CN116985259A - Construction method of assembled stair with corner protector - Google Patents
Construction method of assembled stair with corner protector Download PDFInfo
- Publication number
- CN116985259A CN116985259A CN202311266482.0A CN202311266482A CN116985259A CN 116985259 A CN116985259 A CN 116985259A CN 202311266482 A CN202311266482 A CN 202311266482A CN 116985259 A CN116985259 A CN 116985259A
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- Prior art keywords
- die
- angle steel
- screw
- mould
- fixedly connected
- Prior art date
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- Granted
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- 230000001012 protector Effects 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 32
- 230000001360 synchronised effect Effects 0.000 claims description 22
- 239000011324 bead Substances 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 9
- 230000000670 limiting effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/382—Devices for treating, e.g. sanding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/386—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/388—Treating surfaces of moulds, cores, or mandrels to prevent sticking with liquid material, e.g. lubricating
Abstract
The invention discloses a construction method of an assembled stair with a corner protector, which belongs to the technical field of assembled stair construction and comprises the following steps: s1, cleaning a die; s2, installing special angle steel corner protector; s3, installing a die; s4, maintaining; s5, assembling the stair with the corner protector; the die comprises a mounting seat, a sliding rail is longitudinally and fixedly connected to the upper end of the mounting seat, a bottom die is fixedly connected to the upper end of the mounting seat, a tread die and a side die are respectively arranged in the front-back direction of the bottom die, and end dies can be fixedly connected to the two ends of the tread die and the two ends of the side die together. The mould used in the construction method disclosed by the invention is used for smoothly folding the large-volume and large-weight tread surface mould and the side mould towards the mounting seat through the sliding rail, so that the assembly process of the mould is smoother and easier.
Description
Technical Field
The invention relates to the technical field of assembly type stair construction, in particular to a construction method of an assembly type stair with a corner protector.
Background
In the traditional production process of the prefabricated stairway, a vertical stairway steel mould is often adopted, and a large amount of manual work and mechanical cooperation are required for mould assembling and mould disassembling. In addition, the production process of pre-buried angle bead is not carried out in the original prefabricated staircase production process, so that the stair tread edges and corners are extremely easy to damage in the transportation, installation and use processes.
The traditional assembly type stairway is quite time-consuming in mould assembling and demoulding in the prefabrication process, the pre-buried angle steel angle bead is easy to shift in the traditional mould, is not firmly connected with concrete, is easy to overflow slurry, causes a plurality of defects in appearance quality of the stairway, and influences the production efficiency and the primary qualification rate of the assembly type stairway.
Based on the construction method, the invention designs a construction method of the assembled stair with the corner protector, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a construction method of an assembled stair with an angle bead, which aims to solve the problems that in the prior art, the traditional assembled stair prefabricating equipment is required to be assembled and demoulded, labor and time are required to be wasted, the pre-buried angle bead is easy to shift, the connection with concrete is not firm, slurry is easy to overflow, so that the appearance quality of the stair has a plurality of defects, and the production efficiency and the primary qualification rate of the assembled stair are affected.
In order to achieve the above purpose, the present invention provides the following technical solutions: a construction method of an assembled stair with a corner protector comprises the following steps:
s1, cleaning a die; cleaning the bottom die surface, the side die surface and the end die surface, and focusing on treating residues such as concrete slag, joint glue and the like on the die surface and joints, so as to ensure that the contact surface of the die and the concrete is clean and no residues affecting the appearance of the component are left;
s2, installing special angle steel corner protector; a special angle steel angle bead is installed and fixed on the stair tread surface die 14 through a drilling tail wire; coating demolding oil, hoisting a reinforcement cage with corresponding specification, and placing the reinforcement cage in an assembled mold; determining the position of a pre-buried component required by the prefabricated staircase on a mould and fixing the pre-buried component;
s3, installing a die; after the related matters such as adjustment, pre-embedding and reservation of the reinforcing steel bars are completed, the side dies are moved to form a die set, and bolts are used for reinforcing all the components; then concrete pouring and vibrating are carried out;
s4, maintaining; pouring, vibrating and leveling concrete is completed, the concrete is covered for about twelve hours, the normal temperature curing is more than seven days, and the special curing is more than fourteen days;
s5, assembling the stair with the corner protector; and (3) disassembling the component dies according to the mounting sequence of the dies, removing the side dies by utilizing the sliding guide rail, demolding the prefabricated components, and hoisting and fixing the finished stair with the corner protector in a reserved position of a building by using the crane.
