CN115030036A - Construction process for mounting suspended steel ladder based on cross rail in non-open space - Google Patents
Construction process for mounting suspended steel ladder based on cross rail in non-open space Download PDFInfo
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- CN115030036A CN115030036A CN202210483945.8A CN202210483945A CN115030036A CN 115030036 A CN115030036 A CN 115030036A CN 202210483945 A CN202210483945 A CN 202210483945A CN 115030036 A CN115030036 A CN 115030036A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
- E01D21/105—Balanced cantilevered erection
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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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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Abstract
The application relates to a construction process for mounting and hanging a steel ladder based on a cross rail in a non-open space, which comprises the following steps: step S1, building a stand column bearing platform and a trestle surrounding the stand column bearing platform, building a temporary jacking stand column frame below the bridge frame on the trestle, and building a platform steel stand column on the existing platform; step S2, an upper platform is built on the temporary jacking upright post frame, the upper platform is provided with mounting holes, and the inner side walls of the mounting holes are provided with inserting holes; step S3, mounting a first suspension device on the upper-layer platform; a guide plate is arranged on the upper-layer platform, a transversely extending guide chute is formed in the guide plate, and one end of the guide chute is arranged in an open manner; step S4, hoisting the prefabricated staircase; and step S5, setting up a lower layer platform. This application has the effect that improves the convenience at narrow and small space installation prefabricated staircase.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a construction process for installing and hanging a steel ladder based on a cross rail in a non-open space.
Background
Because the traditional concrete building structure has the conditions of long construction period, low efficiency and serious environmental pollution, the concrete building structure has various environmental hazards such as dust, noise, bad gas and the like brought to peripheral areas during the construction of building engineering. In view of the rapid promotion of the urbanization process in China, the problems of low efficiency and environmental hazard of the traditional building industry need to be solved urgently, and the steel structure is greatly developed due to the characteristics of short construction period and light self weight.
Stairs are used as members for vertical traffic between two floors at different heights in building structures. The stairs are composed of continuous stair sections (also called stair runs), platforms (rest platforms), enclosing members and the like. In order to further shorten the construction period of the building structure, prefabricated stairs are produced at the same time.
In order to effectively alleviate the traffic pressure in city and make things convenient for people's daily trip, can add the transfer platform, partial transfer platform relies on the relief to build and locates between traffic transfer station and the bridge, for example: chongqing rail transit ten numbers line engineering is once a family's rock station and is transferred platform, and the platform of transferring is located jialing river south bank, and between existing two numbers line once a family's rock station and ten numbers line bridge pier, the platform of transferring includes upper platform and lower floor's platform, and upper platform lies in the below of bridge frame and fixed support on ten numbers line bridge pier corbels, and south side stridees across two numbers line once a family's rock station, and lower floor's platform hangs and is fixed in upper platform. Because the space between upper platform and the bridge frame is narrow and small, adopt traditional large-scale crane hoist and mount method to assemble prefabricated staircase between upper platform and lower floor's platform, have great technical difficulty, consequently need further improvement.
Disclosure of Invention
In order to reduce the construction degree of difficulty of installing prefabricated staircase in narrow and small space, improve the convenience of installing prefabricated staircase, this application provides and hangs steel ladder's construction technology based on in the non-open space strides the installation of rail.
The application provides a construction technology based on stride rail installation and hang steel ladder in open space adopts following technical scheme:
the construction process for installing the suspended steel ladder based on the cross rail in the non-open space comprises the following steps:
s1, building an upright post bearing platform and a trestle surrounding the upright post bearing platform, wherein the upright post bearing platform is fixed on the ground, a temporary jacking upright post frame positioned below the bridge frame is built on the trestle, and a platform steel upright post is built on the existing platform;
step S2, an upper platform is built on the temporary jacking upright post frame, the upper platform is provided with a mounting hole, the inner side wall of the mounting hole is provided with an inserting hole, the upper platform is positioned below the bridge frame, one side of the upper platform is fixedly connected to a bracket support of a bridge pier, the other side of the upper platform is fixedly connected to a platform steel upright post, and the temporary jacking upright post frame falls off the upper platform;
step S3, installing a first suspension device on the upper-layer platform, wherein the first suspension device comprises a transverse moving guide rail arranged on the upper-layer platform, a moving frame connected with the transverse moving guide rail in a sliding manner, and a first lifter arranged on the moving frame, and the first lifter is provided with a lifting steel rope; a guide plate is arranged on the upper layer platform, a guide chute extending transversely is formed in the guide plate, and one end of the guide chute is open;
s4, hoisting a prefabricated staircase, wherein the prefabricated staircase comprises an upper staircase platform, a lower staircase platform, an intermediate staircase platform positioned between the upper staircase platform and the lower staircase platform, and a plurality of staircase steps arranged between the upper staircase platform and the intermediate staircase platform and between the intermediate staircase platform and the lower staircase platform, the side wall of the upper staircase platform is connected with a guide inserted bar in a sliding way, the upper staircase platform is provided with an installation cavity, both side walls of the upper staircase platform are provided with sliding holes communicated with the installation cavity for the sliding of the guide inserted bar, a pair of sliding plates are connected in the installation cavity in a sliding way, the guide inserted bar is arranged on the end surface opposite to the two sliding plates, the upper staircase platform is provided with a control component for controlling the guide inserted bar to slide out or retract into the upper staircase platform, in the step S4, a hoisting steel rope of a first lifter is fixed on the intermediate staircase platform, a movable frame moves to drive the upper staircase platform to slide towards the direction close to the installation hole of the upper staircase platform, in the moving process of the prefabricated staircase, the guide insertion rod extends out of the outer wall of the upper staircase platform and is slidably arranged in the guide sliding groove, when the upper staircase platform slides to the position below the installation hole, the two sliding plates are driven by the control assembly to slide towards the mutually approaching direction, so that the guide insertion rod slides and retracts in the upper staircase platform to realize the separation of the guide insertion rod and the guide sliding groove, the first lifter continuously lifts the prefabricated staircase to the position where the guide insertion rod corresponds to the insertion hole, the two sliding plates are driven by the control assembly to slide towards the far direction to drive the guide insertion rod to slide and extend out of the upper staircase platform, and the insertion of the guide insertion rod into the insertion hole is realized;
and S5, building a lower platform, building an upper platform on the lowered temporary jacking upright post frame, fixedly connecting the lower stair platform to the lower platform, and fixing the upper platform and the lower platform through reinforced steel upright posts.
