A support device for municipal foundation pit construction

Abstract

The utility model discloses a support device for municipal foundation pit construction, which belongs to the field of foundation pit support, including support plates, guide rails and support rods. The support plates are arranged on the support plates on both sides of the foundation pit; the guide rails are arranged on the side of the support plate close to the foundation pit, and at least one slider is slidably connected to the guide rail, and a fastening bolt is threadedly connected to one side of the slider; a first rod sleeve is arranged on the slider; the support rod is used to tighten the support plate, and the support rod includes a threaded sleeve, and a screw is threadedly connected to each of the two ends of the threaded sleeve, and one end of the screw is inserted into the first rod sleeve corresponding to it. The utility model arranges the guide rails and the slider on the support plate, so that the position of the support rod is adjustable, improves the adaptability and flexibility of the support device, reduces the construction delay and equipment and material placement problems caused by improper support rod height, and provides a more spacious and flexible operating space for construction operations.

Description

Technical Field

[0001] The utility model belongs to the field of foundation pit support, and in particular relates to a support device used for municipal foundation pit construction. Background Art

[0002] In the construction of municipal infrastructure, foundation pit construction is an indispensable part, which involves the development and utilization of underground space, such as the laying of underground pipelines. The stability of the foundation pit is directly related to the safety of construction and surrounding buildings. Therefore, it is very important to adopt appropriate support measures.

[0003] Traditional foundation pit support technology generally adopts the method of vertically installing high-strength support plates on both sides of the foundation pit. These support plates are usually made of durable high-strength steel or concrete materials. Their main function is to withstand the huge lateral pressure generated by the excavation of the side wall of the foundation pit, and prevent the instability of the soil from causing the side wall of the foundation pit to collapse. In order to further improve the overall stability of the support structure, in engineering practice, a diagonal brace structure is often added to the inner side of the support plate (i.e., the side close to the excavation surface of the foundation pit). One end of the diagonal brace is firmly connected to the ground or a fixed building structure, and the other end is closely connected to the support plate, together forming a triangular or similar geometric support system. This design significantly improves the bearing capacity and stability of the foundation pit support structure by dispersing and effectively resisting the lateral soil pressure, effectively preventing the collapse of the side wall of the foundation pit, and providing a strong guarantee for construction safety.

[0004] However, although the diagonal bracing structure performs well in enhancing the stability of foundation pits, its inherent space encroachment problem has become increasingly prominent. Especially in foundation pit construction in urban central areas or under complex geological conditions, where space is limited, the arrangement of diagonal braces often becomes a key factor restricting construction efficiency. Diagonal braces not only occupy valuable internal space of the foundation pit, restricting the free entry and exit of construction equipment, the stacking of building materials, and the reasonable layout of underground pipelines and other necessary facilities, but may also complicate the construction process and extend the construction period. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a support device for municipal foundation pit construction to solve the problem of the inclined support structure occupying the construction space in the foundation pit, while ensuring the foundation pit support effect, providing a more spacious and flexible operating space for construction operations.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A supporting device for municipal foundation pit construction, comprising:

[0008] Support plates are set on both sides of the foundation pit to withstand the lateral pressure generated by the soil on the side walls of the foundation pit;

[0009] A guide rail is arranged on a side of the support plate close to the foundation pit, and at least one slider is slidably connected to the guide rail, and a fastening bolt is threadedly connected to one side of the slider for positioning the slider on the guide rail; a first rod sleeve is provided on the slider;

[0010] The support rod is used to tighten the support plate to resist the lateral soil pressure. The support rod includes a threaded sleeve. The two ends of the threaded sleeve are each threadedly connected to a screw rod, and the screw threads at the two ends have opposite rotation directions. One end of the screw rod is inserted into the first rod sleeve corresponding to it.

[0011] Furthermore, a boss is provided on the upper end of the support plate near the foundation pit, a plurality of threaded holes are provided on the boss, a cover plate is provided on the cover plate, a first through hole corresponding to the position of the threaded hole is provided on the cover plate, and the cover plate is connected to the boss by bolts.

[0012] Furthermore, a first sleeve is provided on one side of the support plate, and a second sleeve is provided on the other side, and the first sleeve and the second sleeve are arranged diagonally of the support plate, and studs are connected inside the first sleeve and the second sleeve for connecting multiple support devices.

