A multi-degree-of-freedom prefabricated staircase operating platform and its prefabrication method

Abstract

This invention proposes a multi-degree-of-freedom prefabricated staircase operating platform and a prefabrication method, including a horizontal base, an inclined bracket rotatably connected to the end of the horizontal base, a support frame rotatably connected to the lower surface of the inclined bracket, and the end of the support frame pressing against the horizontal base and slidably connected to the horizontal base; a first platform rotatably connected to the upper part of the inclined bracket, and a first driving mechanism provided at the lower part of the first platform, the first driving mechanism controlling the first platform to rotate around its connection point with the inclined bracket. The multi-degree-of-freedom prefabricated staircase operating platform includes the following steps: S1: determining the angle of the staircase segment; S2: controlling the length of the staircase segment; S3: adjusting the relative angle between the fixed platform plate and the staircase segment. This platform can flexibly adjust the design parameters of the prefabricated staircase and quickly assemble the plate according to the parameters adjusted by the platform, resulting in high assembly and disassembly efficiency and significantly reducing the mold manufacturing cost in the prior art.

Description

Technical Field

[0001] This invention relates to the field of building staircase manufacturing, and more particularly to a multi-degree-of-freedom prefabricated staircase operating platform and prefabrication method. Background Technology

[0002] Currently, staircase construction typically involves prefabricated staircases followed by assembly, often using prefabricated molds for filling, such as... Figure 7 The precast molds shown are quite common at present, and they are in the form of inverted molds and side-mounted molds. The technical difficulty lies in adjusting the size of the steps. There are many variables in the number, height, and width of the steps, making it difficult to control the cost and efficiency of the molds. The angle of the resting platforms on both sides of the stairs can be adjusted, but adjusting the inclination of the stairs, etc., requires the creation of new molds, which consumes high costs. In addition, for inverted molded stairs, the steel reinforcement is located above the steps, making demolding difficult and requiring a large force. During hoisting, there is less concrete above the steel reinforcement, which often causes damage under stress and requires repair, resulting in a low yield rate.

[0003] For example, the precast staircase mold disclosed in patent publication number CN111015910A also works by adjusting the angle of the rest platform before casting. Similar to the above principle, it still has the problem that the tilt angle of the entire staircase is difficult to adjust, and the production cost of the same mold is extremely high. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a multi-degree-of-freedom prefabricated staircase operating platform, comprising:

[0005] Horizontal base

[0006] An inclined bracket is rotatably connected to the end of a horizontal base, and a support frame is rotatably connected to the lower surface of the inclined bracket. The end of the support frame presses against the horizontal base and is slidably connected to the horizontal base.

[0007] The upper part of the inclined support is rotatably connected to a first platform, and the lower part of the first platform is provided with a first drive mechanism. The first drive mechanism controls the first platform to rotate around the connection point between it and the inclined support.

[0008] The inclined bracket is slidably connected to both sides of the drive assembly, and the drive assembly is connected to the support arm by a pivot pin. A second platform is provided between the two support arms, and the edge of the second platform presses against the inclined bracket.

[0009] A fixed arm is provided at the lower part of the drive assembly;

[0010] The end of the support arm is rotatably connected to a second drive mechanism, one end of which is rotatably connected to the fixed arm and pushes the support arm to rotate along the pivot pin.

[0011] Preferably, the inclined bracket includes a support plate, and the support plate has two sets of locking brackets arranged vertically on both sides.

[0012] Preferably, the drive assembly includes a profile component, a third drive mechanism is provided on the profile component, and pressure rollers are respectively provided on the upper and lower parts of the profile component, the pressure rollers being engaged between the upper and lower sets of engagement frames.

[0013] Preferably, a fourth drive mechanism is provided at the bottom of the support frame, and two sets of rollers are rotatably connected to the bottom of the support frame. The rollers press against the horizontal base, and a reinforcing plate is connected between the rollers. The pushing end of the fourth drive mechanism is connected to the reinforcing plate.

[0014] Preferably, the first drive mechanism, the second drive mechanism, the third drive mechanism, and the fourth drive mechanism are worm gear screw jacks.

[0015] Preferably, the lower part of the inclined bracket is provided with an extension arm, and the first drive mechanism is mounted on the extension arm.

[0016] A method for forming a multi-degree-of-freedom prefabricated staircase, using the aforementioned multi-degree-of-freedom prefabricated staircase operating platform, includes the following steps:

[0017] S1: Determine the angle of the stair flight: Adjust the tilt angle of the tilting bracket by extending and retracting the fourth drive mechanism;

[0018] S2: Staircase length control: The second platform is controlled by the drive component to move on the inclined support and adjust to the preset length of the staircase segment.

