Prefabricated stair preparation process

Abstract

The invention discloses a prefabricated stair preparation technology, and relates to the technical field of prefabricated stair preparation, the prefabricated stair preparation technology comprises a fixing mechanism, the top of the fixing mechanism is provided with a forming mechanism, the top of the forming mechanism is provided with a leveling mechanism, the forming mechanism comprises a mold bottom plate, one side of the mold bottom plate is provided with a push plate, and the other side of the mold bottom plate is provided with a sealing plate; the leveling mechanism comprises a movable plate, movable bases are installed at the two ends of the movable plate, hydraulic cylinders are arranged at the tops of the two movable bases, a driving component is arranged on the outer side of the movable plate, a movable frame is arranged at the output end of the driving component, and a scraper is installed at the bottom of the movable frame. The stair mold is jointly formed by the mold bottom plate, the push plate and the sealing plate, pouring of a prefabricated stair can be conducted, meanwhile, a worker can conveniently conduct pouring and demolding on the stair, the driving component drives the scraper to move, poured concrete can be leveled, and the flatness of the bottom of the stair can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated stair preparation, in particular to a prefabricated stair preparation process. BACKGROUND

[0002] Prefabricated stairs are common components in prefabricated buildings, which are prefabricated stair assemblies completed in factories or construction sites, and are assembled and connected after being transported to the site.

[0003] A wear-resistant prefabricated stair sizing mold and its manufacturing process, with publication number CN114800802B, belong to the mechanical technology field. It solves the problem of poor stability in existing technology. The wear-resistant prefabricated stair sizing mold includes a base, a forming plate, a cover plate, and a pressing block. The inside of the base is a cavity with an open upper end. The lower part of the forming plate is a flat contact surface, and the upper part of the forming plate has a forming part that matches the stair step surface. The contact surface is in contact with the bottom surface inside the base, and the two sides of the forming plate are respectively attached to the two inner sides of the base. The manufacturing process of the wear-resistant prefabricated stair includes the following steps: A, preparation; B, mold closing; C, pouring; D, demolding. The wear-resistant prefabricated stair sizing mold forms the prefabricated stair quickly, and the manufacturing process of the wear-resistant prefabricated stair can produce prefabricated stairs with high wear resistance on the stair step surface.

[0004] The existing technology has the following disadvantages: the surface of the poured concrete cannot be quickly kept flat during the preparation of the existing prefabricated stairs, and after the formed stairs are demolded, the concrete is easily adhered to the mold, which will affect the subsequent pouring of the stairs and make the formed stairs prone to defects, affecting the quality of the prefabricated stairs. SUMMARY

[0005] The purpose of the present application is to provide a prefabricated stair preparation process, which uses a mold base plate, a push plate, and a sealing plate to form a stair mold, which can pour prefabricated stairs and facilitate pouring and demolding of the stairs by the staff. The driving component drives the scraper to move, which can level the poured concrete and ensure the flatness of the stair bottom, to solve the above-mentioned deficiencies in the art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a prefabricated stair preparation process, comprising the following steps:

[0007] S1, mold cleaning and demolding agent spraying, using a broom to remove residual concrete in the mold, high-pressure air pipe cooperating with a fish tail shovel to clean thoroughly, and wearing protective glasses when operating. Spray the demolding agent and evenly spread it, the amount should be moderate to avoid affecting the demolding effect, and the mold surface should be wiped smooth after oiling;

[0008] S2, steel reinforcement binding and pre-embedded installation, according to the drawing requirements to bind the stair reinforcement, ensure that the head of the wire is curved towards the inside or parallel to the reinforcement surface, avoid scratching. Pre-embedded lifting bolts, anti-skid grooves and other components, and check the accuracy of the reserved hole position;

[0009] S3, concrete pouring and vibrating, test the slump of concrete before pouring (usually 3 times), ensure the fluidity meets the requirements. Use high-frequency vibrating machine to compact the concrete and eliminate honeycomb defects, and the surface is finished to be flat;

[0010] S4, maintenance and demolding, remove the formwork after reaching the lifting strength, and the release agent needs to be evenly covered to ensure the surface quality of the component. Control the temperature and humidity during the curing period to ensure that the concrete strength meets the standard;

[0011] S5, lifting preparation and finished product protection, use steel wire rope and pre-embedded lifting points when lifting the prefabricated stairs, control the length of the lifting cable to make both ends fall synchronously. Cover the steps with wooden boards after installation to prevent construction pollution or damage.

