CN111472504A - Turnover type stair protection railing - Google Patents
Turnover type stair protection railing Download PDFInfo
- Publication number
- CN111472504A CN111472504A CN202010317701.3A CN202010317701A CN111472504A CN 111472504 A CN111472504 A CN 111472504A CN 202010317701 A CN202010317701 A CN 202010317701A CN 111472504 A CN111472504 A CN 111472504A
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- Prior art keywords
- stair
- rod
- guard rail
- pressing plate
- connecting rod
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
- E04F11/181—Balustrades
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
- E04F11/181—Balustrades
- E04F11/1812—Details of anchoring to the wall or floor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
- E04F11/181—Balustrades
- E04F11/1842—Balusters; Grille-type elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention discloses a turnover stair guard rail, which comprises a base and a guard rail, wherein the base is detachably connected with a stair, the guard rail is fixed with the base, and the base comprises a lower pressing plate, a connecting rod, an upper pressing plate and a locking mechanism for locking the connecting rod and the upper pressing plate; the lower pressing plate is rotatably connected with the connecting rod, and the upper pressing plate is slidably connected with the connecting rod. The invention provides a turnover type stair guard rail, which is characterized in that the base structure is installed without punching holes on the surface or the side surface of a stair and installing expansion bolts to install the guard rail, so that the integrity of the stair is ensured, and the post-processing cost is not required.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a turnover type stair guard rail.
Background
The installation of the protective guard of the stairs of high-rise buildings belongs to the construction project of the later stage, and in order to ensure the safety of the early construction, a temporary protective guard is often erected on the stairs when no formal protective guard is installed. Therefore, most construction units mostly use scaffold steel pipes and fasteners to build simple stair handrails for saving cost, so that a large amount of scaffold steel pipes are occupied, the stability is poor, especially, the steel pipe heads are exposed and the full eyes of the steel pipe heads are connected with the fasteners easily, and pedestrians are easy to collide the steel pipes or the fasteners and are injured. If the steel pipe is directly used for welding, the dismantling difficulty and the waste of a large amount of construction materials are caused after the construction is finished. Therefore, need design a turnover formula stair guard rail, the base can be dismantled with stair and be connected, can install the position of needs temporarily with guard rail, and guard rail can height-adjusting as required, satisfies the protection safety altitude requirement of different scenes.
Chinese patent application publication No. CN206784977U, published as 22.12.2017, entitled "temporary guardrail easy to assemble for building construction stairs", discloses a temporary guardrail easy to assemble for building construction stairs, which comprises a plurality of vertical rods arranged along the vertical direction, wherein the lower end of each vertical rod is horizontally and fixedly provided with a bottom plate, the bottom plates are respectively fixed on the ground at the lowest part of the stairs, the ground at the corner of the stairs and the ground at the highest part of the stairs through expansion bolts, two handrail rods which are vertically spaced and inclined are arranged between every two adjacent vertical rods, and each handrail rod is connected with the vertical rod through an easily-detachable positioning connecting structure with the same structure; the invention is easy to disassemble and assemble, safe and reliable, and strong in stability, and in addition, the fluorescent layer is coated on the handrail guardrail, so that the safety and reliability of going upstairs and downstairs at night are improved. But the height of guardrail can not be adjusted, and the base adopts threaded connection, and the dismouting is inconvenient.
Disclosure of Invention
In order to overcome the problems that a temporary guardrail is inconvenient to disassemble and assemble and has a small application range in the prior art, the invention provides the turnover type stair guard rail.
In order to achieve the purpose, the invention adopts the following technical scheme:
a turnover stair guard rail comprises a base and a guard rail, wherein the base is detachably connected with a stair and is fixed with the base, and the base comprises a lower pressing plate, a connecting rod, an upper pressing plate and a locking mechanism for locking the connecting rod and the upper pressing plate; the lower pressing plate is rotatably connected with the connecting rod, and the upper pressing plate is slidably connected with the connecting rod.
