A pre-buried screw rod mounting device

Abstract

The application relates to the field of mechanical installation, in particular to a pre-buried screw rod installation device. The device comprises a screw rod, a plate body, fasteners and a positioning fixing piece. The plate body is provided with a through hole for the screw rod to pass through. The fasteners are used for fixing the screw rod and the plate body, and the screw rod and the positioning fixing piece. The positioning fixing piece can adopt an angle steel, one of the right-angle edges of which is fixed with the screw rod, and the other right-angle edge is connected with an external formwork. The plate body can be composed of at least two sub-plates which are stacked in parallel along the axial direction of the screw rod. The diameter of the through hole is 2mm-4mm larger than the diameter of the screw rod. At least one fastener is arranged at the connection position between the plate body and the positioning fixing piece and the screw rod. The device further comprises a protective sleeve which is sleeved on the exposed section of the screw rod. The device can realize accurate pre-buried positioning of the screw rod, stable installation and effective protection of the exposed section of the screw rod.

Description

Technical Field

[0001] This application relates to the field of mechanical installation, and in particular to a pre-embedded screw rod installation device. Background Technology

[0002] The field of embedded parts for building curtain walls is developing rapidly, with threaded rod type embedded parts becoming the most common method. These parts use steel plates and nuts to fix the threaded rods for positioning. As building heights continue to increase and curtain wall scales expand, higher demands are placed on the installation accuracy and stability of embedded parts. Precise installation of embedded parts is crucial for ensuring the connection strength of curtain wall panels and the safety of the building structure. However, traditional technologies are gradually revealing their shortcomings in meeting these new requirements.

[0003] Traditional techniques for solving the installation problem of embedded parts mainly rely on single-layer steel plates for positioning. Specifically, this involves fixing the threaded rod with nuts on both sides of the steel plate to achieve the positioning purpose. As installation accuracy issues have become more prominent, the industry has made some attempts, such as increasing the thickness of the steel plate in the hope of better limiting the position of the threaded rod by enhancing its strength; and improving the formwork support to try to reduce the impact on the threaded rod from the external support structure. However, these methods only alleviate the problem to a certain extent in practical applications.

[0004] Existing technologies have significant drawbacks. Traditional threaded rod-type embedded parts are prone to displacement during the embedding process, leading to substantial installation errors. The pressure and friction from concrete formwork, as well as vibration and impact during the main structure pouring process, can all cause the threaded rod to shift position. This not only deviates the installation location from the design value but also results in a weak connection between the embedded part and the curtain wall panel, creating safety hazards. Furthermore, it fails to fundamentally solve the problem of three-dimensional displacement of the threaded rod. Utility Model Content

[0005] The purpose of this application is to provide a pre-embedded screw rod installation device.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a pre-embedded screw rod installation device, including a screw rod, a plate, fasteners, and positioning fasteners; the plate has a through hole for the screw rod to pass through, and the fasteners are used to fix the screw rod to the plate; the positioning fasteners are disposed at the end of the screw rod away from the plate, and the fasteners are also used to fix the screw rod to the positioning fasteners.

[0007] By adopting the above technical solution, the pre-embedded screw rod installation device forms a double fixation at both ends of the screw rod with the help of the plate and positioning fasteners. This effectively limits the displacement of the screw rod caused by factors such as concrete formwork compression and pouring vibration during the pre-embedding process, significantly reducing installation errors and ensuring the consistency between the installation position of the pre-embedded parts and the design values. At the same time, the synergistic effect of the plate and positioning fasteners enhances the connection stability between the screw rod and the surrounding structure, avoiding the problem of weak connection of curtain wall panels caused by screw rod displacement. This improves the overall structural safety of the building curtain wall, reduces rework and maintenance costs caused by installation errors, and meets the high requirements for pre-embedding accuracy and stability of large curtain wall projects such as high-rise buildings and commercial complexes.

