A high-efficiency support device suitable for the excavation of spillway tunnel foundation pits

Abstract

This utility model relates to the field of water conservancy engineering technology and discloses a high-efficiency support device suitable for the excavation of spillway foundation pits. It includes two support mechanisms, a fixing mechanism, and two connecting mechanisms. Each support mechanism includes a support plate with an internally threaded cylinder rotatably mounted at the center of its inner side. The fixing mechanism includes a support rod with hinged mounting brackets at both ends. The high-efficiency support device provided by this utility model achieves convenient disassembly, replacement, and transportation through modular design. The support is robust and adjustable, allowing for timely reinforcement based on foundation pit deformation. It is simple and convenient to operate, significantly improving support efficiency. Its reasonable structural design and strong adaptability effectively prevent soil and rock instability and collapse, ensuring construction safety and environmental stability. Simultaneously, it reduces maintenance and construction costs, exhibiting high economic efficiency and practicality, and is suitable for support engineering in spillway foundation pit excavation.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a high-efficiency support device suitable for the excavation of spillway pits. Background Technology

[0002] The excavation of the spillway foundation pit is a crucial construction step in water conservancy projects. It refers to the excavation of a foundation pit in a designated area, according to design requirements, to construct the spillway. A spillway is a hydraulic structure in a water conservancy project used to discharge floodwaters. When constructing a spillway, a foundation pit must first be excavated, much like creating a "foundation pit" for the building, laying the groundwork for the subsequent construction of the main structure of the spillway. During excavation, appropriate excavation equipment, such as excavators and bulldozers, is used to remove the soil and rock within the foundation pit area, based on the shape, size, and depth requirements determined in the engineering design. Post-excavation support is primarily for safety and stability. During excavation, the previously balanced soil and rock mass is disturbed, altering the stress state of the surrounding soil and rock, making it prone to instability, landslides, and collapses. This poses a serious threat to the lives of construction workers and the surrounding environment. Support enhances the stability of the foundation pit slopes and prevents soil and rock collapse. Meanwhile, there may be buildings, underground pipelines, and other facilities near the excavation pit. Soil deformation and displacement caused by the excavation may affect the normal use and safety of these facilities. Supporting the excavation pit can effectively control soil deformation and reduce the impact on the surrounding environment. Moreover, the support can provide a stable working space for the subsequent construction of the spillway, ensuring that the construction can proceed smoothly according to plan and avoiding construction interruptions or quality problems caused by the instability of the excavation pit.

[0003] In current spillway excavation support engineering, most existing support methods employ simple support plates combined with reinforcing steel bars. This traditional support method has several significant drawbacks. In terms of support strength, the simple support plates themselves have relatively simple materials and structural designs, limiting their pressure resistance. Furthermore, the reinforcing steel bars lack sufficient optimization in specifications and layout. The resulting support system is ill-suited to handle the significant pressure generated by excavation disturbance in the surrounding soil and rock, resulting in low support strength. Regarding adjustability, once the support plates and reinforcing steel bars are installed and fixed, their position and angle are difficult to adjust significantly. This makes it impossible to adapt promptly and effectively to changes in the actual deformation and stress of the excavation. This difficulty in adjustment renders this support method inadequate when facing complex and ever-changing engineering conditions.

[0004] Therefore, those skilled in the art have provided a highly efficient support device suitable for the excavation of spillway pits to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a high-efficiency support device suitable for the excavation of spillway pits. It features a modular design, which facilitates disassembly and replacement, is easy to transport, provides strong support, and can be adjusted and reinforced after support is completed. It is simple to operate, convenient to use, and has high support efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency support device suitable for the excavation of spillway pits, comprising two support mechanisms, a fixing mechanism, and two connecting mechanisms. The support mechanism includes a support plate, and an internally threaded cylinder is rotatably provided at the center of the inner side of the support plate.

[0007] The fixing mechanism includes a support rod, and each end of the support rod is hinged with a card seat. Each of the inner walls on both sides of the card seat is fixed with a card ball.

[0008] Furthermore, the connecting mechanism includes a connecting seat, and one side of the connecting seat is hinged with an inclined seat via a 90° self-locking hinge.

[0009] Furthermore, the upper and lower ends of the inclined seat and the connecting seat are provided with slots, and a threaded rod is fixedly provided at the rear end of the connecting seat.

[0010] Furthermore, the ball is slidably disposed inside the slot.

[0011] Furthermore, one end of the threaded rod is threaded inside the internally threaded cylinder.

