Foundation pit supporting device for civil construction of transformer substation

Abstract

The foundation pit supporting device comprises a vertical plate, a bottom plate is arranged below the vertical plate, the bottom of the vertical plate is connected with the bottom plate through a plurality of hinges, a plurality of guide pipes are arranged on the vertical plate in a penetrating mode, the guide pipes are fixedly connected with the vertical plate, and the guide pipes are arranged on a vertical plate supporting mechanism in a sleeving mode; the vertical plate supporting mechanism comprises a supporting pipe, the supporting pipe is sleeved with the guide pipe, the supporting pipe is in sliding fit with the guide pipe, a supporting assembly used for supporting the vertical plate is arranged in the supporting pipe, the vertical plate supporting mechanism further comprises a spine, and the spine is arranged at the bottom of the supporting pipe and fixedly connected with the supporting pipe. On-site installation is not needed, the device only needs to be placed on the edge of a side slope, the spikes are inserted into soil, construction is easy and convenient, arrangement can be flexible, and the device is suitable for the characteristics that a transformer substation civil construction foundation pit is large in depth and irregular in shape.

Description

Technical Field

[0001] This invention relates to the field of foundation pit support, and more particularly to a foundation pit support device for substation civil construction. Background Technology

[0002] Foundation pit support refers to the temporary support and reinforcement measures taken during the construction of underground engineering projects to ensure the stability of the soil around the foundation pit, control the deformation of the surrounding strata, ensure the safety of underground structure construction, and protect the surrounding environment (such as adjacent buildings, roads, pipelines, etc.). It is a core component of deep foundation pit engineering and directly affects the success or safety of the entire project.

[0003] For example, patent CN119981085A discloses a deep foundation pit support structure, which relates to the field of deep foundation pit support. It includes a mechanism that allows multiple sets of deep foundation pit support structures to work together by connecting the base and the support plate. When multiple sets of deep foundation pit support structures are needed to support a deep foundation pit, the locking block on one side of the connecting seat is inserted into the fixing slot, allowing the multiple support plates to be connected and fixed. This provides a good working mechanism between the deep foundation pit support structures, thereby strengthening the support and improving the stability of the deep foundation pit support structure. This solves the problem that commonly used deep foundation pit support structures often lack a good working mechanism when used in combination, resulting in low fixation and inability to meet requirements.

[0004] Patent CN120006738A discloses a foundation pit support device and method, including a foundation pit support plate. The support plate has assembly mechanisms on both sides and a reinforcement mechanism on its front. Each assembly mechanism includes a limiting strip fixedly connected to the right side of the support plate, with multiple assembly holes on its front. This invention utilizes a combination of limiting strips, assembly holes, limiting grooves, mounting covers, knobs, screws, push plates, limiting rods, and guide ports. This allows the limiting strip on the right side of one foundation pit support plate to be inserted into the limiting groove on the left side of another. Rotating the knob and screw moves the push plate and limiting rod, facilitating the insertion of one end of the limiting rod into the assembly hole on the front of the limiting strip. This allows for the rapid assembly of two foundation pit support plates and improves assembly efficiency when assembling multiple support plates.

[0005] The basic principle of foundation pit support is to use various structural forms to balance the soil pressure and water pressure on the outside of the foundation pit, preventing soil collapse or excessive settlement. Depending on factors such as foundation pit depth, geological conditions, sensitivity of the surrounding environment, and construction period and cost, there are various support methods. Common support types include slope excavation, soil nailing walls, composite soil nailing walls, pile support (such as bored piles and SMW method piles), diaphragm walls, internal bracing systems (concrete bracing or steel bracing), and anchor (cable) support. In soft soil areas or ultra-deep foundation pits, a combination of "pile support plus internal bracing" or "diaphragm wall plus multiple bracing" is often used to provide sufficient rigidity and strength.

[0006] A complete foundation pit support system typically consists of three parts: the retaining structure, the support system, and the cutoff wall. The retaining structure mainly bears the lateral earth pressure and is the main body of the support; the support system (including horizontal supports and vertical columns) is used to reduce the span of the retaining structure and control its deformation; the cutoff wall cuts off the groundwater seepage path through high-pressure jet grouting piles, mixing piles, etc., to prevent soil erosion outside the pit and subsequent ground settlement.

