Anti-skid hoisting method for small-space prefabricated part

Abstract

The invention relates to the field of prefabricated part hoisting, and discloses a small-space prefabricated part anti-skid hoisting method which comprises the following steps that firstly, a pipeline is pre-buried in a prefabricated part; secondly, the transverse connecting assembly penetrates through the pipeline and is rotationally connected with the pipeline; thirdly, a limiting assembly is connected to the end of the transverse connecting assembly in a threaded mode, and the cable is limited; step 4, hoisting the pre-embedded component in place by hoisting equipment; fifthly, the second limiting assembly is taken down, and the cable and the second limiting assembly are hoisted away from the prefabricated part; sixthly, the transverse connecting assembly is rotated to be separated from the first limiting assembly; 7, the hoisting equipment drives the cable and the first limiting assembly to be taken out from the adjacent side; and 8, the transverse connecting assembly in the pipeline is pulled out. And the anti-skid floor tile is stable and anti-skid, and reliable fixation and quick disassembly can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of prefabricated component hoisting, in particular to a small-space prefabricated component anti-skid hoisting method. BACKGROUND

[0002] In the construction of reinforced concrete prefabricated components, the traditional hoisting process has obvious limitations. The hoisting position of vertical prefabricated components is usually set at the top of the component, and in order to prevent cracking, connecting pieces are pre-buried in the prefabricated component and reinforcing steel is configured, which not only increases the complexity of processes such as formwork opening and precise positioning, but also leads to waste of steel and cost increase, and requires higher structural calculation ability of construction personnel.

[0003] During prefabrication and transportation, it is usually lying down. In order to rotate the component from a stable state to a vertical state, an additional lifting point or other auxiliary tooling is required. After hoisting is completed, the exposed lifting ring needs to be cut off, and the appearance of the component in the lifting ring area may be damaged, so the damaged area needs to be repaired, which not only increases the complexity of processes such as formwork opening and precise positioning, but also leads to waste of steel and cost increase, and requires higher structural calculation ability of construction personnel.

[0004] For space-limited scenarios, the existing lateral hoisting scheme is difficult to ensure reliable fixation and quick disassembly while being stable and anti-skid due to the limitation of adjacent structures or pit support on both sides of the component, such as too close distance between vertical component and pit side wall.

[0005] Therefore, there is a need for a hoisting method that is both stable and anti-skid, and can ensure reliable fixation and quick disassembly. SUMMARY

[0006] The present application aims to provide a small-space prefabricated component anti-skid hoisting method that is both stable and anti-skid, and can ensure reliable fixation and quick disassembly.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a small-space prefabricated component anti-skid hoisting method, comprising the following steps: Step one, pre-burying a pipeline in the prefabricated component; preparing hoisting equipment and a lifting appliance, the lifting appliance including a transverse connecting assembly and two limiting assemblies; Step two, passing the transverse connecting assembly through the pipeline and rotatingly connecting it with the pipeline; Step three, sleeving the hoisting equipment cable around the two ends of the transverse connecting assembly, and threadedly connecting the limiting assemblies at the end of the transverse connecting assembly and limiting the cable; Step four, hoisting the pre-buried component into place by the hoisting equipment, the two limiting assemblies including a first limiting assembly and a second limiting assembly, the first limiting assembly being located at the adjacent side of the prefabricated component, and the second limiting assembly being located at the free side of the prefabricated component; Step 5: Remove the second limiting component and lift the cable and the second limiting component away from the precast component; Step 6: Rotate the lateral connecting component to separate it from the first limiting component; Step 7: The lifting equipment pulls the cable and the first limiting assembly out from the adjacent side; Step 8: Remove the horizontal connecting components inside the pipe.