The die comprises a mounting seat, vertical fixedly connected with slide rail of mount pad upper end, mount pad upper end fixedly connected with die block, the direction is provided with face mould and side mould of marking time respectively around the die block, face mould and side mould lower extreme all with slide rail sliding connection mark time, face mould and side mould of marking time can pass through bolt and die block lateral wall fixed connection, face mould of marking time and side mould both ends all can be common fixedly connected with end mould.
As a further scheme of the invention, the special angle steel angle bead comprises angle steel, wherein the angle steel is arranged at the corner position of the tread surface die, and a plurality of reinforcing rods which are vertically arranged in an array are fixedly connected to two side walls of the angle steel facing the inside of the die.
As a further scheme of the invention, the pedal surface die is provided with a mounting hole coaxial with the reinforcing rod at the position corresponding to the reinforcing rod, the reinforcing rod is internally provided with a threaded hole which penetrates through the angle steel coaxially with the mounting hole, the threaded hole is internally provided with a screw, and the screw is used for fixing the angle steel from the outer side of the pedal surface die.
As a further scheme of the invention, clamping plates are connected to the outer side wall of the tread surface die corresponding to the side wall of the angle steel in a sliding manner, U-shaped grooves are formed in the positions, corresponding to the mounting holes, of the clamping plates, the screw rod parts of the screws can penetrate through the U-shaped grooves, and the screw head parts of the screws cannot penetrate through the U-shaped grooves.
As a further aspect of the present invention, the screw includes a shaft portion coaxially and elastically slidably connected with a screw head.
As a further scheme of the invention, connecting rods are fixedly connected to the positions of the stepping surface dies corresponding to the clamping plates, nuts are coaxially arranged at the positions of the stepping surface dies corresponding to the mounting holes, the nuts are fixedly connected with the connecting rods, the nuts are in threaded connection with sleeves, the ends of the sleeves, which are close to the mounting holes, are elastically connected with screwdrivers, limiting mechanisms are arranged on the inner walls of the sleeves, the limiting mechanisms are used for limiting the screwdrivers to rotate, synchronous wheels are fixedly connected to the ends, which are far away from the mounting holes, of the sleeves, and the synchronous wheels are provided with transmission mechanisms which are used for controlling the synchronous wheels to rotate.
As a further scheme of the invention, the transmission mechanism comprises a plurality of synchronous belts, the synchronous wheels corresponding to the sides of the same clamping plate are connected with one synchronous belt in a transmission way, the synchronous belts are externally connected with driving mechanisms, and the driving mechanisms are used for driving the synchronous belts to rotate.
As a further scheme of the invention, the limiting mechanism comprises a V-shaped groove, the inner wall of the sleeve is provided with a mounting cavity, the mounting cavity is connected with a V-shaped block in a sliding manner, the V-shaped block can be clamped with the V-shaped groove, and an elastic mechanism is arranged in the mounting cavity and used for extruding the V-shaped block to a screwdriver.
As a further scheme of the invention, the elastic mechanism comprises a sliding plate, the sliding plate is in sliding connection with the mounting cavity, the outer side wall of the sleeve is in threaded connection with a screw rod in a penetrating mode, the screw rod is fixedly connected with the sliding plate, and an elastic piece is fixedly connected between the sliding plate and the V-shaped block.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the sliding rail is arranged, so that after the embedded parts in the die are installed, the large-size and large-weight tread surface die and the side die can be smoothly folded towards the mounting seat through the sliding rail, the die assembly process is smoother and easier, and meanwhile, construction accidents and risks caused by collision of the tread surface die and the side die on the embedded parts or personnel due to the fact that the tread surface die and the side die are not easy to control in the die assembly process are avoided.