By adopting the technical scheme, after the upper-layer platform is built, when the prefabricated staircase is installed, the guide insertion rod extends out of the outer wall of the upper-layer platform in an initial state, the prefabricated staircase on the transport vehicle positioned below the upper-layer platform is lifted by the first lifter, the movable vehicle frame moves to drive the upper-layer platform to slide towards the direction close to the installation hole of the upper-layer platform, the guide insertion rod slides to penetrate through the guide sliding groove in the moving process of the prefabricated staircase, the prefabricated floor slab is effectively positioned in a sliding manner, the possibility of shaking, warping or instability of the prefabricated floor slab in the lifting process is reduced, the possibility of collision between the prefabricated floor slab and the upper-layer platform is reduced, when the upper-layer platform slides to the position below the installation hole, the two sliding plates are driven to slide towards the direction close to each other by the control assembly, so that the guide insertion rod slides and retracts to the upper-layer platform to realize the separation of the guide insertion rod and the guide sliding groove, first lifting mechanism continues to promote to the corresponding department in direction inserted bar and spliced eye position prefabricated staircase, it slides towards keeping away from the direction and drives the direction inserted bar and slide and stretch out in last stair platform to drive two sliding plates through control assembly, realize the direction inserted bar and insert and locate the spliced eye, thereby realize going up the fixed mounting of stair platform and upper landing, later build lower floor's platform, lower floor's platform is fixed with lower floor's platform, thereby realize installing prefabricated staircase between upper platform and lower floor's platform, improve the convenience of installing prefabricated staircase in narrow and small space and effectively improve prefabricated staircase's installation effectiveness.
Preferably, the control assembly includes that it wears to locate the installation cavity roof and is located loose axle and one end between two sliding plates and hinges in the first hinge bar of sliding plate and other end hinge in the loose axle along vertical sliding, be provided with in the installation cavity and force the loose axle towards the elastic component that is close to the installation cavity direction and slides, in step S4, exert the effort to the loose axle and make the loose axle stretch out the installation cavity, drive two sliding plates through first hinge bar and slide towards the direction that is close to each other to drive direction inserted bar and slide the enstrophe in the installation cavity.
Through adopting above-mentioned technical scheme, through outwards applying the effort to the loose axle, when the loose axle upwards slided, elastic component took place elastic deformation this moment and has great elastic potential energy, drive two sliding plates through first hinge bar and slide towards the direction of being close to each other, thereby drive the direction inserted bar and slide the enshrinking in the installation cavity, when removing the effort of applying the loose axle, elastic component forces the loose axle to slide downwards and resets, drive two sliding plates through first hinge bar and slide towards the direction of keeping away from each other, thereby it stretches out in the installation cavity to drive the direction inserted bar and slide.
Preferably, in the step S3, a second suspension device is installed on the bridge frame, the second suspension device includes a lifting frame installed on the bridge frame and a second lifter disposed on the lifting frame, the second lifter has a lifting steel rope, in the step S4, the lifting steel rope of the second lifter is fixed to the front end surface of the upper landing, when the upper landing slides below the installation hole, the lifting steel rope of the second lifter is fixed to the upper end of the movable shaft, in the process of lifting the upper landing by the second lifter, an acting force is applied to the movable shaft through the lifting steel rope, the movable shaft extends out of the installation cavity, the two sliding plates are driven by the first hinge rod to slide in the direction of approaching each other, thereby driving the guide insertion rod to slide and retract into the installation cavity, so that the guide insertion rod is separated from the guide sliding groove, the first lifter and the second lifter continue to lift the prefabricated staircase to the position where the guide insertion rod corresponds to the insertion hole, the acting force applied to the movable shaft by the second lifter is removed, the elastic piece forces the movable shaft to slide and reset, and the two sliding plates are driven by the first hinge rod to slide towards the mutually away direction, so that the guide insertion rod is inserted into the insertion hole.