In the technical scheme, the upper pressing plate is connected with the connecting rod in a sliding mode, the distance between the upper pressing plate and the lower pressing plate can be adjusted according to the thickness of the stair step, the stair step is pressed after the adjustment is finished, and the upper pressing plate is locked by the locking mechanism. According to the structure, the protective handrail is installed without punching holes on the surface or the side surface of the stair and installing the expansion bolts, so that the integrity of the stair is ensured, and the post-processing cost is not required; the base position is placed at will, satisfies the stair section and changes and the installation protection railing requirement.
Preferably, the locking mechanism is a locking screw, the locking screw is in threaded connection with the upper pressure plate, and the end part of the locking screw presses the connecting rod. The locking mechanism is simple in structure, and can conveniently lock the relative position of the lower pressing plate and the connecting rod.
Preferably, locking mechanism includes the lantern ring, and the lantern ring is connected with the top board, is equipped with the internal thread on the inside wall of lantern ring, and the connecting rod includes upper boom and lower beam, and upper boom and lower beam rotate to be connected, are equipped with the external screw thread with the internal thread adaptation on the upper boom. The rotation axis of the upper rod in the structure is parallel to the extending direction of the connecting rod, and the relative position between the upper pressure plate and the upper rod can be adjusted by rotating the upper rod, so that the distance between the upper pressure plate and the lower pressure plate is adjusted, and the lower pressure plate can be guaranteed to be capable of pressing the step.
Preferably, the locking mechanism further comprises a second telescopic spring and an inclined wedge block, the lantern ring comprises two semi-rings, the semi-rings are in sliding connection with the upper pressure plate, one end of the second telescopic spring is connected with the upper pressure plate, and the other end of the second telescopic spring is connected with the semi-rings; the wedge block is connected with the upper pressure plate in a sliding mode, and one end of the wedge block is arranged between the two half rings. The internal threads of the two semi-rings in the structure form a complete internal thread which is matched with the external thread on the upper rod. When the distance between the upper pressure plate and the lower pressure plate is larger than the step thickness, the inclined wedge block is pressed down, the inclined wedge block pushes the two half rings open, the upper pressure plate can freely slide relative to the upper rod at the moment, when the upper pressure plate is adjusted to a proper position, the inclined wedge block is loosened, the two half rings are folded, the sleeve ring and the upper rod are in threaded connection, and then the upper rod is rotated by using a tool as required to enable the upper pressure plate to tightly press the stairs. When the distance needing to be far away is larger, the structure can save a great amount of adjusting time.
Preferably, the locking mechanism further comprises a third telescopic spring, the third telescopic spring is sleeved on the outer side of the inclined wedge block, one end of the third telescopic spring is connected with the upper pressure plate, and the other end of the third telescopic spring is connected with the inclined wedge block. The structure can make the tapered wedge automatic re-setting, avoids appearing two semi-rings and the dead circumstances that can't reset of tapered wedge card.
Preferably, the lower pressing plate is provided with a cushion block, and the upper pressing plate is provided with a cushion block. The cushion blocks have protective effect on the surface and the bottom surface of the prefabricated staircase, and the prefabricated staircase cannot be polluted and damaged.
Preferably, the protection railing comprises a connecting sleeve and a telescopic rod, the connecting sleeve is sleeved on the outer side of the telescopic rod, a jacking structure is arranged on the connecting sleeve, and the jacking structure jacks the telescopic rod. Among the above-mentioned technical scheme, the base can be dismantled with stair and be connected, can install the position that needs temporarily with preventing the guardrail bar. The height of the protective barrier can be adjusted as required, and the requirement of protective safety height is met.
Preferably, the jacking structure is a jacking screw, the jacking screw is in threaded connection with the connecting sleeve, and the end part of the jacking screw compresses the telescopic rod. The jacking structure is simple in structure and convenient to jack.
Preferably, the side wall of the telescopic rod is provided with a contact plane, and the contact plane is in contact with the end part of the jacking screw. The contact plane can make the tip of top tight screw have bigger contact surface with the telescopic link, guarantees the stability of telescopic link.
