Adjustable foundation pit supporting mechanism

Abstract

The adjustable foundation pit supporting mechanism comprises a base, a vertical supporting fixing mechanism, an angle supporting fixing mechanism and an adjustable stabilizing mechanism, one end of the top of the base is provided with the vertical supporting fixing mechanism, and first and second supporting mechanisms are arranged between the base and the vertical supporting fixing mechanism, the foundation pit supporting mechanism can adjust the depth of the anchor rod embedding according to the condition of the foundation pit, the stability of the foundation pit supporting is ensured, the height of the vertical direction of the foundation pit supporting can be adjusted according to the lifting of the lifting plate, so that the higher supporting is adapted, the height is adjustable, the second supporting effect can be achieved through the arrangement of the supporting rod and the sliding rod between the base and the lifting plate, the stability of the whole foundation pit supporting is ensured, the supporting of the slope foundation pit is adapted, the situation that the previous foundation pit supporting structure is fixed and the adjustment is poor is avoided, the use range is increased, and the foundation pit supporting mechanism is convenient for promotion.

Description

Technical Field

[0001] This invention relates to the field of building technology, specifically to an adjustable foundation pit support mechanism. Background Technology

[0002] Foundation pit support is a set of measures used to support, reinforce and protect the side walls and surrounding environment of a foundation pit in order to ensure the safety of underground structure construction and the surrounding environment. Pile and wall support structures often use steel sheet piles, reinforced concrete sheet piles, column-type cast-in-place piles, diaphragm walls, etc. Existing foundation pit support structures generally cannot adjust their support height. In actual use, once the soil above becomes loose, it is difficult to achieve good support. They have poor adjustability and low practicality. Moreover, existing foundation pit support can generally only support foundation pits in the vertical direction, which limits their use. Therefore, we propose an adjustable foundation pit support mechanism. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable foundation pit support mechanism to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an adjustable foundation pit support mechanism, comprising a base, a vertical support fixing mechanism, an angle support fixing mechanism, and an adjustable stabilizing mechanism, wherein a vertical support fixing mechanism is provided at one end of the top of the base, and a first support mechanism and a second support mechanism are provided between the base and the vertical support fixing mechanism, and an angle support fixing mechanism is provided on the side of the vertical support fixing mechanism. The base is provided with an adjustable stabilizing mechanism at its bottom. The adjustable stabilizing mechanism includes a sleeve, a rotating rod, an anchor rod, a gear, and a rotating disk. Sleeves are equidistantly arranged at the bottom of the inner wall of the base, and the sleeves are rotatably connected to the bottom of the inner wall of the base through bearings. Gears are fixedly installed on the outer side of each sleeve, and adjacent gears are meshed with each other. The inner wall of the sleeve is provided with an internal thread, and the rotating rod is connected to the internal thread of the sleeve. The end of the rotating rod passes through the bottom of the base. The top of the sleeve at one end inside the base passes through the top of the base and is fixedly installed with a rotating disk. The end of the rotating rod located outside the base is fixedly connected to an anchor rod. The vertical support fixing mechanism includes a vertical plate and a lifting plate. The vertical plate is fixedly installed at one end of the top of the base, and a right-angle steel plate is provided between the base and the vertical plate. The right-angle steel plate is fixedly connected to the base and the vertical plate by fixing bolts. The lifting plate is slidably connected inside the vertical plate, and the end of the lifting plate passes through the vertical plate.

[0005] Preferably, the first support mechanism includes a support rod and a sliding rod. A rotating rod is rotatably connected inside the lifting plate, and a worm gear is fixedly installed on the outer side of the bottom end of the rotating rod. A worm is rotatably connected to the bottom end of the inner wall of the lifting plate. The worm meshes with the worm gear. The end of the worm passes through the lifting plate. A lifting slider is slidably connected to the top end inside the lifting plate. A vertical lifting groove is opened on the side wall of the lifting plate, and the end of the lifting slider passes through the lifting groove. The base is provided with mounting blocks at the end away from the vertical plate and at the top of the lifting plate. The end of the lifting slider located outside the lifting plate is fixed to the mounting block. The base is fixedly connected to the mounting block on it. A support rod is rotatably connected inside the mounting block at the top of the base, and a sliding rod is slidably connected inside the support rod. The end of the sliding rod is rotatably connected inside the mounting block on the lifting plate.

