Building foundation pit protection device

Abstract

The application relates to a house building foundation pit protection device, which comprises a plurality of steel sheet piles for supporting the inner wall of the foundation pit, the steel sheet pile comprises outward supporting surfaces and inward supporting surfaces arranged oppositely; further comprising a transverse supporting frame fixedly installed on the inner wall of the foundation pit, the transverse supporting frame is used for being in contact with the outward supporting surfaces of the steel sheet pile; a supporting screw rod towards the inward supporting surfaces of the steel sheet pile is threadedly connected to the transverse supporting frame, the end of the supporting screw rod is rotatably sleeved with a supporting seat, the supporting seat is in contact with the inward supporting surfaces of the respective opposite steel sheet piles; the transverse supporting frames are arranged in the height direction of the steel sheet piles in sequence and at intervals. The application has the advantages of further improving the stability and reliability of the steel sheet pile, enhancing the connection reliability between the steel sheet piles, and improving the supporting effect on the inner wall of the foundation pit.

Description

Technical Field

[0001] This application relates to the technical field of foundation pit construction equipment, and in particular to a building foundation pit protection device. Background Technology

[0002] Currently, foundation pit protection devices refer to various physical protective measures and equipment installed during building construction to ensure the safety of foundation pit excavation and protect workers and the surrounding environment from harm. These devices are mainly used to prevent accidents such as soil collapse and landslides, and to provide a safe working environment.

[0003] In related technologies, high-strength U-shaped steel sheet piles are commonly used to support the inner walls of foundation pits. U-shaped steel sheet piles possess good bending strength and bearing capacity. They are typically installed and fixed to the bottom of the foundation pit from top to bottom using equipment such as vibratory hammers or static pile drivers. During the piling process, continuous adjustments are necessary to maintain the verticality of the sheet piles and prevent tilting that could lead to structural instability. However, due to the relatively soft geology at the bottom of some foundation pits, the stability and reliability of the individual U-shaped steel sheet piles installed at the bottom of the pit are poor, which can easily lead to misalignment between the piles. Therefore, the structural strength of these piles needs further improvement. Utility Model Content

[0004] This application provides a building foundation pit protection device that can further improve the stability and reliability of steel sheet piles and enhance the connection reliability between individual steel sheet piles, thereby further improving the support effect on the inner wall of the foundation pit.

[0005] The technical solution for a building foundation pit protection device provided in this application is as follows:

[0006] A foundation pit protection device for building construction includes multiple sheet piles for supporting the inner wall of the foundation pit. Each sheet pile has an outer support surface and an inner support surface arranged opposite to each other. It also includes a transverse support frame for fixed installation on the inner wall of the foundation pit. The transverse support frame is in contact with the outer support surface of the sheet pile. A support screw is threaded onto the transverse support frame, facing the inner support surface of the sheet pile. A support seat is rotatably fitted at the end of the support screw, and the support seat abuts against the corresponding inner support surface of the sheet pile. The transverse support frames are arranged at intervals along the height direction of the sheet piles, and each transverse support frame is parallel to the others.

[0007] Preferably, a sliding groove is provided through the transverse support frame, and an adjusting seat is slidably arranged in the sliding groove along the length direction of the transverse support frame. A fixed plate located outside the sliding groove is fixedly arranged on one side of the adjusting seat, and a movable plate located outside the sliding groove is detachably installed on the side of the adjusting seat opposite to the fixed plate. An internal threaded hole is provided through the adjusting seat, and a support screw passes through the adjusting seat and is threadedly connected to the internal threaded hole.

[0008] Preferably, the adjusting seat has a threaded post on its side wall facing the movable plate, the movable plate passes through the threaded post, and the end of the threaded post is threaded with a fastening nut for tightening and fixing the movable plate to the adjusting seat.

[0009] Preferably, multiple sets of positioning frames are provided on the outer support surface of the sheet pile, and each set of positioning frames is arranged sequentially at intervals along the length of the sheet pile; the positioning frames in the same set are arranged opposite each other, and a clamping groove is formed between the oppositely arranged positioning frames, and the transverse support frame is inserted and limited in its respective clamping groove.

[0010] Preferably, the positioning frame is provided with a clearance groove facing the clamping groove, a limiting member is movably disposed in the clearance groove, and a limiting spring is also provided on the positioning frame, the limiting spring and the limiting member abut against each other; the limiting spring is used to push the limiting member into the clamping groove, and the limiting member is used to prevent the transverse support frame from disengaging from the clamping groove.