[0013] Furthermore, mutually engaging teeth are provided on the butt joint surfaces of the first sleeve and the second sleeve.

[0014] Furthermore, a guide groove is provided at the lower part of the support plate, a plug plate is provided in the guide groove, the outer side of the plug plate is inserted into the side wall of the foundation pit, and a second rod sleeve is provided on one side of the plug plate.

[0015] Furthermore, a bottom support plate is provided on one side of the plug plate, and a plurality of evenly distributed ribs are provided on the bottom support plate.

[0016] Furthermore, the bottom support plate is provided with a second through hole corresponding to the position of the threaded hole, which is used for connecting with the boss of the lower support plate when the support plates are stacked vertically.

[0017] Furthermore, it also includes a connecting plate, with plug rods at both ends of the connecting plate, the plug rods are inserted into the first rod sleeve of the slider, and a sliding seat is slidably connected to the connecting plate, one end of the sliding seat is provided with a socket adapted to the screw rod, and the other end of the sliding seat is against the side wall of the support plate.

[0018] The beneficial effects of the utility model are:

[0019] 1) The utility model provides guide rails and sliders on the support plate to make the position of the support rod adjustable, thereby improving the adaptability and flexibility of the support device, reducing construction delays and equipment and material placement problems caused by improper support rod height, and providing a more spacious and flexible operating space for construction operations.

[0020] 2) By setting a cover plate at the upper end of the support plate as a pedal, it is convenient for workers to flexibly cross the foundation pit according to the construction environment.

[0021] 3) A first sleeve and a second sleeve are arranged at diagonal positions of the support plate, and mutually engaging teeth are arranged on the mating surfaces of the first sleeve and the second sleeve, thereby ensuring the stability of the support device when installed at a corner of the foundation pit.

[0022] 4) A plug plate is set at the bottom of the support plate. When the soil on the side of the foundation pit slides toward the side of the support plate, the gravity of the soil is transmitted to the plug plate at the bottom of the support plate, thereby improving the stability of the bottom of the support plate.

[0023] 5) By arranging a bottom support plate on one side of the plug plate, the stability of the bottom of the support plate is further enhanced. In addition, by arranging a second through hole corresponding to the position of the threaded hole on the bottom support plate, vertical stacking of the support device is achieved, thereby expanding the application scope of the support device.

[0024] 6) When there are large equipment or many construction materials in the foundation pit, multiple support rods may affect the entry and exit of equipment or the placement of materials. By setting up connecting plates, the support device can be supported by one support rod and two connecting plates, and the position of the support rod on the connecting plate can be adjusted to leave more operating space for equipment or materials. While ensuring the support effect, the flexibility of the support device is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a use status diagram of a supporting device used for municipal foundation pit construction.

[0026] Figure 2 The utility model is a structural schematic diagram of a supporting device used for municipal foundation pit construction.

[0027] Figure 3 It is a schematic diagram of the support plate structure.

[0028] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0029] Figure 5 It is a schematic diagram of the plug board structure.

[0030] Figure 6 It is a schematic diagram of the support device of Example 2.

[0031] Figure 7 It is a schematic diagram of the connecting plate in Example 2.

[0032] Figure 8 It is a schematic diagram of the horizontal connection of the support device.

[0033] Fig. 9It is a schematic diagram of the vertical connection of the support device.

[0034] In the figure, 1, foundation pit; 2, supporting plate; 21, guide groove; 22, boss; 23, threaded hole; 24, first bushing; 25, second bushing; 26, latching tooth; 27, guide rail; 28, slider; 29, first rod sleeve; 3, plug plate; 31, second rod sleeve; 32, bottom support plate; 33, second through hole; 4, support rod; 41, screw rod; 42, threaded sleeve; 5, connecting plate; 51, plug rod; 52, slide seat; 53, socket; 6, cover plate; 61, first through hole. DETAILED DESCRIPTION

[0035] The following will be combined with the attached Figure 1-Figure 9 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] Example 1

[0038] like Figure 1 , Figure 2 As shown, a support device for municipal foundation pit construction includes a support plate 2, a guide rail 27 and a support rod 4. The support plate 2 is arranged on both sides of the foundation pit 1 to withstand the lateral pressure generated by the soil on the side wall of the foundation pit; Figure 3 As shown, the guide rail 27 is arranged on a side of the support plate 2 close to the foundation pit 1, and at least one slider 28 is slidably connected to the guide rail 27. In this embodiment, two sliders 28 are slidably connected to each guide rail 27; a fastening bolt is threadedly connected to one side of the slider 28 for positioning the slider 28 on the guide rail 27; a first rod sleeve 29 is provided on the slider 28;

