A trenching auxiliary device for construction of a circular diaphragm wall

Abstract

This utility model discloses an auxiliary device for trenching in the construction of circular diaphragm walls, specifically relating to the field of building construction technology. It includes a side-pressure template with multiple arc-shaped support plates on its inner side. A telescopic rod is fixedly installed on the inner side of each arc-shaped support plate. One end of the telescopic rod passes through a guide cylinder and is positioned inside a support column. A servo motor is fixedly installed inside the support column. The output shaft of the servo motor is fixedly connected to a threaded rod located inside the support column. Multiple mounting discs are threaded onto the threaded rod. Multiple connecting rods are hinged to the bottom of each mounting disc. The end of each connecting rod away from the mounting disc is rotatably connected to one end of the telescopic rod. This utility model can provide auxiliary support for circular trenches of different diameters, simplifying operation. Furthermore, the large contact area between the arc-shaped support plates and the side-pressure template provides better support for the template, facilitating the construction of circular trenches.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to an auxiliary device for trenching in the construction of a circular diaphragm wall. Background Technology

[0002] A diaphragm wall is constructed by excavating a trench of a certain width and depth along the perimeter of a deep foundation or underground structure using specialized equipment and slurry for wall protection. A reinforcing cage is placed in the trench, and concrete is poured into the slurry using the tremie pipe method to form a unit wall segment. The units are constructed sequentially and connected by a certain jointing method to form a continuous underground reinforced concrete wall. This wall serves to prevent seepage and retain soil during foundation pit excavation, to support the foundations of adjacent buildings, and to directly become part of the foundation structure that bears direct loads.

[0003] Before constructing the diaphragm wall, precast wall structures are needed on the inner walls of the trench to form a precast channel. Then, a reinforcing cage is placed inside the channel, and concrete is poured to form the diaphragm wall. During the precast channel construction, a precast cavity is created between the vertical lateral pressure formwork and the trench wall. The assembled reinforcing mesh is then vertically erected within the precast cavity before pouring concrete. After the precast cavity is constructed, lateral pressure must be applied to the lateral pressure formwork to prevent it from tipping over.

[0004] Currently, when constructing precast circular diaphragm walls, the common practice is to install inclined support columns below the side-pressure formwork to brace against the formwork and prevent it from tipping over. However, this method is not very effective at limiting the position of the side-pressure formwork, and it requires manual fixation of multiple support columns, which is time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary device for trenching in the construction of circular diaphragm walls, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A trenching auxiliary device for constructing a circular diaphragm wall includes a side-pressure template. Multiple arc-shaped support plates are arranged on the inner side of the side-pressure template. A telescopic rod is fixedly arranged on the inner side of each arc-shaped support plate. One end of the telescopic rod passes through a guide cylinder and is located inside a support column. A servo motor is fixedly arranged inside the support column. The output shaft of the servo motor is fixedly connected to a threaded rod located inside the support column. Multiple mounting discs are threaded onto the threaded rod. Multiple connecting rods are hinged to the bottom end of each mounting disc. The end of each connecting rod away from the mounting disc is rotatably connected to one end of the telescopic rod.

[0008] In a preferred embodiment, a support base is fixedly provided at the bottom end of the support column. The support base is fixed to the ground of the trench by anchor bolts, which makes the support column more stable.

[0009] In a preferred embodiment, the guide cylinder is fixedly mounted on the outer wall of the support column, and the telescopic rod is slidably connected to the guide cylinder. The guide cylinder can guide the telescopic rod and ensure that the telescopic rod can extend and retract in the horizontal direction.

[0010] In a preferred embodiment, the upper end of the threaded rod is rotatably mounted inside the support column via a bearing, and a rubber buffer pad is fixedly mounted on the outer wall of the arc-shaped support plate. The bearing can improve the stability of the threaded rod during rotation, and the rubber buffer pad can give the arc-shaped support plate a certain buffering effect.