[0012] Preferably, the mold in S1 comprises a fixing mechanism, a forming mechanism is arranged at the top of the fixing mechanism, and a flattening mechanism is arranged at the top of the forming mechanism;

[0013] The forming mechanism comprises a mold bottom plate, a push plate is arranged on one side of the mold bottom plate, and a sealing plate is arranged on the other side of the mold bottom plate; adjusting lead screws are threadedly connected to both ends of the sealing plate; and servo motors are arranged on one side of the two adjusting lead screws.

[0014] The flattening mechanism comprises a movable plate, the movable plate is arranged on the top of the mold bottom plate, movable seats are fixedly installed at both ends of the movable plate, hydraulic cylinders are arranged on the top of the two movable seats, a driving part is arranged on the outer side of the movable plate, a moving frame is arranged at the output end of the driving part, and a scraper is fixedly installed at the bottom of the moving frame.

[0015] Preferably, the fixing mechanism comprises a fixed bottom plate, fixed frames are fixedly installed on the outer walls of both ends of the fixed bottom plate, a controller is fixedly installed on one end of one of the fixed frames, and movable grooves are formed in the top of the two fixed frames.

[0016] Preferably, the top of each of the two fixed frames is fixedly connected with a hydraulic cylinder, and the bottom of the piston rod of each of the two hydraulic cylinders penetrates through the inner wall of the top of the movable groove and is fixedly connected with the top of the adjacent movable seat.

[0017] Preferably, the top of the fixed bottom plate is fixedly connected with the mold bottom plate, a fixed plate is fixedly installed on one side of the mold bottom plate, a plurality of electric push cylinders are fixedly installed on the outer wall of the fixed plate, and the piston rods of the plurality of electric push cylinders are fixedly connected with the push plate.

[0018] Preferably, the two said fixed frame one side outer wall is fixedly installed with mounting plate, the mounting plate inner wall is provided with mounting groove, two said mounting groove inner wall is respectively connected with two adjusting screw rod rotation, two said mounting plate one side outer wall is respectively connected with two servo motor fixedly, the servo motor and adjacent adjusting screw rod is connected through output shaft.

[0019] Preferably, the said drive component includes fixed rack and slide rail, the fixed rack is fixedly installed to the one side outer wall of the movable plate, the slide rail is fixedly installed to the other side outer wall of the movable plate, the movable rack one side is rotatably installed with movable gear, the movable gear is engaged with the fixed rack.

[0020] Preferably, the said movable rack one side bottom is fixedly installed with drive motor, the drive motor and movable gear are connected through output shaft, the other side of the movable rack is slidably connected with the outer wall of the slide rail.

[0021] In the above technical scheme, the technical effects and advantages provided by the present application are as follows:

[0022] 1. The combination of the mold base plate, the push plate and the sealing plate can form a mold for preparing a prefabricated staircase. The hydraulic cylinder can drive the movable plate to move, so that the push plate and the sealing plate can be clamped and fixed. The forming mechanism can remain stable during the concrete pouring process. The drive component can drive the scraper to move inside the movable plate, so that the surface of the poured concrete can be leveled. Meanwhile, the electric push cylinder can drive the push plate to move along the mold base plate, so that the formed prefabricated staircase can be quickly demolded. The movement of the push plate can clean the mold base plate, thereby ensuring the quality of the prefabricated staircase and improving the efficiency of the preparation of the prefabricated staircase.

[0023] 2. The servo motor can drive the adjacent adjusting screw rod to rotate, so that the sealing plate can move along the inner walls of the two mounting grooves on the outer side thereof. Thus, the forming mechanism can be conveniently assembled and disassembled. Meanwhile, the drive motor can drive the movable gear to rotate along the fixed rack. The slide rail can limit the movement of the movable rack, so that the scraper can stably level the surface of the poured concrete, and the surface of the poured concrete can remain flat. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0025] Figure 1 The process flowchart of the present application.

[0026] Figure 2 It is a schematic view of the overall structure of the present application.

[0027] Figure 3 It is a left view vertical section view of the present application.

[0028] Figure 4 It is an enlarged view of A part in the present application Figure 2

[0029] Figure 5 It is an exploded view of the fixing mechanism and the forming mechanism of the present application.

[0030] Figure 6 It is an exploded view of the flattening mechanism of the present application.

[0031] Figure 7 It is a mold closing state view of the present application.

