CN207296210U - A kind of adjustable height steel stair - Google Patents
A kind of adjustable height steel stair Download PDFInfo
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- CN207296210U CN207296210U CN201720953496.3U CN201720953496U CN207296210U CN 207296210 U CN207296210 U CN 207296210U CN 201720953496 U CN201720953496 U CN 201720953496U CN 207296210 U CN207296210 U CN 207296210U
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Abstract
The utility model discloses a kind of adjustable height steel stair, including the girder steel laid of two groups of inclinations and the step plate between two groups of girder steels；Every group of girder steel includes upper girder steel and the lower girder steel below upper girder steel, upper girder steel is in parallel laying with lower girder steel, upper girder steel is connected with lower girder steel by multiple supporting rods, the upper end branch of supporting rod is withstood in upper girder steel, multiple step plates are parallel to each other and in horizontally disposed, angle between step plate and girder steel is 21 °~40 °, and the rear end of step plate is connected by connector with upper girder steel, and front edge of board of marking time is connected by connector with lower girder steel.The utility model is designed reasonably using effect is good, energy is easy, is rapidly completed the installation of steel stair, and installation process is easily controllable, by adjusting the spacing between upper girder steel and lower girder steel, to adjust the angle between step plate and girder steel, to adapt to the requirement of steel stair needed for different height landing beam, connected between step plate and girder steel by screw rod, installation, convenient disassembly.
Description
Technical field
The utility model belongs to steel structure stairway technical field, more particularly, to a kind of adjustable height steel stair.
Background technology
In recent years, as the continuous development of building trade, steel construction are widely used large-scale with the advantage of its own
Public building and civil buildings in, in civil buildings, outdoor provisional steel stair is especially common.
At present, general steel stair to be formed by the way that the girder steel, step plate and handrail are welded, due to steel stair
Pad position is more, and quantities is big, causes its cost higher, and needs the material of well cutting being transported to infield during welding,
Space requirement to welding place is higher；Weld dismantle after stair shaping it is inconvenient, it is not easily shifted, cause to have enough to meet the need constant, and weld
Connecing steel stair and highly cannot be adjusted causes to need secondary operation to weld after having enough to meet the need, and cost is higher.
The content of the invention
The technical problem to be solved by the utility model is to for above-mentioned deficiency of the prior art, there is provided a kind of height
Adjustable steel stair, its is simple in structure, design reasonable employment effect is good, and energy is easy, is rapidly completed the installation of steel stair, and pacifies
Dress process is easily controllable, by adjusting the spacing between upper girder steel and lower girder steel, to adjust between step plate and the girder steel
Angle, to adapt to the requirement of steel stair needed for different height landing beam, and is connected between step plate and the girder steel by screw rod,
Installation, convenient disassembly, it is cost-effective.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of adjustable height steel stair, its
It is characterized in that：The girder steel laid including two groups of inclinations and the marking time between girder steel described in two groups by connector
Plate, girder steel described in two groups are laid at grade in parallel laying and girder steel described in two groups；
Girder steel described in every group includes upper girder steel and the lower girder steel below the upper girder steel, the upper girder steel and lower steel
Beam is in parallel laying, and the upper girder steel is connected with lower girder steel by multiple supporting rods, and the upper end branch of the supporting rod withstands on described
In upper girder steel, the lower end of the supporting rod is fixedly connected with lower girder steel, is offered in the upper girder steel and lower girder steel and multiple is supplied institute
State the mounting hole that connector passes through；
The quantity of the step plate is multiple, and multiple step plates are between waiting from top to bottom along the girder steel length direction
Away from laying, multiple step plates are parallel to each other and are in horizontally disposed, and each between the step plate and the girder steel
Angle is 21 °~40 °, and the distance between two neighboring step plate is 120mm~230mm, and the rear end of the step plate passes through
Connector is connected with upper girder steel, and the front end of the step plate is connected by connector with lower girder steel.
