CN212153951U

CN212153951U - Assembled scissors ladder

Info

Publication number: CN212153951U
Application number: CN202020712303.7U
Authority: CN
Inventors: 苏文章; 卢少君; 陈宜
Original assignee: Xiamen Zhongjian Northeast Designing Institute Co ltd
Current assignee: Xiamen Zhongjian Northeast Designing Institute Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-15
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to an assembled scissors ladder belongs to building engineering technical field, and it includes stair and downstairs, one side that stair is close to downstairs is provided with the installation department, one side that downstairs is close to stair is provided with down the installation department down, go up the installation department and be provided with middle ladder roof beam down between the installation department, middle ladder roof beam includes ladder roof beam and downstairs roof beam, upward be provided with the slip hinged-support who connects the ladder roof beam in the installation department, be provided with the fixed hinged-support who connects the downstairs roof beam down in the installation department. The utility model discloses it is low to have construction installation accuracy requirement, and installation back stair tread does not have the effect of obvious piece.

Description

Assembled scissors ladder

Technical Field

The utility model belongs to the technical field of building engineering, especially, relate to an assembled scissors ladder.

Background

Prefabricated stairways have become one of the most common prefabricated concrete elements in the assembly of monolithic building works. Because of the advantages of convenient installation, low cost, instant use after installation, good finished product effect and the like, the method is widely adopted by engineering construction units. The prefabricated staircase is adopted in the construction process, so that the labor can be greatly saved and the construction quality can be improved. Prefabricated stairs are classified according to the use form, and the most common forms are rotary double-running stairs and bidirectional scissor stairs.

The current prefabricated scissor stair optimization design scheme comprises the following steps: and longitudinally segmenting, namely splitting a single shear stair run ladder section plate structure into two parts parallel to the trend of the ladder section, reserving a mounting joint of 2 cm in the middle, and filling the split ladder section plate structure with non-shrink slurry. (see the attached figure 1 in the specification).

However, when the components in the technical scheme are installed, the elevations of the two parallel prefabricated components are difficult to control to be completely consistent, so that the splicing part of the tread is uneven and is easy to have wrong platforms, and the integrity of the spliced ladder is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an assembled scissors ladder that it is low to have construction installation accuracy to require, and installation back stair tread does not have obvious piece.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an assembled scissors ladder, includes stair and lower stair, one side that stair is close to lower stair is provided with the installation department, one side that lower stair is close to stair is provided with down the installation department, go up and be provided with middle ladder roof beam between installation department and the lower installation department, middle ladder roof beam includes ladder roof beam and lower ladder roof beam, it connects the slip hinge support of ladder roof beam to go up to be provided with on the installation department, be provided with the fixed hinge support of connecting the lower ladder roof beam on the lower installation department.

By adopting the technical scheme, the upper mounting part and the lower mounting part are connected through the middle ladder beam, the calculated span length of the ladder section plate structure can be reduced, the lengths of the upper stair and the lower stair are only 1/2 of the original span length, and the problem that the prefabricated parts are easy to generate deflection deformation in the production and stacking process due to the fact that the prefabricated parts are slender is avoided; the plate thickness of going upstairs and downstairs can be more frivolous, and the on-the-spot hoist and mount of being convenient for, and the requirement of construction installation accuracy is not high, and the stair tread does not have obvious piece after the installation.

The present invention may be further configured in a preferred embodiment as: the sliding hinge support comprises a first gap vertically arranged in an upper mounting part, a first bolt is arranged in the first gap, one end, far away from the upper ladder beam, of the first bolt is provided with a fixing part for fixing the first bolt in the first gap, one end, far away from the fixing part, of the first bolt is provided with a first locking part, and the upper surface of the upper ladder beam is provided with a first mounting hole for the first bolt to penetrate.

Through adopting above-mentioned technical scheme, fix first bolt in first space through the mounting, can make the slip hinge support only bear pressure, do not transmit moment of flexure for can freely warp the translation between stair and the middle ladder roof beam, avoid leading to first bolt to warp and can't pass through first space because the earthquake.

Further, a first filling layer is filled in the first gap and close to the top of the first gap.

Through adopting above-mentioned technical scheme, the setting of first filling layer can seal first space, avoids the grit to get into first space in, prevents that the grit from influencing first bolt.