[0011] Preferably, an installation cylinder is provided on the outer side wall of the positioning frame away from the clamping groove, and the limiting spring is disposed inside the installation cylinder; a guide rod is provided on the limiting member, and the guide rod is movably disposed inside the installation cylinder; one end of the limiting spring abuts against the guide rod, and the other end of the limiting spring abuts against the inner side wall of the installation cylinder.

[0012] Preferably, a guide slope is formed on the side wall of the limiting member away from the outer support surface of the sheet pile, and the guide slope is used to guide the transverse support frame to pass over the limiting member.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] By using transverse support frames to support and limit the outer support surface of the sheet piles, the stability and reliability of the sheet piles can be further improved, making the sheet piles less prone to displacement, further enhancing the connection reliability between the individual sheet piles, and further improving the support effect on the inner wall of the foundation pit.

[0015] The support screws further enhance the support effect on the inner support surface of the sheet pile, thereby increasing the stability and compressive strength of the sheet pile. The support seat increases the contact area between the end of the support screw and the inner support surface of the sheet pile, further improving the support effect of the support screw on the inner support surface of the sheet pile.

[0016] With the limiting component in place, the transverse support frame can be effectively prevented from detaching from the clamping groove, further improving the installation reliability and stability of the transverse support frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the embodiment of this application installed in the foundation pit;

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application;

[0019] Figure 3 This is an exploded view showing a portion of the structure of the adjustment seat;

[0020] Figure 4 This is an exploded view of a portion of the positioning frame's structure.

[0021] Explanation of reference numerals in the attached drawings: 1. Sheet pile; 2. Lateral support frame; 20. Slide groove; 200. Anchor bolt; 3. Support bolt; 30. Support seat; 4. Adjusting seat; 40. Fixing plate; 41. Movable plate; 42. Internal threaded hole; 43. Threaded column; 44. Fastening nut; 5. Positioning frame; 50. Clamping groove; 51. Relief groove; 52. Limiting component; 53. Limiting spring; 54. Mounting cylinder; 55. Guide rod; 56. Guide slope. Detailed Implementation

[0022] The present application will be further described in detail below with reference to the accompanying drawings.

[0023] This application discloses a building foundation pit protection device.

[0024] Reference Figure 1 , Figure 2 The foundation pit protection device includes multiple U-shaped steel sheet piles 1 for supporting the inner wall of the foundation pit. Each steel sheet pile 1 has an outer support surface and an inner support surface arranged opposite to each other, and the steel sheet piles 1 are inserted alternately in the foundation pit. It also includes multiple transverse support frames 2 for fixed installation on the inner wall of the foundation pit. Each transverse support frame 2 is arranged at intervals along the height direction of the steel sheet piles 1. The transverse support frames 2 are horizontally arranged, and anchor rods 200 are installed at both ends of each transverse support frame 2, which are then fixedly installed on the inner wall of the foundation pit by the anchor rods 200.

[0025] like Figure 2 , Figure 3As shown, the transverse support frame 2 is used to contact the outer support surface of the sheet pile 1. The transverse support frame 2 supports and limits the outer support surface of the sheet pile 1, thereby further improving the stability and reliability of the sheet pile 1, making it less prone to displacement, and further enhancing the connection reliability between the individual sheet piles 1. The transverse support frame 2 is also equipped with multiple support screws 3 facing the inner support surface of the sheet pile 1. The ends of the support screws 3 are rotatably fitted with support seats 30 facing the inner support surface of the sheet pile 1. The support seats 30 and the support screws 3 are coaxially arranged. The support seats 30 increase the contact area between the ends of the support screws 3 and the inner support surface of the sheet pile 1, thereby further improving the supporting effect of the support screws 3 on the inner support surface of the sheet pile 1.

[0026] like Figure 2 , Figure 3 As shown, a sliding groove 20 extends through the transverse support frame 2, with its length extending along the length direction of the transverse support frame 2. Multiple adjusting seats 4 are slidably arranged within the sliding groove 20 along its length. A fixed plate 40 is fixedly installed on the side of the adjusting seat 4 facing the inner support surface of the sheet pile 1, located outside the sliding groove 20. The width of the fixed plate 40 is greater than the width of the sliding groove 20. A movable plate 41 is detachably installed on the side of the adjusting seat 4 opposite to the fixed plate 40, located outside the sliding groove 20. The movable plate 41 and the fixed plate 40 are symmetrically arranged on the front and rear sides of the adjusting seat 4.