[0012] Furthermore, a stop block is fixedly provided at the edge of the connecting seat and the card seat on the same side. The stop block and the inclined seat are respectively located on both sides of the connecting seat, and the connecting seat is located inside the card seat.

[0013] This utility model has the following beneficial effects:

[0014] This invention presents a high-efficiency support device suitable for the excavation of spillway tunnel foundation pits. The modular design of this device facilitates easy disassembly, replacement, and transportation. Each component is independently replaceable, reducing maintenance costs. It also allows for quick installation and adjustment by construction personnel. The support is robust, with the support plate tightly fitted to the inner wall of the foundation pit. The support rods, connected to the mechanism via clamps and balls, form a stable structure, ensuring high stability. The device has an adjustment function; by rotating the internal threaded cylinder and threaded rod, the length of the support rod can be increased, further tightening the fit between the support plate and the inner wall of the foundation pit, adapting to pit deformation and promptly reinforcing the support effect. Operation is simple and convenient; construction personnel can complete the support work without complex tools, significantly improving support efficiency and reducing construction costs. The device addresses issues of breakage and quality with a reasonable structural design. The inclined seat and connecting seat in the connection mechanism are hinged by a 90° self-locking hinge. The inclined design of the inclined seat pushes the support plate outward, increasing initial stability. After the inclined seat and connecting seat are perpendicular, the retaining bracket slides out, ensuring the stability of the support device. This device is highly adaptable, capable of handling different pit shapes and sizes, and suitable for complex and varied engineering conditions. It offers high safety, effectively preventing soil instability, landslides, and collapses, ensuring the safety of construction personnel and the stability of the surrounding environment. Simultaneously, it controls soil deformation, reducing the impact on surrounding buildings and underground pipelines. It is economical; the modular design and efficient support reduce construction and maintenance costs, improving overall construction efficiency. It is suitable for support engineering in spillway pit excavation, possessing high practicality and promotional value. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the present utility model;

[0016] Figure 2 This is a schematic diagram of the combination of the fixing mechanism and the connecting mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the support mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the fixing mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection mechanism of this utility model.

[0020] Legend:

[0021] 1. Support mechanism; 2. Fixing mechanism; 3. Connecting mechanism; 101. Support plate; 102. Internal threaded cylinder; 201. Support rod; 202. Card seat; 203. Card ball; 301. Inclined seat; 302. Connecting seat; 303. Card groove; 304. Threaded rod. 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] Reference Figures 1-5 The present invention provides an embodiment of a high-efficiency support device suitable for the excavation of spillway pits, comprising two support mechanisms 1, a fixing mechanism 2, and two connecting mechanisms 3. The support mechanism 1 includes a support plate 101, and an internally threaded cylinder 102 is rotatably disposed at the center of the inner side of the support plate 101.

[0024] The fixing mechanism 2 includes a support rod 201, with a card seat 202 hinged at both ends of the support rod 201, and a card ball 203 fixedly installed at the center of the inner wall on both sides of the card seat 202;

[0025] The connecting mechanism 3 includes a connecting seat 302. A slant seat 301 is hinged to one side of the connecting seat 302 via a 90° self-locking hinge. The slant seat 301 and the connecting seat 302 are provided with slots 303 at their upper and lower ends. A threaded rod 304 is fixedly provided at the rear end of the connecting seat 302.

[0026] The ball 203 is slidably disposed inside the slot 303, and one end of the threaded rod 304 is threaded inside the internal threaded cylinder 102. A stop is fixedly disposed on the edge of the connecting seat 302 on the same side as the slot 202. The stop and the inclined seat 301 are respectively located on both sides of the connecting seat 302, and the connecting seat 302 is located inside the slot 202.

[0027] Specifically, the support device adopts a modular design, mainly composed of a support mechanism 1, a fixing mechanism 2, and a connecting mechanism 3. This design allows each component to be disassembled and replaced independently, facilitating transportation and maintenance. The support plate 101 in the support mechanism 1 fits tightly against the inner wall of the pit. The support rod 201 in the fixing mechanism 2 is connected to the slot 303 of the connecting mechanism 3 via a mounting bracket 202 and a ball bearing 203, forming a stable support structure. The hinged design of the support rod 201 and the mounting bracket 202 allows the support plate 101 to be pushed outwards, further increasing the stability of the support.

[0028] After the initial support is completed, the length of the support rod 201 can be further increased by rotating the internal threaded cylinder 102 away from the threaded rod 304, making the support plate 101 fit more firmly against the inner wall of the pit. This adjustment function allows the support device to be adjusted in a timely manner according to the actual deformation of the pit, ensuring the stability of the support.