[0008] Optionally, the positioning fastener is an angle steel, one right-angled side of which is fixed to the lead rod by the fastener, and the other right-angled side is used to connect to the external template.

[0009] By adopting the above technical solution, the positioning and fixing component is set as angle steel. Its two mutually perpendicular right-angled sides are used to connect the threaded rod and the external template respectively. It can not only achieve a stable fixation to the threaded rod through fasteners, but also provide reliable support and positioning for the threaded rod through the connection with the external template. This further restricts the radial and axial displacement of the threaded rod during the concrete pouring process, enhances the constraint effect on the embedded end of the threaded rod, and makes the threaded rod less susceptible to displacement due to external forces such as vibration and compression during the pre-embedding process. This further improves the accuracy and stability of the pre-embedding installation. At the same time, the angle steel structure is simple, the material is readily available, and it is easy to install on site, which can better adapt to the needs of the actual construction environment.

[0010] Optionally, the plate body is composed of at least two sub-plates stacked parallel to each other along the axis of the lead screw, and the through hole penetrates all the sub-plates and is coaxially arranged.

[0011] By adopting the above technical solution, the plate is configured to be composed of at least two sub-plates stacked parallel to each other along the axis of the screw rod, with through holes penetrating all sub-plates and maintaining coaxiality. The stacking of sub-plates can enhance the overall strength and rigidity of the plate. Compared with traditional single-layer steel plates, it can more effectively resist the impact of external forces generated during concrete pouring, reduce the screw rod positioning deviation caused by the plate's own deformation under stress, and at the same time, the stacked structure of multiple sub-plates allows for flexible adjustment of the number of sub-plates according to the actual project's requirements for plate thickness, adapting to the load-bearing requirements of different scenarios. The coaxial through holes ensure the smoothness and perpendicularity of the screw rod when passing through the plate, further improving the accuracy of screw rod installation and ensuring the stability of the connection between the screw rod and the plate.

[0012] Optionally, the sub-plate is a steel plate.

[0013] By adopting the above technical solution, the sub-plate is made of steel plate. The high strength and rigidity of the steel plate itself further enhance the overall structural strength of the stacked plate, making it less prone to deformation under the pressure and vibration of concrete pouring. This provides more stable control of the lead screw, preventing displacement due to plate deformation. Simultaneously, the steel plate material has excellent wear resistance and corrosion resistance, maintaining long-term stable performance in the construction environment, extending the service life of the device. Furthermore, the steel plate is easy to process and form, facilitating the production of sub-plates that meet actual size requirements, ensuring the processing accuracy of the through holes, and guaranteeing the smoothness and positioning accuracy of the lead screw when it passes through, thereby improving the installation reliability of the entire embedded device.

[0014] Optionally, the diameter of the through hole is 2mm to 4mm larger than the diameter of the lead screw.

[0015] By adopting the above technical solution, the diameter of the through hole is set to be 2mm~4mm larger than the diameter of the lead screw. This provides sufficient operating space for the lead screw to pass through the through hole, effectively eliminating the influence of the thickness of the zinc coating on the lead screw surface, processing errors, and alignment deviations during on-site installation. This ensures that the lead screw can smoothly pass through the plate and quickly complete positioning. It also avoids unnecessary shaking of the lead screw in the through hole due to excessive gaps. While ensuring convenient installation, the fasteners also help maintain the verticality and stability of the lead screw after installation, further reducing positional deviations caused by improper installation operations and improving the accuracy and efficiency of pre-embedded installation.

[0016] Optionally, the fastener includes a nut adapted to the lead screw, and at least one fastener is provided at the connection points between the lead screw and both sides of the plate and both sides of the positioning and fixing member.

