CN207672891U - A kind of assembly concrete stair - Google Patents

A kind of assembly concrete stair Download PDF

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Publication number
CN207672891U
CN207672891U CN201721826545.3U CN201721826545U CN207672891U CN 207672891 U CN207672891 U CN 207672891U CN 201721826545 U CN201721826545 U CN 201721826545U CN 207672891 U CN207672891 U CN 207672891U
Authority
CN
China
Prior art keywords
girder steel
tablet
bar
sliding
sliding panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201721826545.3U
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Chinese (zh)
Inventor
陈作荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Fangcun Building Engineering Co Ltd
Original Assignee
Guangzhou Fangcun Building Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Fangcun Building Engineering Co Ltd filed Critical Guangzhou Fangcun Building Engineering Co Ltd
Priority to CN201721826545.3U priority Critical patent/CN207672891U/en
Application granted granted Critical
Publication of CN207672891U publication Critical patent/CN207672891U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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  • Steps, Ramps, And Handrails (AREA)

Abstract

The utility model discloses a kind of assembly concrete stair, it solves the problems, such as to be inconvenient to install, its key points of the technical solution are that including pedestal and tablet, pedestal is slidably connected the sliding panel of oriented flatbed horizontal sliding, it is equipped with and is mutually parallel and isometric the first girder steel and the second girder steel between tablet and sliding panel, first girder steel and the second girder steel both ends are respectively hinged with tablet and sliding panel, first girder steel is rotatably connected to the pedal parallel with sliding panel, pedal and the second girder steel are rotatablely connected, center of rotation of the pedal on the first girder steel is not overlapped with center of rotation of the pedal on the second girder steel, pedestal is equipped with the driving portion for driving tablet adjustment height, achieve the effect that facilitate installation.

