Prefabricated stair splicing and positioning device
Patent Information
- Application Number
- CN202521880593.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-02
AI Technical Summary
[0003]基于上述，本发明人发现存在以下问题：现在的装配式楼梯在拼接安装过程中，预留孔洞与预埋钢筋件难以定位对准，需要人工不断校准，人工校准依赖经验判断，如通过“孔洞四周缝隙看似均匀”判定对准，实则可能存在轴线偏移，但肉眼难以察觉，后续灌注混凝土时，易因孔洞与钢筋贴合不均出现灌浆死角，导致节点粘结强度不足，长期使用可能引发楼梯踏步异响、接缝渗漏等问题
[0008]采用上述进一步方案的有益效果是，安装套采用钕铁硼磁铁材质，使得安装套可通过磁吸作用快速固定于凸起钢筋的外部，无需螺栓等额外紧固件，简化安装操作，适配施工现场快速定位需求；四个连接条形成稳定支撑结构，将隔磁板固定于安装套上方，避免隔磁板因外力晃动导致红外线接收器偏移；隔磁板的设置，可阻断安装套的磁场对红外线接收器的潜在干扰，保障红外线信号接收的稳定性。
Smart Images
Figure CN224717370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated staircase technology, specifically a prefabricated staircase splicing and positioning device. Background Technology
[0002] Prefabricated stairs are a new type of stair installation method. They use prefabricated stair treads, handrails, and columns, and the entire staircase is installed through a simple assembly process. In the installation of existing prefabricated stairs for buildings, hoisting machines and steel wire ropes are used to lift the prefabricated stairs to the corresponding positions, align the reserved holes and embedded steel reinforcement connectors on the prefabricated stairs, and then pour concrete to complete the splicing and installation.
[0003] Based on the above, the inventors have discovered the following problems: In the current assembly and installation process of prefabricated stairs, it is difficult to position and align the reserved holes and embedded steel bars. It requires constant manual calibration, which relies on experience. For example, alignment may be judged by the "uniformity of the gaps around the holes". However, there may be axial offset, which is difficult to detect with the naked eye. When pouring concrete later, uneven contact between the holes and steel bars can easily lead to grouting dead corners, resulting in insufficient joint bonding strength. Long-term use may cause problems such as abnormal noise of stair treads and leakage at joints.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a prefabricated staircase splicing and positioning device in order to achieve a more practical purpose. Utility Model Content
[0005] The purpose of this utility model is to provide a prefabricated staircase splicing and positioning device to solve the problems mentioned in the background art.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows: A prefabricated staircase splicing and positioning device includes a first mounting component, a second mounting component, an infrared receiver, and an infrared transmitter. The first mounting component includes a mounting sleeve disposed outside a protruding reinforcing bar of an embedded part. The mounting sleeve has a cavity inside, and the top surface of the cavity is fitted to the end of the protruding reinforcing bar away from the embedded part. A magnetic shielding plate is disposed above the mounting sleeve. The second mounting component includes a hollow cylinder disposed inside the injection port of the prefabricated staircase. The infrared receiver is mounted on the magnetic shielding plate. The infrared transmitter is mounted at the bottom end of the hollow cylinder. The infrared receiver receives infrared rays emitted by the infrared transmitter.
[0007] Furthermore, the mounting sleeve is made of neodymium iron boron magnet material, and the mounting sleeve is magnetically connected to the protruding steel bar. Four connecting strips are welded circumferentially to the outer wall of the mounting sleeve, and the inner walls of the four connecting strips are fixedly connected to the outer wall of the magnetic shielding plate.
[0008] The advantages of adopting the above-mentioned further solution are that the mounting sleeve is made of neodymium iron boron magnet material, which allows the mounting sleeve to be quickly fixed to the outside of the protruding steel bar through magnetic attraction, without the need for bolts or other additional fasteners, simplifying the installation operation and adapting to the rapid positioning needs on the construction site; the four connecting strips form a stable support structure, fixing the magnetic shielding plate above the mounting sleeve, preventing the infrared receiver from shifting due to external force shaking of the magnetic shielding plate; the setting of the magnetic shielding plate can block the potential interference of the magnetic field of the mounting sleeve to the infrared receiver, ensuring the stability of infrared signal reception.
