is 0.188

Shaped steel outrigger internal force group

Solve

Moment M _c=0.3P+0.6q _beam+ 0.912R _b+ 1.1P=7.23kNm

2. diagonal member

As shown in Figure 1: diagonal member and horizontal sextant angle α=72.37 °

Sin α=sin72.37 °=0.953

Oblique pulling $T=\frac{R_B}{\sin \mathrm{\α}}=\frac{10.09}{0.953}=10.59\mathrm{kN}$

3. cross-sectional strength checking computations

Shaped steel outrigger cross section is i iron, resistance moment No. 18

W=185cm ³=1.85×10 ⁵(mm) ³

Diagonal member φ 22 one-level steel, net section A _j=1360mm ²

(1) shaped steel Cantilever Beams

Outrigger M _c=7.23kNm

Stress $\mathrm{\&sigma;}=\frac{M_c}{W}=39.08N/{\mathrm{mm}}^2<f=205N/{\mathrm{mm}}^2,$ Meet

(2) diagonal member

Diagonal member T=10.59kN

$\mathrm{\&sigma;}=\frac{T}{A_j}=\frac{10.59\&times;{10}^3}{1306}=7.79N/{\mathrm{mm}}^2<f=205N/{\mathrm{mm}}^2,$

4. each node high-strength bolt checking computations

(1) upper connecting rod fixed point

Adopt a high strength stud, 10.9 grades of intensity

M22 high-strength bolt prestressing force P value, P=155kN tables look-up to obtain

When this high-strength bolts, bearing shearing between rubbing surface and its bearing capacity of axial external broach of shank of bolt should meet

Shear stress N _v=T _vertically=T × sin α=10.09N/mm ²

External broach N _t=T _level=T × cos α=3.21N/mm ²

$N_v^b=0.9n_f\mathrm{\&mu;P}=0.9\&times;1\&times;0.3\&times;155=41.85N/{\mathrm{mm}}^2$

$N_t^b=0.8P=134N/{\mathrm{mm}}^2$

$\frac{N_v}{N_v^b}+\frac{N_t}{N_t^b}=\frac{10.09}{41.85}+\frac{3.21}{134}=0.265\&le;1,$ Meet the demands.

(2) upper connecting rod is connected with the spotweld of steel plate

Diagonal member T=10.59kN, fusion length l _ffor 60mm, weld bead height h _f=6mm

Weld seam shear stress

${\mathrm{\&tau;}}_f=\frac{T}{h_f(l_f-20)\&times;4}=\frac{10.59\&times;{10}^3}{6\&times;40\&times;4}=11.03N/{\mathrm{mm}}^2$

τ _f<[τ _f]=95N/mm ², meet and shear requirement.

(3) between diagonal member and Cantilever Beams, be connected

M22,10.9 grades of high-strength bolt checking computations, this bolt is friction-type connection bolt

Pure shear shear force is N=10.59kN

M22 bolt shear Design intensity

$N_v^b=0.9n_f\mathrm{\&mu;P}=0.9\&times;1\&times;0.3\&times;155=41.85N/{\mathrm{mm}}^2$

So meet.

(4) lower link connection weld seam checking computations

Fusion length l _ffor 150mm, weld bead height h _f=5mm

Paste pin weld seam shear stress

${\mathrm{\&tau;}}_f=\frac{N}{0.7\&times;h_f(l_f-20)\&times;2}=\frac{10.59\&times;{10}^3}{0.7\&times;5\&times;130\&times;2}=11.64N/{\mathrm{mm}}^2$

Weld seam is sheared design stress

${\mathrm{\&tau;}}_f<f_f^w=160N/{\mathrm{mm}}^2,$ Meet shear strength.

(5) outrigger is connected checking computations with wall

Outrigger is connected with wall selects two M22 high-strength bolts to connect, and this high-strength bolt is pressure-bearing type connecting bolt N _v=R _a=33.463kN

High-strength bolt shear stress design load

Two M22 shear Design values $\left[N_v^b\right]=2\&times;\frac{{\mathrm{\&pi;d}}^2}{4}\&times;f_v^b=2\&times;\frac{3.14\&times;22\&times;22}{4}\&times;310=235.56\mathrm{kN}$ Meet the demands.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (8)

1. a suspension scaffold, is characterized in that, comprising:

Shaped steel outrigger (1) and diagonal member (2), be fixed in construction main body (3) by outrigger fixture (4) and pull bar fixture (5) respectively;

Wherein, described shaped steel outrigger (1) is made up of girder steel fixed head (11), i iron (12), draw-bar seat (13), the first vertical rod (14) and the second vertical rod (15), and described girder steel fixed head (11), described draw-bar seat (13), described the first vertical rod (14) and described the second vertical rod (15) are all welded on described i iron (12); Described girder steel fixed head (11) is connected with described outrigger fixture (4);

Described diagonal member (2) is made up of lower link, adjusting rod and upper connecting rod, and described lower link is connected with described draw-bar seat (13); Described upper connecting rod is connected with described adjusting rod by screw thread with described lower link.

2. suspension scaffold as claimed in claim 1, it is characterized in that, described shaped steel outrigger (1) also comprises: triangle muscle (16), two face welds with described girder steel fixed head (11) and described i iron (12) respectively, and described triangle muscle (16) is specially Q235A triangle muscle.

3. suspension scaffold as claimed in claim 1, is characterized in that, described upper connecting rod comprises upper connecting rod connector (201) and upper connecting rod connecting rod (202), and wherein, described upper connecting rod connector (201) welds with one end of described upper connecting rod connecting rod (202); The other end of described upper connecting rod connecting rod (202) is set to nut; Described upper connecting rod connector (201) is V-arrangement, and described upper connecting rod connector (201) is provided with the first installing hole, fixing by described pull bar fixture (5).

4. suspension scaffold as claimed in claim 3, is characterized in that, described lower link comprises lower link connector (202) and lower link connecting rod (204), and wherein, described lower link connector (202) welds with one end of described lower link connecting rod (204); The other end of described lower link connecting rod (204) is set to nut; Described lower link connector (202) is provided with the second installing hole, is bolted.

5. suspension scaffold as claimed in claim 4, it is characterized in that, described adjusting rod comprises adjusting rod main body and the threaded connector (206) that is arranged on described adjusting rod main body two ends, and the described threaded connector (206) at two ends is connected with described upper connecting rod and described lower link respectively.

6. suspension scaffold as claimed in claim 1, is characterized in that, described outrigger fixture (4) and described pull bar fixture (5) are by isometric studs, pad and hex nut composition.

7. suspension scaffold as claimed in claim 5, is characterized in that, described girder steel fixed head (11) is specially Q235A girder steel fixed head; Described draw-bar seat (13) is specially Q235A draw-bar seat; Described the first vertical rod (14) is specially Q235A the first vertical rod; Described the second vertical rod (15) is specially Q235A the second vertical rod; Described i iron (12) is specially i iron No. 18; Described diagonal member (2) is specially Q235A diagonal member.

8. suspension scaffold as claimed in claim 5, is characterized in that, described i iron (12) length L a is 1.2m; Described upper connecting rod connecting rod (202) and described lower link connecting rod (204) are diameter 22mm; Described upper connecting rod connector (201) for V-arrangement angle beta be 163.37 °; The angle α that described lower link and described i iron (12) form is 72.37 °; Described outrigger fixture (4) is 3m with described pull bar fixture (5) distance; Between described the first vertical rod (14) and described the second vertical rod (15), distance L b is 0.8m; Described the first vertical rod (14) is 0.2995m with described construction main body (3) distance L c.