By adopting the technical scheme, the second suspension device is installed on the existing bridge frame to be matched with the first suspension device to carry out combined suspension on the prefabricated staircase, when the guide insertion rod travels in the guide sliding groove, partial tension is provided for the prefabricated staircase through the hoisting steel rope of the second lifter, the prefabricated staircase is transversely moved by matching with the movable frame, when the upper staircase platform slides to the position under the installation hole, the hoisting steel rope of the second lifter is fixed at the upper end of the movable shaft, when the second lifter lifts the upper staircase platform, acting force is applied to the movable shaft through the hoisting steel rope, the movable shaft extends out of the installation cavity, the two sliding plates are driven by the first hinge rod to slide towards the mutual approaching direction, so that the guide insertion rod is driven to slide and retract in the installation cavity, the guide insertion rod is separated from the guide sliding groove, and the first lifter and the second lifter continue to lift the prefabricated staircase to the position corresponding to the guide insertion rod and the insertion hole, the acting force applied to the movable shaft by the second lifter is relieved, the elastic piece forces the movable shaft to slide and reset, and the two sliding plates are driven by the first hinge rod to slide towards the mutually away direction, so that the guide insertion rod is inserted into the insertion hole.
Preferably, the guide insertion rod is rotatably connected to the sliding plate.
By adopting the technical scheme, the guide insertion rod is rotatably connected with the sliding plate, when the upper stair platform of the prefabricated stair moves horizontally in the guide plate, the guide insertion rod rotates in the guide sliding groove to walk, and the friction resistance generated when the upper stair platform moves horizontally in the guide plate is reduced.
Preferably, the plug-in holes are strip-shaped holes extending along the transverse direction, threaded holes are formed in the inner walls of the mounting holes, the end face of the upper stair platform is rotatably connected with a mounting screw connected to the threaded holes in a threaded mode, and the upper stair platform is provided with a rotating assembly driving the mounting screw to rotate.
Through adopting above-mentioned technical scheme, the spliced eye is along transversely extending's bar hole for the direction inserted bar still has along lateral shifting's space after inserting and locating the spliced eye, install in the installation hole of upper platform when last landing, installation screw rod butt in installation hole inner wall, operating personnel drives the installation screw rod through rotating assembly and rotates, under the cooperation of first lifting mechanism, realize that installation screw rod spiro union is in upper platform, improve the connection stability of prefabricated staircase and upper platform.
Preferably, the rotating assembly comprises a rack fixedly connected to the sliding plates and a gear coaxially and fixedly sleeved on the mounting screw, the axis direction of the mounting screw is transversely arranged, the rack is meshed with the gear, the length direction of the rack is parallel to the sliding direction of the sliding plates, in step S4, when the two sliding plates slide towards the mutual away direction, the guide inserting rod is inserted into the inserting hole and drives the rack to move, the rack moves to drive the gear to rotate, so that the mounting screw is driven to rotate, and the mounting screw is screwed in the threaded hole.
Through adopting above-mentioned technical scheme, when installing prefabricated staircase, two sliding plates move towards the orientation of keeping away from each other in-process that slides, drive the rack and remove to drive gear revolve, drive the installation screw rod then and rotate, both realized that the direction inserted bar inserts and locates the spliced eye, realized installation screw rod spiro union in screw hole again, improve prefabricated staircase's installation effectiveness when increasing prefabricated staircase and upper platform's stability of being connected.
Preferably, in the step S4, after the mounting screw is screwed into the threaded hole, a support steel plate is fixedly mounted on the inner side wall of the mounting hole where the threaded hole is formed, and the support steel plate abuts against the lower end surface of the upper landing.
Through adopting above-mentioned technical scheme, add the supporting steel plate of butt in last landing lower extreme face, further improve the connection stability of prefabricated staircase and upper landing.
Preferably, the upper end surface of the upper landing is provided with a grouting hole communicated with the installation cavity, and in step S4, after the guide insertion rod is inserted into the insertion hole, concrete mortar is poured into the installation cavity through the grouting hole.
Through adopting above-mentioned technical scheme, through the slip casting pore pair installation intracavity pouring concrete mortar, the installation cavity is filled up to the concrete mortar, and the concrete mortar condenses fixed back, on the one hand, effectively fixes the position of sliding plate, reduces the direction inserted bar and contracts in the installation cavity, and on the other hand improves stair platform's bearing capacity.
Preferably, the moving vehicle frame is provided with a first winch and a second winch, the first winch and the second winch are both provided with a connecting rope, in step S4, the connecting rope of the first winch is fixed on the lower stair platform, and the connecting rope of the second winch is fixed on the stair step between the upper stair platform and the middle stair platform.
