Pit wall supporting frame for building construction foundation pit

Abstract

The utility model discloses a pit wall supporting frame for a building construction foundation pit and relates to the field of supporting frames. The foundation pit supporting frame is mainly designed for solving the problems that the length of a supporting plate of an existing foundation pit supporting frame for building construction cannot be adjusted, and the supporting effect is reduced. The device comprises two movable plates, supporting plates are arranged on the two movable plates, clamping grooves are formed in the side faces of the supporting plates, the outer ends of convex plates are embedded in the clamping grooves, the two convex plates are connected with transmission plates, screws are arranged in the transmission plates, rotating rods are arranged at the inner ends of the screws, I-shaped columns are rotationally connected into the two rotating rods, and the two transmission plates are movably sleeved with middle plates. A rotating groove is formed in the middle of the upper surface of the middle plate, an embedding groove is formed in the side face of one rotating rod, a stud is rotationally installed in the other rotating rod, an embedding rod is installed on the stud in a threaded mode, and the head of the stud is exposed out of the rotating rods. The supporting device has the beneficial effect that the supporting requirements under different pit wall conditions can be met.

Description

Technical Field

[0001] The utility model relates to the field of supporting frames, in particular to a pit wall supporting frame for a foundation pit in a building construction. Background Art

[0002] In the use of foundation pits for construction engineering, in order to ensure that the pit wall of the foundation pit does not collapse, a support frame is used for support. The patent with publication number CN218373901U discloses a foundation pit support frame for construction, including a support frame body, the support frame body includes a first support frame, a second support frame, a third support frame and a fourth support frame, the first support frame, the second support frame, the third support frame and the fourth support frame all include a bottom plate, a movable plate, a fixed column and a fixed plate, a plurality of fixed columns are evenly arranged at the bottom of the bottom plate, a movable plate is arranged at the top of the bottom plate, a fixed plate is arranged at the top of the movable plate, mounting holes are opened on the front and rear sides of the fixed plate, a first support frame is arranged on the inner side of the first support frame and the third support frame, a first support plate is arranged between the two first support frames, a second support frame is arranged on the inner side of the second support frame and the fourth support frame, and a second support plate is arranged between the two second support frames. The beneficial effects of the utility model are: it can improve the stability of the entire support frame, better support and protect the side walls of the foundation pit, and reduce the probability of foundation pits occurring during construction in the foundation pit.

[0003] However, it still has some shortcomings: the first support plate and the second support plate are used for cross support in the middle, and their lengths are fixed. In some spaces with uneven pit walls, different lengths of support are required. For example, the angle between the pit wall and the horizontal plane is not perpendicular and may be tilted. Although the movable plate can be rotated, the length of the support plate is fixed and cannot be adjusted, so that its supporting effect does not have the high efficiency of vertical compression at the beginning. Therefore, there are still some limitations in the use of it, and the supporting effect is reduced. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a pit wall support frame for construction foundation pits which can adapt to the support requirements under different pit wall conditions, so that the pit wall support frame still has high support when facing some inclined pit walls.

[0005] The purpose of the utility model is achieved as follows: it includes two movable plates, support plates are fixed on the inner walls of the two movable plates, and slots are provided on the sides of the other ends of the two support plates. It also includes two convex plates adapted to the slots, and the outer ends of the two convex plates (one end facing the support plates) are respectively embedded and installed in the slots of the two support plates, the inner ends of the two convex plates are fixedly connected to transmission plates, the interiors of the two transmission plates are threadedly connected with screws, the inner ends of the two screws extend from the two transmission plates respectively, and rotating rods are fixed to the inner ends of the two screws, and it also includes an I-shaped column, which is rotatably connected to the two rotating rods, that is, half of the I-shaped column is located in one rotating rod, and the other half of the I-shaped column is located in the other rotating rod, and the I-shaped column connects the two rotating rods together. An intermediate plate is movably sleeved on the outside of the two transmission plates, and a rotation groove is opened in the middle of the upper surface of the intermediate plate, the size of the rotation groove is adapted to the size of the two rotating rods, and the tops of the two rotating rods are exposed from the rotation groove; an engaging groove is opened on the side of one of the rotating rods facing the other rotating rod, and a stud is rotatably installed inside the other rotating rod, and an engaging rod is threadedly installed on the stud, and the head of the stud is exposed from the rotating rod, and the head of the stud is turned to rotate the stud, thereby driving the engaging rod to move, so that the engaging rod performs telescopic movement and is embedded in the engaging groove to complete support and fixation.

[0006] The shape of the engaging rod is a hexagonal prism, the shape of the engaging groove is matched with the shape of the engaging rod, and the thread directions of the two screw rods are arranged to be opposite.

[0007] The beneficial effects of the utility model are:

[0008] The driving plate is adjusted by the rotating rod driving the screw rod, and the support plate is controlled to be extended and retracted, so that it can be extended and retracted on one side, thereby adapting to the support requirements under different pit wall conditions, so that the overall device still has the purpose of high support when facing some inclined pit walls, thereby improving the overall practicality of the device;

[0009] The studs are used in conjunction with the interlocking rods to achieve synchronous fixation of the two rotating rods, so that the two support plates can be extended and retracted at the same time, so that when supporting some symmetrical pit walls, the purpose of rapid adjustment can be achieved, saving the overall adjustment time. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the three-dimensional assembly structure of the support plate and the middle plate of the utility model;

[0012] Figure 3 This is a schematic diagram of the cross-sectional structure of the middle plate of the utility model;