[0029] The operation of this device is simple and straightforward. First, the support plate 101 is attached to the inner wall of the pit. Then, it is initially fixed using the connecting mechanism 3 and the fixing mechanism 2. Finally, it is reinforced by adjusting the internal threaded cylinder 102 and the threaded rod 304. The entire operation requires no complex tools or techniques, allowing construction personnel to quickly master and implement it. Due to its modular design and adjustable function, the device enables construction personnel to quickly complete the support work and make timely adjustments according to the actual situation, greatly improving support efficiency. Furthermore, the high stability and robustness of the support device reduce downtime and quality problems caused by unstable support during construction. The high-efficiency support device provided by this invention has advantages such as modular design, robust support, strong adjustable function, simple operation, high support efficiency, strong adaptability, high safety, and good economy. It effectively solves the problems existing in the prior art and is suitable for support engineering in spillway pit excavation.

[0030] Working principle: In use, first excavate the foundation pit of the spillway. Then, place the two support plates 101 without the internal threaded cylinder 102 on the inner walls of the two sides of the foundation pit respectively. Then, take out the connecting mechanism 3, so that the threaded rod 304 of the connecting mechanism 3 is threaded into the internal threaded cylinder 102, threaded to the innermost part. Then, take out the fixing mechanism 2. First, the clamp 202 is fitted into the inclined seat 301, and the clamping ball 203 is located in the clamping groove 303. Then, push the clamp 202 inward, so that the clamp 202 moves onto the connecting seat 302. At the same time, the clamping ball 203 also moves into the clamping groove 303 of the connecting seat 302. The support rod 201 and the clamp 202 are hinged, which has a certain degree of flexibility and facilitates the sliding of the clamp 202. Since the inclined seat 301 is inclined, the clamp 202 moves... During the operation, the support rod 201 will push the support plate 101 outward a short distance, initially increasing its stability. Then, the inclined seat 301 is adjusted, and the 90° self-locking hinge is used to make the inclined seat 301 perpendicular to the connecting seat 302, which is used to block the clamping seat 202 and prevent it from slipping out. Then, the support rod 201 is fixed with a tool to prevent it from rotating. Then, the internal threaded cylinder 102 is rotated with a tool, so that the internal threaded cylinder 102 and the threaded rod 304 are separated by a certain distance, but they cannot be separated. The separation of the internal threaded cylinder 102 and the threaded rod 304 further increases the length of the support rod 201, making the support plate 101 fit more firmly against the inner wall of the foundation pit, and the overall stability is higher. After completing the above operations, the construction operation can be carried out in conjunction with the prefabricated spillway culvert set in the foundation pit.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency supporting device suitable for spillway tunnel foundation pit excavation, comprising two supporting mechanisms (1), a fixing mechanism (2), and two connecting mechanisms (3), characterized in that: The support mechanism (1) includes a support plate (101), and an internally threaded cylinder (102) is rotatably disposed at the center of the inner side of the support plate (101). The fixing mechanism (2) includes a support rod (201), and both ends of the support rod (201) are hinged with a card seat (202). A card ball (203) is fixedly installed at the center of the inner wall on both sides of the card seat (202).

2. The high-efficiency supporting device suitable for spillway tunnel foundation pit excavation according to claim 1, characterized in that: The connecting mechanism (3) includes a connecting seat (302), and a slant seat (301) is provided on one side of the connecting seat (302) by means of a 90° self-locking hinge.

3. The high efficiency supporting device suitable for spillway tunnel foundation pit excavation according to claim 2, characterized in that: The upper and lower ends of the inclined seat (301) and the connecting seat (302) are provided with slots (303), and the rear end of the connecting seat (302) is fixedly provided with a threaded rod (304).

4. The high-efficiency support device for spillway excavation as described in claim 3, characterized in that: The ball (203) is slidably disposed inside the slot (303).

5. The high efficiency supporting device for spillway tunnel foundation pit excavation according to claim 3, characterized in that: One end of the threaded rod (304) is threaded inside the internal threaded cylinder (102).

6. The high efficiency supporting device for spillway tunnel foundation pit excavation according to claim 2, characterized in that: A stop block is fixedly provided on the edge of the connecting seat (302) and the card seat (202) on the same side. The stop block and the inclined seat (301) are located on both sides of the connecting seat (302), and the connecting seat (302) is located inside the card seat (202).

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