Through adopting above-mentioned technical scheme, be provided with first hoist engine and second hoist engine on the travelling carriage, when hoist prefabricated staircase, be fixed in stair platform down with the connection rope of first hoist engine, the connection rope of second hoist engine is fixed in the stair step between stair platform and the well stair platform, through first hoist engine, the second hoist engine is to receiving and releasing of connecting the rope, the levelness of stair platform and stair platform down is gone up in the control, reduces prefabricated staircase and takes place the possibility of upwarping.
Preferably, the moving frame is rotatably connected with a turntable, and the first lifter, the first winch and the second winch are arranged on the turntable.
Through adopting above-mentioned technical scheme, rotate through the control carousel, realize turning to prefabricated stair for the direction inserted bar of going up the landing slides and wears to locate the direction spout.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the initial state, the guide insertion rod extends out of the outer wall of the upper stair platform, the prefabricated stair on the transport vehicle below the upper platform is hoisted by the first hoister, the moving vehicle frame moves to drive the upper stair platform to slide towards the direction close to the mounting hole of the upper platform, the guide insertion rod slides and penetrates through the guide sliding chute during the movement of the prefabricated stair, the prefabricated floor slab is effectively positioned in a sliding manner, the possibility of shaking, upwarping or instability of the prefabricated floor slab during the hoisting process is reduced, the possibility of collision between the prefabricated floor slab and the upper platform is reduced, when the upper stair platform slides to the lower part of the mounting hole, the two sliding plates are driven by the control assembly to slide towards the direction close to each other, the guide insertion rod slides and retracts to the upper stair platform to realize the separation of the guide insertion rod and the guide sliding chute, and the first hoister continuously hoists the prefabricated stair to the position corresponding to the position of the guide insertion rod and the insertion hole, the control assembly drives the two sliding plates to slide towards the far direction to drive the guide insertion rods to slide and extend out of the upper stair platform, so that the guide insertion rods are inserted into the insertion holes, the upper stair platform and the upper layer platform are fixedly installed, the lower layer platform is built, and the lower layer platform and the lower stair platform are fixed, so that the prefabricated stair is installed between the upper layer platform and the lower layer platform, the convenience of installing the prefabricated stair in a narrow space is improved, and the installation efficiency of the prefabricated stair is effectively improved;
2. when the prefabricated staircase is installed, the two sliding plates drive the rack to move in the process of sliding towards the directions away from each other, so that the gear is driven to rotate, and then the installation screw rod is driven to rotate, so that the insertion of the guide insertion rod into the insertion hole is realized, the installation screw rod is screwed in the threaded hole, the connection stability of the prefabricated staircase and the upper-layer platform is improved, and the installation efficiency of the prefabricated staircase is improved;
3. when hoist prefabricated staircase, be fixed in the stair platform down with the connection rope of first hoist engine, the connection rope of second hoist engine is fixed in the stair step between stair platform and the well stair platform, through first hoist engine, second hoist engine to connecting receiving and releasing of rope, the levelness of stair platform and the stair platform down in the control reduces prefabricated staircase and takes place the possibility of upwarping.
Drawings
Fig. 1 is a general view of a construction process structure of a steel ladder installed in a span rail in a non-open space in embodiment 1.
Fig. 2 is a schematic structural view of the upper stage in example 1.
Fig. 3 is a schematic view of hoisting the prefabricated staircase in the embodiment 1.
Fig. 4 is a schematic structural view of the first suspender in embodiment 1.
Fig. 5 is a schematic structural view of the prefabricated staircase in embodiment 1.
Fig. 6 is a schematic structural view of a control unit in embodiment 1.
Fig. 7 is a schematic structural view of an upper stage in embodiment 2.
Fig. 8 is a schematic structural view of a control unit in embodiment 2.
Description of reference numerals: 1. an upper stage; 11. mounting holes; 12. inserting holes; 13. supporting the steel plate; 14. a guide plate; 141. a guide chute; 15. a threaded hole; 2. prefabricating a stair; 21. going up a landing; 211. a mounting cavity; 212. a sliding plate; 213. a guide insertion rod; 214. grouting holes; 215. installing a screw rod; 22. going downstairs; 23. a mid-rise platform; 24. stair steps; 3. a lower stage; 31. reinforcing the steel upright post; 4. a first suspension device; 41. a lateral movement guide rail; 42. moving the frame; 43. a first lifter; 44. a first winding machine; 45. a second hoist; 46. a turntable; 5. a control component; 51. a movable shaft; 52. a hinged lever; 53. an anti-falling plate; 54. a compression spring; 55. adjusting the screw rod; 56. a drive motor; 6. a rotating assembly; 61. a gear; 62. a rack; 10. a station; 101. a platform steel upright; 102. a column bearing platform; 103. a permanent steel upright; 20. a bridge frame; 201. a bridge pier; 202. supporting the bracket; 203. a second lifter; .
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses a construction process for mounting and hanging a steel ladder on a cross rail in a non-open space.