[0019] S3: Adjust the relative angles between the first and second platforms and the stair section: By extending and retracting the first and second drive mechanisms, adjust the angles between the first and second platforms and the stair section, and finally determine the parameters of the prefabricated staircase.

[0020] S4: Using the angle parameters adjusted in S3, build the resting platform area of ​​the staircase and the outer frame of the stair section, and make the tread molds. The steps of the stair section are placed facing forward, and the steel bars are placed at the bottom of the outer frame.

[0021] S5: Pour concrete into the outer frame and allow it to solidify.

[0022] S6: Forward demolding, displacement and curing.

[0023] Preferably, the outer frame is a wooden or aluminum plate and is fixed and locked in place by screws.

[0024] Preferably, when pouring concrete in S5, concrete is poured at each step position until the concrete of that layer becomes a plane, thus forming a single-layer staircase.

[0025] Preferably, the step mold consists of several plates arranged in parallel on a stair section, with the plates positioned above the reinforcing bars.

[0026] The multi-degree-of-freedom prefabricated staircase operating platform and prefabrication method proposed in this invention have the following beneficial effects: This platform can flexibly adjust the design parameters of the prefabricated staircase, including the length and angle of the stair section and the angle design of the resting platform, and quickly assemble the plate according to the parameters adjusted by the platform. The assembly and disassembly efficiency is high, which greatly reduces the mold making cost in the prior art and efficiently completes the production of most common prefabricated staircases. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0028] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0029] Figure 2 This is a side perspective view of the present invention;

[0030] Figure 3 This is a schematic diagram of the driving component of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the drive component of the present invention;

[0032] Figure 5 This is a schematic diagram of the step mold of the present invention;

[0033] Figure 6 This is a schematic diagram of the rotating connection of the present invention;

[0034] Figure 7 This is a schematic diagram of a prefabricated mold in the prior art;

[0035] The components include: 1. Horizontal base; 2. Inclined bracket; 3. Support frame; 4. First platform; 5. First drive mechanism; 6. Drive assembly; 7. Pressure roller; 8. Second platform; 9. Second drive mechanism; 10. Fixed arm; 11. Support plate; 12. Clamping frame; 13. Profile component; 14. Pressing roller; 15. Third drive mechanism; 16. Extending arm; 17. Triangular lug; 18. Triangular piece; 19. Fourth drive mechanism; 20. Reinforcing plate; 21. Roller; 22. Plate component. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0037] like Figure 1 As shown, this invention proposes a multi-degree-of-freedom prefabricated staircase operating platform, including...

[0038] The horizontal base 1 can be in the form of a frame. The horizontal base 1 has two sets of parallel edge guide rails for cooperating with the rollers involved below.

[0039] An inclined bracket 2 is rotatably connected to the end of a horizontal base 1. The inclined bracket 2 includes a support plate 11, and two sets of locking brackets 12 are provided on both sides of the support plate 11.

[0040] It should be noted that, as Figure 6 As shown, in this embodiment, all "rotational connections" can be made using triangular lugs 17 and connected via pivot pins. The specific details of how to make the rotational connection will not be repeated below. A support frame 3 is rotatably connected to the lower surface of the inclined bracket 2. The support frame 3 is positioned approximately at the center of the inclined bracket 2, but is not limited to being completely in the center. The end of the support frame 3 presses against the edge guide rail of the horizontal base 1 and is slidably connected to the horizontal base 1. A fourth drive mechanism 19 is provided at the bottom of the support frame 3. Two sets of rollers 21 are rotatably connected to the bottom of the support frame 3. The rollers 21 press against the edge guide rail of the horizontal base 1. A reinforcing plate 20 is connected between the rollers 21. The pushing end of the fourth drive mechanism 19 is connected to the reinforcing plate 20. The rollers 21 press against the edge guide rail, and the fourth drive mechanism 19 pushes the rollers. It should be noted that the fourth drive mechanism 19 has the same structure as the first drive mechanism 5, the second drive mechanism 9 and the third drive mechanism 15 described below. It is a worm gear screw jack (the attached diagram is only a simplified schematic diagram). The structure can be seen in the Chenchao brand SWLD20T worm gear jack. The screw of the fourth drive mechanism 19 is set horizontally and is rotatably connected to the reinforcing plate 20. The motor of the fourth drive mechanism 19 drives the extension and retraction, thereby pushing the tilting bracket 2 to lift or lower, so as to adjust the angle of the stair section.