[0032] Explanation of reference signs:

[0033] 1, fixing mechanism; 101, fixing bottom plate; 102, fixing frame; 103, controller; 104, movable slot; 105, mounting plate; 106, mounting slot;

[0034] 2, forming mechanism; 201, mold bottom plate; 202, fixing plate; 203, electric push cylinder; 204, push plate; 205, adjusting screw; 206, servo motor; 207, sealing plate;

[0035] 3, flattening mechanism; 301, movable plate; 302, movable seat; 303, hydraulic cylinder; 304, fixed rack; 305, sliding rail; 306, moving frame; 307, scraper; 308, movable gear; 309, driving motor. DETAILED DESCRIPTION

[0036] The present application provides a prefabricated stair preparation process as shown in the following steps: Figure 1

[0037] S1, mold cleaning and release agent spraying, use a broom to remove residual concrete in the mold, high-pressure air pipe cooperates with a fish tail shovel to clean thoroughly, and protective glasses need to be worn during operation. Spray release agent and evenly spread, the amount needs to be moderate to avoid affecting the demolding effect, and the mold surface needs to be wiped smooth after oiling;

[0038] S2, steel bar binding and pre-embedded part installation, bind the stair steel bars according to the drawing requirements, ensure that the binding wire head is curved towards the inside or parallel to the steel bar surface to avoid scratching. Pre-embedded hoisting bolts, anti-skid grooves and other components are checked for the accuracy of the reserved hole position;

[0039] ​​S3, concrete pouring and vibrating, test the slump of concrete before pouring (usually 3 tests), ensure the fluidity meets the requirements. Use high-frequency vibrating machine to compact the concrete, eliminate honeycomb defects, and surface finishing to flatness;

[0040] S4, curing and demolding, remove the form after reaching the lifting strength, the release agent needs to be evenly covered to ensure the surface quality of the component. Control the temperature and humidity during curing to ensure that the concrete strength meets the standard;

[0041] S5, hoisting preparation and finished product protection, use steel wire rope and pre-buried lifting points when hoisting the prefabricated stairs, control the length of the sling to make both ends synchronous landing. Cover the steps with wooden boards after installation to prevent construction pollution or damage.

[0042] In order to quickly prepare the prefabricated stairs, as shown in Figures 2-7 The mold in S1 includes a fixing mechanism 1, a forming mechanism 2 is arranged at the top of the fixing mechanism 1, and a flattening mechanism 3 is arranged at the top of the forming mechanism 2. The forming mechanism 2 includes a mold bottom plate 201, a push plate 204 is arranged on one side of the mold bottom plate 201, and a sealing plate 207 is arranged on the other side of the mold bottom plate 201. Threaded adjusting lead screws 205 are inserted into both ends of the sealing plate 207, and servo motors 206 are arranged on one side of the two adjusting lead screws 205. The flattening mechanism 3 includes a movable plate 301 arranged on the top of the mold bottom plate 201, movable seats 302 are fixedly installed on both ends of the movable plate 301, and hydraulic cylinders 303 are arranged on the top of the two movable seats 302. A driving component is arranged on the outer side of the movable plate 301, an output end of the driving component is provided with a moving frame 306, and a scraper 307 is fixedly installed on the bottom of the moving frame 306. The servo motor 206 drives the adjusting lead screw 205 to rotate, so that the sealing plate 207 moves to one side of the mold bottom plate 201. The combination of the mold bottom plate 201, the push plate 204 and the sealing plate 207 can form a mold plate of the prefabricated stairs. The hydraulic cylinder 303 drives the movable seat 302 to move, so that the height of the movable plate 301 can be adjusted, and the movable plate 301 can be clamped and fixed with the push plate 204 and the sealing plate 207. The driving component drives the moving frame 306 to move, so that the scraper 307 can perform leveling operation on the poured concrete.

[0043] In order to make the movable plate 301 stable during movement, as shown in Figures 2-7As shown, the fixing mechanism 1 comprises a fixing base plate 101, both ends of the fixing base plate 101 are fixedly provided with fixing frames 102, one end of one of the fixing frames 102 is fixedly provided with a controller 103, the top of each of the two fixing frames 102 is provided with a movable slot 104, the top of each of the two fixing frames 102 is fixedly connected with a hydraulic cylinder 303, the bottom of the piston rod of each of the two hydraulic cylinders 303 penetrates through the top inner wall of the movable slot 104 and is fixedly connected with the top of an adjacent movable seat 302, the fixing frame 102 can install and fix the hydraulic cylinder 303, the controller 103 drives the two hydraulic cylinders 303 to work, so that the two movable seats 302 move along the inner wall of the two movable slots 104, and then the movable plate 301 remains stable during height adjustment.