[0039] The support rod 4 is used to tighten the support plate 2 to resist the lateral soil pressure. Figure 2As shown, the support rod 4 includes a threaded sleeve 42, and each of the two ends of the threaded sleeve 42 is threadedly connected to a screw 41, and the screws 41 at both ends have opposite thread rotation directions, and one end of the screw 41 is inserted into the corresponding first rod sleeve 29; the threaded telescopic support rod 4 is easy to adapt to foundation pits of different widths, thereby improving the adaptability and flexibility of the support device.

[0040] During the foundation pit support construction, the support plates 2 are placed on both sides of the foundation pit 1, and then the support rods 4 are adjusted to an appropriate length according to the width of the foundation pit, and the screw rods 41 at both ends of the support rods 4 are inserted into the first rod sleeve 29, and the threaded sleeve 42 is continuously rotated so that the screw rods 41 at both ends generate a tightening force on the support plates 2, thereby realizing the support function of the support device.

[0041] During the foundation pit construction, as the construction progresses, when the height of the support rod 4 affects the placement of equipment or materials, loosen the fastening bolts on one side of the slider 28 to allow the slider 28 to slide freely on the guide rail 27. Then, according to actual needs, adjust the slider 28 (and the support rod 4 connected thereto) to a height that does not affect the placement of equipment or materials. Finally, re-tighten the bolts to ensure the stable position of the slider 28 and the support rod 4.

[0042] This height adjustment mechanism improves the adaptability and flexibility of the support device, making the construction process smoother and more efficient; it reduces construction delays and equipment and material placement problems caused by improper height of the support rod 4, thereby reducing construction costs and time costs.

[0043] like Figure 3 As shown, a boss 22 is provided on the upper end of the support plate 2 near the foundation pit, and a plurality of threaded holes 23 are provided on the boss 22. Figure 1 As shown, a cover plate 6 is provided on the boss 22, and a first through hole 61 corresponding to the position of the threaded hole 23 is provided on the cover plate 6, and the cover plate 6 is connected to the boss 22 by bolts; the cover plate 6 serves as a pedal to facilitate workers to cross the foundation pit. It should be noted that not all support plates 2 are provided with cover plates 6, and the number and installation position of the cover plates 6 can be flexibly determined according to the construction environment.

[0044] like Figure 3 As shown, the support plate 2 is provided with a first sleeve 24 on one side and a second sleeve 25 on the other side, and the first sleeve 24 and the second sleeve 25 are arranged diagonally on the support plate 2, and studs are connected inside the first sleeve 24 and the second sleeve 25 for connecting multiple support devices.

[0045] like Figure 4 As shown, the first sleeve 24 and the second sleeve 25 are provided with mutually engaging teeth 26 on the butt joint surface. Figure 8As shown, when there is a corner in the foundation pit, the support plate 2 adjusts the corresponding angle according to the corner of the foundation pit, and the locking teeth 26 of the first sleeve 24 and the second sleeve 25 engage with each other, and the two support plates 2 are fastened by studs, ensuring the adaptability and stability of the support device.

[0046] like Figure 3 , Figure 5 As shown, a guide groove 21 is provided at the lower part of the support plate 2, and a plug plate 3 is provided in the guide groove 21. The outer side of the plug plate 3 is inserted into the side wall of the foundation pit, and a second rod sleeve 31 is provided on one side of the plug plate 3. When installing the plug plate 3, the plug plate 3 is first inserted into the guide groove 21, and then the support rod 4 is extended to gradually insert the plug plate 3 into the side wall of the foundation pit. After the installation of the plug plate 3 is completed, the support rod 4 can be removed. When the soil on the side of the foundation pit slides to the side of the support plate 2, the gravity of the soil is transmitted to the plug plate 3 at the lower part of the support plate 2, thereby improving the stability of the bottom of the support plate 2.

[0047] like Figure 5 As shown, a bottom support plate 32 is provided on one side of the inserting plate 3 , and a plurality of evenly distributed ribs are provided on the bottom support plate 32 . The bottom support plate 32 further enhances the stability of the bottom of the supporting plate 2 .

