Beam side formwork clamping device and using method thereof

Abstract

The invention relates to a beam side formwork clamping device, and belongs to the technical field of building construction equipment. The device comprises a clamping main body, a fixing part and a connecting piece, the clamping main body is arranged on the fixing part and comprises two clamping pieces which are oppositely arranged, and the relative distance between the two clamping pieces is adjustable; the connecting piece comprises a first connecting piece and a second connecting piece which are respectively arranged at the upper part and the lower part of the clamping main body and are adjustable in relative distance. When the device is used, the clamping main body and the fixing part are adjusted according to the size of a beam side formwork, the device is fixed to a construction beam through the connecting piece, concrete is poured, and the stability of the formwork is monitored. The structure is simple, operation is convenient, and the stability and construction quality of the beam side formwork can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of construction equipment, and in particular to a clamping device for beam side formwork and a method for using the same. Background Art

[0002] With the continuous development of construction engineering technology, the stability and accuracy of formwork in concrete structure construction have become increasingly important for its impact on project quality. As an important component of concrete beam construction, the stability of beam side formwork is directly related to the quality of concrete beam molding and construction safety.

[0003] Currently, in the construction process of concrete beams, commonly used beam side formwork fixing methods mainly include clamping, supporting, and combined types. Among them, the clamping fixing method is widely used due to its ease of operation and strong adaptability.

[0004] However, there are still some technical problems with the beam side formwork clamping device in the prior art: first, the existing clamping device has deficiencies in the control of clamping force, and is difficult to accurately adjust according to different formwork materials and sizes, which can easily lead to excessive clamping force causing formwork deformation or insufficient clamping force causing formwork loosening; second, the fixing method of the existing clamping device is not stable enough. During the concrete pouring process, especially the vibration generated during vibration, it is easy to cause the clamping device to move, affecting the concrete molding quality; finally, the existing clamping device generally lacks an effective safety locking mechanism. Once the clamping force weakens or accidentally loosens, it may cause the formwork to fall off, posing a major safety hazard.

[0005] These technical issues not only affect the construction quality of concrete beams, but also increase safety risks and labor costs during the construction process. Therefore, there is an urgent need for a beam side formwork stabilization clamping device that can accurately control the clamping force, provide stable and reliable fixation, and have a safety locking function to improve the quality and efficiency of concrete beam construction. Summary of the Invention

[0006] The present application relates to a beam side formwork stabilization clamping device and a method of using the same, aiming to provide a clamping device with a stable structure, flexible adjustment, and convenient installation, so as to ensure the stability of the beam side formwork during concrete pouring and improve construction efficiency and quality.

[0007] The beam side formwork clamping device provided in the present application includes a clamping body, a fixing part and a connecting piece. The clamping body is arranged on the fixing part and includes two clamping pieces arranged opposite to each other and with an adjustable relative distance; the connecting piece includes a first connecting piece and a second connecting piece respectively arranged at the upper and lower parts of the clamping body and with an adjustable relative distance.

[0008] In one embodiment, openings are provided at both ends of the fixing portion, and a groove is provided at the lower portion of the clamping member that matches the openings of the fixing portion, so that the clamping member slides in the openings of the fixing portion.

[0009] In one embodiment, the upper portion and the lower portion of the clamping member are respectively provided with a first through hole and a second through hole, and the fixing portion is provided with a third through hole opposite to the second through hole.

[0010] In one embodiment, the first connecting member is connected to the upper portion of the clamping member through the first through hole and can slide in the first through hole, and the second connecting member is connected to the fixing portion and the lower portion of the clamping member through the second through hole and the third through hole.

[0011] In one embodiment, the connecting member includes a connecting shaft and a fastener.

[0012] In one embodiment, the connecting shaft includes a screw rod, and the fastener includes a nut and a steel washer.

[0013] In one embodiment, the clamping body and the fixing portion are both made of high-strength steel.

[0014] In one embodiment, anti-skid pads or anti-skid textures are provided on opposite surfaces of the clamping member.