2. The angle steel is fixed with the tread surface die through the screw, so that the problems that in practical application, the angle steel angle bead positioning and the fitting degree do not meet the use requirements, concrete is overflowed between the angle steel and the tread surface die, the angle steel is misplaced and the like are solved.
3. The slidable clamping plate is utilized to provide support for the screw head of the screw, so that the clamping plate is pushed reversely, the U-shaped groove leaves the mounting hole, the connection relationship between the screw and the tread surface die is further relieved, the connection relationship between the angle steel and the tread surface die is further relieved, the screw is not required to be treated in the die demoulding process (the die can be demoulded after the fixed connection between the angle steel and the tread surface die is required to be relieved), and the demoulding process is more convenient.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of a mold assembly (tread top plate hidden);
FIG. 3 is a schematic diagram of the overall structure of the present invention;
FIG. 4 is a schematic diagram of a tread pattern structure;
FIG. 5 is an enlarged schematic view of the structure A in FIG. 4;
FIG. 6 is a schematic diagram of a top-down section of a tread angle;
FIG. 7 is an enlarged schematic view of the structure shown at B in FIG. 6;
FIG. 8 is a schematic diagram of the structure of the screw and screwdriver mechanism;
FIG. 9 is a schematic cross-sectional view of FIG. 8;
FIG. 10 is an enlarged schematic view of the structure of FIG. 9C;
fig. 11 is a schematic structural view of angle steel.
In the drawings, the list of components represented by the various numbers is as follows:
mounting base 11, slide rail 12, bottom die 13, tread surface die 14, side die 15, end die 16, angle steel 21, reinforcing rod 22, threaded hole 3, clamping plate 41, U-shaped groove 42, threaded rod 51, screw head 52, connecting rod 61, nut 62, sleeve 63, screwdriver 64, synchronizing wheel 65, synchronous belt 66, V-shaped groove 71, mounting cavity 72, V-shaped block 73, slide plate 81, screw 82, elastic member 83.
Detailed Description
Referring to fig. 1 to 11, the present invention provides a technical solution: a construction method of an assembled stair with a corner protector comprises the following steps:
s1, cleaning a die; cleaning the bottom die surface, the side die surface and the end die surface, and focusing on treating residues such as concrete slag, joint glue and the like on the die surface and joints, so as to ensure that the contact surface of the die and the concrete is clean and no residues affecting the appearance of the component are left;
s2, installing special angle steel corner protector; a special angle steel angle bead is installed and fixed on the stair tread surface die 14 through a drilling tail wire; coating demolding oil, hoisting a reinforcement cage with corresponding specification, and placing the reinforcement cage in an assembled mold; determining the position of a pre-buried component required by the prefabricated staircase on a mould and fixing the pre-buried component;
s3, installing a die; after the related matters such as adjustment, pre-embedding and reservation of the reinforcing steel bars are completed, the side dies are moved to form a die set, and bolts are used for reinforcing all the components; then concrete pouring and vibrating are carried out;
s4, maintaining; pouring, vibrating and leveling concrete is completed, the concrete is covered for about twelve hours, the normal temperature curing is more than seven days, and the special curing is more than fourteen days;
s5, assembling the stair with the corner protector; and (3) disassembling the component dies according to the mounting sequence of the dies, removing the side dies by utilizing the sliding guide rail, demolding the prefabricated components, and hoisting and fixing the finished stair with the corner protector in a reserved position of a building by using the crane.
The mould includes mount pad 11, and mount pad 11 upper end vertical fixedly connected with slide rail 12, mount pad 11 upper end fixedly connected with die block 13, die block 13 fore-and-aft direction is provided with respectively face mould 14 and side mould 15 of marking time, and face mould 14 and side mould 15 lower extreme all with slide rail 12 sliding connection of marking time can be through bolt and die block 13 lateral wall fixed connection to face mould 14 and side mould 15 of marking time, and face mould 14 and side mould 15 both ends of marking time all can be together fixedly connected with end mould 16.