[0044] In order to make the forming mechanism 2 quickly splice and expand, as shown in Figure 3 , Figure 5 and Figure 7 , the top of the fixing base plate 101 is fixedly connected with a mold base plate 201, one side of the mold base plate 201 is fixedly provided with a fixed plate 202, a plurality of electric push cylinders 203 are fixedly installed on the outer wall of the fixed plate 202, the piston rod of each of the plurality of electric push cylinders 203 is fixedly connected with a push plate 204, one side of each of the two fixing frames 102 is fixedly provided with a mounting plate 105, a mounting slot 106 is formed in the inner wall of the mounting plate 105, the inner wall of each of the two mounting slots 106 is rotatably connected with an adjusting screw 205, one side of each of the two mounting plates 105 is fixedly connected with a servo motor 206, the servo motor 206 is connected with the adjacent adjusting screw 205 through an output shaft, the controller 103 drives the electric push cylinder 203 to drive the push plate 204 to move, so that the formed prefabricated staircase can be pushed out from the inner side of the forming mechanism 2, the mounting slot 106 in the inner wall of the mounting plate 105 can install and fix the adjusting screw 205, the controller 103 controls the two servo motors 206 to drive the adjacent adjusting screw 205 to rotate, so that the sealing plate 207 can move along the inner wall of the two mounting slots 106 on the outer side, and then the mold plate can be quickly spliced and expanded.

[0045] In order to make the scraper 307 can stably perform the leveling operation on the surface of the poured concrete, as shown in Figures 3-7As shown, the driving component comprises a fixed rack 304 fixedly installed on one side of the outer wall of the movable plate 301 and a sliding rail 305 fixedly installed on the other side of the outer wall of the movable plate 301. One side of a moving frame 306 is rotatably installed with a movable gear 308 which is engaged with the fixed rack 304. The bottom of one side of the moving frame 306 is fixedly installed with a driving motor 309 which is connected with the movable gear 308 through an output shaft. The other side of the moving frame 306 is slidingly connected with the outer wall of the sliding rail 305. The controller 103 drives the driving motor 309 to drive the movable gear 308 to rotate. Through the meshing action between the movable gear 308 and the fixed rack 304, the movable gear 308 moves outside the fixed rack 304, thereby driving the moving frame 306 to move. At the same time, the sliding rail 305 can limit the movement of the moving frame 306, so that the moving frame 306 remains stable during movement, thereby enabling the scraper 307 to stably scrape the surface of the poured concrete.

[0046] Specifically, when the prefabricated stair is prepared, the controller 103 drives the two servo motors 206 to drive the adjacent adjusting lead screws 205 to rotate, so that the sealing plate 207 moves outside along the inner wall of the two installation grooves 106, so that the sealing plate 207 can be sleeved to one side of the outer wall of the mold bottom plate 201. Then, the controller 103 drives the two hydraulic cylinders 303 to extend, so that the movable seat 302 moves downward along the inner wall of the adjacent movable groove 104, thereby enabling the movable plate 301 to be sleeved to the top outside of the sealing plate 207 and the push plate 204, so that the stair template is spliced and formed. Then, the concrete is poured in the formed template, so that the concrete can be poured and formed inside the forming mechanism 2. At the same time, the controller 103 drives the driving motor 309 to drive the movable gear 308 to rotate. Through the meshing action between the movable gear 308 and the fixed rack 304, the movable gear 308 moves outside the fixed rack 304, thereby driving the moving frame 306 to move. At the same time, the sliding rail 305 can limit the movement of the moving frame 306, so that the moving frame 306 remains stable during movement, thereby enabling the scraper 307 to stably scrape the surface of the concrete;

[0047] When the prefabricated stair is poured and formed, the controller 103 makes the two hydraulic cylinders 303 retract, so that the movable plate 301 can be separated from the forming mechanism 2, and at the same time the controller 103 makes the two servo motors 206 rotate reversely, so that the adjusting lead screw 205 can drive the sealing plate 207 to move, so that it is separated from the mold bottom plate 201, then the controller 103 controls the multiple electric cylinders 203 to extend, so that the push plate 204 can move along the inner bottom of the mold bottom plate 201, the formed prefabricated stair can be pushed out from the inside of the forming mechanism 2, and at the same time the movement of the push plate 204 can clean the inner bottom of the mold bottom plate 201, so that the prefabricated stair can be quickly formed and demolded, the quality of the prefabricated stair can be ensured, and the preparation efficiency of the prefabricated stair can be improved, and the embodiment specifically solves the problem that the prefabricated stair preparation process is prone to defects, which affects the stair quality and preparation efficiency in the prior art.