[0015] The present application also provides a method for using the above-mentioned beam side formwork clamping device, comprising the following steps:

[0016] Fix the fixing part according to the construction beam;

[0017] Adjust the position and clamping force of the clamping body according to the size and shape of the beam side formwork;

[0018] Fixing the fixing portion and the clamping body by a connecting piece;

[0019] pouring concrete;

[0020] After pouring is completed, remove the clamping device.

[0021] In one embodiment, the method further includes cleaning and maintaining the clamping device after the pouring is completed and the clamping device is removed.

[0022] This application has the following advantages or beneficial effects:

[0023] (1) Stable structure: The clamping body and the fixing part are made of high-strength steel, which has sufficient rigidity and clamping force, ensuring the stability and reliability of the clamping device during the concrete pouring process and avoiding problems such as deformation or displacement of the formwork.

[0024] (3) Flexible Adjustment: The clamping device of the present application allows the clamping body to be fine-tuned in the horizontal and / or vertical directions to accommodate beam side formwork of different sizes. This design improves the adaptability and flexibility of the clamping device, allowing construction workers to quickly adjust the clamping device and improve work efficiency.

[0025] (3) Easy installation: The clamping device of the present application has a simple structure and is easy to operate, and construction workers can quickly install and disassemble it.

[0026] (4) Reduced costs: The clamping device of the present application is reusable, which reduces construction costs. At the same time, since the clamping device has a simple structure and is easy to maintain, it also reduces subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present application and its features, features, configurations, and advantages will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings. Like reference numerals indicate like parts throughout the drawings. The drawings are not drawn to scale, emphasis being placed on illustrating the subject matter of the present application.

[0028] Figure 1 Schematic cross-sectional view of a beam side formwork clamping device in one embodiment of the present application;

[0029] Figure 2 A top view of the bottom support of the beam side formwork clamping device in one embodiment of the present application;

[0030] Figure 3 1. A side view of a clamping arm of a beam test template clamping device in one embodiment of the present application;

[0031] Numbers in the figure: 1. Base support; 2. Clamp arm 1; 3. Clamp arm 2; 4. Screw; 5. Nut; 6. Steel pad; 7. Concrete slab; 8. Concrete beam; 9. Wooden formwork; 10. Square timber. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described clearly and completely below through examples with reference to the accompanying drawings. It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by those of ordinary skill in the art to which this application belongs.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise expressly specified in the present application, the singular form is also intended to include the plural form, and it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0034] Example 1

[0035] The beam side formwork clamping device provided in this embodiment includes a clamping body, a fixing part and a connecting piece. The clamping body is arranged on the fixing part and includes two clamping pieces that are arranged opposite to each other and whose relative distance is adjustable; the connecting piece includes a first connecting piece and a second connecting piece that are respectively arranged at the top and bottom of the clamping body and whose relative distance is adjustable. Particularly, openings are provided at both ends of the fixing part, and a groove that cooperates with the opening of the fixing part is provided at the bottom of the clamping piece so that the clamping piece slides in the opening of the fixing part. A first through hole and a second through hole are provided at the top and bottom of the clamping piece, respectively, and the fixing part is provided with a third through hole opposite to the second through hole. The first connecting piece is connected to the top of the clamping piece through the first through hole and can slide in the first through hole, and the second connecting piece is connected to the fixing part and the bottom of the clamping piece through the second through hole and the third through hole. The connecting piece includes a connecting shaft and a fastener. The connecting shaft includes a screw, and the fastener includes a nut and a steel washer.

[0036] Please refer to Figures 1 to 2 The core structure of the beam side formwork clamping device provided in this embodiment includes a base 1, a clamping arm 1 2, a clamping arm 2 3, a screw 4, a nut 5 and a steel pad 6. The base 1, as the fixed part of the entire clamping device, is the supporting foundation and is made of high-strength steel. The openings at both ends, i.e., the slide positions, are composed of 300mm×20mm×20mm steel plates, and the middle part is made of 200mm×60mm×60mm steel plates. The slides at both ends of the base 1 are designed as rectangular grooves with a groove width of 20mm and a depth of 20mm to accommodate the sliding of the lower part of the clamping arm and realize the horizontal spacing adjustment function. The base 1 is placed directly on the support frame under the concrete beam 8 to ensure the overall stability of the device and maintain a horizontal state during the installation process, providing a reliable foundation for subsequent operations.