[0041] The rest platforms on both sides of the staircase are rotatably connected to the first platform 4 via the upper part of the inclined support 2. The first platform 4 is provided with a first drive mechanism 5 at its lower part. The first drive mechanism 5 controls the first platform 4 to rotate around its connection point with the inclined support 2. The lower part of the inclined support 2 is provided with an extension arm 16. The first drive mechanism 5 is installed on the extension arm 16, with the extension arm 16 as a fixed point. The lead screw of the first drive mechanism 5 pushes the first platform 4 to adjust the angle between the first platform 4 and the inclined support 2.

[0042] To adjust the length of the stair flight, the second platform 8 is adjusted. The second platform 8 is installed as follows: a drive assembly 6 is slidably connected to both sides of the inclined bracket 2. Support arms are connected to the drive assembly 6 via pivot pins. The drive assembly 6 includes a profile 13, on which a third drive mechanism 15 is mounted. Pressure rollers 14 are positioned above and below the profile 13, respectively, and are engaged between the upper and lower sets of locking frames 12. A second platform 8 is positioned between the support arms on both sides, with its edge pressing against the inclined bracket 2. A fixed arm 10 is located at the lower part of the drive assembly 6. The lead screw of the third drive mechanism 15 extends along the length of the inclined bracket 2. When the third drive mechanism 15 extends or retracts, both ends of the lead screw are fixed, and the drive slide on the lead screw transmits power along the direction of the lead screw. The third drive mechanisms 15 on both sides are synchronized, i.e., driving the second platform 8 connected to it to move along the direction of the lead screw. The movement causes the profile 13 to slide on the clamping brackets 12 on both sides of the inclined bracket 2 via the clamping roller 14. At the same time, the angle between the second platform 8 and the inclined bracket 2 is also adjustable. A second drive mechanism 9 is rotatably connected to the end of the support arm. One end of the second drive mechanism 9 is rotatably connected to the fixed arm 10 and pushes the support arm to rotate along the pivot pin. The lead screw of the second drive mechanism 9 is rotatably connected to the fixed arm 10. The support arm and the profile are rotatably connected via a triangular piece 18. The lead screw of the second drive mechanism 9 is connected to the fixed arm 10. When driven, the slider of the second drive mechanism 9 moves on the lead screw. The support arm is rotatably connected to the slider of the second drive mechanism 9. When the slider of the second drive mechanism 9 moves, it drives the support arm to rotate around the position of the triangular piece 18 connected to the profile, thereby driving the second platform 8 to rotate along the position of the support arm connected to the drive assembly 6, thereby driving the second platform 8 to rotate, so as to realize the angle adjustment of the second platform 8.

[0043] In this embodiment, a multi-degree-of-freedom prefabricated staircase forming method is implemented using the aforementioned platform. The method includes the following steps:

[0044] S1: Determine the angle of the stair flight: Adjust the tilt angle of the tilting bracket 2 by extending and retracting the fourth drive mechanism 19;

[0045] S2: Staircase length control: The second platform 8 is controlled by the drive component to move on the inclined support 2 and adjust to the preset length of the staircase segment.

[0046] S3: Adjust the relative angle between the first platform 4 and the second platform 8 and the stair section: By extending and retracting the first drive mechanism 5 and the second drive mechanism 9, adjust the angle between the first platform 4 and the second platform 8 and the stair section, and finally determine the parameters of the prefabricated staircase.

[0047] S4: Using the angle parameters adjusted in S3, construct the resting platform area and the outer frame of the staircase, and make the step molds. The steps of the staircase are placed facing forward, and steel bars are placed at the bottom of the outer frame. It should be noted that the step molds can be made of wood, aluminum, or other low-cost and easy-to-assemble plates 22. Assemble them along the pre-set length and angle of the staircase on the operating platform to form a C-shaped frame at the two platform positions. Of course, the width and length of the platform are prepared according to the actual design requirements. The outer frame of the staircase on the inclined support 2 is aligned with the C-shaped frame through the plate to form a rectangular structure and locked with screws. Then, steel bars are placed at the bottom of the formed overall frame as the internal strength support of the staircase. Since the rectangular structure is on the inclined support 2, wood boards are arranged in sequence along the inclined support 2 inside the rectangular structure. The bottom of the wood boards can be pressed on the steel bars or left with a certain distance. Wooden blocks can be locked on the wood boards to strengthen the strength of the wood boards.