A kind of above-mentioned adjustable height steel stair, it is characterized in that：The upper girder steel and lower girder steel are channel steel, the channel steel
Notch set outwardly, the mounting hole is arranged on the waist center line of the channel steel.
A kind of above-mentioned adjustable height steel stair, it is characterized in that：Under the rear end of the step plate is provided with straight down
Bending segment, the front end of the step plate are provided with upper bending segment straight up, the lower bending segment and the upper bending segment
It is highly identical, and the height is respectively less than 60mm.
A kind of above-mentioned adjustable height steel stair, it is characterized in that：The connector is screw rod, one end of the screw rod and institute
Step plate welding is stated, the other end of the screw rod is connected with the girder steel.
A kind of above-mentioned adjustable height steel stair, it is characterized in that：Multiple mounting holes in the upper girder steel are described in
The length direction of upper girder steel is equidistantly laid, and multiple mounting holes in the lower girder steel are along between length direction of lower girder steel etc.
Away from laying.
A kind of above-mentioned adjustable height steel stair, it is characterized in that：Length direction of multiple supporting rods along the girder steel
Uniformly distributed, each supporting rod is adjusting screw rod with the perpendicular laying of the girder steel, the supporting rod, the adjusting spiral shell
The lower end of bar is fixedly connected with the lower girder steel by adjusting nut and screwed retaining ring, and the adjusting nut is arranged on the lower steel
The top of beam and laying is bonded with the lower girder steel, the screwed retaining ring be arranged on the lower part of the lower girder steel and with the lower steel
Beam fitting is laid.
A kind of above-mentioned adjustable height steel stair, it is characterized in that：Further include the railing for being arranged on girder steel top described in every group
Handrail, the accommodation rail are connected as one by multiple vertically arranged upright bars with the girder steel, and the accommodation rail is by more
The square tube composition of a laying vertically parallel with the girder steel, each square tube are fixedly connected with multiple upright bars.
The utility model has the following advantages compared with prior art：
1st, height-adjustable steel stair is simple in structure and simple installation, input cost are relatively low.
2nd, height-adjustable steel stair is reasonable in design, by adjusting the distance between upper girder steel and lower girder steel, adjusts
Angle between whole step plate and the girder steel.
3rd, connected in height-adjustable steel stair between step plate and the girder steel by screw rod, it is then tight with nut
Gu and connected between upper girder steel and lower girder steel by screw rod and fastened and adjusted by adjustable nut upper girder steel and lower girder steel it
Between distance, it is easy for installation, and install when occupy little space, use flexible operation mode.
4th, the step plate of height-adjustable steel stair uses checkered steel plate bending forming, good integrity, and saves point
The time of block installation and the use of connector, it is cost-effective.
5th, height-adjustable steel stair week is gone on different height landing beam in use, without being cut to steel stair
Cut, unclamp the nut between step plate and the girder steel, while unscrew the adjusting nut between upper girder steel and lower girder steel, according to flat
Platform depth of beam, which adjusts the distance between upper girder steel and lower girder steel, makes step plate pass through the screw rod between step plate and the girder steel
The level of marking time is turned to, it is easy to use, suitable for requirement of the different height landing beam to steel stair.
6th, according to the length of landing beam, height-adjustable steel stair can be assembled for two across or multispan combined altitudes it is adjustable
The steel stair of section, using and adjacent two only adjusted adjacent two across combined altitudes between the adjustable steel stair of combined altitudes
Steel stair described in the upper and lower end of girder steel be attached by double threaded screw, it is applied widely, connection mode is simple,
Convenient disassembly.
In conclusion the utility model is simple in structure, design reasonable employment effect is good, energy is easy, is rapidly completed steel stair
Installation, and installation process is easily controllable, by adjusting the spacing between upper girder steel and lower girder steel, to adjust step plate and institute
The angle between girder steel is stated, to adapt to the requirement of steel stair needed for different height landing beam, and between step plate and the girder steel
Connected by screw rod, installation, convenient disassembly are cost-effective.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the structure diagram of single span steel stair in the utility model.