[0006] Preferably, the angle support fixing mechanism includes a horizontal plate, a connecting plate, a support plate, an adjusting plate, and a moving block. The top of the base is fixedly installed on both sides of the vertical plate, and a support plate is rotatably connected between the two connecting plates. The top of the lifting plate is fixedly installed with a horizontal plate, and the bottom of the horizontal plate is symmetrically provided with sliding grooves, and a moving block is slidably connected in the sliding groove. The end of the adjusting plate is rotatably connected between the two moving blocks.

[0007] Preferably, a sliding plate is slidably connected inside the horizontal plate, and the tops of the two movable blocks extend into the horizontal plate and are fixedly connected to the sliding plate. The top of the sliding plate has a groove, and a positioning plate is provided in the groove. The positioning plate is slidably connected to the sliding plate in the vertical direction. The top of the horizontal plate has a sliding groove, and a threaded rod is slidably connected in the sliding groove. The top of the positioning plate has a vertical threaded hole, and the threaded rod is threadedly connected to the positioning plate. The bottom of the threaded rod is rotatably connected to the bottom of the inner wall of the sliding plate.

[0008] Preferably, the top of the inner wall of the horizontal plate is provided with conical toothed grooves at equal intervals, the top of the positioning plate is provided with multiple conical teeth, the conical teeth on the top of the positioning plate are engaged in the conical toothed grooves in the horizontal plate, and the moving slide corresponds to the length of the two inner walls at equal intervals with the diameter of the threaded rod.

[0009] Preferably, the corresponding two side walls of the vertical plate are rotatably connected to reinforcing rods via rotating shafts, and the ends of the reinforcing rods are provided with slots. The corresponding two side walls of the support plate are provided with reinforcing clamps that cooperate with the slots, and the reinforcing clamps are engaged in the slots at the ends of the reinforcing rods.

[0010] Preferably, the sliding rod has equidistant positioning holes on its side wall, the top of the support rod has a fixing pin, and the fixing pin is inserted into the positioning hole. The second support mechanism includes a fixing block and a fixing rod. The top of the base and the top of the vertical plate are both fixedly installed with fixing blocks, and a fixing rod is fixedly installed between the two fixing blocks.

[0011] Preferably, the bottom end of the anchor rod is tapered, and barbs are provided at equal intervals on the outer side of the anchor rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are: This invention rotates the gears connected to the rotating disk, and the sleeve rotates through the meshing of multiple gears. The length of the rotating rod outside the base can be adjusted by the threaded connection between the rotating rod and the sleeve, thereby controlling the depth of the anchor bolt. This allows the device to adjust the depth of the anchor bolt according to the conditions of the foundation pit, thus ensuring the stability of the foundation pit support. The present invention ensures the stability of the foundation pit support by fixing the fixed rod between the base and the vertical plate. The vertical height of the foundation pit support can be adjusted as needed by raising and lowering the lifting plate, thereby adapting to higher support and realizing height adjustment. The support rod and sliding rod between the base and the lifting plate can play a secondary support role, ensuring the stability of the entire foundation pit support. This invention allows for angle adjustment of the support plate by rotating the support plate and adjustment plate at the bottom of the vertical plate, thereby enabling support for foundation pits with a certain slope. During adjustment, simply rotate the threaded rod to disengage the positioning plate from the top of the inner wall of the horizontal plate. At this point, the moving block can be slid laterally freely. After adjusting the support plate to adapt to the slope of the foundation pit, rotate the threaded rod in the opposite direction to bring the positioning plate into contact with the top of the inner wall of the horizontal plate, fixing the position of the moving block and ensuring its stability. This invention is suitable for supporting foundation pits with slopes, avoiding the rigidity and poor adjustability of previous foundation pit support structures, increasing its application range, and facilitating its promotion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is an enlarged structural diagram of point A in the present invention; Figure 4 This is an enlarged structural schematic diagram of section B of the present invention; Figure 5 This is a schematic diagram of the internal connection structure of the base of the present invention; Figure 6 This is an enlarged structural diagram of point C in the present invention; Figure 7 This is a schematic diagram of the bottom structure of the horizontal plate of the present invention; Figure 8 This is a schematic diagram of the overall structure of the present invention.