[0007] During construction, the foundation pit support emphasizes "dynamic design and information-based construction." A rigorous monitoring system is established to monitor the displacement, settlement, internal forces of the support structure, groundwater level, and deformation of surrounding buildings in real time. Once the monitoring data exceeds the warning value, the emergency plan must be activated immediately, and measures such as reinforcement, backfilling and counter-pressure, or grouting reinforcement must be taken to control the risk at its inception.

[0008] With the acceleration of urbanization, foundation pit engineering is characterized by being "deep, large, close to, and complex," meaning that excavations are becoming deeper, larger in area, closer to the surrounding environment, and more complex in geological conditions. This places higher demands on support technology, leading to the emergence of new technologies such as green support, recyclable anchor bolts, and prefabricated supports, aiming to reduce construction waste, lower noise pollution, and improve construction efficiency.

[0009] During the civil construction of substations, there are often multiple independent or connected deep pits, such as the main transformer foundation, emergency oil tank, cable trench, grounding grid and underground substation. These pits are usually quite deep and irregular in shape. Therefore, the pit support equipment needs to have a certain degree of flexibility and sufficient strength to facilitate the deployment and provide effective support in the event of a collapse. However, the current pit support equipment is difficult to meet this requirement and needs to be improved. Summary of the Invention

[0010] The purpose of this invention is to provide a foundation pit support device for substation civil construction to solve the above-mentioned technical problems.

[0011] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0012] A foundation pit support device for substation civil construction includes a vertical plate, a base plate is provided below the vertical plate, the bottom of the vertical plate is connected to the base plate by multiple hinges, multiple guide tubes are provided through the vertical plate, the guide tubes are fixedly connected to the vertical plate, and the guide tubes are sleeved on the vertical plate support mechanism.

[0013] Preferably, the upright plate support mechanism includes a support tube, the guide tube is sleeved on the support tube, the support tube and the guide tube are slidably engaged, and a support component for supporting the upright plate is provided inside the support tube.

[0014] Preferably, the upright support mechanism further includes spikes, and the bottom of the support tube is provided with spikes, which are fixedly connected to the support tube.

[0015] Preferably, the upright support mechanism further includes a notch, and the base plate has a notch, with the support tube located within the notch.

[0016] Preferably, the upright support mechanism further includes a bent pipe, the top of the support pipe is provided with a bent pipe, the lower end of the bent pipe is fixedly connected to the top end of the support pipe, and the upper end of the bent pipe is threadedly connected to one end of the extension pipe.

[0017] Preferably, the support assembly includes a piston, which is slidably disposed within the support tube. A spring is disposed between the piston and the spike, with one end of the spring fixedly connected to the spike and the other end of the spring fixedly connected to the piston. The piston is connected to the guide tube via a connecting assembly.

[0018] Preferably, the connecting assembly includes a bracket, one end of which is fixedly connected to a guide tube, and the other end of which is fixedly connected to a telescopic rod. A slider is provided below the telescopic rod, and the telescopic end of the telescopic rod is fixedly connected to the top surface of the slider. First balls are provided on both the front and rear sides of the slider, and the first balls are fixedly connected to the slider. Slide rails are provided on both the front and rear sides of the slider, and a slide channel is opened on the opposite side of the two slide rails. The first balls are located in the slide channel. A slide groove is opened at the top of the support tube, and the slide rails are located in the slide groove. The two slide rails are fixedly connected to the inner wall of the slide groove. A base is provided below the slider, and the base is fixedly connected to the slider. A second ball is provided on the right side of the base, and the second ball is fixedly connected to the base. A ball receiving groove is opened at the top left side of the piston, and the second ball is located in the ball receiving groove.