Fig. 2 is the left view sectional view of Fig. 1.
Fig. 3-1 is the structure diagram of upper girder steel in the utility model.
Fig. 3-2 is the structure diagram of the utility model lower girder steel.
Fig. 4 is the connection relationship diagram of the utility model step plate and screw rod.
Fig. 5 is the connection relationship diagram of upper girder steel, lower girder steel and step plate in the utility model.
Fig. 5-1 is enlarged drawing at the A in Fig. 5.
Fig. 6 is the usage state diagram of the utility model steel stair.
Fig. 6-1 is enlarged drawing at the B in Fig. 6.
Fig. 7 is the installation method FB(flow block) of the utility model.
Fig. 8 is the structure diagram of the utility model twin spans steel stair.
Description of reference numerals:
1-step plate；2-1-upper girder steel；2-2-lower girder steel；
3-upright bar；4-square tube；5-landing beam；
6-screw rod；7-1-adjusting screw rod；7-2-adjusting nut；
7-3-screwed retaining ring；8-angle steel；9-double threaded screw.
Embodiment
Embodiment 1
A kind of adjustable height steel stair as shown in Figure 1 and Figure 2, including the girder steel laid of two groups of inclinations and pass through
Connector is installed on the step plate 1 between girder steel described in two groups, and girder steel described in two groups is in parallel laying and girder steel cloth described in two groups
If at grade；
Girder steel described in every group includes upper girder steel 2-1 and the lower girder steel 2-2 below the upper girder steel 2-1, it is described on
Girder steel 2-1 is in parallel laying with lower girder steel 2-2, and the upper girder steel 2-1 is connected with lower girder steel 2-2 by multiple supporting rods, described
The upper end branch of supporting rod is withstood on the upper girder steel 2-1, and the lower end of the supporting rod is fixedly connected with lower girder steel 2-2, it is described on
Multiple mounting holes passed through for the connector are offered on girder steel 2-1 and lower girder steel 2-2；
The quantity of the step plate 1 is multiple, and multiple step plates 1 are in from top to bottom along the girder steel length direction etc.
Spacing is laid, and multiple step plates 1 are parallel to each other and in horizontally disposed, and each step plate 1 and the girder steel it
Between angle be 21 °~40 °, the distance between two neighboring step plate 1 is 120mm~230mm, after the step plate 1
End is connected by connector with upper girder steel 2-1, and 1 front end of step plate is connected by connector with lower girder steel 2-2.
In actual use, the angle between step plate 1 and the girder steel is α, the angle between the girder steel and ground
For α, the length of the girder steel is L, and the height of height or landing beam 5 away from ground of steel stair is H, upper girder steel 2-1 and lower girder steel
The distance between 2-2 is h, and the width of step plate 1 is B, then there are following relationship：Sin α=H/L=h/B, in the present embodiment,
α is 21 °~40 °, and L is 3200mm~3550mm, and B is 275mm or 295mm, when the height or landing beam 5 of steel stair are away from ground
When height H changes, the distance between upper girder steel 2-1 and lower girder steel 2-2 are adjusted, makes the angle [alpha] between step plate 1 and the girder steel
Equal to the angle between the girder steel and ground.
In actual use, the distance between upper girder steel 2-1 and lower girder steel 2-2 can be adjusted, and ensure the height in steel stair
During change, step plate 1 is set to be horizontally disposed by adjusting the distance between upper girder steel 2-1 and lower girder steel 2-2.
The installation hole count that the installation hole number and lower girder steel 2-2 that the quantity of the step plate 1, upper girder steel 2-1 are opened up open up
Measure all same.