[0013] Figure 4It is a schematic diagram of the cross-sectional structure of the rotating rod of the utility model. DETAILED DESCRIPTION

[0014] Combine the following Figure 1-4 Further explain the utility model;

[0015] It includes two movable plates 1, support plates 2 are fixed on the inner walls of the two movable plates 1, and grooves 3 are provided on the side surfaces of the other ends of the two support plates. It also includes two convex plates 4 adapted to the grooves, and the outer ends of the two convex plates (the ends facing the support plates) are respectively embedded and installed in the grooves 3 of the two support plates, and the inner ends of the two convex plates are fixedly connected with transmission plates 5, and the interiors of the two transmission plates are threadedly connected with screw rods 6, and the inner ends of the two screw rods extend out from the two transmission plates respectively, and the inner ends of the two screw rods are fixed with rotating rods 7, and it also includes an I-shaped column 8, which is rotatably connected in the two rotating rods, that is, half of the I-shaped column is located in one rotating rod, and the other half of the I-shaped column is located in the other rotating rod, and the I-shaped column connects the two rotating rods together. An intermediate plate 9 is movably sleeved on the outside of the two transmission plates, and a rotation groove is opened in the middle of the upper surface of the intermediate plate, the size of which is adapted to the size of the two rotating rods, and the tops of the two rotating rods are exposed from the rotation groove; an engaging groove 10 is opened on the side of one of the rotating rods facing the other rotating rod, and a stud 11 is rotatably installed inside the other rotating rod, and an engaging rod 12 is threadedly installed on the stud, and the head of the stud is exposed from the rotating rod. The head of the stud is turned to rotate the stud, thereby driving the engaging rod to move, so that the engaging rod performs a telescopic movement and is embedded in the engaging groove to complete the support and fixation.

[0016] The shape of the engaging rod is a hexagonal prism, the shape of the engaging groove is matched with the shape of the engaging rod, and the thread directions of the two screw rods are arranged to be opposite.

[0017] The rotating rod drives the transmission plate to move through the screw rod, and the transmission plate is movably sleeved inside the middle plate to achieve the purpose of limiting, preventing it from rotating and deviating with the rotation of the screw rod, thereby achieving the purpose of improving the stable transmission of the device.

[0018] By matching the shape of the convex plate with the shape of the card slot, the two can be connected more tightly without offset, thereby ensuring that the support between the two can be stable. Secondly, the use of the I-shaped column can effectively ensure that there will be no impact when the rotating rod rotates alone. Finally, by setting the shape of the engaging rod to a hexagonal prism structure, it can perform uniaxial telescopic movement forward and backward with the rotation of the stud without rotation offset. The shape adaptation of the engaging groove and the engaging rod can finally achieve a true synchronous connection between the two rotating rods. In some operations that require simultaneous extrusion support, the rotation time can be saved, the operation convenience of the device is improved, and the practicality of the device is further improved.

[0019] Two devices can be used during operation, wherein two movable plates of one device respectively support the front wall and the rear wall of the foundation pit, and two movable plates of the other device respectively support the left wall and the right wall of the foundation pit.

[0020] Working principle: When the outer wall of the movable plate is not tightly attached to the surface of the pit wall, the rotating rod is rotated to drive the screw to rotate, so that the transmission plate is moved by the transmission effect of the screw, and the convex plate is used to drive the support plate to extrude, so that the support plate extrude the movable plate to fit the wall. If the movable plate on the opposite side needs to extend and extrude the pit wall at the same time, the stud is rotated to drive the engaging rod to move, so that the engaging rod is embedded in the engaging groove to complete the fixation between the two rotating rods, and then the rotating rod can be rotated simultaneously to realize the simultaneous rotation of the two screws and complete the back-to-back extrusion operation.

[0021] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pit wall support frame for a construction foundation pit, comprising two movable plates (1), the inner walls of the two movable plates being fixed with support plates (2), wherein: The side surfaces of the other ends of the two support plates are provided with a slot (3), and also include two convex plates (4) adapted to the slots, the outer ends of the two convex plates are respectively embedded in the slots of the two support plates, the inner ends of the two convex plates are fixedly connected to the transmission plates (5), the interiors of the two transmission plates are threadedly connected with screw rods (6), the inner ends of the two screw rods extend from the two transmission plates respectively, and the inner ends of the two screw rods are fixed with rotating rods (7), and also include an I-shaped column (8), the I-shaped column is rotatably connected in the two rotating rods, that is, half of the I-shaped column is located in one rotating rod, and the other half of the I-shaped column is located in the other rotating rod, and the I-shaped column is connected to the inner ends of the two screw rods. The column connects the two rotating rods together; the outer sides of the two transmission plates are movably sleeved with an intermediate plate (9), and a rotating groove is opened in the middle of the upper surface of the intermediate plate, the size of the rotating groove is adapted to the size of the two rotating rods, and the tops of the two rotating rods are exposed from the rotating groove; an engaging groove (10) is opened on the side of one of the rotating rods facing the other rotating rod, and a stud (11) is rotatably installed inside the other rotating rod, and an engaging rod (12) is threadedly installed on the stud, and the head of the stud is exposed from the rotating rod. The head of the stud is turned to rotate the stud, driving the engaging rod to move, so that the engaging rod performs telescopic movement and is embedded in the engaging groove to complete the support and fixation.

2. The pit wall support frame for construction foundation pit according to claim 1, characterized in that: The shape of the engaging rod is a hexagonal prism, the shape of the engaging groove is matched with the shape of the engaging rod, and the thread directions of the two screw rods are arranged to be opposite.

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