Description

A kind of assembly concrete stair
Technical field
The utility model is related to assembled stair, more particularly to a kind of assembly concrete stair.
Background technology
Assembly concrete stair refer to the first prefabricated completion of some or all of stair component, and it is existing then to transport construction , then component is installed into the stair to be formed by reliable connection type.It is fast and production cost is lower excellent with construction speed Point, and the influence to construction environment can be reduced.
Notification number is that the Chinese utility model of CN205206171U discloses shaped steel and steel reinforced concrete assembling stair, is wrapped It includes prefabricated girder steel I, prefabricated girder steel II, multiple steel columns, stair corner tablet, multiple support bases and is arranged in prefabricated girder steel I With the pedal between prefabricated girder steel II, pedal and the prefabricated Bolted angle connection of prefabricated girder steel I, pedal and the prefabricated angle of prefabricated girder steel II Steel connects;Multiple bolts are arranged in the bottom of stair corner tablet in a manner of bar planting, and the upper end of support base is in a manner of bar planting Multiple bolts are uniformly arranged, the bolt of stair corner flat plate bottom passes through the mounting hole on upper steel plate, and passes through nut check.
In the building course of stair, the height that stair are set according to the actual conditions of building, and the assembly are generally required Formula stair can not easily adjust its height.Therefore there are problems that being inconvenient to install.
Utility model content
The purpose of this utility model is to provide a kind of assembly concrete stair, which, which has, facilitates installation Effect.
The above-mentioned technical purpose of the utility model technical scheme is that:
A kind of assembly concrete stair, including pedestal and tablet, the pedestal are slidably connected the sliding of oriented flatbed horizontal Sliding panel, be equipped with and be mutually parallel and isometric the first girder steel and the second girder steel between tablet and sliding panel, first girder steel Respectively hinged with tablet and sliding panel with the second girder steel both ends, first girder steel is rotatably connected to parallel with sliding panel step on Plate, the pedal and the second girder steel are rotatablely connected, and center of rotation of the pedal on the first girder steel be not with pedal in the second steel Center of rotation on beam overlaps, and the pedestal is equipped with the driving portion for driving tablet adjustment height.
Setting in this way:It drives tablet to change height using driving portion, tablet is made to adapt to different requirement for height, Play the effect for improving applicability and facilitating installation.When tablet moves, tablet drives the first girder steel and the activity of the second girder steel, and And sliding panel can follow the first girder steel and the movement of the second girder steel to be moved on pedestal, can improve the scope of activities of tablet.
When plate height changes, the first girder steel and the second girder steel change angle.Because the first girder steel and the second girder steel are flat It is capable and isometric, so the first girder steel, tablet, the second girder steel and sliding panel collectively constitute a parallelogram, when the first girder steel The state being mutually parallel can be kept when changing angle with the second girder steel.So that the pedal parallel with sliding panel can follow first Girder steel and the second girder steel rotate on sliding panel, meanwhile, pedal can keep the state parallel with sliding panel, steady to enable a person to Step on pedal, play effect easy to use.To realize during adjusting plate height, the first girder steel and second Girder steel keeping parallelism, and pedal keeps horizontality, plays the effect for facilitating installation.
The further setting of the utility model:The driving portion includes fixing sleeve, sliding bar and turning set, the fixing sleeve Lower end is fixedly connected on pedestal, and the sliding bar is slidably connected with fixing sleeve, and the sliding bar upper end is fixedly connected on tablet, institute Turning set is stated to be rotatablely connected with fixing sleeve and be threadedly coupled with sliding bar.
Setting in this way:The rotary motion set on fixing sleeve makes turning set drive the sliding bar being threadedly coupled with it Mobile, sliding bar drives the tablet movement for being secured to connection.To realize that driving tablet adjusts the function of height, the dress is improved Applicability with formula concrete staircase.
The further setting of the utility model:The fixing sleeve and sliding bar are vertically arranged.
Setting in this way:Sliding bar can slide vertically in fixing sleeve, drive tablet vertically movable, can play and facilitate tune Save the effect of plate height.When tablet is under pressure, tablet transfers the pressure on sliding bar and fixing sleeve, is vertically arranged Sliding bar and fixing sleeve ratio are less easily distorted because of vertical pressure, play raising stability.
The further setting of the utility model:The turning set is fixedly connected with the driven wheel of differential of the coaxial heart, institute It states fixing sleeve and is rotatably connected to horizontally disposed shaft, the shaft is fixedly connected with the active conical tooth engaged with driven wheel of differential Wheel.
Setting in this way:Rotate horizontally disposed shaft, drive drive bevel gear rotation, drive bevel gear drive with Its driven wheel of differential engaged rotation, driven wheel of differential drive turning set rotation.The function of realizing driving turning set rotation, also can The effect for facilitating rotary motion to cover is played to a certain extent.
The further setting of the utility model:The shaft is fixedly connected with handle.
Setting in this way:When needing to adjust the height of tablet, swing handle makes handle drive and is secured to connection Shaft rotates, and to drive turning set to rotate, turning set drives sliding bar and tablet vertically movable.It plays and facilitates adjustment tablet high The effect of degree.
The further setting of the utility model:The fixing sleeve is fixedly connected with abutting plate, and the handle is threaded with With the screw for abutting plate abutting.
Setting in this way:When plate height need not be adjusted, screw can be tightened on handle, made screw and abutted Plate pushes against, and abuts and generates frictional force between plate and screw, prevents screw and handle from being rotated on fixing sleeve by frictional force.It plays It improves stability and facilitates the effect of installation.