[0037] Please refer to Figure 1 and Figure 3The clamping body includes a clamping arm 1 2 and a clamping arm 2 3 that are relatively arranged. The design of the clamping arm adopts a segmented structure, which includes an upper clamping part, a lower fixing part and an intermediate sliding part. The height range of the upper clamping part is 400mm to 800mm, and the width and thickness are both 60mm. A first through hole with a width of 20mm is provided inside for inserting the screw 4 and adjusting it. The dimensions of the lower fixing device are 60mm long, 60mm wide and 40mm high. A second through hole with a diameter of 24mm is provided inside, allowing the screw 4 to move freely inside it, thereby realizing the fine-tuning function of the clamping arm in the horizontal direction. The dimensions of the middle sliding device are 20mm×20mm×20mm, and its outer surface fits tightly with the inner wall of the slide of the base 1. The sliding clearance is controlled within 0.1mm to prevent the clamping arm from shaking or offsetting during the sliding process. The opposite inner surfaces of the clamping arms are provided with anti-slip textures with a texture depth of 1mm and a spacing of 5mm. The friction coefficient is increased to above 0.6, effectively preventing the template from sliding.

[0038] The screw 4 is 600mm long and 20mm in diameter. One end of the screw is provided with an external thread with a thread length of 200mm, and the other end is a smooth cylindrical surface for inserting into the slideway of the clamping arm. The screw 4 cooperates with the nut 5 by rotation to adjust the spacing and clamping force between the clamping arms. The nut 5 has an inner diameter of 20mm, an outer diameter of 28mm, and a length of 30mm. Its outer surface is provided with a hexagonal boss for easy operation with a wrench. The nut 5 is fully engaged with the internal thread of the screw 4, and a displacement change of 1mm can be achieved with each rotation, ensuring that the transmission efficiency of the clamping force reaches more than 95%. The size of the steel pad 6 is 60mm×60mm×6mm, with a through hole with a diameter of 24mm in the center for being mounted on the screw 4. The steel pad 6 is located between the clamping arm and the nut 5. Its function is to disperse the pressure of the nut 5 on the clamping arm to prevent the clamping arm from being deformed or damaged due to excessive local force. The surface of the steel pad 6 is polished to a roughness Ra value of 1.6 μm, thereby reducing the friction resistance between the contact surface with the clamping arm.

[0039] This embodiment achieves significant technical effects through multiple innovations. The clamping arm adopts a segmented design, and the height of the upper clamping device is adjustable in the range of 400mm to 800mm, which is suitable for beam side formworks of different heights. The lower fixing device is connected to the screw 4 through a bolt hole. The diameter of the bolt hole is 24mm, allowing the screw 4 to move freely inside it, thereby realizing the fine-tuning function of the clamping arm in the horizontal direction. The middle sliding device is closely matched with the slide of the base 1, and its sliding clearance is controlled within 0.1mm to ensure that the clamping arm does not shake or deflect during the sliding process. The design of the screw 4 allows it to be telescopically adjusted in the vertical direction. The external thread of the screw 4 is 200mm long and the pitch is 2mm. A displacement change of 1mm can be achieved with each rotation. The internal thread of the nut 5 is fully engaged with the external thread of the screw 4 to ensure that the transmission efficiency of the clamping force reaches more than 95%. The diameter of the central through hole of the steel pad 6 is 24 mm, which forms a clearance fit with the diameter of the screw 4, and the clearance value is 0.02 mm, thereby reducing the friction resistance of the screw 4 during rotation.

[0040] The dimensions of the main components of the clamping device for stabilizing the beam side formwork are for illustration only in this embodiment and can be scaled proportionally based on the actual situation on site to adapt to the construction site and facilitate construction.