In the present embodiment, the upper girder steel 2-1 and lower girder steel 2-2 are channel steel, and the notch of the channel steel is set outwardly, institute
Mounting hole is stated to be arranged on the waist center line of the channel steel.
In actual use, upper girder steel 2-1 and lower girder steel 2-2 is No. 10 channel steels, between upper girder steel 2-1 and lower girder steel 2-2
Distance be 100mm~180mm, the distance between upper girder steel 2-1 and lower girder steel 2-2 are upper girder steel 2-1 and lower girder steel 2-2 centers
Between distance.
In actual use, the notch direction of the channel steel outwardly, facilitates the installation of step plate 1, improves what step plate 1 was installed
Stability, and the length of connector is reduced, save material.
As shown in Fig. 3-1, Fig. 3-2, in actual use, the multiple mounting holes opened up on upper girder steel 2-1 and lower girder steel 2-2 it
Between distance it is equal, cut upper girder steel 2-1 bottoms and upper end, make upper the groove leg and channel steel waist of upper girder steel 2-1 bottoms
Between angle be 40 °, it is 40 ° to make angle between lower the groove leg and channel steel waist of upper girder steel 2-1 upper ends, upper after cutting
Girder steel 2-1 is parallelogram, cuts lower girder steel 2-2 bottoms and upper end, makes upper the groove leg and groove of lower girder steel 2-2 bottoms
Angle between steel waist is 40 °, and it is 40 ° to make the angle between upper the groove leg and channel steel waist of lower girder steel 2-2 upper ends, cutting
Lower girder steel 2-2 afterwards is trapezoidal；Since the angle α between each step plate 1 and the girder steel is 21 °~40 °, then institute
It is also α to state the angle between girder steel and ground, and therefore, the upper girder steel 2-1 after cutting is parallelogram, and lower girder steel 2-2 is ladder
Shape, facilitate the installation of the girder steel and after installation is complete steel stair stability and globality.
As shown in figure 4, in the present embodiment, the rear end of the step plate 1 is provided with lower bending segment straight down, described to step on
The front end of step plate 1 is provided with upper bending segment straight up, and the lower bending segment is identical with the height of the upper bending segment, and institute
State height and be respectively less than 60mm.
In actual use, step plate 1 is the checkered steel plate bending forming that thickness is 3mm, is had the function that anti-skidding while whole
Body is good, and saves the time of piecemeal installation and the use of connector, cost-effective.
In actual use, the bending segment of step plate 1 straight down is identical with the height of bending segment straight up, it is therefore an objective to
Easy to process and installation, while when ensureing stair activity, foot will not be treaded in the gap between two step plates 1, it is ensured that the person
Safety；The height of bending segment is respectively less than 60mm, it is therefore an objective to ensures there is certain gap between two neighboring step plate 1, it is ensured that steel
During stair height change, the change of distance between two neighboring step plate 1, makes each step plate 1 be adjustable as being horizontally disposed with.
In actual use, the connector is screw rod 6, and one end of the screw rod 6 is welded with the step plate 1, the spiral shell
The other end of bar 6 is connected with the girder steel.
In actual use, a diameter of 16mm of screw rod 6, length 200m, each step plate 1 is in the width direction under both ends
Portion is respectively welded screw rod 6, and each step plate 1 welds 4 screw rods 6, every screw rod 6 apart from 1 outer edge 10mm~15mm of step plate,
Weld length 160mm between every screw rod 6 and step plate 1, after the other end of screw rod 6 passes through mounting hole, by with 6 phase of screw rod
The nut of cooperation is fixedly connected.
In actual use, on upper girder steel 2-1 and lower girder steel 2-2, along the center line of channel steel, between multiple mounting holes away from
Mounting hole can be passed through from for 320mm, a diameter of 18mm of mounting hole, guarantee screw rod 6.
In actual use, multiple mounting holes on the upper girder steel 2-1 are along length direction of the upper girder steel 2-1 etc.
