Formwork fixing device for construction projects

Abstract

This utility model discloses a formwork fixing device for construction engineering, including a fixing base, the bottom of which is fixed by an expansion bolt. A fixing shell that mates with the conical surface of the fixing base is installed on top of the fixing base. The outer perimeter and top of the fixing shell are connected to a telescopic arm via a ball joint structure. The length of the telescopic arm is adjustable. The end of the telescopic arm away from the ball joint structure is connected to the back rib at the rear of the formwork. The telescopic arm includes a hollow outer arm, with inner arms threadedly connected to both ends of the outer arm. Handles symmetrically arranged on the outer wall of the outer arm are fixedly installed on both sides. The formwork fixing device for construction engineering provided by this utility model can well adapt to different support requirements of formwork, expand its application range, improve the flexibility and convenience of device adjustment, and form a complete and stable force transmission path, effectively ensuring the stability of the formwork during the pouring process.

Description

Technical Field

[0001] This utility model relates to a formwork fixing device for building engineering, belonging to the field of building construction technology. Background Technology

[0002] Formwork in construction engineering is a temporary support structure, manufactured according to design requirements, to shape concrete structures and components in the specified positions and geometric dimensions, maintaining their correct position. When using formwork, its back must be supported by fixing devices to prevent deformation under stress during concrete pouring.

[0003] Traditional formwork fixing devices for construction projects still have the following technical problems, based on practical experience: It is not convenient to flexibly adjust templates of different specifications and tilt angles. Adjusting the position and angle of the support points is complicated and difficult to achieve quickly.

[0004] There is a problem of insufficient stability. During concrete pouring, the formwork is prone to displacement and deformation due to lateral pressure.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This utility model addresses the shortcomings of the prior art by providing a formwork fixing device for construction engineering. It can adapt well to different support requirements of formwork, expand the scope of application, improve the flexibility and convenience of device adjustment, and form a complete and stable force transmission path, effectively ensuring the stability of the formwork during the pouring process.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: The formwork fixing device for construction engineering includes a fixing base, the bottom of which is fixed by an expansion bolt. A fixing shell that mates with the cone surface of the fixing base is installed on top of the fixing base. The outer perimeter and top of the fixing shell are connected to a telescopic arm via a ball joint structure. The length of the telescopic arm is adjustable. The end of the telescopic arm away from the ball joint structure is connected to the back rib behind the formwork. The telescopic arm includes a hollow outer arm. Inner arms that are threadedly connected to both ends of the outer arm are installed inside. Handles that are symmetrically arranged on the left and right sides are fixedly installed on the outer wall of the outer arm.

[0008] Furthermore, the bottom center of the fixing base has a through hole arranged vertically, and an expansion bolt is inserted into the through hole and installed in the structural layer.

[0009] Furthermore, the mounting base is provided with an outer conical surface, which has a structure that is smaller at the top and larger at the bottom.

[0010] Furthermore, the fixed shell is provided with an inner conical surface that matches the size of the outer conical surface, and the inner conical surface and the outer conical surface achieve a conical fit.

[0011] Furthermore, the outer periphery of the fixing shell is provided with multiple circumferentially distributed protrusions, and the top of the fixing shell is provided with a protrusion, each of which has mounting holes for bolts to pass through.

[0012] Furthermore, the omnidirectional ball structure includes an omnidirectional ball seat, which is fixedly connected to the fixed shell by bolts.

[0013] Furthermore, a universal ball is installed inside the universal ball seat, and a movable hinge seat is fixedly installed on the universal ball.

[0014] Furthermore, hinge plates are fixedly installed on the ends of both inner arms that are away from the outer arms.

[0015] Furthermore, one of the hinge plates is hinged to the movable hinge seat via a pin.

[0016] Furthermore, another hinge plate is hinged to the fixed hinge seat on the back of the back rib via a pin.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: The universal ball structure of this device can determine the number and direction of installations based on the tilt angle of the template and the position of the back rib. Furthermore, the telescopic arm can be adjusted in both angle and length, which can well adapt to the support requirements of different templates and significantly expand the applicability of the device.

[0018] By setting a handle on the outer arm, it is easy to rotate the outer arm to adjust the extension length of the inner arm. This allows the other end of the telescopic arm to be quickly connected to the fixed hinge seat on the back rib and adjusted into place, greatly improving the flexibility and convenience of the device adjustment.

[0019] During concrete pouring, the lateral pressure of this device is transmitted to the back rib through the formwork, and then through the telescopic arm, universal ball structure, fixed shell, and fixed seat, and finally to the expansion bolts and the solid structural layer, forming a complete and stable force transmission path, which effectively ensures the stability of the formwork during the pouring process.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the connection between the fixed base and the fixed shell; Figure 3 This is an installation diagram of this utility model.

[0022] In the figure, 1-fixed base, 11-through hole, 12-outer conical surface; 2-expansion bolt; 3-fixed shell, 31-inner conical surface, 32-protrusion, 33-mounting hole; 4-universal ball structure, 41-universal ball seat, 42-universal ball, 43-movable hinge seat; 5-telescopic arm, 51-outer arm, 52-inner arm, 53-hinge plate, 54-handle; 6-template; 7-back rib, 71-fixed hinge seat. Detailed Implementation

[0023] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0024] like Figures 1-3 As shown in the figure, this utility model provides a formwork fixing device for construction engineering, including a fixing base 1, a fixing shell 3 that mates with the cone surface of the fixing base 1, the periphery and top of the fixing shell 3 are connected to the telescopic arm 5 through the universal ball structure 4, the length of the telescopic arm 5 is adjustable, and the end of the telescopic arm 5 away from the universal ball structure 4 is connected to the back rib 7 behind the formwork 6 to fix and support the back of the formwork 6.