Preferably, the jacking structure comprises a pressing piece and a first telescopic spring, the pressing piece is connected with the connecting sleeve in a sliding manner, one end of the first telescopic spring is connected with the connecting sleeve, and the other end of the first telescopic spring is connected with the pressing piece; the side wall of the telescopic rod is provided with a section of continuous tooth projection, and one end of the pressing piece is matched with the gap of the tooth projection and is in contact with the tooth projection. The tight structure in top tightly is convenient, when needing to adjust the position of telescopic link, presses down or pulls out and compresses tightly the piece, makes and compresses tightly a one end and the protruding separation from of tooth, can adjust the position of telescopic link, and after the adjustment was accomplished, unclamped and compressed tightly the piece and can make and compress tightly a top tight telescopic link.
The invention has the beneficial effects that: (1) the height of the protective barrier can be adjusted as required, so that the protective safety height requirements of different scenes are met; (2) the jacking structure is convenient to jack; (3) when the base structure is installed, expansion bolts do not need to be punched on the surface or the side surface of the stair to install the protective railings, the integrity of the stair is ensured, and the post-processing cost is not needed; (4) the base can be placed at will, so that the requirements of stair section change and protective railing installation are met; (5) the distance between the upper pressure plate and the lower pressure plate can be adjusted, and the adjustment is convenient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a caulking structure in embodiment 1;
FIG. 3 is a schematic structural view of a caulking structure in embodiment 2;
FIG. 4 is a schematic structural view of embodiment 3;
FIG. 5 is a schematic structural view of example 4;
FIG. 6 is a schematic structural view of example 5;
FIG. 7 is a schematic structural view of a lock mechanism in embodiment 5.
In the figure: the base 1, holding down plate 1.1, connecting rod 1.2, upper beam 1.2.1, lower beam 1.2.2, upper pressure plate 1.3, locking mechanism 1.4, lantern ring 1.4.1, semi-ring 1.4.1.1, second expanding spring 1.4.2, tapered wedge 1.4.3, third expanding spring 1.4.4, cushion 1.5, guard rail 2, connecting tube 2.1, telescopic link 2.2, the protruding 2.2.1 of tooth, top tight structure 3, compressing component 3.1, first expanding spring 3.2.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in figure 1, a turnover stair guard rail comprises a base 1 and a guard rail 2, wherein the base 1 is detachably connected with stairs, the guard rail 2 is fixed to the base 1, the guard rail 2 comprises a connecting sleeve 2.1 and a telescopic rod 2.2, the connecting sleeve 2.1 is sleeved on the outer side of the telescopic rod 2.2, and a jacking structure 3 is arranged on the connecting sleeve 2.1.
As shown in fig. 2, the tightening structure 3 is a tightening screw, the tightening screw is in threaded connection with the connecting sleeve 2.1, the end of the tightening screw compresses the telescopic rod 2.2, and a contact plane is arranged on the side wall of the telescopic rod 2.2 and is in contact with the end of the tightening screw.
Among the above-mentioned technical scheme, base 1 can dismantle with stair and be connected, can install the position that needs temporarily with protection railing 2. The height of the protective barrier 2 can be adjusted as required, and the requirement of protective safety height is met.
Example 2:
as shown in figure 1, a turnover stair guard rail comprises a base 1 and a guard rail 2, wherein the base 1 is detachably connected with stairs, the guard rail 2 is fixed to the base 1, the guard rail 2 comprises a connecting sleeve 2.1 and a telescopic rod 2.2, the connecting sleeve 2.1 is sleeved on the outer side of the telescopic rod 2.2, and a jacking structure 3 is arranged on the connecting sleeve 2.1.
As shown in fig. 3, the tightening structure 3 includes a pressing member 3.1 and a first expansion spring 3.2, the pressing member 3.1 is slidably connected to the connection sleeve 2.1, one end of the first expansion spring 3.2 is connected to the connection sleeve 2.1, and the other end of the first expansion spring 3.2 is connected to the pressing member 3.1; the lateral wall of the telescopic rod 2.2 is provided with a section of continuous tooth projection 2.2.1, and one end of the pressing piece 3.1 is matched with the gap of the tooth projection 2.2.1 and is contacted with the tooth projection 2.2.1.