[0014] In the diagram: 1. Base; 2. Vertical support and fixing mechanism; 3. Angle support and fixing mechanism; 4. Adjustable stabilizing mechanism; 5. First support mechanism; 6. Second support mechanism; 7. Vertical plate; 8. Lifting plate; 9. Rotating rod; 10. Worm gear; 11. Worm; 12. Lifting slider; 13. Mounting block; 14. Support rod; 15. Sliding rod; 16. Positioning hole; 17. Fixing pin; 18. Lifting slide; 19. Fixing block; 20. Fixing rod; 21. Right-angle steel plate; 22. Sleeve; 23. Rotating rod; 24. Anchor rod; 25. Gear; 26. Rotating disk; 27. Horizontal plate; 28. Connecting plate; 29. ​​Support plate; 30. Adjusting plate; 31. Moving block; 32. Sliding plate; 33. Positioning plate; 34. Threaded rod; 35. Moving slide; 36. Sliding groove; 37. Reinforcing rod; 38. Reinforcing clamp rod. Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figure 1-8 The present invention provides a technical solution: an adjustable foundation pit support mechanism, including a base 1, a vertical support fixing mechanism 2, an angle support fixing mechanism 3, and an adjustable stabilizing mechanism 4. The vertical support fixing mechanism 2 is provided at one end of the top of the base 1, and a first support mechanism 5 and a second support mechanism 6 are provided between the base 1 and the vertical support fixing mechanism 2. The angle support fixing mechanism 3 is provided on the side of the vertical support fixing mechanism 2. The support effect is enhanced by the provision of the first support mechanism 5 and the second support mechanism 6, thus ensuring the stability of the foundation pit support. An adjustable stabilizing mechanism 4 is provided at the bottom of the base 1. The adjustable stabilizing mechanism 4 includes a sleeve 22, a rotating rod 23, an anchor rod 24, a gear 25, and a rotating disk 26. Sleeves 22 are equidistantly arranged at the bottom of the inner wall of the base 1, and the sleeves 22 are rotatably connected to the bottom of the inner wall of the base 1 via bearings. Gears 25 are fixedly installed on the outer side of each sleeve 22, and adjacent gears 25 are meshed with each other. The inner wall of the sleeve 22 is provided with internal threads, and the rotating rod 23 is connected to the internal threads of the sleeve 22. The end of the rotating rod 23 passes through the base 1. At the bottom of the base 1, the top of the sleeve 22 at one end of the base 1 passes through the top of the base 1 and is fixedly installed with a rotating disk 26. The end of the rotating rod 23 located outside the base 1 is fixedly connected to an anchor rod 24. The depth of the anchor rod 24 is adjusted according to the looseness of the soil in the foundation pit. When the soil is relatively loose, the anchor rod 24 needs to be buried deeper. Rotating the rotating disk 26 causes the sleeve 22 to rotate. Through the threaded connection between the rotating rod 23 and the sleeve 22, the sleeve 22 moves down, thereby causing the anchor rod 24 to move down and be buried deeper, ensuring the stable support of the foundation pit and having strong adjustability. The rotation of the rotating disk 26 causes the gear 25 connected to it to rotate. Through the meshing connection between multiple gears 25, the sleeve 22 rotates. The length of the rotating rod 23 outside the base 1 can be adjusted through the threaded connection between the rotating rod 23 and the sleeve 22, thereby controlling the embedment depth of the anchor rod 24. This allows the device to adjust the embedment depth of the anchor rod 24 according to the condition of the foundation pit, thus ensuring the stability of the foundation pit support. The vertical support fixing mechanism 2 includes a vertical plate 7 and a lifting plate 8. The vertical plate 7 is fixedly installed at one end of the top of the base 1, and a right-angle steel plate 21 is provided between the base 1 and the vertical plate 7. The right-angle steel plate 21 is fixedly connected to the base 1 and the vertical plate 7 by fixing bolts. The lifting plate 8 is slidably connected inside the vertical plate 7, and the end of the lifting plate 8 passes through the vertical plate 7, which facilitates vertical height adjustment and can effectively support and protect the soil that has become loose.