[0019] Preferably, the piston is sleeved on a one-way bearing, the piston is fixedly connected to the outer ring of the one-way bearing, the inner ring of the one-way bearing is fixedly connected to the drive shaft, and an auger blade is fixedly mounted on the drive shaft. The auger blade is located inside the support tube. The slide rail includes several lower slide rails, and an upper slide rail is provided between two adjacent lower slide rails. The upper slide rail is located above the lower slide rails, and the upper slide rail and the lower slide rails are connected by a bend. The upper slide rail, the lower slide rail, and the bend are all formed on the slide rail.

[0020] Preferably, the ball receiving groove is located on the right side of the piston top.

[0021] The beneficial effects of this invention are:

[0022] This invention presents a foundation pit support device for substation civil construction. It eliminates the need for on-site installation; simply place it along the slope edge with spikes inserted into the soil. The device is easy to install, allows for flexible placement, and is well-suited for the deep and irregularly shaped foundation pits in substation civil construction. Furthermore, this invention can transfer a portion of the collapsed soil to a safe area, relieving pressure on the support panels and thus providing more effective support during collapses. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a foundation pit support device for substation civil construction according to the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of the support pipe of the foundation pit support device for substation civil construction according to the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of a connection component for a foundation pit support device for substation civil construction according to the present invention.

[0026] Figure 4 This invention relates to a foundation pit support device for substation civil construction. Figure 3 Enlarged schematic diagram of part A;

[0027] Figure 5 This is a schematic diagram of the piston structure of a foundation pit support device for substation civil construction according to the present invention.

[0028] Reference numerals: 1. Extension tube; 2. Bend; 3. Guide tube; 4. Slide groove; 5. Support tube; 6. Spike; 7. Notch; 8. Base plate; 9. Hinge; 10. Screw blade; 11. Drive shaft; 12. One-way bearing; 13. Spring; 14. Piston; 15. Ball bearing cavity; 16. Base; 17. First ball bearing; 18. Slider; 19. Telescopic end; 20. Second ball bearing; 21. Telescopic rod; 22. Second ball bearing; 23. Slide rail; 24. Upper slide rail; 25. Bend; 26. Lower slide rail; 27. Support plate. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example 1

[0033] like Figure 1-5 As shown, a foundation pit support device for substation civil construction includes a vertical plate 27, a base plate 8 is provided below the vertical plate 27, the bottom of the vertical plate 27 is connected to the base plate 8 by multiple hinges 9, multiple guide pipes 3 are provided through the vertical plate 27, the guide pipes 3 are fixedly connected to the vertical plate 27, and the guide pipes 3 are sleeved on the vertical plate support mechanism.

[0034] The upright plate support mechanism includes a support tube 5, a guide tube 3 sleeved on the support tube 5, the support tube 5 and the guide tube 3 slidingly engaged, and a support component for supporting the upright plate 27 is provided inside the support tube 5; the upright plate support mechanism also includes a spike 6, a spike 6 is provided at the bottom of the support tube 5, and the spike 6 is fixedly connected to the support tube 5; the upright plate support mechanism also includes a notch 7, a notch 7 is opened on the base plate 8, and the support tube 5 is located in the notch 7.

[0035] When in use, several of these devices are placed side by side along the edge of the foundation pit, and then the spikes 6 are inserted into the soil. When a collapse occurs, the soil is blocked by the upright plate 27, ensuring the safety of the substation civil construction.

[0036] This device does not require on-site installation; it can simply be placed on the edge of a slope with the spikes inserted into the soil. It is easy to construct and can be flexibly arranged, making it suitable for substation civil construction projects with deep and irregularly shaped foundation pits.

[0037] Example 2

[0038] like Figure 1-5As shown, while other parts are the same as in Embodiment 1, the difference between this embodiment and Embodiment 1 is that: the support assembly includes a piston 14, the piston 14 is slidably disposed in the support tube 5, a spring 13 is disposed between the piston 14 and the spike 6, one end of the spring 13 is fixedly connected to the spike 6, the other end of the spring 13 is fixedly connected to the piston 14, and the piston 14 is connected to the guide tube 3 through a connecting assembly.