[0041] Example 2

[0042] This embodiment also provides a method for using the aforementioned beam side formwork clamping device, comprising the following steps: securing the fixing portion to the construction beam; adjusting the position and clamping force of the clamping body according to the size and shape of the beam side formwork; securing the fixing portion and the clamping body with a connector; pouring concrete; and, after pouring is completed, removing the clamping device. The method also includes cleaning and maintaining the clamping device after removal.

[0043] Specifically, the clamping device of this embodiment realizes its function through the following steps: S1: The construction personnel first complete the erection of the support frame under the concrete beam 8 to ensure that the support frame is stable and can withstand the load during the construction process. The support frame is usually composed of steel pipes and fasteners. The construction personnel need to determine the position and number of support points according to the design drawings and the actual situation on site to ensure that the bearing capacity of the support frame meets the requirements. S2: Place the base 1 stably on the support frame, adjust the position of the base 1 to keep it horizontal, and ensure that the slides at both ends of the base 1 are aligned with the sliding device in the middle of the clamp arm. The construction personnel can use a level to detect the horizontal state of the base 1 and correct the position of the base 1 by adjusting the height or angle of the support frame. S3: Place the clamp arm 1 2 and the clamp arm (2) 3 on both sides of the base 1 respectively, so that the middle sliding device of the clamp arm is embedded in the slide of the base 1, and adjust the position of the clamp arm to adapt to the width of the beam side template. Construction workers can manually push the clamp arm according to the actual width of the beam side formwork, so that it slides along the slide of the bottom support 1 until the inner surface of the clamp arm fits tightly against the beam side formwork. S4: Insert the screw 4 into the upper clamping device of the clamp arm, and adjust the extended length of the screw 4 by rotating the nut 5 to change the spacing between the clamp arms. Construction workers need to select the appropriate length of the screw 4 according to the height of the beam side formwork, and ensure that the external thread of the screw 4 is fully engaged with the internal thread of the nut 5. S5: Install the steel pad 6 between the screw 4 and the clamp arm, and then tighten the nut 5 so that the clamp arm applies a stable clamping force to the beam side formwork. Construction workers need to use a wrench to rotate the nut 5 until the clamping force of the clamp arm on the beam side formwork meets the design requirements. The function of the steel pad 6 is to disperse the pressure of the nut 5 on the clamp arm, ensure that the clamping force is evenly distributed, and prevent the clamp arm from being deformed or damaged due to excessive local force.

[0044] The technical effect of this embodiment is reflected through specific application scenarios. During the actual construction process, the construction workers first complete the erection of the support frame under the concrete beam 8 to ensure that the support frame is stable and can withstand the load during the construction process. The support frame is usually composed of steel pipes and fasteners. The construction workers need to determine the position and number of support points based on the design drawings and the actual situation on site to ensure that the bearing capacity of the support frame meets the requirements. Subsequently, the base 1 is placed stably on the support frame, the position of the base 1 is adjusted to keep it horizontal, and the slides at both ends of the base 1 are aligned with the sliding device in the middle of the clamp arm. The construction workers can use a spirit level to detect the horizontal state of the base 1 and correct the position of the base 1 by adjusting the height or angle of the support frame. Then, the clamp arm 1 2 and the clamp arm 2 3 are placed on both sides of the base 1 respectively, so that the middle sliding device of the clamp arm is embedded in the slide of the base 1, and the position of the clamp arm is adjusted to adapt to the width of the beam side formwork. The construction workers can manually push the clamp arm according to the actual width of the beam side formwork, so that it slides along the slide of the base 1 until the inner surface of the clamp arm is tightly fitted with the beam side formwork. Then, insert the screw 4 into the upper clamping device of the clamping arm, and adjust the protruding length of the screw 4 by rotating the nut 5, thereby changing the spacing between the clamping arms. Construction personnel need to select the appropriate length of the screw 4 according to the height of the beam side formwork, and ensure that the external thread of the screw 4 is fully engaged with the internal thread of the nut 5. Finally, install the steel pad 6 between the screw 4 and the clamping arm, and then tighten the nut 5 so that the clamping arm applies a stable clamping force to the beam side formwork. Construction personnel need to use a wrench to rotate the nut 5 until the clamping force of the clamping arm on the beam side formwork meets the design requirements. The function of the steel pad 6 is to disperse the pressure of the nut 5 on the clamping arm, ensure that the clamping force is evenly distributed, and avoid deformation or damage of the clamping arm due to excessive local force.