Among the above-mentioned technical scheme, base 1 can dismantle with stair and be connected, can install the position that needs temporarily with protection railing 2. The height of the protective barrier 2 can be adjusted as required, and the requirement of protective safety height is met. The tight structure in top 3 tightly is convenient, when needing to adjust the position of telescopic link 2.2, presses or pulls out and compresses tightly piece 3.1, makes and compresses tightly 3.1 one end and the protruding 2.2.1 of tooth and break away from, can adjust the position of telescopic link 2.2, and the adjustment is accomplished the back, loosens and compresses tightly 3.1 and can make and compress tightly 3.1 top telescopic link 2.2.
Example 3:
as shown in fig. 4, on the basis of embodiment 1 or embodiment 2, the base 1 includes a lower pressing plate 1.1, a connecting rod 1.2, an upper pressing plate 1.3, and a locking mechanism 1.4 for locking the connecting rod 1.2 and the upper pressing plate 1.3; the lower pressure plate 1.1 is rotationally connected with the connecting rod 1.2, and the upper pressure plate 1.3 is slidably connected with the connecting rod 1.2; the locking mechanism 1.4 is a locking screw, the locking screw is in threaded connection with the upper pressure plate 1.3, and the end part of the locking screw presses the connecting rod 1.2.
The lower pressing plate 1.1 is rotatably connected with the connecting rod 1.2 and can be automatically aligned according to the inclination of the bottom surface of the stair. The upper pressing plate 1.3 is connected with the connecting rod 1.2 in a sliding mode, the distance between the upper pressing plate 1.3 and the lower pressing plate 1.1 can be adjusted according to the thickness of the stair step, the stair step is pressed after the adjustment is finished, and the upper pressing plate 1.3 is locked by the locking mechanism 1.4. According to the structure, the protective handrail 2 is installed without punching holes on the surface or the side surface of the stair, so that the integrity of the stair is ensured, and the post-processing cost is not required; the base 1 position is placed at will, satisfies the stair section and changes and the installation and prevents 2 requirements of railing.
Example 4:
as shown in fig. 5, on the basis of embodiment 1 or embodiment 2, the base 1 includes a lower pressing plate 1.1, a connecting rod 1.2, an upper pressing plate 1.3, and a locking mechanism 1.4 for locking the connecting rod 1.2 and the upper pressing plate 1.3; the locking mechanism 1.4 comprises a lantern ring 1.4.1, the lantern ring 1.4.1 is fixed with an upper pressure plate 1.3, internal threads are arranged on the inner side wall of the lantern ring 1.4.1, a connecting rod 1.2 comprises an upper rod 1.2.1 and a lower rod 1.2.2, the upper rod 1.2.1 is rotatably connected with the lower rod 1.2.2, a rotating shaft of the upper rod 1.2.1 is parallel to the extending direction of the connecting rod 1.2, external threads matched with the internal threads are arranged on the upper rod 1.2.1, and the upper pressure plate 1.3 and the upper rod 1.2.1 are connected through threads to realize vertical sliding; the lower pressure plate 1.1 is rotationally connected with the lower rod 1.2.2; the lower pressing plate 1.1 is provided with a cushion block 1.5, and the upper pressing plate 1.3 is provided with a cushion block 1.5.
In the structure, the relative position between the upper pressing plate 1.3 and the upper rod 1.2.1 can be adjusted by rotating the upper rod 1.2.1, and then the distance between the upper pressing plate 1.3 and the lower pressing plate 1.1 is adjusted, so that the lower pressing plate 1.1 can be ensured to compress the step.
Example 5:
as shown in fig. 6, on the basis of embodiment 1 or embodiment 2, the base 1 includes a lower pressing plate 1.1, a connecting rod 1.2, an upper pressing plate 1.3, and a locking mechanism 1.4 for locking the connecting rod 1.2 and the upper pressing plate 1.3; connecting rod 1.2 includes upper boom 1.2.1 and lower beam 1.2.2, and upper boom 1.2.1 rotates with lower beam 1.2.2 to be connected, and the axis of rotation of upper boom 1.2.1 is parallel with the extending direction of connecting rod 1.2, is equipped with the external screw thread on the upper boom 1.2.1.