[0039] The connecting assembly includes a bracket 20, one end of which is fixedly connected to a guide tube 3, and the other end of which is fixedly connected to a telescopic rod 21. A slider 18 is provided below the telescopic rod 21, and the telescopic end 19 of the telescopic rod 21 is fixedly connected to the top surface of the slider 18. First balls 17 are provided on both the front and rear sides of the slider 18, and the first balls 17 are fixedly connected to the slider 18. Slide rails 23 are provided on both the front and rear sides of the slider 18, and slide tracks are opened on the opposite side of the two slide rails 23. The first balls 17 are located in the slide tracks. A groove 4 is opened at the top of the support tube 5, and the slide rails 23 are located in the groove 4. The two slide rails 23 are fixedly connected to the inner wall of the groove 4. A base 16 is provided below the slider 18, and the base 16 is fixedly connected to the slider 18. A second ball 22 is provided on the right side of the base 16, and the second ball 22 is fixedly connected to the base 16. A ball receiving groove 15 is opened at the top left side of the piston 14, and the second ball 20 is located in the ball receiving groove 15.

[0040] When a landslide occurs, the support plate 27 is compressed by the soil. The support plate 27 pushes the piston 14 through the guide tube 3, telescopic rod 21, slider 18, base 16, and second ball bearing 22 in sequence. This causes the piston 14 to slide and compress the spring 13 inside the support tube 5, thereby offsetting part of the soil's pressure on the support plate 27 and preventing the support plate from breaking.

[0041] Furthermore, as the piston 14 slides and compresses the spring 13 inside the support tube 5, the spring 13 applies pressure to the spike 7, causing the spike 7 and the support tube 5 to penetrate deeper into the soil. In the event of a collapse, this device can utilize the pressure of the collapsed soil to reinforce the spike 7 and the support tube 5, making the entire device more stable.

[0042] Example 3

[0043] like Figure 1-5 As shown, while other parts are the same as in Embodiment 2, the difference between this embodiment and Embodiment 2 is that: the piston 14 is sleeved on the one-way bearing 12, the piston 14 is fixedly connected to the outer ring of the one-way bearing 12, the inner ring of the one-way bearing 12 is fixedly connected to the drive shaft 11, the drive shaft 11 is fixedly provided with an auger blade 10, and the auger blade 10 is located inside the support tube 5; the slide includes several lower slides 26, and an upper slide 24 is provided between two adjacent lower slides 26. The upper slide 24 is located above the lower slides 26, and the upper slide 24 and the lower slides 26 are connected by a bend 25. The upper slide 24, the lower slide 26, and the bend 25 are all opened on the slide rail 23, and the ball receiving groove 15 is located on the right side of the top of the piston 14.

[0044] The upright support mechanism also includes a bend 2. A bend 2 is provided at the top of the support pipe 5. The lower end of the bend 2 is fixedly connected to the top end of the support pipe 5, and the upper end of the bend 2 is threadedly connected to one end of the extension pipe 1.

[0045] When the base 16 and the second ball bearing 22 push the piston 14, causing the piston 14 to slide within the support tube 5, the first ball bearing 17 also slides intermittently along the upper slide rail 24, the bend 25, and the lower slide rail 26. Due to the different heights of the upper slide rail 24 and the lower slide rail 26, the first ball bearing 17 will fluctuate up and down during its sliding process, causing the base 16 and the second ball bearing 22 to slide up and down along the ball bearing receiving groove 15. Since the ball bearing receiving groove 15 is located on the right side of the top of the piston 14, when the ball bearing 22 slides up and down within the ball bearing receiving groove 15, it will drive the piston 14 to rotate back and forth. Since the piston 14 is connected to the one-way bearing 12, the reciprocating rotation of the piston 14 can only drive the drive shaft 11 and the auger blade 10 to rotate in one direction.