[0048] The above has described certain exemplary embodiments of the present application by way of illustration only, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature, and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. A prefabricated staircase manufacturing process, characterized in that, Includes the following steps: S1. Mold cleaning and release agent spraying: Use a broom to remove residual concrete from the mold, use a high-pressure air duct and a fishtail shovel to clean thoroughly, spray the release agent and apply it evenly, and wipe the mold surface smooth with a mop after applying the oil. S2. Reinforcing bar binding and embedded part installation: Bind the stair reinforcing bars according to the drawings, ensuring that the binding wire ends are bent inward or parallel to the reinforcing bar surface. Embed the hoisting bolts and anti-slip grooves, and check the accuracy of the reserved hole positions. S3. Concrete pouring and vibration: Test the slump of concrete before pouring to ensure that the fluidity meets the requirements, and use high-frequency vibration to compact the concrete. S4. Curing and demolding: After the concrete reaches the lifting strength, the formwork is removed. The release agent must be evenly applied to ensure the surface quality of the component. During the curing period, the temperature and humidity are controlled to ensure that the concrete strength meets the standards. S5. Lifting preparation and finished product protection: When lifting prefabricated stairs, steel wire ropes and pre-embedded lifting points are used to control the length of the slings so that both ends are lowered synchronously. After installation, wooden boards are used to cover the steps to protect them.

2. The prefabricated staircase manufacturing process according to claim 1, characterized in that: The mold described in S1 includes a fixing mechanism (1), a forming mechanism (2) is provided on the top of the fixing mechanism (1), and a leveling mechanism (3) is provided on the top of the forming mechanism (2); The forming mechanism (2) includes a mold base plate (201), a push plate (204) is provided on one side of the mold base plate (201), a sealing plate (207) is provided on the other side of the mold base plate (201), and an adjusting screw (205) is threaded into both ends of the sealing plate (207). A servo motor (206) is provided on one side of each of the two adjusting screws (205). The leveling mechanism (3) includes a movable plate (301), which is located on the top of the mold base plate (201). Movable seats (302) are fixedly installed at both ends of the movable plate (301). Hydraulic cylinders (303) are installed on the top of the two movable seats (302). A driving component is provided on the outside of the movable plate (301). A movable frame (306) is provided at the output end of the driving component. A scraper (307) is fixedly installed at the bottom of the movable frame (306).

3. The prefabricated staircase manufacturing process according to claim 2, characterized in that: The fixing mechanism (1) includes a fixed base plate (101), and a fixing frame (102) is fixedly installed on the outer walls of both ends of the fixed base plate (101). A controller (103) is fixedly installed on the outer wall of one end of one of the fixing frames (102), and an movable groove (104) is opened on the top of both fixing frames (102).

4. The prefabricated staircase manufacturing process according to claim 3, characterized in that: The tops of the two fixed brackets (102) are respectively fixedly connected to the tops of the two hydraulic cylinders (303), and the bottoms of the piston rods of the two hydraulic cylinders (303) penetrate the inner wall of the top of the movable groove (104) and are fixedly connected to the tops of the adjacent movable seats (302).

5. The prefabricated staircase manufacturing process according to claim 3, characterized in that: The top of the fixed base plate (101) is fixedly connected to the mold base plate (201). A fixed plate (202) is fixedly installed on one side of the mold base plate (201). Multiple electric push cylinders (203) are fixedly installed on the outer wall of the fixed plate (202). The piston rods of the multiple electric push cylinders (203) are fixedly connected to the push plate (204).

6. The prefabricated staircase manufacturing process according to claim 3, characterized in that: Mounting plates (105) are fixedly installed on one side of the outer wall of each of the two mounting brackets (102). The inner wall of the mounting plate (105) is provided with mounting grooves (106). The inner walls of the two mounting grooves (106) are respectively rotatably connected to two adjusting screws (205). The outer walls of the two mounting plates (105) are respectively fixedly connected to two servo motors (206). The servo motors (206) are connected to the adjacent adjusting screws (205) through an output shaft.

7. The prefabricated staircase manufacturing process according to claim 2, characterized in that: The driving component includes a fixed rack (304) and a slide rail (305). The fixed rack (304) is fixedly installed on one side of the outer wall of the movable plate (301), and the slide rail (305) is fixedly installed on the other side of the outer wall of the movable plate (301). A movable gear (308) is rotatably installed on one side of the movable frame (306), and the movable gear (308) meshes with the fixed rack (304).

8. The prefabricated staircase manufacturing process according to claim 7, characterized in that: A drive motor (309) is fixedly installed on one side of the bottom of the movable frame (306). The drive motor (309) is connected to the movable gear (308) through an output shaft. The other side of the movable frame (306) is slidably connected to the outer wall of the slide rail (305).

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