Further, the fixed hinge support includes that vertical setting is in the second space of installation department down, be provided with the second bolt in the second space, the second bolt is provided with the second retaining member towards the one end of descending ladder beam, the upper surface of descending ladder beam is provided with the confession the second mounting hole that the second bolt penetrated, the second space intussuseption is filled with grout.

Through adopting above-mentioned technical scheme, the second bolt that will have the second retaining member inserts in the second mounting hole for the second bolt fastening is in stair down, adds grout material in the second space, accomplishes down the ladder roof beam and fixes between the installation department down, simple structure, convenient operation.

Furthermore, a second filling layer is filled in the second gap and on the upper surface of the grouting material.

Through adopting above-mentioned technical scheme, the setting of second filling layer can avoid the grit to get into in the second space.

Furthermore, a first polyphenyl filling layer is arranged between the side wall of the lower installation part and the side wall of the upper ladder beam.

Through adopting above-mentioned technical scheme, the setting of first polyphenyl filling layer can prevent to go up terraced roof beam lateral wall and lower installation department combination department crack, forms the anti net that splits of one deck between last terraced roof beam lateral wall and lower installation department for it is more stable to go up to be connected between terraced roof beam and the lower installation department.

Furthermore, a waterproof layer is arranged between the lower installation part and the side wall of the upper ladder beam and is positioned on the upper surface of the first polyphenyl filling layer.

Through adopting above-mentioned technical scheme, the setting of waterproof layer can avoid water infiltration to get into the gap between ladder roof beam and the lower installation department, avoids going up the fracture between ladder roof beam and the lower installation department.

Furthermore, a cement mortar leveling layer is arranged between the upper installation part and the upper ladder beam as well as between the lower installation part and the lower ladder beam.

Through adopting above-mentioned technical scheme, the setting of cement mortar screed-coat can make the last surface mounting of going up stair and downstairs more steady, avoids going up stair and downstairs upper surface slope and influences the use in later stage.

Furthermore, a second polyphenyl filling layer is arranged on two sides of the cement mortar leveling layer.

Through adopting above-mentioned technical scheme, the setting of second polyphenyl filling layer can prevent to go up installation department and last ladder roof beam, installation department and lower ladder roof beam combination department and produce the crack, and the cement mortar screed-coat of make full use of infiltration forms the anti net of splitting of one deck between last installation department and last ladder roof beam, lower installation department and lower ladder roof beam.

To sum up, the utility model discloses a following at least one useful technological effect:

the upper installation part and the lower installation part are connected through the middle ladder beam, so that the calculated span length of the ladder section plate structure can be reduced, the length of the stair climbing and the stair descending is only 1/2 of the original span length, and the problem that the prefabricated parts are easy to generate deflection deformation in the production and stacking process due to the fact that the prefabricated parts are slender is avoided; the plate thickness of the upstairs and downstairs can be thinner and thinner, the on-site hoisting is convenient, the requirement on the construction and installation precision is not high, and no obvious seam exists on the tread of the stair after installation;

the first bolt is fixed in the first gap through the fixing piece, so that the first bolt only bears pressure and does not transmit bending moment, the first bolt can freely deform and translate between the upstairs and the middle ladder beam, and the first bolt is prevented from deforming and failing to pass through the first gap due to earthquake;

the second bolt that will have the second retaining member inserts in the second mounting hole for the second bolt fastening adds the grout material in the second space in going down the stair, accomplishes down the ladder roof beam and installs down the fixed between the department, simple structure, convenient operation.

Drawings

FIG. 1 is a top view of the prior art;

FIG. 2 is a schematic view of the overall structure of the present embodiment;

fig. 3 is a partial sectional structural schematic diagram of the present embodiment.