After the mould is cleaned, a special angle steel angle bead is installed and fixed on the stair tread surface mould 14 by using a drilling tail wire; coating demolding oil, hoisting a reinforcement cage with corresponding specification, and placing the reinforcement cage in an assembled mold; then, the position of the pre-embedded components such as the locating pins and the like required by the prefabricated staircase is determined on the die and fixed; after the related matters such as the adjustment, pre-embedding and reservation of the reinforcing steel bars are completed, moving a side die (the side die is a general name of a tread surface die 14 and a side die 15) to form a die set through a sliding rail 12, folding the tread surface die 14 and the side die 15 towards the front end and the rear end of the mounting seat 11 respectively, mounting two end dies 16 at the left end and the right end of the mounting seat 11 respectively, and reinforcing each part by bolts; pouring and vibrating concrete, and using reasonable distribution routes of firstly far and secondly near, firstly narrow and secondly wide according to the size, structure and other characteristics of the mould; after receiving the material, moving the material distribution trolley from one end, and opening a material outlet door according to the width of the material to be distributed; according to the unloading speed of the concrete, the distribution trolley is regulated to a proper speed and then kept at a uniform speed, so that the distribution is uniform and full once in place; vibrating the concrete to achieve a state that the surface is flat and no bubbles are generated; curing: the concrete which is poured, vibrated and leveled should be covered for about twelve hours, and the curing at normal temperature is generally not less than seven days, and the special curing is not less than fourteen days; disassembling the die: disassembling the component dies according to the mounting sequence of the dies, firstly removing the side dies by utilizing the sliding guide rail, and then demolding the prefabricated components; and finally, hoisting and fixing the finished assembled stair in a reserved position of the building through a crane.
According to the invention, by arranging the slide rail 12, after the embedded parts in the die are installed, the large-volume and large-weight tread surface die 14 and the side die 15 can be smoothly folded towards the installation seat 11 through the slide rail 12, so that the die assembly process is smoother and easier, and meanwhile, construction accidents and risks caused by collision of the tread surface die 14 and the side die 15 on the embedded parts or personnel due to the fact that the tread surface die 14 and the side die 15 are not easy to control in the die assembly process are avoided.
The special angle steel angle bead comprises angle steel 21, wherein the angle steel 21 is arranged at the corner position of the tread surface die 14, and a plurality of reinforcing rods 22 which are arranged in a vertical array are fixedly connected to two side walls of the angle steel 21 facing the inside of the die.
Before the mould is assembled, the angle steel 21 is attached to the corner position of the tread surface mould 14 to be fixed, so that the finally formed stair tread edge is provided with the angle steel 21 to protect the stair, the stair tread edge is further prevented from being damaged in the transportation, installation and use processes, and meanwhile, the combination of the special angle steel angle bead and the concrete is more stable through the increase of each reinforcing rod 22.
In addition, the department that the tread surface mould 14 corresponds the stiffening rod 22 has seted up the mounting hole coaxial with stiffening rod 22, has seted up the screw hole 3 that runs through angle steel 21 in the stiffening rod 22 coaxial with the mounting hole, installs the screw in the screw hole 3, and the screw is used for fixing angle steel 21 from the outside of tread surface mould 14.
The angle steel 21 and the tread surface die 14 are fixed through the screws (before the angle steel 21 is fixed by the screws, the positions of the angle steel 21 and the tread surface die 14 can be determined and maintained through manual work or a fixture, so that the problems that in practical application, the angle steel angle bead positioning and the fitting degree do not meet the use requirements, concrete is overflowed between the angle steel 21 and the tread surface die 14, the angle steel 21 is misplaced and the like are solved.
The outer side wall of the tread surface die 14 is correspondingly connected with clamping plates 41 in a sliding manner, U-shaped grooves 42 are respectively formed in positions, corresponding to the mounting holes, of the clamping plates 41, the screw portions of the screws can penetrate through the U-shaped grooves 42, and the screw portions of the screws cannot penetrate through the U-shaped grooves 42.