The further setting of the utility model:The active conical tooth tooth number is less than the driven wheel of differential number of teeth.
Setting in this way:Play the role of adjusting the transmission ratio between drive bevel gear and driven wheel of differential, make from The rotating speed of dynamic bevel gear is less than the rotating speed of drive bevel gear, plays the role of the height for facilitating adjustment tablet.Simultaneously can improve from The torque of dynamic bevel gear can also play the effect for facilitating adjustment plate height.
The further setting of the utility model:The sliding panel is fixedly connected with the support at the first girder steel lower end Bar, the supporting rod are hinged with the bar parallel with the first girder steel, are equipped with and support between the bar and the first girder steel The parallel interlocking bar of bar, the interlocking bar both ends are hinged with bar and the first girder steel respectively.
Setting in this way:Because supporting rod is parallel with interlocking bar, and the first girder steel is parallel with bar, therefore supports Bar, bar, interlocking bar and the first girder steel can form parallelogram.When the first girder steel is swung on sliding panel, bar The first girder steel can be followed to adjust the angle, and supporting rod keeps vertical state with interlocking bar, makes between bar and the first girder steel Difference in height keeps stablizing, so that people of the station on pedal can easily hold the effect of handrail.It plays easy to use and square Just the effect installed.
The further setting of the utility model:Pedal includes metallic plate and concrete slab, the metallic plate it is horizontally disposed and It is rotatablely connected respectively with the first girder steel and the second girder steel, the concrete slab is fixedly connected on metallic plate lower end.
Setting in this way:It during personnel are by stair, steps on a metal plate, can play prevents concrete slab excessive The effect of abrasion improves service life.Meanwhile concrete slab is supported metallic plate lower end, improves stability.
The further setting of the utility model:The one end of the sliding panel far from tablet is equipped with leading of being abutted with ground Wheel.
Setting in this way:The guide wheel abutted with ground can provide support force to sliding panel, play and improve stability Effect.Meanwhile can also be slided on pedestal convenient for sliding panel, play the role of facilitating installation.
In conclusion the utility model has the advantages that:After pedestal is moved to suitable position, pass through handle Rotating shaft, shaft are moved turning set by the transmission belt of drive bevel gear and driven wheel of differential and are rotated, and turning set drives sliding bar It is slid vertically on fixing sleeve, so as to adjust the height of sliding bar and tablet.Plate height change during, the first girder steel and Second girder steel follows tablet to be swung on sliding panel, and the height of pedal is enable to follow the variation of plate height and change, the side of playing Just the effect installed.Meanwhile interlocking bar drives handrail to be rotated on supporting rod, and bar is made to keep the shape parallel with the first girder steel State, and the difference in height of bar and the first girder steel keeps certain achievees the effect that facilitate installation bar and easy to use.Tablet After height is adjusted, rotation screw makes screw be pushed against with plate is abutted, and to locked hand, plays the role of improving stability. To achieve the effect that facilitate installation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present embodiment;
Fig. 2 is the structural schematic diagram of the first girder steel and the second girder steel in the present embodiment;
Fig. 3 is the enlarged drawing at A in Fig. 2;
Fig. 4 is the structural schematic diagram of pedal in the present embodiment.
Reference numeral:11, pedestal;12, sliding panel;13, guide wheel;21, the first girder steel;22, the second girder steel;23, pedal; 24, supporting rod;25, bar;26, interlocking bar;27, metallic plate;28, concrete slab;31, tablet;32, fixing sleeve;33, it slides Bar;34, turning set;41, driven wheel of differential;42, shaft;43, drive bevel gear;44, handle;45, plate is abutted;46, screw.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
A kind of assembly concrete stair, as depicted in figs. 1 and 2, including pedestal 11 and tablet 31, tablet 31 are located at pedestal Pedestal 11, can be placed on the building of lower layer by 11 tops, and tablet 31 with the building on upper layer for docking.Pedestal 11 slides The sliding panel 12 for connecting the horizontal sliding of oriented tablet 31 is equipped between tablet 31 and sliding panel 12 and is mutually parallel and isometric first Girder steel 21 and the second girder steel 22, the first girder steel 21 and 22 both ends of the second girder steel are respectively hinged with tablet 31 and sliding panel 12, make A parallelogram can be formed by obtaining the first girder steel 21, sliding panel 12, the second girder steel 22 and tablet 31.Make 21 He of the first girder steel The state of second girder steel, 22 keeping parallelism, and the state of tablet 31 and 12 keeping parallelism of sliding panel, so that tablet 31 is kept Horizontality plays the role of easy to use and facilitates installation tablet 31.
When tablet 31 moves down, the first girder steel 21 and the second girder steel 22 follow tablet 31 to lower swing, meanwhile, sliding Plate 12 is slided to the direction far from tablet 31 on the pedestal 11.When tablet 31 moves up, the first girder steel 21 and the second girder steel 22 follow tablet 31 to be swung up, meanwhile, sliding panel 12 is slided to close to the direction of tablet 31 on the pedestal 11.
First girder steel 21 is rotatably connected to multiple pedals 23 parallel with sliding panel 12, and pedal 23 and the second girder steel 22 rotate Connection, center of rotation of the pedal 23 on the first girder steel 21 are not overlapped with center of rotation of the pedal 23 on the second girder steel 22.Make It obtains the first girder steel 21, sliding panel 12, the second girder steel 22 and pedal 23 and forms parallelogram, reach pedal 23 and sliding panel 12 is flat Capable effect.In swing process, pedal 23 keeps horizontal state, plays easy to use for first girder steel 21 and the second girder steel 22 Pedal 23 and the effect for facilitating installation.