[0025] The bottom center of the fixed base 1 has a through hole 11 arranged vertically, and an expansion bolt 2 is inserted into the through hole 11. The expansion bolt 2 is installed in the structural layer to prevent the fixed base 1 from shifting to the side under force.

[0026] The mounting base 1 is provided with an outer conical surface 12, which adopts a structure that is smaller at the top and larger at the bottom, making it convenient for the longitudinal installation of the mounting shell 3.

[0027] The fixed shell 3 is provided with an inner conical surface 31 that matches the size of the outer conical surface 12. The inner conical surface 31 and the outer conical surface 12 achieve a conical fit, and the fixed shell 3 can automatically align and center.

[0028] The outer periphery of the fixed shell 3 is provided with a plurality of circumferentially distributed protrusions 32, and the top of the fixed shell 3 is provided with a protrusion 32, and each protrusion 32 has a mounting hole 33 for bolts to pass through.

[0029] The omnidirectional ball structure 4 includes an omnidirectional ball seat 41, which is fixedly connected to the fixed shell 3 by bolts.

[0030] A universal ball 42 is installed inside the universal ball seat 41, and a movable hinge seat 43 is fixedly installed on the universal ball 42. The movable hinge seat 43 can swing at a certain angle along the universal ball seat 41 under the action of the universal ball 42.

[0031] The telescopic arm 5 includes a hollow outer arm 51, with inner arms 52 threadedly connected to both ends of the outer arm 51. During rotation of the outer arm 51, the two inner arms 52 move towards or away from each other.

[0032] Hinges 53 are fixedly installed on the ends of the two inner arms 52 away from the outer arms 51. One hinge plate 53 is hinged to the movable hinge seat 43 by a pin, and the other hinge plate 53 is hinged to the fixed hinge seat 71 on the back of the back rib 7 by a pin.

[0033] The outer wall of the outer arm 51 is fixedly installed with handles 54 arranged symmetrically on the left and right sides. The handles 54 facilitate the rotation of the outer arm 51 under force.

[0034] The specific working steps of this utility model are as follows: The fixing seat 1 is securely installed on the structural layer using expansion bolts 2. The fixing shell 3 is then fastened to the fixing seat 1, automatically aligning and centering using the conical surface fit. Based on the inclination angle of the template 6 and the position of the back rib 7, the number and orientation of the universal ball structures 4 to be installed are determined. The universal ball structures 4 are bolted to the protrusion 32 of the fixing shell 3. One end of the telescopic arm 5 is connected to the movable hinge seat 43 via a pin. The telescopic arm 5 can be adjusted in both angle and length, allowing the other end of the telescopic arm 5 to connect to the fixed hinge seat 8 on the back rib 7. Once all the telescopic arms 5 at all support points are adjusted and sufficient preload is applied, the template 6 is securely supported and fixed. The lateral pressure generated during concrete pouring is transmitted to the back rib 7 through the template 6, which then transmits the force to the telescopic arm 5. The force is ultimately transmitted through the universal ball structure, the fixing shell, the fixing seat, to the expansion bolts and the robust structural layer, forming a complete force transmission path.

[0035] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A building construction formwork fixing device characterised in that: It includes a fixed base (1), the bottom of the fixed base (1) is fixed by an expansion bolt (2), a fixed shell (3) that mates with the conical surface is installed on the top of the fixed base (1), the periphery and top of the fixed shell (3) are connected to the telescopic arm (5) through a ball joint structure (4), the length of the telescopic arm (5) is adjustable, and the end of the telescopic arm (5) away from the ball joint structure (4) is connected to the back rib (7) behind the template (6); the telescopic arm (5) includes a hollow outer arm (51), and inner arms (52) that are threadedly connected to both ends of the outer arm (51) are installed inside, and handles (54) that are symmetrically arranged on the left and right sides are fixedly installed on the outer wall of the outer arm (51).

2. The construction formwork fixing device of claim 1, wherein: The bottom center of the fixed base (1) has a through hole (11) set in the vertical direction, and an expansion bolt (2) is inserted into the through hole (11). The expansion bolt (2) is installed in the structural layer.

3. The construction formwork fixing device of claim 1, wherein: The fixed base (1) is provided with an outer conical surface (12), which adopts a structure with a smaller upper part and a larger lower part.

4. A construction formwork fixing device as claimed in claim 3, wherein: The fixed shell (3) is provided with an inner conical surface (31) that matches the size of the outer conical surface (12), and the inner conical surface (31) and the outer conical surface (12) achieve conical surface fit.

5. The construction formwork fastening device of claim 1, wherein: The outer periphery of the fixed shell (3) is provided with a plurality of circumferentially distributed protrusions (32), and the top of the fixed shell (3) is provided with a protrusion (32). Each protrusion (32) has a mounting hole (33) for bolts to pass through.

6. The construction formwork fastening device of claim 1, wherein: The omnidirectional ball structure (4) includes an omnidirectional ball seat (41), which is fixedly connected to the fixed shell (3) by bolts.

7. A construction formwork fixing device as claimed in claim 6, wherein: A universal ball (42) is installed inside the universal ball seat (41), and a movable hinge seat (43) is fixedly installed on the universal ball (42).

8. A construction formwork fixing device as claimed in claim 7, wherein: Hinges (53) are fixedly installed on the ends of the two inner arms (52) away from the outer arm (51).

9. A construction formwork fixing device as claimed in claim 8, wherein: One of the hinge plates (53) is hinged to the movable hinge seat (43) by a pin.

10. The construction formwork fixing device of claim 9, wherein: Another hinge plate (53) is hinged to the fixed hinge seat (71) on the back of the back rib (7) by a pin.

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