[0008] The beneficial effects of this plan are: 1. In the construction of precast components, joints need to be reserved between adjacent precast components to facilitate the pouring of concrete in the joints, thereby connecting adjacent precast components; the side adjacent to the precast component and the installed component is the adjacent side, and the other side is the open side; therefore, it is feasible to set the lifting points on both sides of the precast component. After the lifting is in place, the lifting points are located in the reserved joints; making full use of the space at the joint position is suitable for lifting vertical components in narrow spaces.

[0009] 2. However, the disadvantage of "setting the lifting points on both sides of the precast component" is that the lifting points on adjacent sides are not easy to remove. Based on this problem, in this solution, the transverse connecting component and the first limiting component are threadedly connected to facilitate disassembly; it is both stable and anti-slip, and can ensure reliable fixation and quick disassembly.

[0010] 3. Before lifting, precast components are usually placed horizontally on the ground. As the lifting equipment lifts them, the precast components rotate to a vertical position under the action of gravity to facilitate installation. Therefore, in this solution, the transverse connecting components and the precast components are rotatably connected to avoid hindering the rotation of the precast components.

[0011] 4. Pre-embed the pipes at the processing plant to ensure the forming quality of the pipe sidewalls. The pre-embedded transverse sleeves are located inside the components, avoiding the need for cutting off external lifting rings and repairing the appearance of components in traditional processes.

[0012] Furthermore, the transverse connection assembly includes a transverse link, with transverse lifting rods at both ends of the transverse link. The cross-section of the transverse lifting rods is larger than that of the transverse link, and the transverse lifting rods are used to bear the load during the lifting process of the precast components.

[0013] Furthermore, the transverse hanger and the transverse connecting rod are connected by a pin, which passes through the transverse hanger and is perpendicular to it.

[0014] Furthermore, the precast components are provided with vertical limiting slots on both sides. In step four, during the lifting process, both the first limiting component and the second limiting component are accommodated in the vertical limiting slots. The sidewalls of the vertical limiting slots and the two sides of the limiting components form contact constraints, thereby restricting the rotation of the limiting components.

[0015] Furthermore, the limiting assembly includes a fastening nut and an annular anti-detachment component, the outer side of which has an annular groove for accommodating the cable of the lifting equipment; In step three, the end of the transverse connecting component passes through the anti-detachment component and is threadedly connected to the fastening nut, thereby pressing the anti-detachment component against the side of the precast component, and the cable is looped on the annular groove of the anti-detachment component.

[0016] Furthermore, a limiting plate is provided on each side of the anti-detachment component, and the side wall of the annular groove is composed of two limiting plates. Both limiting plates are provided with pin holes, and a pin passes through the pin holes. The pin and the anti-detachment component work together to clamp the cable of the lifting equipment and limit its movement.

[0017] Furthermore, the upper part of the limiting plate is rectangular, and the lower part of the limiting plate is circular. The pin hole includes a bottom pin hole and two top pin holes. The distance from the two top pin holes to the central axis of the anti-detachment component is greater than the distance from the bottom pin hole to the central axis of the anti-detachment component. The pin in the top pin hole is used to apply a horizontal force to the cable of the lifting equipment.

[0018] Furthermore, the limiting component includes a U-shaped part and a fastening nut, with the opening of the U-shaped part being an anti-slip vertical through groove; In step three, the end of the horizontal connecting component passes through the U-shaped piece and is threadedly connected to the fastening nut, and the anti-slip vertical through groove cooperates with the prefabricated component to hold the cable in place.

[0019] Furthermore, the fastening nut has a protrusion on its side, and the U-shaped part has a groove on the side near the fastening nut. The protrusion is used to insert into the groove, thereby restricting the relative rotation of the fastening nut and the U-shaped part. Step three includes the following steps: 3.1 First, pass the U-shaped part of the first limiting component through one end of the transverse connecting component, and then thread the fastening nut of the first limiting component to the end of the transverse connecting component. 3.2 Tighten the fastening nut, U-shaped piece and prefabricated component in sequence so that the protrusion is inserted into the groove; 3.3 Pass the U-shaped part of the second limiting component through the other end of the transverse connecting component, and then thread the fastening nut of the second limiting component to the end of the transverse connecting component.

