CN113090072B - Safety ladder way suitable for deep foundation pit slope-making type excavation construction and assembling method - Google Patents
Safety ladder way suitable for deep foundation pit slope-making type excavation construction and assembling method Download PDFInfo
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- CN113090072B CN113090072B CN202110387528.9A CN202110387528A CN113090072B CN 113090072 B CN113090072 B CN 113090072B CN 202110387528 A CN202110387528 A CN 202110387528A CN 113090072 B CN113090072 B CN 113090072B
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000009412 basement excavation Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 98
- 238000013016 damping Methods 0.000 claims description 33
- 238000012546 transfer Methods 0.000 claims description 33
- 230000009471 action Effects 0.000 claims description 6
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000011161 development Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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Abstract
The invention discloses a safety ladder way suitable for deep foundation pit slope-making excavation construction and an assembly method, wherein the safety ladder way comprises a folding ladder mechanism, wherein the folding ladder mechanism comprises six base seats, six connecting frames and twelve rocker arms; the upper surface of the substrate base is welded with the lower surface of the connecting frame; the folding ladder mechanism is matched with the supporting mechanism, and the folding ladder mechanism and the supporting mechanism are linked and matched with each other through a mechanical structure, so that the folding ladder can be folded into a rectangular block during transportation and storage, a group of safety ladder ways can be formed by folding and unfolding the folding ladder in a reverse mode during use, multi-angle supporting and reverse stroke self-locking are carried out through a plurality of groups of structures in the supporting mechanism, the bearing capacity is effectively met, meanwhile, the folding ladder can be rapidly installed, disassembled and folded according to construction engineering in the actual use process, and the technical problems of multiple parts and complex disassembly of the traditional safety ladder are effectively solved due to the characteristics of convenient transportation and convenient use, and the folding ladder can be effectively applied to deep foundation pit construction engineering.
Description
Technical Field
The invention relates to the technical field of safety stairways, in particular to a safety stairway suitable for deep foundation pit slope-making type excavation construction and an assembly method.
Background
The deep foundation pit is a foundation pit (groove) earthwork excavation, supporting and dewatering engineering with the excavation depth of more than 5 meters, the foundation pit engineering mainly comprises foundation pit supporting system design and construction and earthwork excavation and is mainly used for a foundation of a building;
in the traditional construction of the deep foundation pit, because the traditional engineering safety ladder is simple in fixed structure, and the way of installing the ladder way in the foundation pit also means that the deep foundation pit needs to be disassembled on site in the pit and transported to the ground surface in parts after the construction is finished, and the deeper the foundation pit is, the higher the ladder way is, the more the disassembly difficulty and the part number are, and the construction efficiency is seriously influenced; therefore, most construction units do not choose to arrange the traditional safety ladder way in the deep foundation pit, and only arrange the vertical climbing ladder on the side wall of the foundation pit to provide an up-and-down drift diameter for constructors, however, the mode increases the labor burden of the constructors, and meanwhile, the up-and-down efficiency is not ideal.
Therefore, the safety ladder way and the assembling method suitable for deep foundation pit slope-making type excavation construction are provided.
Disclosure of Invention
The invention aims to provide a safety ladder way suitable for deep foundation pit slope-making excavation construction, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a safety ladder way suitable for deep foundation pit slope-making type excavation construction comprises a folding ladder mechanism, wherein the folding ladder mechanism comprises six base seats, six connecting frames and twelve rocker arms;
the upper surface of the base seat is welded with the lower surfaces of the connecting frames, the outer surface of the rocker arm is hinged with the inner side walls of the two connecting frames through two pin shafts, and supporting mechanisms are mounted on the outer surfaces of the base seat and the connecting frames;
the supporting mechanism comprises three first sliding groove plates, three first supporting plates, three second supporting plates and three second sliding groove plates;
the upper surface of the first sliding groove plate is welded to the top of the inner side wall of the base seat, the upper part of the outer surface of the second sliding groove plate is hinged to the inner side wall of the first sliding groove plate through an overrunning clutch, the outer surface of the first supporting plate is hinged to the inner side wall of the first sliding groove plate through the overrunning clutch, the inner side wall of the second supporting plate is hinged to the outer surface of the first supporting plate through the overrunning clutch, and the outer surface of the second supporting plate is hinged to the inner side wall of the second sliding groove plate through the overrunning clutch.