Pedestal 11 is equipped with the driving portion for driving tablet 31 to adjust height, and driving portion includes fixing sleeve 32, sliding bar 33 and turns Dynamic set 34.32 lower end of fixing sleeve is fixedly connected on pedestal 11, and fixing sleeve 32 is vertically arranged, and sliding bar 33 is vertically sliding with fixing sleeve 32 Dynamic connection, 33 upper end of sliding bar is fixedly connected on tablet 31.When sliding bar 33 slides vertically in fixing sleeve 32, sliding bar 33 Drive tablet 31 vertically movable.Turning set 34 is rotatablely connected with fixing sleeve 32 and is threadedly coupled with sliding bar 33, in fixing sleeve 32 Upper rotary motion set 34, turning set 34 drives the sliding bar 33 being threadedly coupled with it vertically movable on fixing sleeve 32, realizes and drives The vertically movable function of dynamic tablet 31, the height of adjustable screed 31, achievees the effect that facilitate installation according to actual needs.Together When, tablet 31 cannot pull down sliding bar 33 and turning set 34 is driven to rotate, to make sliding bar 33 cover 34 in not rotary motion When it is locked, play the function of locking sliding bar 33, can also achieve the effect that facilitate installation.
The one end of sliding panel 12 far from tablet 31 is equipped with the guide wheel 13 abutted with ground, can play support to sliding panel 12 Effect, play the role of improving stability and it is convenient move sliding panel 12 on the pedestal 11, can also play to a certain extent Facilitate the effect of installation.
Sliding panel 12 is fixedly connected with the supporting rod 24 at 21 lower end of the first girder steel, and supporting rod 24 is hinged with and first The parallel bar 25 of girder steel 21 is equipped with the interlocking bar 26 parallel with supporting rod 24, connection between bar 25 and the first girder steel 21 26 both ends of lever are hinged with bar 25 and the first girder steel 21 respectively.Because bar 25 with the first girder steel 21 parallel and interlocking bar 26 It is parallel with supporting rod 24, so bar 25, supporting rod 24, the first girder steel 21 and interlocking bar 26 can form parallelogram.When First girder steel 21 can drive bar 25 to be swung on supporting rod 24 when being swung on sliding panel 12 by interlocking bar 26, and So that supporting rod 24 and interlocking bar 26 keep vertical state, bar 25 and the difference in height of the first girder steel 21 is made to remain unchanged, To make bar 25 and the difference in height of pedal 23 remain unchanged, bar 25 easy to use can be played and facilitate the effect of installation Fruit.
As shown in Figures 2 and 3, turning set 34 is fixedly connected with the driven wheel of differential 41 of the coaxial heart, 32 turns of fixing sleeve Dynamic to be connected with horizontally disposed shaft 42, shaft 42 is fixedly connected with the drive bevel gear 43 engaged with driven wheel of differential 41.Turn Turn axis 42, shaft 42 drive the drive bevel gear 43 for being secured to connection to rotate, and the drive of drive bevel gear 43 engages Driven wheel of differential 41 rotates, and driven wheel of differential 41 drives turning set 34 to rotate, and realizes the function that driving turning set 34 rotates, reaches Facilitate the effect of installation.
Shaft 42 is fixedly connected with handle 44, using 44 rotating shaft 42 of handle, can play the work for facilitating rotating shaft 42 With can also play the effect for facilitating installation.Fixing sleeve 32, which is fixedly connected with, abuts plate 45, and handle 44 is threaded with and abuts plate 45 screws 46 pushed against.When the height of tablet 31 need not be adjusted, screw 46 is rotated on handle 44, makes screw 46 and abuts Plate 45 pushes against, and screw 46 generates frictional force between plate 45 with abutting, passes through frictional force and screw 46 and handle 44 is prevented to rotate, realization The function of locked hand 44.It prevents turning set 34 from rotating, to play the role of 31 height of sliding bar 33 and tablet, reaches convenient The effect of installation.
43 number of teeth of drive bevel gear is less than 41 number of teeth of driven wheel of differential, by gear-driven principle, can play adjustment master Transmission ratio between dynamic bevel gear 43 and driven wheel of differential 41.So that the rotating speed of driven wheel of differential 41 is less than drive bevel gear 43 Rotating speed reduces the rotating speed of turning set 34, to reduce the movement speed of sliding bar 33, can play to facilitate adjusting 31 height of tablet Effect, achievees the effect that facilitate installation.Meanwhile the torque of driven wheel of differential 41 can be increased, labour-saving can be played the role of.
As shown in figure 4, pedal 23 includes metallic plate 27 and concrete slab 28, metallic plate 27 is horizontally disposed and respectively with first Girder steel 21 and the rotation connection of the second girder steel 22, concrete slab 28 are fixedly connected on 27 lower end of metallic plate.Personnel move on stair During, it steps down on metallic plate 27, plays the role of reducing 28 wear extent of concrete slab, improve service life.Meanwhile coagulation Native plate 28 is supported 27 lower end of metallic plate, improves stability.
Specific implementation mode:Pedestal 11 is moved to suitable position, then uses hand swing handle 44, handle 44 is made to drive The shaft 42 being secured to rotates, and shaft 42 drives turning set 34 by the transmission of drive bevel gear 43 and driven wheel of differential 41 Rotation.Turning set 34 drives the sliding bar 33 being threadedly coupled with it to be slid vertically on fixing sleeve 32, so that sliding bar 33 is driven flat Plate 31 slides vertically, to play the role of adjusting 31 height of tablet.During tablet 31 highly adjusts, 21 He of the first girder steel Second girder steel 22 follows tablet 31 to be swung on sliding panel 12, and the height of pedal 23 is enable to follow the variation of 31 height of tablet and become Change, to play the role of improving applicability, achievees the effect that facilitate installation.Meanwhile bar 25 can follow the first girder steel 21 Swing and adjust the angle, so that bar 25 is kept the state parallel with the first girder steel 21, bar 25 and the first girder steel 21 Difference in height keeps certain, achievees the effect that facilitate installation and easy to use.It, can be on handle 44 after tablet 31 is highly adjusted Screw 46 is rotated, so that screw 46 is pushed against with plate 45 is abutted, to locked hand 44, so that turning set 34 is kept fixed, play raising The effect of stability.To achieve the effect that facilitate installation.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as all being protected by Patent Law in the right of the utility model.