When the device works, the clamping plate 41 is pushed to enable the U-shaped groove 42 to cover the mounting hole, then the screw is mounted into the threaded hole 3, the clamping plate 41 and the side wall of the tread surface die 14 are clamped between the screw head of the screw and the angle steel 21, the angle steel 21 and the tread surface die 14 are further fixed with each other, after concrete is solidified, the clamping plate 41 is pushed reversely, the U-shaped groove 42 leaves the mounting hole, the connection relation between the screw and the tread surface die 14 is further released, the connection relation between the angle steel 21 and the tread surface die 14 is further released, the screw is not required to be processed in the die demoulding process (the die can be demoulded after the fixed connection between the angle steel 21 and the tread surface die 14 is required to be released), and the demoulding process is more convenient; after demoulding, the screw is screwed down, so that the screw head of the screw is tightly attached to the side wall of the angle steel 21.
The screw comprises a threaded shaft 51, and the threaded shaft 51 is coaxially and elastically connected with a screw head 52 in a sliding manner.
In the process of screwing the screw into the threaded hole 3, the screw head 52 overcomes the elasticity and is far away from the threaded rod 51, after the clamping plate 41 is pulled away, the screw head 52 is attached to the side wall surface of the angle steel 21 under the action of the elasticity of the elastic piece, and after the die is demolded, the screw is not required to be screwed.
The pedal face mould 14 corresponds the equal fixedly connected with connecting rod 61 of cardboard 41 department, pedal face mould 14 side corresponds the equal coaxial nut 62 that is provided with of mounting hole position, nut 62 and connecting rod 61 fixed connection, nut 62 equal threaded connection has sleeve 63, sleeve 63 is close to the equal elastic connection of mounting hole one end and has screwdriver 64, sleeve 63 inner wall is provided with stop gear, stop gear is used for restricting the relative sleeve 63 rotation of screwdriver 64, sleeve 63 keeps away from the equal fixedly connected with synchronizing wheel 65 of mounting hole one end, synchronizing wheel 65 all is provided with drive mechanism, drive mechanism is used for controlling synchronizing wheel 65 rotation.
During operation, firstly, a screw is preassembled into the threaded hole 3, then the synchronous wheel 65 is controlled to rotate through the transmission mechanism, the synchronous wheel 65 and the sleeve 63 rotate relative to the nut 62, the sleeve 63 is further moved towards the screw head 52, the screw driver 64 is pressed towards the screw head 52 and rotates (the limiting mechanism limits the screw driver 64 to rotate relative to the sleeve 63), in the process, the screw driver 64 is clamped into a clamping groove on the screw head 52, the screw rotates under the action of the screw driver 64 and enters into the threaded hole 3 to be screwed, until the torque between the sleeve 63 and the screw driver 64 is overlarge, and the limiting effect of the limiting mechanism is invalid.
The transmission mechanism comprises a plurality of synchronous belts 66, synchronous wheels 65 corresponding to the sides of the same clamping plate 41 are connected with one synchronous belt 66 in a transmission manner, the synchronous belts 66 are externally connected with driving mechanisms, and the driving mechanisms are used for driving the synchronous belts 66 to rotate.
The driving mechanism drives the synchronous belt 66 to rotate, so that screws corresponding to the same side wall of the angle steel 21 are synchronously screwed, further, the torque born by the screws corresponding to the same side wall of the angle steel 21 is uniform (in the screwing process of a single screw, the angle steel 21 and the tread surface die 14 near the screws are clamped, the angle steel 21 is slightly bent, reaction force can be generated between the angle steel 21 and the tread surface die 14, and elasticity generated by bending of the angle steel 21 is generated, so that the screwing difficulty of the screws is increased, namely, the torque born by the screws is increased, correspondingly, if all the screws are screwed simultaneously, the bending degree of the angle steel 21 is avoided or weakened, and the screwing difficulty of the screws is reduced), the repeated screwing working process of the screws is further avoided, and meanwhile, the screw strength required for thoroughly locking the tread surface die 14 and the angle steel 21 is reduced (because the telescopic screw is adopted, the mechanical strength of the screws is greatly reduced compared with that of the traditional screw, the required screw strength is further reduced, and the manufacturing difficulty and cost of the telescopic screw are greatly reduced).