[0017] The first support mechanism 5 includes a support rod 14 and a sliding rod 15. A rotating rod 9 is rotatably connected inside the lifting plate 8, and a worm gear 10 is fixedly installed on the outer side of the bottom end of the rotating rod 9. A worm 11 is rotatably connected to the bottom end of the inner wall of the lifting plate 8. The worm 11 is meshed with the worm gear 10. The end of the worm 11 passes through the lifting plate 8. A lifting slider 12 is slidably connected to the top end inside the lifting plate 8. A vertical lifting groove 18 is opened on the side wall of the lifting plate 8. The end of the lifting slider 12 passes through the lifting groove 18. By rotating the worm 11, the worm gear 10 can be controlled to rotate, thereby causing the rotating rod 9 to rotate. The lifting slider 12 is raised and lowered by the threaded connection between the lifting slider 12 and the rotating rod 9. Mounting blocks 13 are provided at the end of the base 1 away from the vertical plate 7 and at the top of the lifting plate 8. The end of the lifting slider 12 located outside the lifting plate 8 is fixed to the mounting block 13. The base 1 is fixedly connected to the mounting block 13 on it. A support rod 14 is rotatably connected inside the mounting block 13 at the top of the base 1, and a sliding rod 15 is slidably connected inside the support rod 14. The end of the sliding rod 15 is rotatably connected inside the mounting block 13 on the lifting plate 8. The lifting and lowering of the lifting slider 12 can drive the lifting and lowering of the mounting block 13, thereby adjusting the angle between the support rod 14 and the sliding rod 15 and the base 1 to achieve a better support effect.

[0018] The angle support fixing mechanism 3 includes a horizontal plate 27, a connecting plate 28, a support plate 29, an adjusting plate 30, and a moving block 31. The top of the base 1 is fixedly installed with connecting plates 28 on both sides of the vertical plate 7, and the support plate 29 is rotatably connected between the two connecting plates 28. The top of the lifting plate 8 is fixedly installed with a horizontal plate 27, and the bottom of the horizontal plate 27 is symmetrically provided with sliding grooves 36, and the moving block 31 is slidably connected in the sliding grooves 36. The end of the adjusting plate 30 is rotatably connected between the two moving blocks 31. When it is necessary to support the slope, the moving block 31 is also adjusted to a certain position so that the support plate 29 is adapted to the slope support, and then reinforced by the reinforcing rod 37, thereby achieving angled support.

[0019] A sliding plate 32 is slidably connected within the horizontal plate 27. The tops of the two moving blocks 31 extend into the horizontal plate 27 and are fixedly connected to the sliding plate 32. A groove is provided on the top of the sliding plate 32, and a positioning plate 33 is provided within the groove. The positioning plate 33 is slidably connected within the sliding plate 32 in the vertical direction. A sliding groove 35 is provided on the top of the horizontal plate 27, and a threaded rod 34 is slidably connected within the sliding groove 35. A threaded hole is provided on the top of the positioning plate 33 in the vertical direction. The threaded rod 34 is threadedly connected within the positioning plate 33, and the bottom of the threaded rod 34 is rotatably connected to the bottom of the inner wall of the sliding plate 32. By rotating the threaded rod 34, the raising and lowering of the positioning plate 33 can be controlled, thereby controlling the sliding or fixing mode of the sliding plate 31.

[0020] The top of the inner wall of the horizontal plate 27 is provided with conical toothed grooves at equal intervals, and the top of the positioning plate 33 is provided with multiple conical teeth. The conical teeth on the top of the positioning plate 33 are engaged in the conical toothed grooves in the horizontal plate 27. The moving slide 35 corresponds to the diameter of the threaded rod 34 at equal intervals between the lengths of the two inner walls. The setting of the conical teeth and the conical toothed grooves in the horizontal plate 27 ensures the tightness and stability of the connection.

[0021] The corresponding two side walls of the vertical plate 7 are rotatably connected to the reinforcing rods 37 via rotating shafts, and the ends of the reinforcing rods 37 are provided with slots. The corresponding two side walls of the support plate 29 are provided with reinforcing clamping rods 38 that cooperate with the slots. The reinforcing clamping rods 38 are engaged in the slots at the ends of the reinforcing rods 37 to facilitate the fixation of the position of the support plate 29.