[0017] By adopting the above technical solution, using nuts compatible with the lead screw as fasteners, and placing at least one nut on each side of the plate and at the connection point between the positioning fastener and the lead screw, a stable clamping force can be formed through the threaded engagement of the nut and the lead screw, firmly locking the plate and the positioning fastener onto the lead screw. This effectively prevents loosening or displacement of both due to external forces during construction. At the same time, the nuts on both sides of the plate can work together to restrict the movement of the plate along the axial direction of the lead screw, while the nuts at the positioning fasteners can strengthen the connection strength with the lead screw, ensuring the constraint effect of the positioning fasteners on the end of the lead screw. This multi-point fixing method further improves the structural stability of the entire device, reduces lead screw offset caused by loose connections, thereby ensuring the accuracy of pre-embedded installation. Moreover, nuts are common fasteners, readily available, and easy to install, which helps to improve construction efficiency.

[0018] Optionally, a protective sleeve is also included, which is fitted onto the exposed section of the lead screw located on the side of the plate away from the positioning and fixing member.

[0019] By adopting the above technical solution, a protective sleeve is installed on the exposed section of the screw rod located on the side of the plate away from the positioning and fixing components. This effectively protects the screw rod from damage and corrosion caused by collisions, friction, or concrete splashes during construction, ensuring the structural integrity and surface quality of the exposed part of the screw rod, so as to facilitate smooth connection with curtain wall panels and other components. At the same time, the protective sleeve can also reduce the adhesion of external impurities to the surface of the screw rod, reduce the problem of loose fastener connections caused by impurities, ensure the smoothness of subsequent installation, and thus indirectly ensure the stability and reliability of the entire embedded system and extend the service life of the device.

[0020] Optionally, the protective sleeve is a plastic tube.

[0021] By adopting the above technical solution and using a plastic tube as the protective sleeve, the corrosion resistance and insulation properties of plastic can be utilized to effectively isolate the exposed section of the screw rod from direct contact with the external humid environment, concrete slurry, etc., preventing the screw rod from rusting or surface contamination and ensuring its subsequent connection performance. Moreover, the plastic tube is lightweight, easy to cut and install, and can be flexibly adjusted according to the length of the exposed section of the screw rod to adapt to different construction scenarios. At the same time, plastic is low in cost and widely available, which can reduce the overall cost of the device while ensuring the protective effect. In addition, the plastic tube has a certain degree of elasticity, which can buffer the screw rod when subjected to slight collisions, reduce the direct impact of external forces on the screw rod, and further maintain the structural integrity of the screw rod.

[0022] In summary, this application has at least the following beneficial effect: 1. This pre-embedded threaded rod installation device forms a double fixation at both ends of the threaded rod through the plate and positioning fasteners. This effectively limits the displacement of the threaded rod caused by factors such as concrete formwork compression and pouring vibration during the pre-embedding process, significantly reducing installation errors and ensuring the consistency of the pre-embedded part installation position with the design value. At the same time, the synergistic effect of the plate and positioning fasteners enhances the connection stability between the threaded rod and the surrounding structure, avoiding the problem of weak connection of curtain wall panels caused by threaded rod displacement. This improves the overall structural safety of the building curtain wall, reduces rework and maintenance costs caused by installation errors, and meets the high requirements for pre-embedded accuracy and stability of large curtain wall projects such as high-rise buildings and commercial complexes.

[0023] 2. By configuring the plate body as a structure composed of at least two sub-plates stacked parallel to each other along the axis of the screw, with through holes penetrating all sub-plates and maintaining coaxiality, the overall strength and rigidity of the plate body can be enhanced through the stacking of sub-plates. Compared with traditional single-layer steel plates, it can more effectively resist the impact of external forces generated during concrete pouring, reduce the screw positioning deviation caused by the deformation of the plate body itself under stress, and at the same time, the stacked structure of multiple sub-plates allows for flexible adjustment of the number of sub-plates according to the actual engineering requirements for plate thickness, adapting to the load-bearing requirements of different scenarios. The coaxial through holes ensure the smoothness and perpendicularity of the screw when passing through the plate body, further improving the accuracy of screw installation and ensuring the stability of the connection between the screw and the plate body.