Spacing is laid, and multiple mounting holes on the lower girder steel 2-2 are equidistantly laid along the length direction of lower girder steel 2-2.
As shown in Fig. 5, Fig. 5-1, multiple supporting rods are uniformly distributed along the length direction of the girder steel, each branch
Strut is adjusting screw rod 7-1, the lower end of the adjusting screw rod 7-1 and institute with the perpendicular laying of the girder steel, the supporting rod
State lower girder steel 2-2 to be fixedly connected with screwed retaining ring 7-3 by adjusting nut 7-2, the adjusting nut 7-2 is arranged on the lower steel
The top of beam 2-2 and laying is bonded with the lower girder steel 2-2, the screwed retaining ring 7-3 is arranged on the lower part of the lower girder steel 2-2
And it is bonded laying with the lower girder steel 2-2.
In actual use, the quantity of supporting rod is preferably 4, uniformly distributed along the length direction of the girder steel, works as steel
Go in stair week on different height landing beam 5 in use, by adjusting the distance between upper girder steel 2-1 and lower girder steel 2-2, make to step on
Step plate 1 is horizontally disposed, then adjusts adjusting nut 7-2, one end of adjusting screw rod 7-1 is held out against the lower end of upper girder steel 2-1, so
After tighten screwed retaining ring 7-3, play the role of to upper girder steel 2-1 fixed and support.
As shown in Fig. 6, Fig. 6-1, in the present embodiment, the accommodation rail for being arranged on girder steel top described in every group, institute are further included
State accommodation rail to be connected as one with the girder steel by multiple vertically arranged upright bars 3, the accommodation rail is by multiple along perpendicular
Formed to the square tube 4 of laying parallel with the girder steel, each square tube 4 is fixedly connected with multiple upright bars 3.
In actual use, upright bar 3 is fixedly connected by the bolt of a diameter of 10mm with upper girder steel 2-1 and lower girder steel 2-2, is stood
Bar 3 is the angle bar of 40mm × 40mm, and quantity of the steel stair per edge-on bar 3 is 3~4.
In actual use, quantity of the steel stair per side pipe 4 is 3~4, and square tube 4 passes through a diameter of 10mm's with upright bar 3
Bolt is fixedly connected, and square tube 4 and 3 junction of upright bar, an opening coordinated with square tube 4 is cut out by the angle bar of upright bar 3, convenient
Connection between square tube 4 and upright bar 3, meanwhile, make the accommodation rail that installation is complete that there is certain aesthetics, and good integrity,
If square tube 4 and 3 junction of upright bar, the angle bar of upright bar 3 does not cut out an opening coordinated with square tube 4, square tube 4 and angle bar
After connection, square tube 4 upright bar 3 can protrude installation relatively in 1 side of step plate, influence pedestrian's stair activity, and influence beautiful.
In actual use, the upper and lower end of square tube 4 is each attached in upright bar 3, ensures the upper end of square tube 4 with
End is concordant with upright bar 3.
As shown in fig. 7, the installation method of the present embodiment, the girder steel and accommodation rail of the stair both sides are pacified at the same time
Dress, this method comprise the following steps：
Step 1: the preliminary installation of the girder steel：The girder steel is installed in packet, and one end of lower girder steel 2-2 is consolidated
It is scheduled on landing beam 5, the other end fixes on the ground, and upper girder steel 2-1 and lower girder steel 2-2 is fixed temporarily by supporting rod；
During actual installation, the upper and lower end of lower girder steel 2-2 is respectively welded the angle steel 8 of 50mm × 50mm, installation
When, the angle steel 8 of lower girder steel 2-2 upper ends is fixed on landing beam 5 by expansion bolt first, is used to support lower girder steel 2-2,
Prevent lower girder steel 2-2 from gliding, then the angle steel 8 of lower girder steel 2-2 bottoms is fixedly connected with the ground by expansion bolt, is used for
Strengthen the overall stability of steel stair, equally, the upper and lower end of upper girder steel 2-1 is respectively welded the angle of 50mm × 50mm
Steel 8, after the completion of lower girder steel 2-2 fixed installations, upper girder steel 2-1 is first without fixation, when being installed so as to later stage step plate 1, on
The adjustment of girder steel 2-1 positions.