[0022] The sliding rod 15 has equidistant positioning holes 16 on its side wall. The top of the support rod 14 is provided with a fixing pin 17, which is inserted into the positioning hole 16. The second support mechanism 6 includes a fixing block 19 and a fixing rod 20. The top of the base 1 and the top of the vertical plate 7 are both fixedly installed with fixing blocks 19, and a fixing rod 20 is fixedly installed between the two fixing blocks 19 to ensure the support effect.

[0023] The bottom end of the anchor rod 24 is tapered, and barbs are provided at equal intervals on the outer side of the anchor rod 24 to facilitate stability after burying.

[0024] Specifically, when using this invention, the depth of the anchor rod 24 is adjusted according to the looseness of the soil in the foundation pit. When the soil is relatively loose, the anchor rod 24 needs to be buried deeper. Rotating the rotating disk 26 causes the sleeve 22 to rotate, and the sleeve 22 is moved downward through the threaded connection between the rotating rod 23 and the sleeve 22, thereby causing the anchor rod 24 to move downward and be buried deeper, ensuring the stable support of the foundation pit. When vertical support is required (such as...), Figure 8 Rotate the threaded rod 34, and through the threaded connection between the positioning plate 33 and the threaded rod 34, move the positioning plate 33 down to disengage from the conical tooth groove at the top of the inner wall of the horizontal plate 27. Then slide the moving block 31 to the lifting plate 8, and then control the positioning plate 33 to move up, so that the conical teeth on it are engaged in the conical tooth groove at the top of the inner wall of the horizontal plate 27. At this time, the support plate 29 and the adjusting plate 30 are in a vertical state. Rotate the reinforcing rod 37 so that the slot at its end is engaged with the outside of the reinforcing rod 38, which strengthens the fixation of the support plate 29. At this time, the support plate 29 and the vertical plate 7 simultaneously play the role of vertical support. The fixing rod 20 plays the role of primary support, and the support rod 14 and the sliding rod 15 play the role of reinforcing support, ensuring the stability of the foundation pit support. When it is necessary to support sloped areas (such as... Figure 1 and Figure 2 Similarly, adjust the moving block 31 to a certain position so that the support plate 29 is adapted to the slope support, and then reinforce it with the reinforcing rod 37 to achieve angled support.

[0025] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 limiting this invention.

[0026] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable foundation pit support mechanism, comprising a base (1), a vertical support fixing mechanism (2), an angle support fixing mechanism (3), and an adjustable stabilizing mechanism (4), characterized in that: A vertical support fixing mechanism (2) is provided at one end of the top of the base (1), and a first support mechanism (5) and a second support mechanism (6) are provided between the base (1) and the vertical support fixing mechanism (2). An angle support fixing mechanism (3) is provided on the side of the vertical support fixing mechanism (2). The bottom of the base (1) is provided with an adjustable stabilizing mechanism (4). The adjustable stabilizing mechanism (4) includes a sleeve (22), a rotating rod (23), an anchor rod (24), a gear (25), and a rotating disk (26). The bottom of the inner wall of the base (1) is provided with sleeves (22) at equal intervals. The sleeves (22) are rotatably connected to the bottom of the inner wall of the base (1) through bearings. Gears (25) are fixedly installed on the outer side of the sleeves (22). Adjacent gears (25) are meshed with each other. The inner wall of the sleeves (22) is provided with internal threads. The rotating rod (23) is connected to the internal threads of the sleeves (22). The end of the rotating rod (23) passes through the bottom of the base (1). The top of the sleeve (22) at one end inside the base (1) passes through the top of the base (1) and is fixedly installed with a rotating disk (26). The end of the rotating rod (23) located outside the base (1) is fixedly connected with an anchor rod (24). The vertical support fixing mechanism (2) includes a vertical plate (7) and a lifting plate (8). The vertical plate (7) is fixedly installed at one end of the top of the base (1), and a right angle steel plate (21) is provided between the base (1) and the vertical plate (7). The right angle steel plate (21) is fixedly connected to the base (1) and the vertical plate (7) by fixing bolts. The lifting plate (8) is slidably connected inside the vertical plate (7), and the end of the lifting plate (8) passes through the vertical plate (7). The first support mechanism (5) includes a support rod (14) and a sliding rod (15). The lifting plate (8) is rotatably connected to a rotating rod (9), and a worm gear (10) is fixedly installed on the outer side of the bottom end of the rotating rod (9). The bottom end of the inner wall of the lifting plate (8) is rotatably connected to a worm (11), which meshes with the worm gear (10). The end of the worm (11) passes through the lifting plate (8). The top end of the lifting plate (8) is slidably connected to a lifting slider (12). The side wall of the lifting plate (8) is provided with a vertical lifting groove (18), and the end of the lifting slider (12) passes through the lifting groove (18). The base (1) is provided with mounting blocks (13) at the end away from the vertical plate (7) and at the top of the lifting plate (8). The end of the lifting slider (12) located outside the lifting plate (8) is fixed to the mounting block (13). The base (1) is fixedly connected to the mounting block (13) on it. A support rod (14) is rotatably connected inside the mounting block (13) at the top of the base (1), and a sliding rod (15) is slidably connected inside the support rod (14). The end of the sliding rod (15) is rotatably connected inside the mounting block (13) on the lifting plate (8). The angle support fixing mechanism (3) The base (1) includes a horizontal plate (27), a connecting plate (28), a support plate (29), an adjusting plate (30), and a moving block (31). The top of the base (1) is fixedly installed with connecting plates (28) on both sides of the vertical plate (7), and a support plate (29) is rotatably connected between the two connecting plates (28). The top of the lifting plate (8) is fixedly installed with a horizontal plate (27), and a sliding groove (36) is symmetrically opened at the bottom of the horizontal plate (27). A moving block (31) is slidably connected in the sliding groove (36). The end of the adjusting plate (30) is rotatably connected between the two moving blocks (31).