[0020] Furthermore, the limiting component includes a connecting part for binding and connecting with the cable, and a magnet is provided on the side of the U-shaped part near the fastening nut for attracting the fastening bolt. In step three, the connecting part of the first limiting component is tied and connected to the cable.

[0021] This solution also has the following effects: 1. This scheme sets the stress point at the pre-embedded pipes within the precast component. The precast component transfers the load to the lifting equipment via a horizontal lifting rod. The precast component bears the compressive force. Precast components are typically concrete structures, and the compressive strength of concrete is usually 10-20 times its tensile strength. Therefore, compared to setting the lifting position at the top of the precast component, where the stress point is also at the top and the precast component is subjected to tensile force, this scheme subjects the precast component to compressive force. The precast component has a stronger load-bearing capacity and is less prone to damage. Furthermore, it eliminates the need for additional reinforcing steel bars, simplifying the construction process and improving construction efficiency.

[0022] 2. The horizontal hanger is the main load-bearing structure. The horizontal connecting rod connects the two horizontal hangers so that during disassembly, one horizontal hanger can be rotated and pulled out directly, which will drive the other horizontal hanger to rotate and be pulled out.

[0023] 3. The horizontal lifting rod and the disc are threaded together. During disassembly, the horizontal lifting rod on the free side drives the horizontal connecting rod and the horizontal lifting rod on the adjacent side to rotate together, thereby separating the horizontal lifting rod on the free side from the disc and thus achieving disassembly.

[0024] 4. The pin passes through the horizontal hanger and is perpendicular to it. The horizontal hanger refers to its central axis, which is also the rotation center of the horizontal hanger and the pin when disassembling it. This allows the pin to transmit the torque during rotation to the maximum extent, avoids eccentric force, and thus improves the reliability of the structure.

[0025] 5. The anti-detachment component has an annular groove to limit the cable and prevent it from coming off, thus ensuring a secure fixation to the lifting cable and guaranteeing construction safety. Before lifting, precast components are usually placed horizontally on the ground. As the lifting equipment lifts them, the precast components rotate to a vertical position under gravity to facilitate installation. In this solution, the cable is fitted onto the annular groove, which can transmit vertical loads without affecting the relative rotation of the cable and the anti-detachment component.

[0026] 6. The protrusion is used to insert into the groove, thereby restricting the relative rotation of the fastening nut and the U-shaped part; the core is to prioritize ensuring that the protrusion of the fastening bolt on the adjacent side can be inserted into the groove so that the fastening nut and the horizontal lifting bar 4 can rotate relative to each other during disassembly.

[0027] 7. This invention utilizes the rotation of the horizontal lifting rod and the pre-embedded sleeve to rotate the component from a stable state to a vertical state, avoiding the need for additional lifting points or other auxiliary tooling in traditional processes. Attached Figure Description

[0028] Figure 1 This is a flowchart of Example 1; Figure 2 This is a three-dimensional view of the prefabricated components and lifting equipment in Example 1; Figure 3 This is a 3D view of the lifting device in Example 1; Figure 4 This is an exploded view of the lifting device structure in Example 1; Figure 5 This is a 3D view of the lifting device in Example 2; Figure 6 This is an exploded view of the lifting device structure in Example 2.

[0029] Figure 7 This is a three-dimensional view of the limiting component in Example 4; Figure 8 This is a three-dimensional view of the fastening nut in Example 4. Detailed Implementation

[0030] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: prefabricated component 1, vertical through groove 11, limiting component 2, anti-detachment component 20, limiting plate 21, top pin hole 22, bottom pin hole 23, U-shaped component 24, anti-slip vertical through groove 25, fastening nut 3, protrusion 31, temporary connection hole 32, horizontal lifting rod 4, second pin hole 41, horizontal connecting rod 5, and first pin hole 51.