As further preferable in the present technical solution: three through grooves are formed in the rear surface of the connecting frame, and the inner side walls of the through grooves are matched with the outer surface of the first sliding groove plate.
As a further preferred aspect of the present invention: a rubber base plate is bonded on the inner side wall of the connecting frame;
the rubber backing plate is used for increasing treading friction force and preventing the feet of workers from sliding and falling.
As further preferable in the present technical solution: the supporting mechanism further comprises a connecting shaft, three first folding plates and three second folding plates;
the outer surface of the connecting shaft is welded with the inner side wall of the second sliding groove plate, the outer surface of the connecting shaft is hinged with the inner side wall of the second folding plate through an overrunning clutch, and two side surfaces of the second folding plate are hinged with the inner side wall of the first folding plate through the overrunning clutch;
in the folding ladder mechanism, every four groups of rocker arms correspondingly open two groups of base seats and connecting frames, so that the ladder of the ladder way is formed, meanwhile, a forty-five degree angle is formed between the first folding plate and the second folding plate, and the first folding plate and the second folding plate are supported on the first sliding chute plate and the second sliding chute plate.
As further preferable in the present technical solution: two damping piston pipes are mounted on the outer surfaces of the first supporting plate and the second supporting plate and comprise storage sleeves, universal balls, piston shafts and springs;
the outer surfaces of the universal balls are hinged to the inner side walls of the storage sleeves through bearings, the universal ball of one storage sleeve is fixedly connected to the inner side wall of the second supporting plate, the outer surfaces of the two piston shafts are hinged to the inner side wall of the second supporting plate and the universal ball of the other storage sleeve through universal couplings respectively, and the outer surface of the spring is sleeved on the outer surface of the piston shaft;
when the folding ladder mechanism is trampled to the people, the pressure on upper portion transmits for another group damping piston pipe through a set of damping piston pipe, and two damping piston pipes form invariable back seat mechanism, and preceding group damping piston pipe transmits pressure to the spring through the piston shaft, and the elastic deformation of spring transmits spring and piston shaft for another group damping piston pipe, effectively eliminates the upper portion personnel and tramples the pressure condition of bringing.
As further preferable in the present technical solution: the lower surface of the folding ladder mechanism is provided with a transfer platform, the bottom of the transfer platform is welded with a fixed plate, and guard rails are arranged on the upper surfaces of the connecting frame and the transfer platform;
the transfer platform is used for docking two sets of folding ladder mechanisms, and the transfer platform is connected in the ground concrete facility through a fixed plate and a bolt set.
In addition, the invention also provides an assembly method of the safety ladder way suitable for deep foundation pit slope excavation construction, which comprises the following steps:
s1, firstly, arranging a transfer platform on the ground surface, and paving different numbers of folding ladder mechanisms along with the development of deep foundation pit excavation engineering, namely paving a group of folding ladder mechanisms, supporting mechanisms and the transfer platform after excavating to the depth node number mapped in advance;
s2, when the folding ladder mechanism and the supporting mechanism are laid, a worker stands on the transfer platform at the upper part, holds the upper end of the folding ladder mechanism and throws downwards, and the folding ladder mechanism and the supporting mechanism which are stressed by external force are folded and unfolded by self to lay;
s3, in the folding ladder mechanism, correspondingly opening two groups of base seats and connecting frames for every four groups of rocker arms to form the ladder of the ladder way, meanwhile, in the supporting mechanism, a second chute plate is hinged and vertically matched with a first chute plate at ninety degrees under the action of an overrunning clutch to form mechanical self-locking, a first supporting plate and a second supporting plate which are connected with the second chute plate and the first chute plate by the overrunning clutch are hinged, the first supporting plate and the second supporting plate are coaxially matched under the action of the overrunning clutch to support the first chute plate and the second chute plate at an angle of forty-five degrees, and meanwhile, a forty-fifteen degree angle is also formed between the first folding plate and the second folding plate to support the first chute plate and the second chute plate;
s4, when a person steps on the folding ladder mechanism, the pressure of the upper part is transmitted to the other group of damping piston pipes through one group of damping piston pipes, the two damping piston pipes form a constant backseat mechanism, the front group of damping piston pipes transmit the pressure to the spring through the piston shaft, and the elastic deformation of the spring is transmitted to the spring and the piston shaft of the other group of damping piston pipes, so that the pressure condition caused by the stepping of the person on the upper part is effectively eliminated;
s5, the folding ladder mechanism contacts the bottom of the deep foundation pit, a transfer platform is installed at the position corresponding to the bottom, when the deep foundation pit continues to excavate downwards, the next folding ladder mechanism is reversely installed through the transfer platform, and the steps are circulated and reciprocated continuously, so that the step installation requirement of the deep foundation pit is finally met.