The stop gear includes V-arrangement groove 71, and installation cavity 72 has been seted up to sleeve 63 inner wall, and installation cavity 72 sliding connection has V-arrangement piece 73, and V-arrangement piece 73 can block with V-arrangement groove 71, is provided with elastic mechanism in the installation cavity 72, and elastic mechanism is used for extrudeing V-arrangement piece 73 to screwdriver 64 department.
The V-shaped block 73 is engaged with the V-shaped groove 71, so that the screwdriver 64 can only slide relative to the sleeve 63, when the torque between the screwdriver 64 and the sleeve 63 is too large, the V-shaped block 73 is extruded into the mounting cavity 72, the V-shaped block 73 is separated from the V-shaped groove 71, the screwdriver 64 and the sleeve 63 can rotate, and the screwdriver 64 does not drive the screw to rotate any more.
The elastic mechanism comprises a sliding plate 81, the sliding plate 81 is in sliding connection with the mounting cavity 72, a screw 82 penetrates through the outer side wall of the sleeve 63 and is in threaded connection with the outer side wall of the sleeve, the screw 82 is fixedly connected with the sliding plate 81, and an elastic piece 83 is fixedly connected between the sliding plate 81 and the V-shaped block 73.
The position of the sliding plate 81 in the mounting cavity 72 is changed by rotating the screw 82, so that the total length of the elastic piece 83 is changed when the V-shaped block 73 is clamped with the V-shaped groove 71, the elastic force of the elastic piece 83 is further changed, and the maximum torque of the screw driver 64 can be born by the limiting mechanism.
Claims (10)
1. A construction method of an assembled stair with a corner protector is characterized by comprising the following steps: the method comprises the following steps:
s1, cleaning a die; cleaning the bottom die surface, the side die surface and the end die surface, and focusing on treating residues such as concrete slag, joint glue and the like on the die surface and joints, so as to ensure that the contact surface of the die and the concrete is clean and no residues affecting the appearance of the component are left;
s2, installing special angle steel corner protector; a special angle steel angle bead is installed and fixed on the stair tread surface die (14) through a drilling tail wire; coating demolding oil, hoisting a reinforcement cage with corresponding specification, and placing the reinforcement cage in an assembled mold; determining the position of a pre-buried component required by the prefabricated staircase on a mould and fixing the pre-buried component;
s3, installing a die; after the related matters such as adjustment, pre-embedding and reservation of the reinforcing steel bars are completed, the side dies are moved to form a die set, and bolts are used for reinforcing all the components; then concrete pouring and vibrating are carried out;
s4, maintaining; pouring, vibrating and leveling concrete is completed, the concrete is covered for about twelve hours, the normal temperature curing is more than seven days, and the special curing is more than fourteen days;
s5, assembling the stair with the corner protector; and (3) disassembling the component dies according to the mounting sequence of the dies, removing the side dies by utilizing the sliding guide rail, demolding the prefabricated components, and hoisting and fixing the finished stair with the corner protector in a reserved position of a building by using the crane.
2. The utility model provides a construction mould of assembled area angle bead stair, is applicable to the construction method of assembled area angle bead stair of claim 1, its characterized in that: the die comprises a mounting seat (11), a sliding rail (12) is longitudinally fixedly connected to the upper end of the mounting seat (11), a bottom die (13) is fixedly connected to the upper end of the mounting seat (11), a tread die (14) and a side die (15) are respectively arranged in the front-back direction of the bottom die (13), the lower ends of the tread die (14) and the side die (15) are both in sliding connection with the sliding rail (12), the tread die (14) and the side die (15) can be fixedly connected with the side wall of the bottom die (13) through bolts, and end dies (16) can be fixedly connected to the two ends of the tread die (14) and the two ends of the side die (15) together.