[0031] Example A method for anti-slip hoisting of prefabricated components in small spaces, the flowchart is as follows: Figure 1 As shown, it includes the following steps: Step 1, such as Figure 2 As shown, horizontal pipes are pre-embedded in prefabricated component 1; lifting equipment and hoisting tools are prepared. In this embodiment, the lifting equipment is a tower crane or a crane, such as... Figure 3 As shown, the lifting device includes a lateral connecting assembly, and both ends of the lateral connecting assembly are provided with limiting components 2. The limiting components 2 include fastening nuts 3 and annular anti-detachment parts 20, as shown. Figure 4 As shown, a limiting plate 21 is provided on each side of the anti-detachment component 20. The limiting plate 21 protrudes radially relative to the anti-detachment component 20, and the two limiting plates 21 and the outer side of the anti-detachment component 20 enclose to form an annular groove; the cable can be sleeved on the annular groove of the anti-detachment component 20. The upper outer contour of the limiting plate 21 is rectangular, and a top pin hole 22 is opened at each of the two top corners of the limiting plate 21. The lower outer contour of the limiting plate 21 is circular, and a bottom pin hole 23 is opened at the middle of the lower end of the limiting plate 21. Pins are inserted into both the top pin hole 22 and the bottom pin hole 23, thereby constraining the cable between the pin and the anti-detachment component 20. The pin and the anti-detachment component 20 cooperate to clamp the cable of the lifting equipment and limit its movement. The distance from the central axis of the two top pin holes 22 to the anti-detachment component 20 is greater than the distance from the central axis of the bottom pin hole 23 to the anti-detachment component 20. The pin in the top pin hole 22 is used to apply a horizontal force to the cable of the lifting equipment.

[0032] likeFigure 4 As shown, the transverse connecting assembly includes a transverse connecting rod 5, two pins, and two transverse lifting rods 4. Each end of the transverse connecting rod 5 has a first pin hole 51. Figure 4 The horizontal lifting rod 4 shown has a second pin hole 41 at one end, and the other end passes through the fastening nut 3 and is threaded into the threaded hole on the fastening nut 3, as shown. Figure 3 , Figure 4 As shown, the pin (not shown in the figure) passes through the first pin hole 51 and the second pin hole 41 in sequence, thereby connecting the transverse lifting rod 4 and the transverse connecting rod 5. The central axes of the transverse connecting rod 5 and the transverse lifting rod 4 are collinear and perpendicular to the pin. The cross-section of the transverse lifting rod 4 is larger than that of the transverse connecting rod 5. The transverse lifting rod 4 is used to bear the load during the lifting process of the precast component 1. The anti-detachment part 202 and the fastening nut 3 can be directly welded or temporarily connected by wire so that the anti-detachment part 202 and the fastening nut 3 can be lifted upward by the cable during disassembly.

[0033] Step 2: Pass the horizontal connecting component through the pipe and rotate it to connect with the pipe; Step 3: The end of the transverse connecting component passes through the anti-detachment part 20 and is threadedly connected to the fastening nut 3, thereby making the anti-detachment part 20 and the side of the prefabricated component 1 abut together. The cable of the lifting equipment is put on the annular groove of the anti-detachment part 20, and the pins are passed through the pin holes to fix the cable. Step 4: The lifting equipment hoists the embedded components into place. The two limiting components 2 include the first limiting component 2 and the second limiting component 2. During the hoisting process, the first limiting component 2 and the second limiting component 2 are both accommodated in the vertical through groove 11. The first limiting component 2 is located on the adjacent side of the precast component 1, and the second limiting component 2 is located on the free side of the precast component 1. Step 5: Rotate the fastening nut 3 on the free side to separate the fastening nut 3, the anti-loosening part 20, and the horizontal lifting bar 4 on the free side; Step 6: Rotate the horizontal lifting bar 4 on the free side, which will drive the horizontal connecting rod 5 and the horizontal lifting bar 4 on the adjacent side to rotate, so that the horizontal lifting bar 4 on the adjacent side and the fastening nut of the first limiting component 2 will rotate relative to each other and separate. Step 7: After the lifting equipment drives the cable and the first limiting component 2 upwards and moves away from the adjacent side of the precast component 1, the first limiting component 2 on the cable is removed. Step 8: Remove the horizontal connecting components inside the pipe.