[0024] 3. Setting the diameter of the through hole to be 2mm~4mm larger than the diameter of the lead screw provides sufficient operating space for the lead screw to pass through the through hole, effectively eliminating the influence of the thickness of the galvanized layer on the lead screw surface, processing errors, and alignment deviations during on-site installation. This ensures that the lead screw can smoothly pass through the plate and quickly complete positioning. It also avoids unnecessary shaking of the lead screw in the through hole due to excessive gaps. While ensuring convenient installation, the fasteners, together with the fixing effect, can maintain the verticality and stability of the lead screw after installation, further reducing positional deviations caused by improper installation operations and improving the accuracy and efficiency of pre-embedded installation. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of a pre-embedded screw installation device; Figure 2 This is a schematic diagram of the plate structure.

[0026] Figure Labels 1. Lead screw; 2. Plate; 3. Fastener; 4. Positioning and fixing parts; 5. Through hole; 6. Protective sleeve. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] In this embodiment, refer to Figures 1-2 An embedded lead screw installation device includes a lead screw 1, a plate 2, a fastener 3, and a positioning and fixing component 4. The plate 2 has a through hole 5 for the lead screw 1 to pass through. The fastener 3 fixes the lead screw 1 to the plate 2. The positioning and fixing component 4 is located at the end of the lead screw 1 away from the plate 2. The fastener 3 also fixes the lead screw 1 to the positioning and fixing component 4, achieving precise positioning of the lead screw 1 and reducing displacement and installation errors of the lead screw 1 during the pre-embedding process. This is because the plate 2 and the positioning and fixing component 4 limit the lead screw 1 from different parts, effectively resisting the influence of external factors on the position of the lead screw 1.

[0029] Specifically, the threaded rod 1 is the main component of the entire device, embedded in the concrete to connect the curtain wall panels to the building structure. The threaded rod 1 is typically made of high-strength metal materials, such as high-strength alloy steel, and is elongated with threads on its surface to mate with fasteners 3 such as nuts. The threaded rod 1 can also be made of stainless steel to improve its corrosion resistance.

[0030] Plate 2 is composed of at least two sub-plates stacked parallel to each other along the axial direction of the lead rod 1. Through holes 5 penetrate all sub-plates and are coaxially arranged. The sub-plates are made of steel plates, which have high strength and rigidity, effectively limiting the lead rod 1 during concrete pouring. The sub-plates can be ordinary carbon steel plates or specially treated high-strength steel plates. The sub-plates are generally square or round in shape, with a thickness of approximately 3mm. The total thickness of plate 2 formed by stacking multiple sub-plates can be adjusted according to actual needs. In actual installation, the sub-plates are first stacked sequentially until the through holes 5 are aligned, and then the lead rod 1 is passed through the through holes 5.

[0031] Fasteners 3 include nuts adapted to the lead screw 1. At least one fastener 3 is provided at the connection points between the lead screw 1 and both sides of the plate 2 and both sides of the positioning fastener 4. The nuts are typically standard nuts that match the threads of the lead screw 1, and are generally made of carbon steel or stainless steel. The nuts, through thread engagement with the lead screw 1, securely connect the lead screw 1 to the plate 2 and the positioning fastener 4. The nuts on both sides of the plate 2 prevent the lead screw 1 from moving axially; similarly, the nuts on both sides of the positioning fastener 4 enhance the connection stability between the lead screw 1 and the positioning fastener 4. Besides nuts, other types of fasteners 3, such as bolts, can also be used.

[0032] The positioning fastener 4 is an angle steel. One right-angled side of the angle steel is fixed to the threaded rod 1 by fastener 3, and the other right-angled side is used to connect to the external formwork. The angle steel is generally made of equilateral angle steel and carbon steel, which has good strength and rigidity. The size of the angle steel can be selected according to actual needs. By fixing one right-angled side of the angle steel to the threaded rod 1 and connecting the other right-angled side to the external formwork, the threaded rod 1 can be limited at its base to prevent displacement during concrete pouring. When installing the angle steel, first align one right-angled side of the angle steel with the threaded rod 1, then fix it with fasteners 3 such as nuts, and then fix the other right-angled side to the external formwork with bolts or other connecting parts.