[0009] Furthermore, the outer wall of the hollow cylinder is provided with four through slots along the circumference, and each of the four through slots is provided with a locking plate. The inner top and bottom surfaces of the locking plates are respectively pressed against and fitted with the top and bottom surfaces of the prefabricated staircase near the injection port, and the inner sidewall of the locking plates is fitted with the inner wall of the injection port.
[0010] The beneficial effect of adopting the above-mentioned further solution is that after the locking plate slides out through the through groove, the inner top and bottom surfaces of the locking plate press against and fit against the top and bottom surfaces of the prefabricated staircase near the injection port, respectively, so that the hollow cylinder cannot be removed from the injection port whether it is pulled up or pulled down, thus realizing the rapid fixation of the hollow cylinder to the injection port and preventing the hollow cylinder from falling off due to shaking during the hoisting of the staircase; the four locking plates are evenly distributed along the circumference, and the force is balanced.
[0011] Furthermore, a wedge-shaped block is installed on one side of the outer wall of each of the four locking plates, a sliding groove is provided on each of the four wedge-shaped blocks, a sliding strip is slidably connected inside each of the four sliding grooves, a lifting block is installed between the four sliding strips, and the four wedge-shaped blocks are inclined on the side near the lifting block, and the outer wall of the lifting block is adapted to the inclined side of the wedge-shaped block.
[0012] The beneficial effect of adopting the above-mentioned further solution is that the inclined surface adaptation structure of the wedge block and the lifting block can convert the vertical movement of the lifting block into the horizontal extension and retraction movement of the locking plate, and realize the synchronous action of the four locking plates through a single drive source; the cooperation of the slide groove and the slide bar limits the movement direction of the wedge block, ensuring that the locking plate only extends and retracts in the horizontal direction under the vertical movement of the lifting block, avoiding the separation of the wedge block and the lifting block, which would cause the locking plate to fail to extend and retract.
[0013] Furthermore, a threaded hole is provided at the center of the lifting block, and a screw is threaded into the threaded hole. The lifting block has sliding holes on both sides of the threaded hole, and a sliding rod is slidably connected inside each pair of sliding holes. The two ends of the sliding rod are fixedly connected to the inner wall of the hollow cylinder, and the two ends of the screw are rotatably connected to the inner wall of the hollow cylinder.
[0014] The beneficial effects of adopting the above-mentioned further solution are that the sliding fit between the sliding rods on both sides and the sliding holes provides guidance for the lifting block. When the screw rotates, it prevents the lifting block from rotating synchronously with the screw, ensuring that the lifting block only moves along the axial direction and improving the transmission stability. The screw drive has a self-locking function. After the drive stops, the position of the lifting block remains unchanged, which can prevent the locking plate from loosening due to external force and ensure the reliability of the hollow cylinder fixing.
[0015] Furthermore, a miniature servo motor is installed at the end of the hollow cylinder away from the infrared emitter. The output end of the miniature servo motor passes through the hollow cylinder and is fixedly connected to one end of the screw.
[0016] The beneficial effect of adopting the above-mentioned further solution is that by setting a micro servo motor, it is easy to drive the screw to rotate when it is working, thus providing power for the screw to rotate.
[0017] Furthermore, the diameter of the hollow cylinder is the same as the diameter of the filling port, and the outer wall of the hollow cylinder is in contact with the inner wall of the filling port.