[0034] Example 2 The difference between Example 2 and Example 1 lies in the different limiting component 2: such as Figure 5 , Figure 6As shown, the limiting component 2 includes a U-shaped part 24 and a fastening nut 3. The opening of the U-shaped part 24 faces towards the side closer to the prefabricated component 1. The opening of the U-shaped part 24 has an anti-slip vertical groove 25, which is used to engage with the prefabricated component 1 to hold the cable in place. Both sides of the U-shaped part 24 are flat. The U-shaped part 24 is accommodated within the limiting vertical groove 11. The sidewall of the limiting vertical groove 11 and both sides of the U-shaped part 24 form a contact constraint, thereby restricting the rotation of the U-shaped part 24. The side of the U-shaped part 24 near the fastening nut 3 is made of magnetic material. In this embodiment, the magnetic material is a magnet, which is used to attract the fastening bolt.

[0035] In step three, the end of the horizontal connecting component passes through the U-shaped piece 24 and is threadedly connected to the fastening nut 3, and the anti-slip vertical through groove 25 cooperates with the prefabricated component 1 to hold the cable in place.

[0036] Example 3 Example 3 is based on Example 2: The limiting component 2 includes a connecting part with a temporary connecting hole 32 for the steel wire to pass through and be tied to the cable. A magnet is provided on the side of the U-shaped part 24 near the fastening nut 3; the magnet is used to attract the fastening bolt. In step three, the connecting part of the first limiting component 2 is tied and connected to the cable.

[0037] Example 4 Example 4 is based on Example 3: such as Figure 7 , Figure 8 As shown, the connecting part is also a protrusion 31. The protrusion 31 is provided on the side of the fastening nut 3. The U-shaped part 24 has a groove on the side near the fastening nut 3. The protrusion 31 is used to insert into the groove, thereby restricting the relative rotation of the fastening nut 3 and the U-shaped part 24. Step three includes the following steps: 3.1 First, pass the U-shaped part 24 of the first limiting component 2 through one end of the transverse connecting component, and then thread the fastening nut 3 of the first limiting component 2 to the end of the transverse connecting component. 3.2 Tighten the fastening nut 3, U-shaped piece 24 and prefabricated component 1 in sequence so that the protrusion 31 is inserted into the groove; 3.3 Pass the U-shaped part 24 of the second limiting component 2 through the other end of the transverse connecting component, and then thread the fastening nut 3 of the second limiting component 2 to the end of the transverse connecting component.

[0038] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A method for anti-slip hoisting of prefabricated components in small spaces, characterized in that... This includes the following steps: Step 1: Embed pipes within precast components; prepare lifting equipment and lifting tools, including lateral connection components and two limiting components; Step 2: Pass the horizontal connecting component through the pipe and rotate it to connect with the pipe; Step 3: Loop the lifting equipment cable around both ends of the transverse connection assembly, and thread the limiting assembly to the end of the transverse connection assembly to limit the cable; Step 4: The lifting equipment hoists the embedded component into place. The two limiting components include a first limiting component and a second limiting component. The first limiting component is located on the adjacent side of the precast component, and the second limiting component is located on the free side of the precast component. Step 5: Remove the second limiting component and lift the cable and the second limiting component away from the precast component; Step 6: Rotate the lateral connecting component to separate it from the first limiting component; Step 7: The lifting equipment pulls the cable and the first limiting assembly out from the adjacent side; Step 8: Remove the horizontal connecting components inside the pipe.