As shown in fig. 7, the locking mechanism 1.4 includes a collar 1.4.1, two second expansion springs 1.4.2, a wedge block 1.4.3 and a third expansion spring 1.4.4, an inner thread adapted to the outer thread is provided on an inner side wall of the collar 1.4.1, the collar 1.4.1 includes two half rings 1.4.1.1, and the two half rings 1.4.1.1 are slidably connected to the upper pressure plate 1.3, respectively; the second extension springs 1.4.2 correspond to the half rings 1.4.1.1 one by one, one end of each second extension spring 1.4.2 is connected with the upper pressure plate 1.3, and the other end of each second extension spring 1.4.2 is connected with the corresponding half ring 1.4.1.1; the inclined wedge block 1.4.3 is connected with the upper pressure plate 1.3 in a sliding mode, one end of the inclined wedge block 1.4.3 is arranged between the two half rings 1.4.1.1, the third expansion spring 1.4.4 is sleeved on the outer side of the inclined wedge block 1.4.3, one end of the third expansion spring 1.4.4 is connected with the upper pressure plate 1.3, and the other end of the third expansion spring 1.4.4 is connected with the inclined wedge block 1.4.3; the upper pressure plate 1.3 is connected with the upper rod 1.2.1 through threads to realize up-and-down sliding; the lower pressure plate 1.1 is rotatably connected with the lower rod 1.2.2.
The internal threads of the two half rings 1.4.1.1 in the above structure form a complete internal thread which is matched with the external thread on the upper rod 1.2.1. When the distance between the upper pressure plate 1.3 and the lower pressure plate 1.1 is larger than the step thickness, the inclined wedge block 1.4.3 is pressed down, the inclined wedge block 1.4.3 pushes the two half rings 1.4.1.1 away, at the moment, the upper pressure plate 1.3 can freely slide relative to the upper rod 1.2.1, when the upper pressure plate 1.3 is adjusted to a proper position, the inclined wedge block 1.4.3 is loosened, the two half rings 1.4.1.1 are folded, the lantern ring 1.4.1 and the upper rod 1.2.1 are in threaded connection, and then the upper rod 1.2.1 is rotated by using a tool as required, so that the upper pressure plate 1.3 can be pressed tightly on the stairs. When the distance needing to be far away is larger, the structure can save a great amount of adjusting time.
The invention has the beneficial effects that: the height of the protective barrier can be adjusted as required, so that the protective safety height requirements of different scenes are met; the jacking structure is convenient to jack; when the base structure is installed, expansion bolts do not need to be punched on the surface or the side surface of the stair to install the protective railings, the integrity of the stair is ensured, and the post-processing cost is not needed; the base can be placed at will, so that the requirements of stair section change and protective railing installation are met; the distance between the upper pressure plate and the lower pressure plate can be adjusted, and the adjustment is convenient.
Claims (10)
1. A turnover stair guard rail comprises a base and a guard rail, wherein the base is detachably connected with a stair and is fixed with the base; the lower pressing plate is rotatably connected with the connecting rod, and the upper pressing plate is slidably connected with the connecting rod.
2. The epicyclic stair guardrail of claim 1, wherein the locking mechanism is a locking screw, the locking screw is in threaded connection with the upper pressure plate, and the end of the locking screw presses the connecting rod.
3. The revolving stair guardrail according to claim 1, wherein the locking mechanism comprises a collar connected to the upper press plate, inner side walls of the collar are provided with inner threads, the connecting rod comprises an upper rod and a lower rod, the upper rod and the lower rod are rotatably connected, and the upper rod is provided with outer threads matched with the inner threads.