[0011] In a preferred embodiment, a U-shaped mounting component is fixedly provided at the bottom end of the mounting plate, and a pin is fixedly provided at one end of the connecting rod. One end of the pin is rotatably disposed on the inner side wall of the U-shaped mounting component. The U-shaped mounting component facilitates the hinge connection between the connecting rod and the mounting plate.

[0012] In a preferred embodiment, the telescopic rod is provided with scale lines, and a torsion spring is provided on the outer side of the pin. One end of the torsion spring is fixed on the inner side wall of the U-shaped mounting piece, and the other end of the torsion spring is provided on the outer side wall of the connecting rod. The scale lines facilitate the determination of the telescopic rod's extension distance, and the torsion spring allows the connecting rod to be adjusted within a certain range, providing a buffering function.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses an arc-shaped support plate to support the side pressure template inside the circular groove. The arc-shaped support plate is driven by a servo motor, threaded rod, mounting plate, connecting rod, telescopic rod, and other structures, which can provide auxiliary support for circular grooves of different diameters, making operation simpler. Moreover, the arc-shaped support plate has a large contact area with the side pressure template, providing better support for the side pressure template and facilitating the construction of the circular groove. In addition, rubber buffer pads and torsion springs are provided, giving the arc-shaped support plate a certain buffering effect and making it convenient to use. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the structure of the present invention in use;

[0018] Figure 3 This is a schematic diagram of the structure of the trenching auxiliary device of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the support column of this utility model;

[0020] Figure 5 This is a schematic diagram of the installation structure of the connecting rod of this utility model.

[0021] In the diagram: 1. Side pressure template; 2. Arc-shaped support plate; 3. Telescopic rod; 4. Guide cylinder; 5. Support column; 6. Servo motor; 7. Threaded rod; 8. Mounting plate; 9. Connecting rod; 10. Support base; 11. Anchor bolt; 12. Rubber buffer pad; 13. U-shaped mounting part; 14. Pin shaft; 15. Torsion spring; 16. Scale line. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides an auxiliary device for trenching in the construction of circular diaphragm walls, the technical solution of which is as follows:

[0024] A trenching auxiliary device for constructing a circular diaphragm wall includes a side-pressure template 1. Multiple arc-shaped support plates 2 are arranged on the inner side of the side-pressure template 1. A telescopic rod 3 is fixedly arranged on the inner side of the arc-shaped support plates 2. One end of the telescopic rod 3 passes through a guide cylinder 4 and is located inside a support column 5. A servo motor 6 is fixedly arranged inside the support column 5. The output shaft of the servo motor 6 is fixedly connected to a threaded rod 7 located inside the support column 5. Multiple mounting discs 8 are threaded onto the threaded rod 7. Multiple connecting rods 9 are hinged to the bottom end of each mounting disc 8. The end of the connecting rod 9 away from the mounting disc 8 is rotatably connected to one end of the telescopic rod 3.

[0025] In a preferred embodiment, a support base 10 is fixedly provided at the bottom end of the support column 5. The support base 10 is fixedly provided on the ground of the trench by anchor bolts 11. The support base 10 can increase the contact area with the ground inside the trench and enhance the stability of the equipment.

[0026] In a preferred embodiment, the guide cylinder 4 is fixedly mounted on the outer side wall of the support column 5, and the telescopic rod 3 is slidably connected to the guide cylinder 4. The telescopic rod 3 is more stable when it moves along the guide cylinder 4, which enables the arc-shaped support plate 2 to move stably.

[0027] In a preferred embodiment, the upper end of the threaded rod 7 is rotatably mounted inside the support column 5 via a bearing, and a rubber buffer pad 12 is fixedly mounted on the outer side wall of the arc-shaped support plate 2. The rubber buffer pad 12 can increase the friction between the arc-shaped support plate 2 and the side pressure template 1, and also has a certain buffering effect.