Step 2: the installation of step plate and the fixation of upper girder steel：By step plate 1 along the girder steel length direction from top to bottom
The rear end of step plate, is penetrated first mounting hole of upper girder steel 2-1, step plate by parallel successively and uniform installation by connector
Front end by connector pass through lower girder steel 2-2 first mounting hole, adjust upper girder steel 2-1 and lower girder steel 2-2 between away from
From the supporting rod of interim fixed upper girder steel 2-1 and lower girder steel 2-2 is fixed with screwed retaining ring 7-3；By second step plate 1
Rear end penetrates second mounting hole of upper girder steel 2-1 by connector, and the front end of step plate passes through lower girder steel 2-2 by connector
Second mounting hole, continue that next step plate 1 is installed successively；
During actual installation, step plate 1 along the girder steel length direction parallel successively and uniform installation from top to bottom, be in order to
Facilitate the installation of step plate 1, if step plate 1 is installed from bottom to top, need to set up in the both sides of steel stair and pacify for installer
The landing slab of dress, extends the duration and there are some potential safety problems；
During actual installation, first step plate 1 is assured that between upper girder steel 2-1 and lower girder steel 2-2 after installation is complete
Distance, at this time, one end of adjusting screw rod 7-1 is held out against upper girder steel 2-1 by adjusting nut 7-2, then tighten screwed retaining ring
7-3, the position of fixed upper girder steel 2-1, after installation is complete after step plate 1, passes through expansion by the angle steel 8 of upper girder steel 2-1 upper ends
Bolt is fixed on landing beam 5, is then fixedly connected with the ground the angle steel 8 of upper girder steel 2-1 bottoms by expansion bolt.
Step 3: the installation of accommodation rail, including procedure below：
Step 301, the installation of upright bar：The installation of upright bar 3 is carried out from top to bottom along the length direction of the girder steel successively, it is first
The lower end of first upright bar 3 is fixedly connected on the upper end of lower girder steel 2-2, is then fixedly connected with upright bar 3 with upper girder steel 2-1；Repeat
Above-mentioned steps, carry out the installation of next upright bar 3；
The installation of step 302, square tube：Multiple square tubes are vertically installed successively from bottom to top；By one end of square tube 4
The upright bar set with lower girder steel 2-2 upper ends is fixedly connected, and the other end is fixedly connected with the upright bar 3 of lower girder steel 2-2 bottoms, side
The middle part of pipe 4 is fixedly connected with the upright bar 3 of relevant position, and the square tube 4 that installation is complete is parallel with the girder steel；Repeat above-mentioned
Step, carries out the installation of next square tube 4.
In the present embodiment, before steel girder erection described in step 1, the absolute altitude position of girder steel 2-2 is fixed in 5 subscript of landing beam
Put, and to the step plate 1, the girder steel, square tube 4 and the external coating finishing coat of upright bar 3, increase the durability of steel stair.
During actual installation, the position of lower girder steel 2-2 is come definite, the position of upper girder steel 2-1 according to the height of landing beam 5
It is according in 1 installation process of step plate, being to adjust after step plate 1 is in horizontally disposed between upper girder steel 2-1 and lower girder steel 2-2
Distance come it is definite.
In the present embodiment, before the installation of step 2 step plate 1, step plate 1 is processed, the steel plate of fixed dimension will be cut into,
According to the design size of step plate 1, by the rear end of step plate 1,90-degree bent forms lower bending segment straight down, before step plate 1
End straight up 90-degree bent form bending segment, step plate 1 in the width direction both ends lower part distinguish welded connections.