[0048] like Figure 5 As shown, the bottom support plate 32 is provided with a second through hole 33 corresponding to the position of the threaded hole 23, which is used to connect with the boss 22 of the lower support plate 2 when the support plates 2 are stacked vertically, further expanding the application range of the support device. Specifically, Fig. 9 As shown, when the vertical depth of the foundation pit is greater than the height of a single support plate 2, the support plate 2 at the bottom of the foundation pit is installed first, and then another support plate 2 is placed on the boss 22, so that the bottom support plate 32 of the upper support plate 2 is seated on the boss 22, and the second through hole 33 is aligned with the threaded hole 23, and the upper and lower support plates 2 are connected using a connecting piece.

[0049] Example 2

[0050] The difference from Example 1 is that Figure 6 , Figure 7 As shown, it also includes a connecting plate 5, and two ends of the connecting plate 5 are provided with plug rods 51, and the plug rod 51 is inserted into the first rod sleeve 29 of the slider 28. A sliding seat 52 is slidably connected to the connecting plate 5, and one end of the sliding seat 52 is provided with a socket 53 adapted to the screw rod 41, and the other end of the sliding seat 52 is against the side wall of the support plate 2 to avoid deformation of the connecting plate 5 when the support rod 4 supports the support plate 2.

[0051] When the equipment in the foundation pit is large or there are many construction materials, multiple support rods 4 may affect the entry and exit of the equipment or the placement of materials. At this time, the connecting plate 5 is buckled on the slider 28. The support device can be supported by one support rod 4 and two connecting plates 5. The position of the support rod 4 on the connecting plate 5 is adjustable to leave more operating space for the equipment or materials. While ensuring the support effect, the flexibility of the support device is further improved.

[0052] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A support device for municipal foundation pit construction, characterized in that: include: Support plates are set on both sides of the foundation pit to withstand the lateral pressure generated by the soil on the side walls of the foundation pit; A guide rail is arranged on a side of the support plate close to the foundation pit, and at least one slider is slidably connected to the guide rail, and a fastening bolt is threadedly connected to one side of the slider for positioning the slider on the guide rail; a first rod sleeve is provided on the slider; The support rod is used to tighten the support plate to resist the lateral soil pressure. The support rod includes a threaded sleeve. The two ends of the threaded sleeve are each threadedly connected to a screw rod, and the screw threads at the two ends have opposite rotation directions. One end of the screw rod is inserted into the first rod sleeve corresponding to it.

2. A supporting device for municipal foundation pit construction according to claim 1, characterized in that: A boss is provided on the upper end of the support plate near the foundation pit, a plurality of threaded holes are provided on the boss, a cover plate is provided on the boss, a first through hole corresponding to the position of the threaded hole is provided on the cover plate, and the cover plate is connected to the boss by bolts.

3. A supporting device for municipal foundation pit construction according to claim 1, characterized in that: The support plate is provided with a first sleeve on one side and a second sleeve on the other side, and the first sleeve and the second sleeve are arranged diagonally on the support plate. Studs are connected inside the first sleeve and the second sleeve for connecting multiple support devices.

4. A supporting device for municipal foundation pit construction according to claim 3, characterized in that: Mutually engaged locking teeth are arranged on the butt joint surfaces of the first sleeve and the second sleeve.

5. The supporting device for municipal foundation pit construction according to claim 1, characterized in that: A guide groove is provided at the lower part of the support plate, a plug plate is provided in the guide groove, the outer side of the plug plate is inserted into the side wall of the foundation pit, and a second rod sleeve is provided on one side of the plug plate.

6. A supporting device for municipal foundation pit construction according to claim 5, characterized in that: A bottom support plate is provided on one side of the plug plate, and a plurality of evenly distributed ribs are provided on the bottom support plate.

7. A supporting device for municipal foundation pit construction according to claim 6, characterized in that: The bottom support plate is provided with a second through hole corresponding to the position of the threaded hole, which is used to connect with the boss of the lower support plate when the support plates are stacked vertically.

8. A supporting device for municipal foundation pit construction according to any one of claims 1 to 7, characterized in that: It also includes a connecting plate, with plug rods at both ends of the connecting plate, the plug rods are inserted into the first rod sleeve of the slider, and a sliding seat is slidably connected to the connecting plate, one end of the sliding seat is provided with a socket adapted to the screw rod, and the other end of the sliding seat is against the side wall of the support plate.

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