Example 1:
referring to fig. 1, the construction process for installing the suspended steel ladder based on the cross rail in the non-open space comprises the following steps:
step S1, construction preparation, referring to fig. 1, constructing a pile foundation, a column bearing platform 102 and a trestle (not shown) surrounding the column bearing platform 102, constructing the trestle by truck crane, wherein the column bearing platform 102 is fixed to the ground, constructing a permanent steel column 103 on the column bearing platform 102, constructing a temporary jacking column frame (not shown) below the bridge frame 20 on the trestle, and the temporary jacking column frame has a lifting function and is used for jacking and constructing the upper platform 1 or the lower platform 3. A bracket support is arranged on the pier 201, and a platform steel upright 101 is built on the existing platform 10.
Step S2, building an upper platform 1, and building the upper platform 1 on the temporary jacking upright post frame with reference to fig. 1 and 2, wherein the length direction of the upper platform 1 is parallel to the transverse direction, and the width direction of the upper platform 1 is parallel to the longitudinal direction. The up end of upper platform 1 runs through and has seted up installation hole 11, installation hole 11 is located two horizontal relative inside walls and has all seted up spliced eye 12, upper platform 1 is located bridge frame 20's below and reserves 3-4 meters between 1 upper surface of upper platform and the lower terminal surface of bridge frame 20, one side fixed connection of upper platform 1 is on the bracket supports, the opposite side fixed connection of upper platform 1 is on platform steel stand 101 upper portion, and permanent steel stand 103 upper portion fixed connection is in upper platform 1's lower terminal surface, after having fixed upper platform 1, the lower terminal surface that falls and breaks away from in upper platform 1 of interim jacking stand, provide operating space for follow-up construction.
Step S3, the first suspension device 4 is installed on the lower end surface of the upper deck 1, and referring to fig. 3 and 4, the first suspension device 4 includes a traverse guide rail 41 installed on the lower end surface of the upper deck 1, a traveling frame 42 traveling on the traverse guide rail 41, a first lifter 43 provided on the traveling frame 42, a first winch 44, and a second winch 45. The moving frame 42 is rotatably connected with a turntable 46, and the turntable 46 is horizontally arranged and is rotatably connected with the moving frame 42 around the axis thereof. The first lifter 43 is a hydraulic lifter, the first lifter 43, the first winch 44 and the second winch 45 are fixedly connected to the turntable 46, the first lifter 43 is provided with a lifting steel rope, and the first winch 44 and the second winch 45 are provided with connecting ropes.
A pair of deflector 14 of lower terminal surface installation at upper platform 1, two deflectors 14 are along longitudinal distribution and are located the both sides of installing hole 11, the length direction of deflector 14 is on a parallel with the length direction of upper platform 1, horizontal extension's direction spout 141 is seted up to deflector 14, direction spout 141 is located the below of lateral shifting guide rail 41 on the high position, the one end that direction spout 141 is close to pier 201 is uncovered setting, the uncovered flaring setting that is of direction spout 141. In step S3, a second suspension device above the upper deck 1 is installed on the bridge frame 20, the second suspension device is a second lifter 203, the second lifter 203 has a lifting wire rope, and the second lifter 203 is a hydraulic lifter.
Step S4, hoisting the prefabricated staircase 2, in this embodiment, the prefabricated staircase 2 is made of steel material, referring to fig. 5 and 6, the prefabricated staircase 2 includes an upper landing 21, a lower landing 22, an intermediate landing 23 located between the upper landing 21 and the lower landing 22, and a plurality of stairways 24 disposed between the upper landing 21 and the intermediate landing 23, and between the intermediate landing 23 and the lower landing 22. Go up stair platform 21's both sides wall and all slide and be connected with direction inserted bar 213, direction inserted bar 213's axis is vertical setting, goes up stair platform 21 and has installation cavity 211, goes up stair platform 21's up end and sets up the slip casting hole 214 that communicates in installation cavity 211, goes up stair platform 21's both sides wall and all sets up the hole that slides that communicates in installation cavity 211 for direction inserted bar 213 slides. A pair of sliding plates 212 are slidably connected to the mounting cavity 211, and a guide rod 213 is rotatably connected to the end surfaces of the two sliding plates 212 facing away from each other.
The upper landing 21 is provided with a control component 5 for controlling the guide insertion rod 213 to slide and extend out or retract into the upper landing 21, and the control component 5 comprises a movable shaft 51 which is vertically slid and penetrates through the top wall of the mounting cavity 211 and is located between the two sliding plates 212, and a first hinge rod 52 of which one end is hinged to the sliding plate 212 and the other end is hinged to the movable shaft 51. The anti-disengaging plate 53 arranged in the mounting cavity 211 is fixedly connected to the lower end of the movable shaft 51, an elastic member forcing the movable shaft 51 to retract inwards to slide in the direction of the mounting cavity 211 is arranged in the mounting cavity 211, specifically, the elastic member is a compression spring 54 sleeved on the movable shaft 51, one end of the compression spring 54 is fixedly connected to the inner wall of the top of the mounting cavity 211, the other end of the compression spring is fixedly connected to the upper end face of the anti-disengaging plate 53, and the guide insertion rod 213 extends out of the upper stair platform 21 in an initial state.