[0046] During a landslide, some soil enters the support pipe 5 through the chute 4. As the auger blades 10 rotate, they transport the soil into the support pipe 5 and discharge it into the extension pipe 1. On the one hand, this can transfer some of the collapsed soil to a safe area, relieving the pressure on the support plate 3. On the other hand, after the soil enters the extension pipe 1, the weight of the extension pipe 1 increases. The extension pipe 1, the bend pipe 2, the support pipe 5, and the support plate 27 form a lever structure with the hinge as the fulcrum, providing further support to the support plate 27.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A foundation pit support device for substation civil construction, characterized in that: Includes a vertical plate (27), with a base plate (8) below the vertical plate (27). The bottom of the vertical plate (27) is connected to the base plate (8) by multiple hinges (9). Multiple guide tubes (3) are provided through the vertical plate (27). The guide tubes (3) are fixedly connected to the vertical plate (27) and are sleeved on the vertical plate support mechanism.

2. The foundation pit support device for substation civil construction according to claim 1, characterized in that: The upright plate support mechanism includes a support tube (5), a guide tube (3) sleeved on the support tube (5), the support tube (5) and the guide tube (3) are slidably engaged, and a support component for supporting the upright plate (27) is provided inside the support tube (5).

3. The foundation pit support device for substation civil construction according to claim 2, characterized in that: The upright support mechanism also includes spikes (6), and the bottom of the support tube (5) is provided with spikes (6), and the spikes (6) are fixedly connected to the support tube (5).

4. The foundation pit support device for substation civil construction according to claim 3, characterized in that: The upright support mechanism also includes a notch (7), and the base plate (8) has a notch (7) and the support tube (5) is located inside the notch (7).

5. A foundation pit support device for substation civil construction according to claim 4, characterized in that: The upright support mechanism also includes a bent pipe (2), the top of the support pipe (5) is provided with a bent pipe (2), the lower end of the bent pipe (2) is fixedly connected to the top end of the support pipe (5), and the upper end of the bent pipe (2) is threadedly connected to one end of the extension pipe (1).

6. A foundation pit support device for substation civil construction according to claim 5, characterized in that: The support assembly includes a piston (14), which is slidably disposed in the support tube (5). A spring (13) is disposed between the piston (14) and the spike (6). One end of the spring (13) is fixedly connected to the spike (6), and the other end of the spring (13) is fixedly connected to the piston (14). The piston (14) is connected to the guide tube (3) through a connecting assembly.

7. A foundation pit support device for substation civil construction according to claim 6, characterized in that: The connecting assembly includes a bracket (20), one end of which is fixedly connected to a guide tube (3), and the other end of which is fixedly connected to a telescopic rod (21). A slider (18) is provided below the telescopic rod (21), and the telescopic end (19) of the telescopic rod (21) is fixedly connected to the top surface of the slider (18). A first ball bearing (17) is provided on both the front and rear sides of the slider (18), and the first ball bearing (17) is fixedly connected to the slider (18). A slide rail (23) is provided on both the front and rear sides of the slider (18), and a slide channel is provided on the opposite side of the two slide rails (23). The first ball bearing (17) is located in the slide channel. A slide groove (4) is provided on the top of the support tube (5), and the slide rail (23) is located in the slide groove (4). The two slide rails (23) are fixedly connected to the inner wall of the slide groove (4). A base (16) is provided below the slider (18), and the base (16) is fixedly connected to the slider (18). A second ball (22) is provided on the right side of the base (16), and the second ball (20) is fixedly connected to the base (16). A ball receiving groove (15) is provided on the top left side of the piston (14), and the second ball (20) is located in the ball receiving groove (15).

8. A foundation pit support device for substation civil construction according to claim 7, characterized in that: The piston (14) is sleeved on the one-way bearing (12). The piston (14) is fixedly connected to the outer ring of the one-way bearing (12). The inner ring of the one-way bearing (12) is fixedly connected to the drive shaft (11). The drive shaft (11) is fixedly provided with auger blades (10). The auger blades (10) are located inside the support tube (5). The slide includes several lower slides (26), and an upper slide (24) is provided between two adjacent lower slides (26). The upper slide (24) is located above the lower slides (26), and the upper slide (24) and the lower slides (26) are connected by a bend (25). The upper slide (24), lower slides (26), and bend (25) are all opened on the slide rail (23).

9. A foundation pit support device for substation civil construction according to claim 8, characterized in that: The ball receiving groove (15) is located on the right side of the top of the piston (14).

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