Reference numerals: 1. going upstairs; 2. going down stairs; 3. an upper mounting portion; 4. a lower mounting portion; 5. a middle ladder beam; 51. climbing a ladder beam; 52. descending the ladder beam; 6. a sliding hinge support; 61. a first void; 62. a first bolt; 63. a fixing member; 64. a first locking member; 65. a first mounting hole; 66. a first filling layer; 7. a fixed hinge support; 71. a second void; 72. a second bolt; 73. a second locking member; 74. a second mounting hole; 75. grouting material; 76. a second filling layer; 8. a first polyphenylene filler layer; 9. a waterproof layer; 91. a PE rod; 10. leveling cement mortar; 11. a second polyphenylene fill layer; 12. a gasket; 13. a ladder section plate structure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-3, for the utility model discloses an assembled scissors ladder, including going up stair 1 and downstairs 2, one side integrated into one piece that is close to downstairs 2 at going up stair 1 has last installation department 3, one side integrated into one piece that is close to going up stair 1 at downstairs 2 has down installation department 4, install middle terraced roof beam 5 between last installation department 3 and lower installation department 4, middle terraced roof beam 5 includes the last terraced roof beam 51 of being connected with last installation department 3, and the downstairs roof beam 52 of being connected with lower installation department 4, the lateral wall of going up terraced roof beam 51 and the lateral wall looks butt of lower installation department 4, go up installation department 3 and go up to be connected through slip hinge support 6 between the terraced roof beam 51, connect through fixed hinge support 7 between lower installation department 4 and the downstairs roof.

In another solution, the upper mounting part 3 is connected to the upper ladder beam 51 by a fixed hinge support 7, and the lower mounting part 4 is connected to the lower ladder beam 52 by a sliding hinge support 6.

The sliding hinge support 6 comprises a first gap 61 vertically penetrating and arranged in the upper mounting part 3, a first bolt 62 is arranged in the first gap 61 along the axial direction of the first gap, a fixing part 63 is arranged in the first gap 61 and at a position far away from the upper ladder beam 51, the fixing part 63 is a fixing nut in the embodiment, and the first bolt 62 is rotated to be mounted on the fixing nut, so that the mounting is convenient; the spacer 12 is installed between the fixing nut and the first bolt 63, the other end of the first bolt 62 is welded with a first locking member 64, the first locking member 64 is an anchor head, and a first installation hole 65 for the first bolt 62 to penetrate is formed in the upper surface of the upper ladder beam 51. Insert first bolt 62 in first mounting hole 65 for the anchor head is fixed in first mounting hole 65, accomplishes the connection of going up ladder beam 51 and last installation department 3, fixes first bolt 62 in first space 61 through fixation nut, can make sliding hinge support 6 only bear pressure, does not transmit the moment of flexure, makes and can freely warp the translation between going up stair 1 and the middle ladder beam 5, avoids leading to first bolt 62 to warp and can't pass through first space 61 because the earthquake.

Then, a first filling layer 66 is filled in the first gap 61 and near the top thereof, and the first filling layer 66 is mortar. Through the mortar shutoff, can seal first space 61, avoid the grit to get into first space 61 in, prevent that the grit from influencing first bolt 62.

In addition, the fixed hinge support 7 comprises a second gap 71 vertically penetrating through the lower mounting part 4, a second bolt 72 is mounted in the second gap 71, a second locking part 73 is welded to one end, facing the lower mounting part 4, of the second bolt 72, the second locking part 73 is an anchor head, a second mounting hole 74 for the second bolt 72 to penetrate through is formed in the upper surface of the lower ladder beam 52, and grouting material 75 for coating the second bolt 72 is filled in the second gap 71. Insert second bolt 72 in the second mounting hole 74, under the effect of anchor head for second bolt 72 is fixed in second mounting hole 74, then adds grout 75 to second space 71, accomplishes the fixed between lower ladder beam 52 and the lower mounting portion 4, simple structure, convenient operation.

In order to prevent sand and stones in later construction from entering the second gap 71, a second filling layer 76 is filled in the second gap 71 and on the upper surface of the grouting material 75, and the second filling layer 76 is mortar.

The first polyphenyl filling layer 8 is filled between the side wall of the lower mounting part 4 and the side wall of the upper ladder beam 51. Can prevent through first polyphenyl filling layer 8 that the department of going up the ladder roof beam 51 lateral wall and the lower mounting portion 4 combination crack, form the anti net that splits of one deck between last ladder roof beam 51 lateral wall and lower mounting portion 4 for it is more stable to go up to be connected between ladder roof beam 51 and the lower mounting portion 4.

Then, in order to avoid water from penetrating into the gap between the upper ladder beam 51 and the lower mounting portion 4, a waterproof layer 9 is mounted between the lower mounting portion 4 and the side wall of the upper ladder beam 51 and on the upper surface of the first polyphenyl filling layer 8, and the waterproof layer 9 is formed by fixing a plurality of PE rods 91 on the side wall of the upper ladder beam 51 through glue injection.