In step S4, the hoisting steel cable of the first hoist 43 is fixed to the middle landing 23, the connecting rope of the first hoist 44 is fixed to the lower landing 22, the connecting rope of the second hoist 45 is fixed to the stair step 24 between the upper landing 21 and the middle landing 23, the first hoist 43 lifts and lifts the prefabricated staircase 2 on the transportation vehicle below the upper landing 1, and the levelness of the upper landing 21 and the lower landing 22 is controlled by retracting and releasing the connecting rope of the first hoist 44 and the second hoist 45, so as to reduce the possibility of the prefabricated staircase 2 from being tilted.
The movable frame 42 moves to drive the upper stair platform 21 to slide towards the direction of the mounting hole 11 close to the upper platform 1, the prefabricated stair 2 rotates through the control turntable 46 in the moving process, the prefabricated stair 2 is steered, the guide insertion rods 213 protruding out of two sides of the upper stair platform 21 are arranged in the guide sliding grooves 141 in a sliding mode through the opening ends of the guide plates 14, the guide insertion rods 213 are arranged in the guide sliding grooves 141 in a sliding mode, the prefabricated floor slab is effectively positioned in a sliding mode, the possibility that the prefabricated floor slab shakes, warps or is unstable in the hoisting process is reduced, and the possibility that the prefabricated floor slab collides with the upper platform 1 is reduced.
When the upper stair platform 21 slides to the lower part of the mounting hole 11, the lifting steel rope of the second lifter 203 is fixed at the upper end of the movable shaft 51, when the second lifter 203 lifts the upper stair platform 21, the lifting steel rope of the second lifter 203 applies a vertical upward acting force to the movable shaft 51, the movable shaft 51 extends out of the mounting cavity 211, the first hinge rod 52 drives the two sliding plates 212 to slide towards the mutually approaching direction, so as to drive the guide insertion rod 213 to slide and retract into the mounting cavity 211, so that the guide insertion rod 213 is separated from the guide sliding groove 141, the first lifter 43 and the second lifter 203 continue to lift the prefabricated stair 2 to the position corresponding to the position of the guide insertion rod 213 and the insertion hole 12, the acting force applied to the movable shaft 51 by the second lifter 203 is released, the elastic piece forces the movable shaft 51 to slide and reset, the first hinge rod 52 drives the sliding plates 212 to slide towards the mutually departing direction, so that the guiding insertion rod 213 is inserted into the insertion hole 12, after the prefabricated staircase 2 is pre-fixed, concrete mortar is poured into the installation cavity 211 through the grouting hole 214, and the supporting steel plate 13 abutting against the lower end face of the upper landing 21 is welded on the upper landing 1.
Step S5, the lower-layer platform 3 is erected on the lowered temporary jacking upright post frame, after the lower-layer platform 3 is erected, the temporary jacking upright post frame is lifted to enable the lower end face of the lower stair platform 22 to be fixedly welded on the upper end face of the lower-layer platform 3, the middle part of the permanent steel upright post 103 is fixedly arranged on the lower-layer platform 3 in a penetrating mode, and the reinforcing steel upright post 31 is fixed between the upper-layer platform 1 and the lower-layer platform 3.
Example 2:
referring to fig. 7 and 8, the present embodiment is different from embodiment 1 in that the control assembly 5 includes a driving motor 56 fixedly connected to an inner wall of one side of the mounting cavity 211 and an adjusting screw 55 with one end rotatably connected to an inner wall of the other side of the mounting cavity 211, and the other end of the adjusting screw 55 is coaxially and fixedly connected to an output shaft of the driving motor 56. The axial direction of the adjusting screw 55 is parallel to the sliding direction of the sliding plates 212, the adjusting screw 55 is provided with a first threaded section and a second threaded section, the thread directions of the first threaded section and the second threaded section are opposite, and the two sliding plates 212 are respectively sleeved on the first threaded section and the second threaded section of the adjusting screw 55 in a threaded manner.