[0018] The beneficial effect of adopting the above-mentioned further solution is that the hollow cylinder and the filling port have the same diameter and fit tightly, which makes it easy to insert the second mounting part into the filling port, while ensuring the coaxiality between the hollow cylinder and the filling port.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: In this prefabricated staircase splicing and positioning device, the mounting sleeve wraps around the free end of the protruding reinforcing bar of the embedded part through a cavity. The mounting sleeve is made of magnetic material and can magnetically attract the protruding reinforcing bar, thereby fixing the mounting sleeve to the protruding reinforcing bar and ensuring that the axis of the protruding reinforcing bar is coaxial with the center of the mounting sleeve, establishing a unified benchmark for subsequent positioning. The magnetic shielding plate blocks the magnetic field propagation path of the mounting sleeve, placing the infrared receiver in a low-magnetic-interference environment. The infrared receiver is integrated into the magnetic shielding plate and physically isolated from the mounting sleeve, avoiding interference from the metal-conducted magnetic field. The hollow cylinder is located inside the prefabricated staircase's injection port, providing infrared... The infrared transmitter is integrated into the bottom of the hollow cylinder. Utilizing the linear propagation characteristics of infrared light, when the infrared transmitter and receiver are stably aligned, it indicates that the center of the protruding steel bar and the grouting port are aligned. Infrared light has better penetrating power than visible light, making it suitable for complex construction environments such as high-altitude operations and strong light exposure, ensuring stable positioning. Operators only need to attach the installation sleeve to the protruding steel bar and insert the hollow cylinder into the grouting port. During the hoisting process, the position is continuously adjusted so that the infrared receiver can receive the direct infrared light from the infrared transmitter. After receiving the light, the infrared receiver responds, and the hoisting equipment causes the prefabricated staircase to descend vertically. Attached Figure Description
[0020] Figure 1 A three-dimensional structural diagram of a prefabricated staircase splicing and positioning device provided by this utility model; Figure 2An exploded cross-sectional three-dimensional structural diagram of the first mounting component of a prefabricated stair splicing and positioning device provided by this utility model; Figure 3 An exploded three-dimensional structural diagram of the second mounting component of a prefabricated stair splicing and positioning device provided by this utility model; Figure 4 A three-dimensional structural diagram of the lifting block of a prefabricated stair splicing and positioning device provided by this utility model; Figure 5 A three-dimensional structural diagram of the hollow cylinder of a prefabricated staircase splicing and positioning device provided by this utility model.
[0021] In the diagram: 1. First mounting component; 11. Mounting sleeve; 12. Chamber; 13. Connecting strip; 14. Magnetic shielding plate; 2. Second mounting component; 21. Hollow cylinder; 22. Through groove; 23. Clamping plate; 24. Wedge block; 25. Slide groove; 26. Slide bar; 27. Lifting block; 28. Threaded hole; 29. Screw; 210. Slide hole; 211. Slide rod; 212. Miniature servo motor; 3. Infrared receiver; 4. Infrared transmitter. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-5 This utility model provides a technical solution: a prefabricated staircase splicing and positioning device, including a first mounting component 1, a second mounting component 2, an infrared receiver 3, and an infrared transmitter 4. The first mounting component 1 includes a mounting sleeve 11 disposed outside the protruding steel bar of the embedded part. The mounting sleeve 11 has a cavity 12 inside, and the top surface of the cavity 12 is attached to the end of the protruding steel bar away from the embedded part. A magnetic shielding plate 14 is disposed above the mounting sleeve 11. The second mounting component 2 includes a hollow cylinder 21 disposed inside the injection port of the prefabricated staircase. The infrared receiver 3 is mounted on the magnetic shielding plate 14. The infrared transmitter 4 is mounted at the bottom end of the hollow cylinder 21. The infrared receiver 3 receives the infrared rays emitted by the infrared transmitter 4. The operator only needs to fit the mounting sleeve 11 onto the protruding steel bar and insert the hollow cylinder 21 into the injection port. During the lifting process of the hoisting equipment, the position is continuously adjusted so that the infrared receiver 3 can receive the direct infrared rays emitted by the infrared transmitter 4. After receiving the infrared rays, the infrared receiver 3 responds, and the hoisting equipment causes the prefabricated staircase to descend vertically.
[0024] Please see Figures 1-5 This utility model provides a technical solution: the mounting sleeve 11 is made of neodymium iron boron magnet material, the mounting sleeve 11 is magnetically connected to the protruding steel bar, and four connecting strips 13 are welded circumferentially on the outer wall of the mounting sleeve 11. The inner walls of the four connecting strips 13 are all fixedly connected to the outer wall of the magnetic shielding plate 14. The mounting sleeve 11 is made of neodymium iron boron magnet material, so that the mounting sleeve 11 can be quickly fixed to the outside of the protruding steel bar by magnetic attraction, without the need for bolts or other additional fasteners, simplifying the installation operation and adapting to the rapid positioning needs of the construction site.