[0027] like Figure 2 , Figure 3 As shown, four threaded posts 43 are fixedly installed on the side wall of the adjusting seat 4 facing the movable plate 41, and the movable plate 41 passes through the outside of each threaded post 43. The ends of the threaded posts 43 are threadedly connected to fastening nuts 44 for tightening and fixing the movable plate 41 to the adjusting seat 4. After tightening, the movable plate 41 abuts against the outer side wall of the transverse support frame 2.

[0028] like Figure 2 , Figure 3 As shown, an internally threaded hole 42 passes through the central axis of the adjusting seat 4. The supporting screw 3 passes through the internally threaded hole 42 and is threadedly connected to the adjusting seat 4. The supporting screw 3 is perpendicular to the inner support surface of the sheet pile 1. By rotating the supporting screw 3, the support seat 30 and the inner support surface of the sheet pile 1 come into contact with each other. At this time, under the support of the supporting screw 3, the support effect on the inner support surface of the sheet pile 1 can be further improved, thereby enhancing the stability and compressive strength of the sheet pile 1.

[0029] like Figure 3 , Figure 4As shown, multiple sets of positioning frames 5 are fixedly installed on the outer support surface of the sheet pile 1, and each set of positioning frames 5 is arranged sequentially at intervals along the length of the sheet pile 1. Two positioning frames 5 in the same set are arranged vertically opposite each other, and a clamping groove 50 is formed between the two positioning frames 5 that are arranged opposite each other for installing the transverse support frame 2 on the outside of the sheet pile 1. The transverse support frame 2 is inserted and limited in its respective clamping groove 50.

[0030] like Figure 3 , Figure 4 As shown, the positioning frame 5 is provided with a clearance groove 51 facing the clamping groove 50, and the clearance groove 51 is interconnected with its respective clamping groove 50. A limiting member 52 is movably provided in the clearance groove 51 along the height direction of the sheet pile 1. An installation cylinder 54 is fixedly installed on the outer wall of the positioning frame 5 away from the clamping groove 50, and the length of the installation cylinder 54 extends along the height direction of the sheet pile 1. A limiting spring 53 is provided in the installation cylinder 54, which extends and retracts along the length direction of the installation cylinder 54. A guide rod 55 is fixedly provided on the limiting member 52, which moves along the height direction of the sheet pile 1 and passes through the positioning frame 5. The end of the guide rod 55 away from the limiting member 52 is inserted into and movably limited in its respective installation cylinder 54.

[0031] like Figure 3 , Figure 4 As shown, one end of the limiting spring 53 abuts against the bottom wall of the guide rod 55, and the other end of the limiting spring 53 abuts against the bottom inner wall of the mounting cylinder 54. In its natural state, the limiting spring 53 is used to push the limiting member 52 into its respective clamping groove 50. The limiting member 52 inserted into the clamping groove 50 is located on the insertion path of the transverse support frame 2. When the transverse support frame 2 is smoothly inserted into the clamping groove 50, the limiting member 52 located in the clamping groove 50 will contact the outer wall of the transverse support frame 2 away from the sheet pile 1. At this time, under the limiting of the limiting member 52, the transverse support frame 2 can be effectively prevented from detaching from the clamping groove 50, further improving the installation reliability and stability of the transverse support frame 2.

[0032] like Figure 3 , Figure 4 As shown, a guide ramp 56 is formed on the side wall of the limiting member 52 away from the outer support surface of the sheet pile 1. The guide ramp 56 is used to guide the transverse support frame 2 over the limiting member 52. When installing the transverse support frame 2, by pushing the transverse support frame 2 into the clamping groove 50 along the guide ramp 56, the transverse support frame 2 will push the limiting member 52 into the relief groove 51 under the guidance of the guide ramp 56. At this time, the limiting spring 53 will be in a compressed state. After the transverse support frame 2 successfully passes the limiting member 52, the limiting member 52 will be lifted and reset under the elastic force of the limiting spring 53. At this time, the limiting member 52 can initially limit the transverse support frame 2 in the clamping groove 50, which facilitates the subsequent fixing of the transverse support frame 2.