2. The adjustable foundation pit support mechanism according to claim 1, characterized in that: A sliding plate (32) is slidably connected inside the horizontal plate (27). The tops of the two moving blocks (31) extend into the horizontal plate (27) and are fixedly connected to the sliding plate (32). A groove is provided on the top of the sliding plate (32), and a positioning plate (33) is provided in the groove. The positioning plate (33) is slidably connected to the sliding plate (32) in the vertical direction. A sliding groove (35) is provided on the top of the horizontal plate (27), and a threaded rod (34) is slidably connected in the sliding groove (35). A threaded hole is provided on the top of the positioning plate (33) in the vertical direction. The threaded rod (34) is threadedly connected to the positioning plate (33), and the bottom of the threaded rod (34) is rotatably connected to the bottom of the inner wall of the sliding plate (32).

3. The adjustable foundation pit support mechanism according to claim 2, characterized in that: The top of the inner wall of the horizontal plate (27) is provided with conical toothed grooves at equal intervals. The top of the positioning plate (33) is provided with multiple conical teeth. The conical teeth on the top of the positioning plate (33) are engaged in the conical toothed grooves in the horizontal plate (27). The length of the moving slide (35) corresponding to the two inner walls is equal to the diameter of the threaded rod (34).

4. The adjustable foundation pit support mechanism according to claim 1, characterized in that: The vertical plate (7) has a reinforcing rod (37) rotatably connected to the corresponding two side walls via a rotating shaft, and the end of the reinforcing rod (37) is provided with a slot. The corresponding two side walls of the support plate (29) are provided with reinforcing rods (38) that cooperate with the slots, and the reinforcing rods (38) are engaged in the slots at the end of the reinforcing rods (37).

5. The adjustable foundation pit support mechanism according to claim 1, characterized in that: The sliding rod (15) has equidistant positioning holes (16) on its side wall. The top of the support rod (14) is provided with a fixing pin (17), which is inserted into the positioning hole (16). The second support mechanism (6) includes a fixing block (19) and a fixing rod (20). The top of the base (1) and the top of the vertical plate (7) are both fixedly installed with fixing blocks (19), and a fixing rod (20) is fixedly installed between the two fixing blocks (19).

6. The adjustable foundation pit support mechanism according to claim 1, characterized in that: The bottom end of the anchor rod (24) is tapered, and barbs are provided at equal intervals on the outer side of the anchor rod (24).

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