Claims (10)

1. a kind of assembly concrete stair, including pedestal (11) and tablet (31), it is characterised in that:Pedestal (11) sliding The sliding panel (12) for connecting the horizontal sliding of oriented tablet (31) is equipped between tablet (31) and sliding panel (12) and is mutually parallel and waits Long the first girder steel (21) and the second girder steel (22), first girder steel (21) and the second girder steel (22) both ends respectively with tablet (31) and sliding panel (12) is hinged, and first girder steel (21) is rotatably connected to the pedal parallel with sliding panel (12) (23), institute Pedal (23) and the second girder steel (22) is stated to be rotatablely connected, center of rotation of the pedal (23) on the first girder steel (21) not with step on Center of rotation of the plate (23) on the second girder steel (22) overlaps, and the pedestal (11) is equipped with the drive for driving tablet (31) adjustment height Dynamic portion.
2. assembly concrete stair according to claim 1, it is characterised in that:The driving portion includes fixing sleeve (32), sliding bar (33) and turning set (34), fixing sleeve (32) lower end are fixedly connected on pedestal (11), the sliding bar (33) it is slidably connected with fixing sleeve (32), sliding bar (33) upper end is fixedly connected on tablet (31), the turning set (34) It is rotatablely connected with fixing sleeve (32) and is threadedly coupled with sliding bar (33).
3. assembly concrete stair according to claim 2, it is characterised in that:The fixing sleeve (32) and sliding bar (33) it is vertically arranged.
4. assembly concrete stair according to claim 2, it is characterised in that:The turning set (34) is fixedly connected with The driven wheel of differential (41) of the coaxial heart, the fixing sleeve (32) are rotatably connected to horizontally disposed shaft (42), described turn Axis (42) is fixedly connected with the drive bevel gear (43) engaged with driven wheel of differential (41).
5. assembly concrete stair according to claim 4, it is characterised in that:The shaft (42) is fixedly connected with handle Hand (44).
6. assembly concrete stair according to claim 5, it is characterised in that:The fixing sleeve (32) is fixedly connected with Abut plate (45), the handle (44) be threaded with abut plate (45) push against screw (46).
7. assembly concrete stair according to claim 4, it is characterised in that:Drive bevel gear (43) number of teeth is small In driven wheel of differential (41) number of teeth.
8. assembly concrete stair according to claim 1, it is characterised in that:The sliding panel (12) is fixedly connected with Supporting rod (24) at the first girder steel (21) lower end, the supporting rod (24) are hinged with parallel with the first girder steel (21) help Hand lever (25) is equipped with the interlocking bar (26) parallel with supporting rod (24), institute between the bar (25) and the first girder steel (21) It is hinged with bar (25) and the first girder steel (21) respectively to state interlocking bar (26) both ends.
9. assembly concrete stair according to claim 1, it is characterised in that:Pedal (23) include metallic plate (27) and Concrete slab (28), the metallic plate (27) is horizontally disposed and connects respectively with the first girder steel (21) and the second girder steel (22) rotation It connects, the concrete slab (28) is fixedly connected on metallic plate (27) lower end.
10. assembly concrete stair according to claim 1, it is characterised in that:The sliding panel (12) is far from tablet (31) one end is equipped with the guide wheel (13) abutted with ground.
CN201721826545.3U 2017-12-22 2017-12-22 A kind of assembly concrete stair Expired - Fee Related CN207672891U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721826545.3U CN207672891U (en) 2017-12-22 2017-12-22 A kind of assembly concrete stair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721826545.3U CN207672891U (en) 2017-12-22 2017-12-22 A kind of assembly concrete stair