Embodiment 2
As shown in figure 8, in the present embodiment, according to the length of landing beam 5, required steel stair for two across or multispan group
Close height-adjustable steel stair, described two across or the adjustable steel stair of multispan combined altitudes installation steps according to implementation
Step one, step 2 in example 1 complete at the same time two across or the adjustable steel stair of multispan combined altitudes described in girder steel and mark time
After the installation of plate 1, by adjacent two across the upper and lower end of the girder steel be fixedly connected respectively by double threaded screw 9；So
Afterwards described two across or the adjustable steel stair of multispan combined altitudes both sides according to embodiment 1 in step 3 carry out railing help
The installation of hand.
Embodiment 3
In the present embodiment, the height H of height or landing beam 5 away from ground of steel stair is 1400mm, and the width of step plate 1 is
275mm, the quantity of step plate 1 is 10, and the girder steel length L is to be opened respectively on 3300mm, upper girder steel 2-1 and lower girder steel 2-2
If the quantity of mounting hole is 10, the distance of two neighboring mounting hole is 320mm；
According to relational expression：Sin α=H/L=h/B, then the angle α between the girder steel and ground is 25 °, upper girder steel 2-1
The distance between lower girder steel 2-2 is that h is 116.7mm；
According to the installation steps of 1 steel stair of embodiment, the installation of adjustable steel stair in the present embodiment is carried out.
Embodiment 4
In the present embodiment, the height H of height or landing beam 5 away from ground of steel stair is 2000mm, and the width of step plate 1 is
275mm, the quantity of step plate 1 is 10, and the girder steel length L is to be opened respectively on 3300mm, upper girder steel 2-1 and lower girder steel 2-2
If the quantity of mounting hole is 10, the distance of two neighboring mounting hole is 320mm；
According to relational expression：Sin α=H/L=h/B, then the angle α between the girder steel and ground is 37 °, upper girder steel 2-1
The distance between lower girder steel 2-2 is that h is 166.7mm；
Steel stair in embodiment 3 is dismantled, when steel stair is dismantled, by between step plate 1 and the girder steel
Screw rod 6 on the nut that is used cooperatively unscrew, will be used cooperatively between upper girder steel 2-1 and lower girder steel 2-2 with adjusting screw rod 7-1
Adjusting nut 7-2 and screwed retaining ring 7-3 unclamp after, unscrew the spiral shell that upright bar 2 is fixedly connected with upper girder steel 2-1 and lower girder steel 2-2
After bolt, upper girder steel 2-1 and the expansion bolt of lower girder steel 2-2 upper and lower end, turnover steel stair to this implementation are dismantled respectively
Needed for example at landing beam 5, according to the installation steps of steel stair in embodiment 1, adjustable steel stair in the present embodiment are carried out
Installation.
The above, is only the preferred embodiment of the utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (7)
- A kind of 1. adjustable height steel stair, it is characterised in that：The girder steel laid including two groups of inclinations and installed by connector Step plate (1) between girder steel described in two groups, girder steel described in two groups are laid in same in parallel laying and girder steel described in two groups In plane；Girder steel described in every group includes upper girder steel (2-1) and the lower girder steel (2-2) below the upper girder steel (2-1), described Upper girder steel (2-1) is in parallel laying with lower girder steel (2-2), and the upper girder steel (2-1) and lower girder steel (2-2) pass through multiple supporting rods Connection, the upper end branch of the supporting rod are withstood in the upper girder steel (2-1), and the lower end of the supporting rod and lower girder steel (2-2) are solid It is fixed to connect, offer multiple mounting holes passed through for the connector in the upper girder steel (2-1) and lower girder steel (2-2)；The quantity of the step plate (1) is multiple, and multiple step plates (1) are in from top to bottom along the girder steel length direction etc. Spacing is laid, and multiple step plates (1) are parallel to each other and are in horizontally disposed, and each step plate (1) and steel Angle between beam is 21 °~40 °, and the distance between two neighboring step plate (1) is 120mm~230mm, the step plate (1) rear end is connected by connector with upper girder steel (2-1), and the front end of the step plate (1) passes through connector and lower girder steel (2- 2) connect.