As a further preferred aspect of the present invention: in S1, the transfer platform is connected to the ground concrete facility through a fixing plate and a bolt set.
Compared with the prior art, the invention has the beneficial effects that:
the folding ladder mechanism is matched with the supporting mechanism, and the folding ladder mechanism and the supporting mechanism are linked and matched with each other through a mechanical structure between the folding ladder mechanism and the supporting mechanism, so that the folding ladder can be folded into a rectangular block during transportation and storage, a group of safety ladder ways can be formed by folding and unfolding the folding ladder in a reverse mode during use, multi-angle supporting and reverse stroke self-locking are carried out through a plurality of groups of structures in the supporting mechanism, the bearing capacity is effectively met, meanwhile, the folding ladder can be rapidly installed, disassembled and folded according to construction engineering in the actual use process, and the technical problems of multiple parts and complex disassembly of the traditional safety ladder are effectively eliminated due to the characteristics of convenient transportation and convenient use, and the folding ladder can be effectively applied to deep foundation pit construction engineering;
two, when the folding ladder mechanism is trampled to the people, the pressure on upper portion transmits for another group of damping piston pipe through a set of damping piston pipe, forms invariable rear seat mechanism through two damping piston pipes, and each layer of ladder all has three invariable rear seat mechanisms of group to mutually support, can effectively eliminate the upper portion personnel and trample the pressure condition that brings, fully provided user demand.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective view of the ladder mechanism of the present invention;
FIG. 3 is a schematic view of another perspective structure of the folding ladder mechanism of the present invention;
FIG. 4 is a perspective view of the supporting mechanism of the present invention;
FIG. 5 is a schematic perspective view of another perspective view of the supporting mechanism of the present invention;
fig. 6 is a schematic perspective view of a transfer platform according to the present invention.
In the figure: 1. a folding ladder mechanism; 101. a base seat; 102. a connecting frame; 1021. a rubber pad; 1022. a through groove; 103. a rocker arm; 2. a support mechanism; 201. a first chute plate; 202. a first support plate; 203. a second support plate; 204. a second chute plate; 205. a connecting shaft; 206. a first folding plate; 207. a second folding plate; 3. a damper piston tube; 301. a storage sleeve; 3011. a universal ball; 302. a piston shaft; 303. a spring; 4. a transfer platform; 401. a fixing plate; 5. guard rails.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-6, the present invention provides a technical solution: a safety ladder way suitable for deep foundation pit slope-making excavation construction comprises a folding ladder mechanism 1, wherein the folding ladder mechanism 1 comprises six base seats 101, six connecting frames 102 and twelve rocker arms 103;
the upper surface of the base seat 101 is welded with the lower surfaces of the connecting frames 102, the outer surface of the rocker arm 103 is hinged with the inner side walls of the two connecting frames 102 through two pin shafts, and the outer surfaces of the base seat 101 and the connecting frames 102 are provided with the supporting mechanism 2;
the support mechanism 2 comprises three first chute plates 201, three first support plates 202, three second support plates 203 and three second chute plates 204;
the upper surface of the first sliding groove plate 201 is welded on the top of the inner side wall of the base seat 101, the upper part of the outer surface of the second sliding groove plate 204 is hinged with the inner side wall of the first sliding groove plate 201 through an overrunning clutch, the outer surface of the first supporting plate 202 is hinged with the inner side wall of the first sliding groove plate 201 through the overrunning clutch, the inner side wall of the second supporting plate 203 is hinged with the outer surface of the first supporting plate 202 through the overrunning clutch, and the outer surface of the second supporting plate 203 is hinged with the inner side wall of the second sliding groove plate 204 through the overrunning clutch.
In this embodiment, specifically: the rear surface of the connecting frame 102 is provided with three through grooves 1022, and the inner side walls of the through grooves 1022 are matched with the outer surface of the first chute plate 201; the through slots 1022 are used to meet the placing and storing requirements of the supporting mechanism 2 in the folded state.