4. A turnaround type stair guard rail according to claim 3, wherein the locking mechanism further comprises a second extension spring and a wedge, the collar comprises two half rings, the half rings are slidably connected to the upper platen, one end of the second extension spring is connected to the upper platen, and the other end of the second extension spring is connected to the half rings; the wedge block is connected with the upper pressure plate in a sliding mode, and one end of the wedge block is arranged between the two half rings.
5. The turnaround type stair guardrail of claim 4, wherein the locking mechanism further comprises a third expansion spring, the third expansion spring is sleeved outside the inclined wedge block, one end of the third expansion spring is connected with the upper press plate, and the other end of the third expansion spring is connected with the inclined wedge block.
6. A turnaround stair guard rail according to claim 1, 2, 3, 4 or 5 wherein the lower platen is provided with a spacer and the upper platen is provided with a spacer.
7. A turnover stair guard rail according to claim 1 or 2 or 3 or 4 or 5, wherein the guard rail comprises a connecting sleeve and a telescopic rod, the connecting sleeve is sleeved outside the telescopic rod, and the connecting sleeve is provided with a tightening structure which is tightened against the telescopic rod.
8. The turnaround type stair guardrail of claim 7, wherein the tightening structure is a tightening screw, the tightening screw is in threaded connection with the connecting sleeve, and an end of the tightening screw presses the telescopic rod.
9. The turnaround type stair guardrail of claim 8, wherein the side walls of the telescoping rods are provided with contact planes, and the contact planes are in contact with the ends of the jacking screws.
10. The revolving stair guard rail of claim 7, wherein the tightening mechanism comprises a compression member and a first extension spring, the compression member is slidably connected to the connection sleeve, one end of the first extension spring is connected to the connection sleeve, and the other end of the first extension spring is connected to the compression member; the side wall of the telescopic rod is provided with a section of continuous tooth projection, and one end of the pressing piece is matched with the gap of the tooth projection and is in contact with the tooth projection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010317701.3A CN111472504B (en) | 2020-04-21 | 2020-04-21 | Turnover type stair protection railing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010317701.3A CN111472504B (en) | 2020-04-21 | 2020-04-21 | Turnover type stair protection railing |
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| CN111472504A true CN111472504A (en) | 2020-07-31 |
| CN111472504B CN111472504B (en) | 2023-02-10 |
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| CN107327097A (en) * | 2017-08-22 | 2017-11-07 | 长兴华煜金属制品科技有限公司 | A kind of guardrail |
| CN207211795U (en) * | 2017-09-11 | 2018-04-10 | 董波 | A kind of height-adjustable construction guardrail |
| CN109812128A (en) * | 2017-11-21 | 2019-05-28 | 利越集团有限公司 | A kind of interim safety barrier of bridge construction |
| CN209538554U (en) * | 2018-03-28 | 2019-10-25 | 义乌工商职业技术学院 | A kind of guardrail that novel stair are convenient for loading and unloading |
| CN110616777A (en) * | 2018-06-20 | 2019-12-27 | 汉斯格罗欧洲公司 | Support capable of being assembled by rods |
| CN208518372U (en) * | 2018-06-25 | 2019-02-19 | 鲁茜 | The connection pedestal of construction safety protective fence |
| CN209099807U (en) * | 2018-08-24 | 2019-07-12 | 浙江升浙建设集团有限公司 | A kind of architectural stair temporary guard rail |
| CN109723228A (en) * | 2018-12-29 | 2019-05-07 | 烟台大学文经学院 | A kind of indoor construction pin-connected panel stair temporary guard rail |
| CN210217197U (en) * | 2019-03-21 | 2020-03-31 | 云南建投第三建设有限公司 | Multi-functional instrument formula rail guard mounting |
| KR102031748B1 (en) * | 2019-05-03 | 2019-10-14 | 최우석 | height adjustable handrail post |
| CN210032733U (en) * | 2019-06-04 | 2020-02-07 | 圣都家居装饰有限公司 | Temporary stair handrail for construction |
| CN212201398U (en) * | 2020-04-21 | 2020-12-22 | 新疆苏中建设工程有限公司 | Turnover type stair protection railing |
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