Publications (1)

Publication Number Publication Date
CN207672891U true CN207672891U (en) 2018-07-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721826545.3U Expired - Fee Related CN207672891U (en) 2017-12-22 2017-12-22 A kind of assembly concrete stair

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CN (1) CN207672891U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110453858A (en) * 2019-08-22 2019-11-15 山东滕建建设集团有限公司 A kind of assembled architecture stair
CN111910855A (en) * 2020-08-08 2020-11-10 江苏新盈装配建筑科技有限公司 Assembled stair for building
CN113309307A (en) * 2021-07-07 2021-08-27 王涛 Assembled stair with height-adjustable step
CN114439170A (en) * 2022-01-24 2022-05-06 湖南麓上住宅工业科技有限公司 Assembled timber structure stair

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110453858A (en) * 2019-08-22 2019-11-15 山东滕建建设集团有限公司 A kind of assembled architecture stair
CN110453858B (en) * 2019-08-22 2020-11-06 山东滕建建设集团有限公司 Assembled stair for building
CN111910855A (en) * 2020-08-08 2020-11-10 江苏新盈装配建筑科技有限公司 Assembled stair for building
CN113309307A (en) * 2021-07-07 2021-08-27 王涛 Assembled stair with height-adjustable step
CN114439170A (en) * 2022-01-24 2022-05-06 湖南麓上住宅工业科技有限公司 Assembled timber structure stair

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20180731

Termination date: 20201222