[0045] The clamping device of this embodiment is made of high-strength steel with a yield strength of not less than 350MPa and a tensile strength of not less than 450MPa, ensuring that the device can withstand large loads without deformation during the concrete pouring process. The anti-slip texture design of the clamping arm increases the friction coefficient between the beam side formwork, and the friction coefficient is increased to above 0.6, effectively preventing the formwork from sliding. The matching design of the screw and the nut enables the adjustment accuracy of the clamping force to reach ±0.5mm, meeting the needs of different construction environments. The installation process of the clamping device does not require the assistance of additional tools. The clamping force can be adjusted by manually rotating the nut, and the installation time is shortened by more than 50% compared to traditional devices. All components of the clamping device can be disassembled and reused, with a service life of not less than 10 years, which significantly reduces construction costs.

[0046] Those skilled in the art should understand that they can implement variations based on the prior art and the above embodiments, which are not described in detail here. Such variations do not affect the substantive content of this application and are not described in detail here.

[0047] The above describes the preferred embodiments of the present application. It should be understood that the present application is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-mentioned disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present application without departing from the scope of the technical solutions of the present application, or modify them into equivalent embodiments with equivalent changes, which does not affect the substantive content of the present application. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application that do not depart from the content of the technical solutions of the present application are still within the scope of protection of the technical solutions of the present application.

Claims

1. A beam side formwork clamping device, characterized in that: It includes a clamping body, a fixing part and a connecting piece. The clamping body is arranged on the fixing part and includes two clamping pieces arranged opposite to each other and with an adjustable relative distance. The connecting piece includes a first connecting piece and a second connecting piece respectively arranged on the upper and lower parts of the clamping body and with an adjustable relative distance.

2. The beam side formwork clamping device according to claim 1, characterized in that: Openings are provided at both ends of the fixing portion, and a groove is provided at the lower portion of the clamping piece to match the openings of the fixing portion, so that the clamping piece slides in the openings of the fixing portion.

3. The beam side formwork clamping device according to claim 1, characterized in that: The upper portion and the lower portion of the clamping member are respectively provided with a first through hole and a second through hole, and the fixing portion is provided with a third through hole opposite to the second through hole.

4. The beam side formwork clamping device according to claim 3, characterized in that: The first connecting member is connected to the upper portion of the clamping member through the first through hole and can slide in the first through hole. The second connecting member is connected to the fixing portion and the lower portion of the clamping member through the second through hole and the third through hole.

5. The beam side formwork clamping device according to claim 1, characterized in that: The connecting piece includes a connecting shaft and a fastener.

6. The beam side formwork clamping device according to claim 5, characterized in that: The connecting shaft includes a screw rod, and the fastener includes a nut and a steel washer.

7. The beam side formwork clamping device according to claim 1, characterized in that: The clamping body and the fixing portion are both made of high-strength steel.

8. The beam side formwork clamping device according to claim 1, characterized in that: Anti-skid pads or anti-skid textures are provided on opposite surfaces of the clamping member.

9. A method for using the beam side formwork clamping device according to claim 1, characterized in that: The following steps are involved: fixing the fixing portion according to the construction beam; Adjust the position and clamping force of the clamping body according to the size and shape of the beam side template; Fixing the fixing portion and the clamping body by the connecting member; pouring concrete; After pouring is completed, the clamping device is removed.

10. The method for using the beam side formwork clamping device according to claim 9, characterized in that: After the pouring is completed, the clamping device is removed and then cleaned and maintained.

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