[0028] In a preferred embodiment, a U-shaped mounting component 13 is fixedly provided at the bottom end of the mounting plate 8, a pin 14 is fixedly provided at one end of the connecting rod 9, and one end of the pin 14 is rotatably provided on the inner side wall of the U-shaped mounting component 13. A scale line 16 is provided on the telescopic rod 3, and a torsion spring 15 is provided on the outer side of the pin 14. One end of the torsion spring 15 is fixedly provided on the inner side wall of the U-shaped mounting component 13, and the other end of the torsion spring 15 is provided on the outer side wall of the connecting rod 9. One end of the connecting rod 9 is rotatably provided on the inner side of the U-shaped mounting component 13 through the pin 14. The torsion spring 15 enables the connecting rod 9 to have a buffering effect, resulting in better contact between the arc-shaped support plate 2 and the side pressure template 1.

[0029] The working principle of this utility model is as follows:

[0030] When using the trenching auxiliary device for diaphragm wall construction, the support base 10 is placed at the center of the circular trench and fixed with anchor bolts 11. The steel mesh is erected on the inner side of the circular trench, and then the side pressure template 1 is placed vertically on the inner side of the two side walls of the circular trench, forming a precast cavity between the side walls of the circular trench. The steel mesh is located in the precast cavity. Then, the forming auxiliary device is used to support the side pressure template 1. During support, the servo motor 6 is turned on, and the servo motor 6 drives the threaded rod 7 to rotate. When the threaded rod 7 rotates, the mounting plate 8 can move downward. When the mounting plate 8 moves downward, the connecting rod 9 can push the telescopic rod 3 to extend. The telescopic rod 3 can push the arc-shaped support plate 2 closer to the side pressure template 1 until the arc-shaped support plate 2 contacts the side pressure template 1. The arc-shaped support plate 2 is used to support the side pressure template 1 to prevent the side pressure template 1 from tilting.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trenching aid for the construction of a circular diaphragm wall comprising a side formwork panel (1) characterised in that: The inner side of the side pressure template (1) is provided with multiple arc-shaped support plates (2), and the inner side of the arc-shaped support plates (2) is fixedly provided with telescopic rods (3). One end of the telescopic rods (3) passes through the guide cylinder (4) and is set inside the support column (5). The inside of the support column (5) is fixedly provided with a servo motor (6). The output shaft of the servo motor (6) is fixedly connected to a threaded rod (7) set inside the support column (5). Multiple mounting discs (8) are threaded on the threaded rod (7). The bottom end of each mounting disc (8) is hinged with multiple connecting rods (9). The end of the connecting rod (9) away from the mounting disc (8) is rotatably connected to one end of the telescopic rod (3).

2. The trenching aid for diaphragm wall construction according to claim 1, characterized in that: The bottom end of the support column (5) is fixedly provided with a support base (10), and the support base (10) is fixedly provided on the ground of the trench by anchor bolts (11).

3. The trenching auxiliary device for construction of a circular diaphragm wall according to claim 1, characterized in that: The guide cylinder (4) is fixedly installed on the outer wall of the support column (5), and the telescopic rod (3) is slidably connected to the guide cylinder (4).

4. The trenching aid for diaphragm wall construction according to claim 1, characterized in that: The upper end of the threaded rod (7) is rotatably mounted inside the support column (5) via a bearing, and a rubber buffer pad (12) is fixedly mounted on the outer side wall of the arc-shaped support plate (2).

5. The trenching auxiliary device for construction of a circular diaphragm wall according to claim 1, characterized in that: The bottom end of the mounting plate (8) is fixedly provided with a U-shaped mounting component (13), and one end of the connecting rod (9) is fixedly provided with a pin (14). One end of the pin (14) is rotatably provided on the inner side wall of the U-shaped mounting component (13).

6. The trenching aid for diaphragm wall construction according to claim 5, characterized in that: The telescopic rod (3) is provided with scale lines (16), and a torsion spring (15) is provided on the outside of the pin (14). One end of the torsion spring (15) is fixed on the inner wall of the U-shaped mounting piece (13), and the other end of the torsion spring (15) is provided on the outer wall of the connecting rod (9).

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