In this embodiment, specifically: a rubber pad 1021 is bonded on the inner side wall of the connecting frame 102; the rubber pad 1021 is used for increasing treading friction force and preventing the feet of the worker from sliding and falling.
In this embodiment, specifically: the support mechanism 2 further includes a coupling shaft 205, three first folding plates 206, and three second folding plates 207;
the outer surface of the connecting shaft 205 is welded with the inner side wall of the second chute plate 204, the outer surface of the connecting shaft 205 is hinged with the inner side wall of the second folding plate 207 through an overrunning clutch, and two side surfaces of the second folding plate 207 are hinged with the inner side wall of the first folding plate 206 through the overrunning clutch;
in the folding ladder mechanism 1, two sets of base bases 101 and connecting frames 102 are opened correspondingly for every four sets of rocker arms 103, so that the ladder way is formed, and meanwhile, a forty-five degree angle is formed between the first folding plate 206 and the second folding plate 207, and the first folding plate 201 and the second folding plate 204 are supported.
In this embodiment, specifically: two damping piston tubes 3 are mounted on the outer surfaces of the first support plate 202 and the second support plate 203, and each damping piston tube 3 comprises a storage sleeve 301, a universal ball 3011, a piston shaft 302 and a spring 303;
the outer surfaces of the universal balls 3011 are hinged to the inner side wall of the storage sleeve 301 through bearings, the universal ball 3011 of one storage sleeve 301 is fixedly connected to the inner side wall of the second support plate 203, the outer surfaces of the two piston shafts 302 are hinged to the inner side wall of the second support plate 203 and the universal ball 3011 of the other storage sleeve 301 through universal couplings, and the outer surface of the spring 303 is sleeved on the outer surface of the piston shaft 302;
when a person treads the folding ladder mechanism 1, the pressure on the upper part is transmitted to the other group of damping piston pipes 3 through one group of damping piston pipes 3, the two damping piston pipes 3 form a constant rear seat mechanism, the pressure is transmitted to the spring 303 through the piston shaft 302 by the front group of damping piston pipes 3, the elastic deformation of the spring 303 is transmitted to the spring 303 and the piston shaft 302 of the other group of damping piston pipes 3, and the pressure condition caused by treading of the person on the upper part is effectively eliminated.
In this embodiment, specifically: the lower surface of the folding ladder mechanism 1 is provided with a transfer platform 4, the bottom of the transfer platform 4 is welded with a fixing plate 401, and guard rails 5 are arranged on the upper surfaces of the connecting frame 102 and the transfer platform 4;
the transfer platform 4 is used for butting two groups of folding ladder mechanisms 1, and the transfer platform 4 is connected in a ground concrete facility through a fixing plate 401 in cooperation with a bolt group.
In this embodiment, specifically: the folding ladder mechanism 1 can be selectively provided with a plurality of groups of base seats 101, connecting frames 102 and rocker arms 103 according to the actual use condition to increase the height of the ladder way, so as to meet the actual use requirement.
In addition, the invention also provides an assembly method of the safety ladder way suitable for deep foundation pit slope excavation construction, which specifically comprises the following steps:
s1, firstly, arranging a transfer platform 4 on the ground surface, and paving the folding ladder mechanisms 1 with different numbers along with the development of deep foundation pit excavation engineering, namely paving a group of folding ladder mechanisms 1, supporting mechanisms 2 and transfer platforms 4 after excavating to the depth node number mapped in advance;
s2, when the folding ladder mechanism 1 and the supporting mechanism 2 are laid, a worker stands on the transfer platform 4 at the upper part, holds the upper end of the folding ladder mechanism 1 and throws downwards, and the folding ladder mechanism 1 and the supporting mechanism 2 which are subjected to external force are folded, unfolded and laid automatically;
s3, in the folding ladder mechanism 1, two sets of base mounts 101 and connecting frames 102 are correspondingly opened for each four sets of rocker arms 103, so that the ladder of the ladder way is formed, and at the same time, in the supporting mechanism 2, the second chute plate 204 is hinged and vertically matched with the first chute plate 201 at ninety degrees under the action of the overrunning clutch, so as to form a mechanical self-lock, and the first supporting plate 202 and the second supporting plate 203 connected with the second chute plate 204 and the first chute plate 201 by the overrunning clutch are hinged and coaxially matched under the action of the overrunning clutch, and support the first chute plate 201 and the second chute plate 204 at an angle of forty-five degrees, and simultaneously, a forty-five degree angle is also formed between the first folding plate 206 and the second folding plate 207, and is supported on the first chute plate 201 and the second chute plate 204;
s4, when a person steps on the folding ladder mechanism 1, the pressure of the upper part is transmitted to the other group of damping piston pipes 3 through one group of damping piston pipes 3, the two damping piston pipes 3 form a constant rear seat mechanism, the front group of damping piston pipes 3 transmit the pressure to the spring 303 through the piston shaft 302, the elastic deformation of the spring 303 is transmitted to the spring 303 and the piston shaft 302 of the other group of damping piston pipes 3, and the pressure condition caused by the stepping of the person on the upper part is effectively eliminated;
s5, the folding ladder mechanism 1 at this moment contacts the bottom of the deep foundation pit, the transfer platform 4 is installed at the position corresponding to the bottom, when the deep foundation pit continues to dig downwards, the next group of folding ladder mechanisms 1 are reversely installed through the group of transfer platforms 4 and continuously circulate to and fro, and finally the ladder way installation requirement of the deep foundation pit is met.