[0025] Please see Figures 1-5 This utility model provides a technical solution: Four through slots 22 are circumferentially formed on the outer wall of the hollow cylinder 21. Each of the four through slots 22 has a sliding engagement plate 23 inside. The top and bottom surfaces of the engagement plate 23 are respectively pressed against the top and bottom surfaces of the prefabricated staircase near the injection port. The inner sidewall of the engagement plate 23 is in contact with the inner wall of the injection port. A wedge block 24 is installed on one side of the outer wall of each of the four engagement plates 23. Each of the four wedge blocks 24 has a sliding groove 25. Each of the four sliding grooves 25 has a sliding strip 26 slidably connected inside. A lifting block 2 is installed between the four sliding strips 26. 7. Four wedge-shaped blocks 24 are inclined on the side near the lifting block 27. The outer wall of the lifting block 27 is adapted to the inclined side of the wedge-shaped blocks 24. A threaded hole 28 is opened at the center of the lifting block 27. A screw 29 is threaded into the threaded hole 28. Sliding holes 210 are opened on both sides of the threaded hole 28. A sliding rod 211 is slidably connected inside each pair of sliding holes 210. The two ends of the sliding rod 211 are fixedly connected to the inner wall of the hollow cylinder 21. The two ends of the screw 29 are rotatably connected to the inner wall of the hollow cylinder 21. The hollow cylinder 21 is far from the inner wall of the lifting block 27. A miniature servo motor 212 is installed at one end of the infrared emitter 4. The output end of the miniature servo motor 212 passes through the hollow cylinder 21, and is fixedly connected to one end of the screw 29. The diameter of the hollow cylinder 21 is the same as the diameter of the filling port, and the outer wall of the hollow cylinder 21 fits against the inner wall of the filling port. When the servo motor is started, the screw 29 is driven to rotate. The sliding engagement between the sliding rods 211 on both sides and the sliding hole 210 provides guidance for the lifting block 27. When the screw 29 rotates, it prevents the lifting block 27 from rotating synchronously with the screw 29, ensuring that the lifting block 27 only rotates along the path of the screw 29. The axial downward movement, under the inclined adaptation structure of the wedge block 24 and the lifting block 27, can convert the vertical movement of the lifting block 27 into the horizontal extension and retraction movement of the locking plate 23, so that the locking plate 23 extends out of the through groove 22. After the locking plate 23 slides out through the through groove 22, the inner top and bottom surfaces of the locking plate 23 press against and fit against the top and bottom surfaces of the prefabricated staircase near the injection port, so that the hollow cylinder 21 cannot be taken out from the injection port whether it is pulled up or pulled down, thus realizing the rapid fixation of the hollow cylinder 21 to the injection port and preventing the hollow cylinder 21 from falling off due to shaking during the hoisting of the staircase.
[0026] Specifically, the working principle of this prefabricated staircase splicing and positioning device is as follows: During use, the operator only needs to attach the installation sleeve 11 to the protruding reinforcing bar. The installation sleeve 11 is made of neodymium iron boron magnet material, allowing it to be quickly fixed to the outside of the protruding reinforcing bar through magnetic attraction. The hollow cylinder 21 is placed into the injection port, and the servo motor is started, driving the screw 29 to rotate. The sliding cooperation between the sliding rods 211 on both sides and the sliding holes 210 provides guidance for the lifting block 27. When the screw 29 rotates, it prevents the lifting block 27 from rotating synchronously with the screw 29, ensuring that the lifting block 27 only moves downwards along the axial direction. With the wedge block 24 and the inclined surface adaptation structure of the lifting block 27, the vertical movement of the lifting block 27 can be achieved. The motion is transformed into the horizontal extension and retraction of the locking plate 23, causing the locking plate 23 to extend out of the through groove 22. After the locking plate 23 slides out through the through groove 22, the top and bottom surfaces of the locking plate 23 press against and adhere to the top and bottom surfaces of the prefabricated staircase near the injection port, respectively. This prevents the hollow cylinder 21 from being pulled up or down from being removed from the injection port, thus achieving rapid fixation of the hollow cylinder 21 to the injection port and preventing the hollow cylinder 21 from falling off due to shaking during the hoisting of the staircase. During the hoisting process, the position is continuously adjusted so that the infrared receiver 3 can receive the direct infrared rays from the infrared transmitter 4. After receiving the infrared rays, the infrared receiver 3 responds, and the hoisting equipment causes the prefabricated staircase to descend vertically.