[0048] S5: Pour concrete into the outer frame and let it solidify. The concrete can be poured as a whole or poured in stages. When pouring, the concrete fills the position of the bottom steel reinforcement and fills the space between adjacent wooden boards one by one. Due to the weight of the concrete itself, a plane is formed between the wooden boards, forming a step.

[0049] S6: Forward demolding, relocation and curing. After all pouring is completed, manual plastering can be done, and after solidification, forward demolding can be performed for further curing. During forward demolding, the reinforcing steel is at the bottom of the formed concrete. When demolding upward, the tension applied is supported by the stair section, which prevents damage to the stair section. Compared with backward demolding, the thickness of the reinforced concrete covering the back of the staircase is thinner, which solves the problem of more damage to the staircase when demolded backward.

Claims

1. A multi-degree-of-freedom prefabricated staircase operating platform, characterized in that, include Horizontal base An inclined bracket is rotatably connected to the end of a horizontal base, and a support frame is rotatably connected to the lower surface of the inclined bracket. The end of the support frame presses against the horizontal base and is slidably connected to the horizontal base. The upper part of the inclined support is rotatably connected to a first platform, and the lower part of the first platform is provided with a first drive mechanism. The first drive mechanism controls the first platform to rotate around the connection point between it and the inclined support. The inclined bracket is slidably connected to both sides of the drive assembly, and the drive assembly is connected to the support arm by a pivot pin. A second platform is provided between the two support arms, and the edge of the second platform presses against the inclined bracket. A fixed arm is provided at the lower part of the drive assembly; The end of the support arm is rotatably connected to a second drive mechanism, one end of which is rotatably connected to the fixed arm and pushes the support arm to rotate along the pivot pin.

2. The multi-degree-of-freedom prefabricated staircase operating platform according to claim 1, characterized in that, The inclined support includes a support plate, and two sets of locking brackets are provided on both sides of the support plate.

3. The multi-degree-of-freedom prefabricated staircase operating platform according to claim 2, characterized in that, The drive assembly includes a profile component, on which a third drive mechanism is provided. The profile component is provided with pressing wheels at its upper and lower ends, and the pressing wheels are engaged between the upper and lower sets of engagement frames.

4. The multi-degree-of-freedom prefabricated staircase operating platform according to claim 3, characterized in that, The bottom of the support frame is provided with a fourth drive mechanism. Two sets of rollers are rotatably connected to the bottom of the support frame. The rollers press against the horizontal base. A reinforcing plate is connected between the rollers. The pushing end of the fourth drive mechanism is connected to the reinforcing plate.

5. The multi-degree-of-freedom prefabricated staircase operating platform according to claim 4, characterized in that, The first drive mechanism, the second drive mechanism, the third drive mechanism, and the fourth drive mechanism are worm gear screw jacks.

6. The multi-degree-of-freedom prefabricated staircase operating platform according to claim 1, characterized in that, The lower part of the inclined support is provided with an extension arm, and the first drive mechanism is mounted on the extension arm.

7. A method for forming a multi-degree-of-freedom prefabricated staircase, characterized in that, The multi-degree-of-freedom prefabricated staircase operating platform disclosed in any one of claims 1-6 includes the following steps: S1: Determine the angle of the stair flight: Adjust the tilt angle of the tilting bracket by extending and retracting the fourth drive mechanism; S2: Staircase length control: The second platform is controlled by the drive component to move on the inclined support and adjust to the preset length of the staircase segment. S3: Adjust the relative angles between the first and second platforms and the stair section: By extending and retracting the first and second drive mechanisms, adjust the angles between the first and second platforms and the stair section, and finally determine the parameters of the prefabricated staircase. S4: Using the angle parameters adjusted in S3, build the resting platform area of ​​the staircase and the outer frame of the stair section, and make the tread molds. The steps of the stair section are placed facing forward, and the steel bars are placed at the bottom of the outer frame. S5: Pour concrete into the outer frame and allow it to solidify. S6: Forward demolding, displacement and curing.

8. The method for forming a multi-degree-of-freedom prefabricated staircase according to claim 7, characterized in that, The outer frame is made of wood or aluminum and is fixed and locked in place by screws.

9. The method for forming a multi-degree-of-freedom prefabricated staircase according to claim 7, characterized in that, When pouring concrete in S5, pour it into each step position until the concrete of that layer is flat, thus forming a single-layer staircase.

10. The method for forming a multi-degree-of-freedom prefabricated staircase according to claim 7, characterized in that, The step mold consists of several plates arranged in parallel on a stair section, with the plates positioned above the reinforcing bars.

Images