In step S4, when the upper landing 21 slides to the lower part of the installation hole 11, the hoisting cable of the second lifter 203 is fixed to the upper landing 21, the driving motor 56 rotates forward to drive the adjusting screw 55 to rotate, so as to drive the two sliding plates 212 to slide in the direction of approaching each other, so as to drive the guiding insertion rod 213 to slide and retract in the installation cavity 211, so as to separate the guiding insertion rod 213 from the guiding sliding groove 141, the first lifter 43 and the second lifter 203 continue to lift the prefabricated staircase 2 to the position where the guiding insertion rod 213 corresponds to the insertion hole 12, the driving motor 56 rotates in the reverse direction, so as to drive the two sliding plates 212 to slide in the direction of moving away from each other, so as to insert the guiding insertion rod 213 into the insertion hole 12, and drive the rack 62 to move, so as to drive the gear 61 to rotate, so as to drive the installation screw 215 to rotate, thereby to achieve both the insertion of the guiding insertion rod 213 into the insertion hole 12 and the screwing of the installation screw 215 into the threaded hole 15, improve the installation effectiveness of prefabricated staircase 2 when increasing the stability of being connected of prefabricated staircase 2 and upper landing 1.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A construction process for mounting and hanging a steel ladder based on a cross rail in a non-open space is characterized in that: the method comprises the following steps:
s1, building a column bearing platform (102) and a trestle enclosing the column bearing platform (102), wherein the column bearing platform (102) is fixed on the ground layer, building a temporary jacking column frame below a bridge frame (20) on the trestle, and building a platform steel column (101) on the existing platform (10);
s2, an upper platform (1) is built on the temporary jacking upright post frame, the upper platform (1) is provided with a mounting hole (11), the inner side wall of the mounting hole (11) is provided with a splicing hole (12), the upper platform (1) is positioned below the bridge frame (20), one side of the upper platform (1) is fixedly connected to a bracket support of a pier (201), the other side of the upper platform (1) is fixedly connected to a platform steel upright post (101), and the temporary jacking upright post frame falls off the upper platform (1);
step S3, installing a first suspension device (4) on the upper-layer platform (1), wherein the first suspension device (4) comprises a transverse moving guide rail (41) installed on the upper-layer platform (1), a moving frame (42) connected to the transverse moving guide rail (41) in a sliding manner, and a first lifter (43) arranged on the moving frame (42), and the first lifter (43) is provided with a lifting steel rope; a guide plate (14) is installed on the upper-layer platform (1), the guide plate (14) is provided with a transversely extending guide sliding groove (141), and one end of the guide sliding groove (141) is arranged in an open manner;
step S4, hoisting the prefabricated staircase (2), wherein the prefabricated staircase (2) comprises an upper staircase platform (21), a lower staircase platform (22), a middle staircase platform (23) positioned between the upper staircase platform (21) and the lower staircase platform (22) and a plurality of staircase steps (24) arranged between the upper staircase platform (21) and the middle staircase platform (23) and between the middle staircase platform (23) and the lower staircase platform (22), the side wall of the upper staircase platform (21) is connected with a guide inserted bar (213) in a sliding way, the upper staircase platform (21) is provided with an installation cavity (211), the two side walls of the upper staircase platform (21) are respectively provided with a sliding hole communicated with the installation cavity (211) for the guide inserted bar (213) to slide, the installation cavity (211) is connected with a pair of sliding plates (212) in a sliding way, the guide inserted bar (213) is arranged on the end surfaces of the two sliding plates (212) which are deviated from each other, the upper stair platform (21) is provided with a control component (5) for controlling the guide inserted bar (213) to slide out or retract into the upper stair platform (21), in step S4, the hoisting steel rope of the first lifter (43) is fixed on the middle stair platform (23), the moving frame (42) moves to drive the upper stair platform (21) to slide towards the direction close to the mounting hole (11) of the upper platform (1), in the moving process of the prefabricated stair (2), the guide inserted bar (213) extends out of the outer wall of the upper stair platform (21) and is slidably penetrated in the guide sliding groove (141), when the upper stair platform (21) slides to the lower part of the mounting hole (11), the two sliding plates (212) are driven by the control component (5) to slide towards the mutually close direction, so that the guide inserted bar (213) slides into the upper stair platform (21) to realize the separation of the guide inserted bar (213) and the guide sliding groove (141), the first lifter (43) continuously lifts the prefabricated staircase (2) to the position where the guide insertion rod (213) corresponds to the insertion hole (12), the control assembly (5) drives the two sliding plates (212) to slide towards the far direction to drive the guide insertion rod (213) to slide and extend out of the upper stair platform (21), and the guide insertion rod (213) is inserted into the insertion hole (12);
step S5, a lower platform (3) is erected, an upper platform (1) is erected on the lowered temporary jacking upright post frame, a lower stair platform (22) is fixedly connected to the lower platform (3), and the upper platform (1) and the lower platform (3) are fixed through a reinforced steel upright post (31).
2. The construction process for installing the suspended steel ladder based on the cross rails in the open space as claimed in claim 1, wherein: control assembly (5) including along vertical sliding wear locate installation cavity (211) roof and be located loose axle (51) between two sliding plates (212) and one end articulate in sliding plate (212) and the other end articulates in first articulated pole (52) of loose axle (51), be provided with in installation cavity (211) and force loose axle (51) towards being close to the elastic component that installation cavity (211) direction slided, in step S4, exert effort to loose axle (51) and make loose axle (51) stretch out installation cavity (211), drive two sliding plates (212) through first articulated pole (52) and slide towards the direction of being close to each other to drive direction inserted bar (213) slide the enshrinking in installation cavity (211).