[0027] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. Furthermore, since this application is mainly used to protect mechanical devices, the control methods and circuit connections will not be explained in detail in this application.
Claims
1. A prefabricated staircase splicing and positioning device, characterized in that, The system includes a first mounting component (1), a second mounting component (2), an infrared receiver (3), and an infrared transmitter (4). The first mounting component (1) includes a mounting sleeve (11) disposed outside the protruding steel bar of the pre-embedded part. The mounting sleeve (11) has a cavity (12) inside. The top surface of the cavity (12) is attached to the end of the protruding steel bar away from the pre-embedded part. A magnetic shielding plate (14) is disposed above the mounting sleeve (11). The second mounting component (2) includes a hollow cylinder (21) disposed inside the grouting port of the prefabricated staircase. The infrared receiver (3) is mounted on the magnetic shielding plate (14). The infrared transmitter (4) is mounted at the bottom end of the hollow cylinder (21). The infrared receiver (3) receives the infrared rays emitted by the infrared transmitter (4).
2. The prefabricated staircase splicing and positioning device according to claim 1, characterized in that, The mounting sleeve (11) is made of neodymium iron boron magnet. The mounting sleeve (11) is magnetically connected to the protruding steel bar. Four connecting strips (13) are welded to the outer wall of the mounting sleeve (11) along the circumferential direction. The inner walls of the four connecting strips (13) are fixedly connected to the outer wall of the magnetic shielding plate (14).
3. The prefabricated staircase splicing and positioning device according to claim 1, characterized in that, The outer wall of the hollow cylinder (21) is provided with four through slots (22) along the circumference. Each of the four through slots (22) is provided with a locking plate (23). The top and bottom surfaces of the locking plate (23) are pressed against and attached to the top and bottom surfaces of the prefabricated staircase near the injection port, respectively. The inner sidewall of the locking plate (23) is attached to the inner wall of the injection port.
4. The prefabricated staircase splicing and positioning device according to claim 3, characterized in that, Wedge blocks (24) are installed on one side of the outer wall of each of the four locking plates (23). Slide grooves (25) are provided on each of the four wedge blocks (24). Slide strips (26) are slidably connected inside each of the four slide grooves (25). Lifting blocks (27) are installed between the four slide strips (26). The four wedge blocks (24) are inclined on the side near the lifting block (27). The outer wall of the lifting block (27) is adapted to the inclined side of the wedge block (24).
5. The prefabricated staircase splicing and positioning device according to claim 4, characterized in that, The lifting block (27) has a threaded hole (28) at its center. A screw (29) is threaded into the threaded hole (28). The lifting block (27) has sliding holes (210) on both sides of the threaded hole (28). A sliding rod (211) is slidably connected inside each pair of sliding holes (210). The two ends of the sliding rod (211) are fixedly connected to the inner wall of the hollow cylinder (21). The two ends of the screw (29) are rotatably connected to the inner wall of the hollow cylinder (21).
6. The prefabricated staircase splicing and positioning device according to claim 3, characterized in that, The hollow cylinder (21) has a micro servo motor (212) installed at the end away from the infrared emitter (4). The output end of the micro servo motor (212) passes through the hollow cylinder (21), and the output end of the micro servo motor (212) is fixedly connected to one end of the screw (29).
7. A prefabricated staircase splicing and positioning device according to claim 6, characterized in that, The diameter of the hollow cylinder (21) is the same as the diameter of the injection port, and the outer wall of the hollow cylinder (21) is in contact with the inner wall of the injection port.