It is worth mentioning that a cement mortar screed 10 is added between the upper mounting part 3 and the upper ladder beam 51 and between the lower mounting part 4 and the lower ladder beam 52. Can make the upper surface of going up stair 1 and the installation of stair 2 more parallel and level down through cement mortar screed-coat 10, avoid going up stair 1 and stair 2 upper surface slope down and influence the use in later stage.

Then, add second polyphenyl filling layer 11 in the both sides of cement mortar screed-layer 10, under the effect of second polyphenyl filling layer 11, can prevent to go up installation department 3 and last ladder roof beam 51, lower installation department 4 and lower ladder roof beam 52 junction from producing the crack, make full use of the cement mortar screed-layer 10 of infiltration, form one deck anti-crack net between last installation department 3 and last ladder roof beam 51, lower installation department 4 and lower ladder roof beam 52.

The implementation principle of the embodiment is as follows: the upper mounting part 3 and the lower mounting part 4 are connected through the middle ladder beam 5, so that the calculated span length of the ladder section plate structure 13 can be reduced, the lengths of the upper stair 1 and the lower stair 2 are only 1/2 of the original span length, and the situation that the prefabricated parts are easy to generate deflection deformation in the production and stacking process due to the fact that the prefabricated parts are slender is avoided; the plate thickness of the upstairs 1 and the downstairs 2 can be thinner and thinner, the onsite hoisting is convenient, the requirement on the construction and installation precision is not high, and no obvious seam exists on the tread of the stair after installation.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An assembled scissors ladder, its characterized in that: including going up stair (1) and downstairs (2), one side that goes up stair (1) and is close to downstairs (2) is provided with installation department (3), one side that downstairs (2) are close to going up stair (1) is provided with down installation department (4), it is provided with middle ladder beam (5) to go up between installation department (3) and lower installation department (4), middle ladder beam (5) are including going up ladder beam (51) and downstairs roof beam (52), upward be provided with on installation department (3) and connect slide hinge support (6) of connecting ladder beam (51), be provided with fixed hinge support (7) of connecting downstairs roof beam (52) down on installation department (4).

2. The fabricated scissor ladder of claim 1, wherein: slide hinge support (6) are including vertical setting in first space (61) of last installation department (3), be provided with first bolt (62) in first space (61), the one end that first bolt (62) kept away from ladder roof beam (51) is provided with and fixes its mounting (63) in first space (61), the one end that mounting (63) were kept away from in first bolt (62) is provided with first retaining member (64), the upper surface of ladder roof beam (51) is provided with the confession first mounting hole (65) that first bolt (62) penetrated.

3. A fabricated scissor ladder as claimed in claim 2, wherein: a first filling layer (66) is filled in the first gap (61) and near the top thereof.

4. The fabricated scissor ladder of claim 1, wherein: the fixed hinge support (7) includes that vertical setting is in second space (71) of installation department (4) down, be provided with second bolt (72) in second space (71), second bolt (72) are provided with second retaining member (73) towards the one end of lower ladder roof beam (52), the upper surface of lower ladder roof beam (52) is provided with the confession second mounting hole (74) that second bolt (72) penetrated, second space (71) intussuseption is filled with grout material (75).

5. The fabricated scissor ladder of claim 4, wherein: and a second filling layer (76) is filled in the second gap (71) and positioned on the upper surface of the grouting material (75).

6. The fabricated scissor ladder of claim 1, wherein: and a first polyphenyl filling layer (8) is arranged between the side wall of the lower mounting part (4) and the side wall of the upper ladder beam (51).

7. The fabricated scissor ladder of claim 6, wherein: and a waterproof layer (9) is arranged between the lower mounting part (4) and the side wall of the upper ladder beam (51) and positioned on the upper surface of the first polyphenyl filling layer (8).

8. The fabricated scissor ladder of claim 1, wherein: and a cement mortar leveling layer (10) is arranged between the upper mounting part (3) and the upper ladder beam (51), and between the lower mounting part (4) and the lower ladder beam (52).

9. The fabricated scissor ladder of claim 8, wherein: and second polyphenyl filling layers (11) are arranged on two sides of the cement mortar leveling layer (10).