3. The construction process for installing the suspended steel ladder based on the cross rails in the open space as claimed in claim 2, wherein: in the step S3, a second suspension device is installed on the bridge frame (20), the second suspension device includes a second lifter (203) installed on the bridge frame (20), the second lifter (203) has a lifting steel cable, in the step S4, the lifting steel cable of the second lifter (203) is fixed on the front end surface of the upper landing platform (21), when the upper landing platform (21) slides below the installation hole (11), the lifting steel cable of the second lifter (203) is fixed on the upper end of the movable shaft (51), in the process that the second lifter (203) lifts the upper landing platform (21), acting force is applied to the movable shaft (51) through the lifting steel cable, the movable shaft (51) extends out of the installation cavity (211), the two sliding plates (212) are driven to slide towards the mutually approaching direction through the first hinge rod (52), so as to drive the guide insertion rod (213) to slide and retract into the installation cavity (211), make direction inserted bar (213) break away from with direction spout (141), first riser (43) and second riser (203) continue to promote to prefabricated staircase (2) and lead inserted bar (213) and bayonet socket (12) position corresponding department, remove the effort that second riser (203) applyed to loose axle (51), the elastic component forces loose axle (51) to slide and resets, drive two sliding plates (212) through first articulated rod (52) and slide towards the direction of keeping away from each other for direction inserted bar (213) are inserted and are located bayonet socket (12).
4. The construction process for installing the suspended steel ladder based on the cross rails in the open space as claimed in claim 2, wherein: the guide insertion rod (213) is rotatably connected to the sliding plate (212).
5. The construction process of the rail-spanning installation and suspension steel ladder based on the open space as claimed in claim 1, is characterized in that: the plug-in holes (12) are strip-shaped holes extending along the transverse direction, threaded holes (15) are formed in the inner wall of the mounting hole (11), the end face of the upper stair platform (21) is rotatably connected with mounting screw rods (215) in threaded connection with the threaded holes (15), and the upper stair platform (21) is provided with a rotating assembly (6) for driving the mounting screw rods (215) to rotate.
6. The construction process for installing the suspended steel ladder based on the cross rails in the open space as claimed in claim 5, wherein: the rotating assembly (6) comprises a rack (62) fixedly connected to the sliding plates (212) and a gear (61) coaxially and fixedly sleeved on the mounting screw (215), the axis direction of the mounting screw (215) is transversely arranged, the rack (62) is meshed with the gear (61), the length direction of the rack (62) is parallel to the sliding direction of the sliding plates (212), in step S4, when the two sliding plates (212) slide towards the mutually away direction, the guide inserting rod (213) is driven to be inserted into the inserting hole (12) and the rack (62) is driven to move, the rack (62) moves to drive the gear (61) to rotate, so that the mounting screw (215) is driven to rotate, and the mounting screw (215) is screwed in the threaded hole (15).
7. The construction process for installing the suspended steel ladder based on the cross rails in the open space as claimed in claim 5, wherein: in the step S4, after the mounting screw (215) is screwed into the threaded hole (15), the support steel plate (13) is fixedly mounted on the inner side wall of the mounting hole (11) where the threaded hole (15) is opened, and the support steel plate (13) abuts against the lower end face of the upper landing (21).
8. The construction process of the non-open space inner-span rail-mounted suspension steel ladder based on claim 2 is characterized in that: and in the step S4, after the guide insertion rod (213) is inserted into the insertion hole (12), concrete mortar is poured into the installation cavity (211) through the grouting hole (214).
9. The construction process for installing the suspended steel ladder based on the cross rails in the open space as claimed in claim 2, wherein: the moving frame (42) is provided with a first winch (44) and a second winch (45), the first winch (44) and the second winch (45) are both provided with connecting ropes, in step S4, the connecting ropes of the first winch (44) are fixed to a lower stair platform (22), and the connecting ropes of the second winch (45) are fixed to stair steps (24) between an upper stair platform (21) and a middle stair platform (23).
10. The construction process for installing the suspended steel ladder based on the cross rails in the open space as claimed in claim 9, wherein: the moving frame (42) is rotatably connected with a rotary table (46), and the first lifter (43), the first winch (44) and the second winch (45) are arranged on the rotary table (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483945.8A CN115030036A (en) | 2022-05-06 | 2022-05-06 | Construction process for mounting suspended steel ladder based on cross rail in non-open space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483945.8A CN115030036A (en) | 2022-05-06 | 2022-05-06 | Construction process for mounting suspended steel ladder based on cross rail in non-open space |
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| CN115030036A true CN115030036A (en) | 2022-09-09 |
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| CN202210483945.8A Pending CN115030036A (en) | 2022-05-06 | 2022-05-06 | Construction process for mounting suspended steel ladder based on cross rail in non-open space |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116768070A (en) * | 2023-02-07 | 2023-09-19 | 中铁广州工程局集团有限公司 | Wharf truss double-beam type hoisting machine and multidirectional beam feeding and erection construction method |
-
2022
- 2022-05-06 CN CN202210483945.8A patent/CN115030036A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116768070A (en) * | 2023-02-07 | 2023-09-19 | 中铁广州工程局集团有限公司 | Wharf truss double-beam type hoisting machine and multidirectional beam feeding and erection construction method |
| CN116768070B (en) * | 2023-02-07 | 2024-06-04 | 中铁广州工程局集团有限公司 | Wharf truss double-beam type hoisting machine and multidirectional beam feeding and erection construction method |
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