[0033] The diameter of the through hole 5 is 2mm to 4mm larger than the diameter of the lead screw 1, preferably 3mm larger. This design eliminates errors caused by the thickness of the galvanized layer and on-site installation, ensuring that the lead screw 1 can smoothly and accurately pass through the through hole 5 and be fixed. During the manufacturing of the plate 2, the diameter of the through hole 5 needs to be precisely controlled to ensure its fit with the lead screw 1.

[0034] The device also includes a protective sleeve 6, which is fitted onto the exposed section of the lead screw 1 on the side of the plate 2 furthest from the positioning and fixing element 4. The protective sleeve 6 is made of plastic, which has good flexibility and corrosion resistance, protecting the exposed part of the lead screw 1 from external environmental influences, such as rust and impacts. The inner diameter of the plastic sleeve should be slightly larger than the outer diameter of the lead screw 1 to ensure it can be smoothly fitted onto the lead screw 1. When installing the protective sleeve 6, it is inserted from one end of the lead screw 1 until it reaches the position on the plate 2.

[0035] The implementation principle of this embodiment is as follows: The pre-embedded threaded rod 1 installation device of this embodiment, through the coordinated action of the plate 2, the positioning and fixing component 4, and the fastener 3, provides all-round positioning of the threaded rod 1. The plate 2 limits the exposed part of the threaded rod 1, and the positioning and fixing component 4 limits the foot of the threaded rod 1, effectively solving the displacement problem of the threaded rod 1 during the concrete pouring process and improving the installation accuracy and stability of the pre-embedded component. The optimized through hole 5 design eliminates installation errors, and the protective sleeve 6 protects the exposed part of the threaded rod 1. Compared with traditional technology, this device fundamentally solves the three-dimensional displacement problem of the threaded rod 1, reduces rework and maintenance costs caused by errors, improves the overall image and safety of the building, and provides new ideas and directions for the technological advancement of curtain wall pre-embedded systems.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-embedded screw rod installation device, characterized in that, It includes a lead screw (1), a plate (2), a fastener (3), and a positioning fastener (4); the plate (2) has a through hole (5) for the lead screw (1) to pass through, and the fastener (3) is used to fix the lead screw (1) to the plate (2); the positioning fastener (4) is located at the end of the lead screw (1) away from the plate (2), and the fastener (3) is also used to fix the lead screw (1) to the positioning fastener (4).

2. The pre-embedded screw installation device according to claim 1, characterized in that, The positioning fastener (4) is an angle steel. One right-angled side of the angle steel is fixed to the lead screw (1) by the fastener (3), and the other right-angled side is used to connect with the external template.

3. The pre-embedded screw installation device according to claim 1, characterized in that, The plate (2) is composed of at least two sub-plates stacked parallel to each other along the axial direction of the lead screw (1), and the through hole (5) passes through all the sub-plates and is coaxially arranged.

4. The pre-embedded screw installation device according to claim 3, characterized in that, The sub-plate is a steel plate.

5. The pre-embedded screw installation device according to claim 1, characterized in that, The diameter of the through hole (5) is 2mm to 4mm larger than the diameter of the lead screw (1).

6. The pre-embedded screw installation device according to claim 1, characterized in that, The fastener (3) includes a nut adapted to the lead screw (1), and at least one fastener (3) is provided at the connection points between the plate (2) and the lead screw (1) on both sides of the plate (2) and both sides of the positioning and fixing member (4).

7. The pre-embedded screw installation device according to claim 1, characterized in that, It also includes a protective sleeve (6), which is sleeved on the exposed section of the lead screw (1) on the side of the plate (2) away from the positioning and fixing member (4).

8. The pre-embedded screw installation device according to claim 7, characterized in that, The protective sleeve (6) is a plastic tube.

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