[0033] The implementation principle is as follows: the transverse support frame 2 is used to contact the outer support surface of the sheet pile 1. The transverse support frame 2 supports and limits the outer support surface of the sheet pile 1, thereby further improving the stability and reliability of the sheet pile 1, making the sheet pile 1 less prone to displacement, and further enhancing the connection reliability between the individual sheet piles 1.

[0034] By rotating the support screw 3, the support seat 30 comes into contact with the inner support surface of the sheet pile 1. At this point, the support effect of the support screw 3 on the inner support surface of the sheet pile 1 is further enhanced, thus strengthening the stability and compressive strength of the sheet pile 1. The support seat 30 increases the contact area between the end of the support screw 3 and the inner support surface of the sheet pile 1, thereby further improving the support effect of the support screw 3 on the inner support surface of the sheet pile 1. Under the limiting effect of the limiting member 52, the transverse support frame 2 can be effectively prevented from detaching from the clamping groove 50, further improving the installation reliability and stability of the transverse support frame 2.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A building foundation pit protection device, comprising a plurality of sheet piles (1) for supporting the inner wall of the foundation pit, wherein each sheet pile (1) includes an outer support surface and an inner support surface arranged opposite to each other; characterized in that: It also includes a transverse support frame (2) for fixed installation on the inner wall of the foundation pit. The transverse support frame (2) is used to contact the outer support surface of the sheet pile (1). The transverse support frame (2) is also threaded with a support screw (3) facing the inner support surface of the sheet pile (1). The end of the support screw (3) is rotatably sleeved with a support seat (30). The support seat (30) abuts against the inner support surface of the sheet pile (1) on its respective side. The transverse support frames (2) are arranged sequentially at intervals along the height direction of the sheet pile (1), and each transverse support frame (2) is parallel to the others.

2. The building foundation pit protection device according to claim 1, characterized in that: A sliding groove (20) is provided through the transverse support frame (2). An adjusting seat (4) is slidably arranged in the sliding groove (20) along the length direction of the transverse support frame (2). A fixed plate (40) located outside the sliding groove (20) is fixedly arranged on one side of the adjusting seat (4). A movable plate (41) located outside the sliding groove (20) is detachably installed on the side of the adjusting seat (4) away from the fixed plate (40). An internal threaded hole (42) is provided through the adjusting seat (4). A support screw (3) is inserted in the adjusting seat (4) and is threadedly connected to the internal threaded hole (42).

3. The building foundation pit protection device according to claim 2, characterized in that: The adjusting seat (4) has a threaded post (43) on the side wall facing the movable plate (41). The movable plate (41) passes through the outside of the threaded post (43). The end of the threaded post (43) is threaded with a fastening nut (44) for tightening and fixing the movable plate (41) on the adjusting seat (4).

4. The building foundation pit protection device according to claim 1, characterized in that: Multiple sets of positioning frames (5) are provided on the outer support surface of the sheet pile (1). Each set of positioning frames (5) is arranged in sequence at intervals along the length direction of the sheet pile (1). The positioning frames (5) in the same set are arranged opposite to each other, and clamping grooves (50) are formed between the positioning frames (5) arranged opposite to each other. The transverse support frame (2) is inserted and limited in its respective clamping groove (50).

5. The building foundation pit protection device according to claim 4, characterized in that: The positioning frame (5) is provided with a clearance groove (51) facing the clamping groove (50). A limiting member (52) is movably arranged in the clearance groove (51). The positioning frame (5) is also provided with a limiting spring (53). The limiting spring (53) and the limiting member (52) abut against each other. The limiting spring (53) is used to push the limiting member (52) into the clamping groove (50). The limiting member (52) is used to restrict the transverse support frame (2) from disengaging from the clamping groove (50).

6. The building foundation pit protection device according to claim 5, characterized in that: The positioning frame (5) has an installation cylinder (54) on its outer side wall away from the clamping groove (50), and the limiting spring (53) is installed inside the installation cylinder (54); the limiting member (52) has a guide rod (55) installed on it, and the guide rod (55) is movably installed inside the installation cylinder (54); one end of the limiting spring (53) abuts against the guide rod (55), and the other end of the limiting spring (53) abuts against the inner side wall of the installation cylinder (54).

7. The building foundation pit protection device according to claim 5, characterized in that: The limiting member (52) has a guide slope (56) formed on the side wall away from the outer support surface of the sheet pile (1). The guide slope (56) is used to guide the transverse support frame (2) to pass over the limiting member (52).

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