2. The method for anti-slip hoisting of prefabricated components in small spaces according to claim 1, characterized in that: The transverse connection assembly includes a transverse link, with transverse lifting rods at both ends of the transverse link. The cross-section of the transverse lifting rods is larger than that of the transverse link, and the transverse lifting rods are used to bear the load during the lifting process of the precast components.

3. The method for anti-slip hoisting of prefabricated components in small spaces according to claim 2, characterized in that: The horizontal hanger and the horizontal connecting rod are connected by a pin, which passes through the horizontal hanger and is perpendicular to it.

4. The method for anti-slip hoisting of prefabricated components in small spaces according to claim 3, characterized in that: The precast component has vertical limiting slots on both sides. In step four, during the lifting process, both the first limiting component and the second limiting component are accommodated in the vertical limiting slots. The sidewalls of the vertical limiting slots and the two sides of the limiting components form contact constraints, thereby restricting the rotation of the limiting components.

5. The method for anti-slip hoisting of prefabricated components in small spaces according to claim 1, characterized in that: The limiting assembly includes a fastening nut and an annular anti-detachment component. The anti-detachment component has an annular groove on its outer side, which is used to accommodate the cable of the lifting equipment. In step three, the end of the transverse connecting component passes through the anti-detachment component and is threadedly connected to the fastening nut, thereby pressing the anti-detachment component against the side of the precast component, and the cable is looped on the annular groove of the anti-detachment component.

6. The method for anti-slip hoisting of prefabricated components in small spaces according to claim 4, characterized in that: Each side of the anti-detachment component has a limiting plate. The side wall of the annular groove is composed of two limiting plates. Both limiting plates have pin holes with pins inserted into them. The pins and the anti-detachment component work together to clamp the cable of the lifting equipment and limit its movement.

7. The method for anti-slip hoisting of prefabricated components in small spaces according to claim 6, characterized in that: The upper part of the limiting plate is rectangular, and the lower part of the limiting plate is circular. The pin hole includes a bottom pin hole and two top pin holes. The distance from the two top pin holes to the center axis of the anti-detachment component is greater than the distance from the bottom pin hole to the center axis of the anti-detachment component. The pin in the top pin hole is used to apply a horizontal force to the cable of the lifting equipment.

8. The method for anti-slip hoisting of prefabricated components in small spaces according to claim 1, characterized in that: The limiting component includes a U-shaped part and a fastening nut, and the opening of the U-shaped part is a non-slip vertical through groove; In step three, the end of the horizontal connecting component passes through the U-shaped piece and is threadedly connected to the fastening nut, and the anti-slip vertical through groove cooperates with the prefabricated component to hold the cable in place.

9. A method for anti-slip hoisting of prefabricated components in small spaces according to claim 8, characterized in that: The fastening nut has a protrusion on its side, and the U-shaped part has a groove on the side near the fastening nut. The protrusion is used to insert into the groove, thereby restricting the relative rotation of the fastening nut and the U-shaped part. Step three includes the following steps: 3.1 First, pass the U-shaped part of the first limiting component through one end of the transverse connecting component, and then thread the fastening nut of the first limiting component to the end of the transverse connecting component. 3.2 Tighten the fastening nut, U-shaped piece and prefabricated component in sequence so that the protrusion is inserted into the groove; 3.3 Pass the U-shaped part of the second limiting component through the other end of the transverse connecting component, and then thread the fastening nut of the second limiting component to the end of the transverse connecting component.

10. A method for anti-slip hoisting of prefabricated components in small spaces according to claim 8, characterized in that: The limiting component includes a connecting part for binding and connecting with the cable, and a magnet is provided on the side of the U-shaped part near the fastening nut for attracting the fastening bolt. In step three, the connecting part of the first limiting component is tied and connected to the cable.

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