In this embodiment, specifically: at S1, the transfer platform 4 is connected to the ground concrete facility by the fixing plate 401 in cooperation with the bolt set.
Working principle or structural principle: the folding ladder mechanism 1 is matched with the supporting mechanism 2, the folding ladder mechanism and the supporting mechanism are linked and matched with each other through a mechanical structure, the folding ladder can be folded into a rectangular block during transportation and storage, a group of safety ladder ways can be formed by folding and unfolding the folding ladder during use, multi-angle supporting and reverse stroke self-locking are carried out through a plurality of groups of structures in the supporting mechanism 2, the bearing capacity is effectively met, meanwhile, the folding ladder can be rapidly installed and disassembled according to construction engineering in the actual use process, and the characteristics of convenient transportation and convenient use enable the folding ladder to effectively eliminate the technical problem that the traditional safety ladder is multiple in parts and complicated in disassembly, and can be effectively applied to deep foundation pit construction engineering.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a safe ladder way suitable for deep basal pit formula excavation construction of putting, includes folding ladder mechanism (1), its characterized in that: the folding ladder mechanism (1) comprises six base seats (101), six connecting frames (102) and twelve rocker arms (103);
the upper surface of the base seat (101) is welded with the lower surface of the connecting frame (102), the outer surface of the rocker arm (103) is hinged with the inner side walls of the two connecting frames (102) through two pin shafts, and the outer surfaces of the base seat (101) and the connecting frames (102) are provided with supporting mechanisms (2);
the supporting mechanism (2) comprises three first chute plates (201), three first supporting plates (202), three second supporting plates (203) and three second chute plates (204);
the upper surface of the first sliding groove plate (201) is welded to the top of the inner side wall of the base seat (101), the upper portion of the outer surface of the second sliding groove plate (204) is hinged to the inner side wall of the first sliding groove plate (201) through an overrunning clutch, the outer surface of the first supporting plate (202) is hinged to the inner side wall of the first sliding groove plate (201) through an overrunning clutch, the inner side wall of the second supporting plate (203) is hinged to the outer surface of the first supporting plate (202) through an overrunning clutch, and the outer surface of the second supporting plate (203) is hinged to the inner side wall of the second sliding groove plate (204) through an overrunning clutch.
2. The safety stairway suitable for deep foundation pit sloping excavation construction of claim 1, characterized in that: three through grooves (1022) are formed in the rear surface of the connecting frame (102), and the inner side walls of the through grooves (1022) are matched with the outer surface of the first chute board (201).
3. The safety stairway suitable for deep foundation pit sloping excavation construction of claim 1, characterized in that: and a rubber pad (1021) is adhered to the inner side wall of the connecting frame (102).
4. The safety stairway suitable for deep foundation pit sloping excavation construction of claim 1, characterized in that: the supporting mechanism (2) further comprises a connecting shaft (205), three first folding plates (206) and three second folding plates (207);
the outer surface of the connecting shaft (205) is welded with the inner side wall of the second sliding groove plate (204), the outer surface of the connecting shaft (205) is hinged to the inner side wall of the second folding plate (207) through an overrunning clutch, and two side faces of the second folding plate (207) are hinged to the inner side wall of the first folding plate (206) through the overrunning clutch.