- A kind of 2. adjustable height steel stair described in accordance with the claim 1, it is characterised in that：The upper girder steel (2-1) and under Girder steel (2-2) is channel steel, and the notch of the channel steel is set outwardly, and the mounting hole is arranged on the waist center line of the channel steel On.
- 3. according to a kind of adjustable height steel stair described in claim 1 or 2, it is characterised in that：After the step plate (1) End is provided with lower bending segment straight down, and the front end of the step plate (1) is provided with upper bending segment straight up, under described Bending segment is identical with the height of the upper bending segment, and the height is respectively less than 60mm.
- 4. according to a kind of adjustable height steel stair described in claim 1 or 2, it is characterised in that：The connector is screw rod (6), one end of the screw rod (6) is welded with the step plate (1), and the other end of the screw rod (6) is connected with the girder steel.
- 5. according to a kind of adjustable height steel stair described in claim 1 or 2, it is characterised in that：On the upper girder steel (2-1) Multiple mounting holes equidistantly laid along the length direction of the upper girder steel (2-1), it is multiple on the lower girder steel (2-2) The mounting hole is equidistantly laid along the length direction of lower girder steel (2-2).
- 6. according to a kind of adjustable height steel stair described in claim 1 or 2, it is characterised in that：Multiple supporting rod edges The length direction of the girder steel is uniformly distributed, and each supporting rod is with the perpendicular laying of the girder steel, the supporting rod Adjusting screw rod (7-1), lower end and the lower girder steel (2-2) of the adjusting screw rod (7-1) pass through adjusting nut (7-2) and anticreep Nut (7-3) is fixedly connected, the adjusting nut (7-2) be arranged on the top of the lower girder steel (2-2) and with the lower girder steel (2-2) fitting lay, the screwed retaining ring (7-3) be arranged on the lower part of the lower girder steel (2-2) and with the lower girder steel (2-2) Fitting is laid.
- 7. according to a kind of adjustable height steel stair described in claim 1 or 2, it is characterised in that：Further include and be arranged on every group The accommodation rail on the girder steel top, the accommodation rail are connected as by multiple vertically arranged upright bars (3) with the girder steel One, the accommodation rail are made of the square tube (4) of multiple layings vertically parallel with the girder steel, each square tube (4) It is fixedly connected with multiple upright bars (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720953496.3U CN207296210U (en) | 2017-08-02 | 2017-08-02 | A kind of adjustable height steel stair |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720953496.3U CN207296210U (en) | 2017-08-02 | 2017-08-02 | A kind of adjustable height steel stair |
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| CN207296210U true CN207296210U (en) | 2018-05-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797908A (en) * | 2018-06-08 | 2018-11-13 | 中建五局土木工程有限公司 | Assembled stair and its installation method and building engineering construction method |
| CN111015059A (en) * | 2019-12-29 | 2020-04-17 | 陕西建工第三建设集团有限公司 | Pipeline and groove box mounting bracket die and mounting method |
-
2017
- 2017-08-02 CN CN201720953496.3U patent/CN207296210U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797908A (en) * | 2018-06-08 | 2018-11-13 | 中建五局土木工程有限公司 | Assembled stair and its installation method and building engineering construction method |
| CN108797908B (en) * | 2018-06-08 | 2024-04-30 | 中建五局土木工程有限公司 | Assembled stair and installation method thereof and construction method of building engineering |
| CN111015059A (en) * | 2019-12-29 | 2020-04-17 | 陕西建工第三建设集团有限公司 | Pipeline and groove box mounting bracket die and mounting method |
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