3. The construction mold for the fabricated stairway with corner protectors as claimed in claim 2, wherein: the special angle steel angle bead comprises angle steel (21), wherein the angle steel (21) is arranged at the corner position of the stepping surface die (14), and a plurality of reinforcing rods (22) which are arranged in a vertical array are fixedly connected to two side walls of the angle steel (21) facing the inside of the die.
4. A construction mould for a fabricated stairway with corner protectors as claimed in claim 3, characterised in that: the pedal face mold (14) is provided with a mounting hole coaxial with the reinforcing rod (22) corresponding to the reinforcing rod (22), the reinforcing rod (22) is internally provided with a threaded hole (3) penetrating through the angle steel (21) coaxial with the mounting hole, the threaded hole (3) is internally provided with a screw, and the screw is used for fixing the angle steel (21) from the outer side of the pedal face mold (14).
5. The construction mold for the fabricated stairway with corner protectors as claimed in claim 4, wherein: the pedal face mold is characterized in that clamping plates (41) are slidably connected to the side walls of the outer side walls of the pedal face mold (14) corresponding to the angle steel (21), U-shaped grooves (42) are formed in the positions, corresponding to the mounting holes, of the clamping plates (41), the screw portions of the screws can penetrate through the U-shaped grooves (42), and the screw head portions of the screws cannot penetrate through the U-shaped grooves (42).
6. The construction mold for the fabricated stairway with corner protectors as claimed in claim 5, wherein: the screw comprises a threaded rod (51), and the threaded rod (51) is coaxially and elastically connected with a screw head (52) in a sliding manner.
7. The construction mold for the fabricated stairway with corner protectors as claimed in claim 6, wherein: the utility model discloses a pedal face mould, including pedal face mould (14), clamping plate (41) department, pedal face mould (14) side corresponds mounting hole position all coaxial be provided with nut (62), nut (62) and connecting rod (61) fixed connection, nut (62) equal threaded connection has sleeve (63), sleeve (63) are close to equal elastic connection of mounting hole one end have screwdriver (64), sleeve (63) inner wall is provided with stop gear, stop gear is used for restricting screwdriver (64) rotation, sleeve (63) are kept away from equal fixedly connected with synchronizing wheel (65) of mounting hole one end, synchronizing wheel (65) all are provided with drive mechanism, drive mechanism is used for controlling synchronizing wheel (65) rotation.
8. The construction mold for the fabricated stairway with corner protectors as claimed in claim 7, wherein: the transmission mechanism comprises a plurality of synchronous belts (66), the synchronous wheels (65) corresponding to the sides of the same clamping plate (41) are connected with one synchronous belt (66) in a transmission mode, the synchronous belts (66) are externally connected with driving mechanisms, and the driving mechanisms are used for driving the synchronous belts (66) to rotate.
9. The construction mold for the fabricated stairway with corner protectors as claimed in claim 7, wherein: the limiting mechanism comprises a V-shaped groove (71), an installation cavity (72) is formed in the inner wall of the sleeve (63), the installation cavity (72) is connected with a V-shaped block (73) in a sliding mode, the V-shaped block (73) can be clamped with the V-shaped groove (71), an elastic mechanism is arranged in the installation cavity (72), and the elastic mechanism is used for extruding the V-shaped block (73) to a screwdriver (64).
10. The construction mold for the fabricated stairway with corner protectors as claimed in claim 9, wherein: the elastic mechanism comprises a sliding plate (81), the sliding plate (81) is slidably connected with the mounting cavity (72), a screw (82) penetrates through the outer side wall of the sleeve (63) in a threaded mode, the screw (82) is fixedly connected with the sliding plate (81), and an elastic piece (83) is fixedly connected between the sliding plate (81) and the V-shaped block (73).
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| CN202311266482.0A CN116985259B (en) | 2023-09-28 | 2023-09-28 | Construction method of assembled stair with corner protector |
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| CN202311266482.0A CN116985259B (en) | 2023-09-28 | 2023-09-28 | Construction method of assembled stair with corner protector |
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| CN116985259B CN116985259B (en) | 2023-12-08 |
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|---|---|
| CN116985259B (en) | 2023-12-08 |
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