5. The safety stairway suitable for deep foundation pit sloping excavation construction of claim 1, characterized in that: two damping piston tubes (3) are mounted on the outer surfaces of the first supporting plate (202) and the second supporting plate (203), and each damping piston tube (3) comprises a storage sleeve (301), a universal ball (3011), a piston shaft (302) and a spring (303);
the outer surface of the universal ball (3011) is hinged to the inner side wall of the storage sleeve (301) through a bearing, the universal ball (3011) of one storage sleeve (301) is fixedly connected to the inner side wall of the second support plate (203), the outer surfaces of the two piston shafts (302) are hinged to the inner side wall of the second support plate (203) and the universal ball (3011) of the other storage sleeve (301) through universal couplings, and the outer surface of the spring (303) is sleeved on the outer surface of the piston shaft (302).
6. The safety stairway suitable for deep foundation pit sloping excavation construction of claim 1, characterized in that: the lower surface of folding ladder mechanism (1) is equipped with transfer platform (4), the bottom welding of transfer platform (4) has fixed plate (401), link (102) with guardrail bar (5) are all installed to the upper surface of transfer platform (4).
7. The assembly method of the safety ladder way suitable for the deep foundation pit slope excavation construction is characterized by comprising the following steps of:
s1, firstly, arranging a transfer platform (4) on the ground surface, and paving different numbers of folding ladder mechanisms (1) along with the development of deep foundation pit excavation engineering, namely paving a group of folding ladder mechanisms (1), supporting mechanisms (2) and the transfer platform (4) after excavating to the depth node number mapped in advance;
s2, when the folding ladder mechanism (1) and the supporting mechanism (2) are laid, a worker stands on the transfer platform (4) at the upper part, holds the upper end of the folding ladder mechanism (1) and throws downwards, and the folding ladder mechanism (1) and the supporting mechanism (2) which are stressed by external force are folded and unfolded to lay by themselves;
s3, in the folding ladder mechanism (1), every four groups of rocker arms (103) correspondingly open two groups of base seats (101) and connecting frames (102) so as to form the ladder of the ladder way, meanwhile, in the supporting mechanism (2), the second chute plate (204) is matched with the first chute plate (201) to be hinged and vertically matched at ninety degrees under the action of the overrunning clutch to form mechanical self-locking, the first supporting plate (202) and the second supporting plate (203) which are connected by the overrunning clutch are hinged with the second sliding groove plate (204) and the first sliding groove plate (201), under the action of the overrunning clutch, the first sliding groove plate (201) and the second sliding groove plate (204) are matched with each other along the same axis and supported at an angle of forty-five degrees, meanwhile, a forty-five degree angle is also formed between the first folding plate (206) and the second folding plate (207) and is supported on the first chute plate (201) and the second chute plate (204);
s4, when a person steps on the folding ladder mechanism 1, the pressure of the upper part is transmitted to the other group of damping piston pipes (3) through one group of damping piston pipes (3), the two damping piston pipes (3) form a constant backseat mechanism, the front group of damping piston pipes (3) transmit the pressure to a spring (303) through a piston shaft (302), the elastic deformation of the spring (303) is transmitted to the spring (303) and the piston shaft (302) of the other group of damping piston pipes (3), and the pressure condition caused by the stepping of the person on the upper part is effectively eliminated;
s5, the folding ladder mechanism (1) at the moment contacts with the bottom of the deep foundation pit, a transfer platform (4) is installed at the position corresponding to the bottom, when the deep foundation pit continues to dig downwards, the next folding ladder mechanism (1) is reversely installed through the transfer platform (4), and the requirement for installing the ladder way of the deep foundation pit is met finally.
8. The method for assembling the safety stairway suitable for the deep foundation pit sloping excavation construction according to claim 7, characterized in that: in S1, the transfer platform (4) is connected to the ground concrete facility by a fixing plate (401) and a bolt set.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387528.9A CN113090072B (en) | 2021-04-10 | 2021-04-10 | Safety ladder way suitable for deep foundation pit slope-making type excavation construction and assembling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110387528.9A CN113090072B (en) | 2021-04-10 | 2021-04-10 | Safety ladder way suitable for deep foundation pit slope-making type excavation construction and assembling method |
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| CN113090072A CN113090072A (en) | 2021-07-09 |
| CN113090072B true CN113090072B (en) | 2022-05-20 |
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