Foundation engineering deep foundation pit supporting device

Abstract

The utility model belongs to the technical field of foundation engineering, particularly relates to a foundation engineering deep foundation pit supporting device, and aims to solve the problems that the supporting range is small and the danger coefficient is high in the background technology, and provides the following scheme that the foundation engineering deep foundation pit supporting device comprises supporting plates which are symmetrically distributed, and hinged plates which are symmetrically distributed are welded to the outer walls of one sides of the two supporting plates; and an internal thread sleeve is hinged between the two hinged plates. The two supporting plates can be specially used for supporting the inner wall of the foundation pit, so that the supporting plates can be attached to the inner wall of the foundation pit in the foundation pits with different widths and sizes, the supporting effect is remarkable, the supporting range is greatly widened, the butt joint structure is arranged on each supporting plate, and the supporting effect is good. The positioning blocks in the bottom frame of the upper-layer supporting plate can be directly connected into the top frame of the lower-layer supporting plate in a butt joint mode, the upper supporting plate and the lower supporting plate are connected and fixed, the supporting device can be used for the field of supporting of deep foundation pits, use is flexible, collapse of rock soil on the upper layer is avoided, and the safety coefficient is high.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation engineering, in particular to a deep foundation pit supporting device for foundation engineering. Background Art

[0002] Foundation pit support is a measure of support, reinforcement and protection for the side walls and surrounding environment to protect the construction of underground structures and the safety of the surrounding environment of the foundation pit. The purpose of foundation pit support is to ensure that the side walls and surrounding environment of the foundation pit can be effectively supported and protected during the construction of underground structures, to prevent safety accidents such as soil displacement and collapse caused by earth excavation, and to protect the safe use of surrounding existing buildings, roads, pipelines and other facilities.

[0003] In foundation engineering, it is necessary to dig a deep foundation pit and then work in the foundation pit. Before the work, it is necessary to prevent the rock and soil on both sides of the foundation pit from collapsing. However, in the existing working methods, it is rare to see special support inside the foundation pit. Some support methods only place the plate against the inner wall of the foundation pit. The overall support effect is general and the support range is limited.

[0004] In addition, some foundation pits are very deep, and only one layer of plate cannot prevent the collapse of the rock and soil in the upper layer of the foundation pit, which leads to a high risk factor. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a deep foundation pit supporting device for foundation engineering, which overcomes the deficiencies of the prior art and effectively solves the problems of small supporting range and high risk factor.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A deep foundation pit support device for foundation engineering, comprising symmetrically distributed support plates, two support plates are welded to one side outer wall with symmetrically distributed hinged plates, an internal thread sleeve is hinged between the two hinged plates, a bidirectional screw rod is screwed between the two internal thread sleeves, a hand wheel is installed on the outer wall of the bidirectional screw rod, and a positioning sleeve rod is hinged at the top of the bidirectional screw rod between the two hinged plates;

[0008] A symmetrically distributed bottom frame is welded to the bottom of the outer wall on one side of the support plate, and a positioning block is fixedly connected to the inner wall of the bottom frame. A top frame is welded to the top of the outer wall on one side of the support plate, and an axle pin is slidably connected to the inner wall of the top frame, and a limiting column is inserted into the inner wall at one end of the axle pin.

[0009] Preferably, the thread directions of the two ends of the bidirectional screw are opposite.

[0010] Preferably, the shaft pin is arranged through the inner wall of the positioning block.

[0011] Preferably, symmetrically distributed hanging rings are welded to the top of the outer wall of one side of the symmetrically distributed supporting plate.

[0012] Preferably, reinforcing rods distributed at equal distances are welded to the outer wall of one side of the support plate.

[0013] Preferably, a tool groove is provided on an outer wall of one side of the support plate.

[0014] The beneficial effects of the utility model are:

[0015] 1. The deep foundation pit support device of the foundation engineering designed in this invention has two support plates which can be used specifically for supporting the inner wall of the foundation pit, and a spacing adjustment structure is set between the two support plates. Under the action of the bidirectional screw rod, the bidirectional screw rod can be driven to rotate by turning the hand wheel, thereby controlling the two support plates to move closer to or farther away from each other, so that in foundation pits of different widths, the support plates can fit on the inner wall of the foundation pit, with significant supporting effect, which greatly increases the support range;

[0016] 2. The deep foundation pit support device of the foundation engineering designed in this invention is provided with a docking structure on each support plate. The positioning block in the bottom frame of the upper support plate can be directly docked with the top frame of the lower support plate, thus realizing the connection and fixation of the upper and lower support plates. It can be used in the field of foundation pit support with a relatively deep depth, can be used flexibly, avoids the collapse of the upper rock and soil, and has a high safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a deep foundation pit support device for foundation engineering proposed by the utility model;

[0018] Figure 2 A schematic diagram of a support plate connection structure of a deep foundation pit support device for foundation engineering proposed by the utility model;

[0019] Figure 3 It is a schematic diagram of the enlarged structure of part A of a deep foundation pit supporting device for foundation engineering proposed by the utility model.

[0020] In the figure: 1. Support plate; 2. Hinge plate; 3. Internal threaded sleeve; 4. Bidirectional screw; 5. Handwheel; 6. Positioning sleeve rod; 7. Bottom frame; 8. Positioning block; 9. Top frame; 10. Axis pin; 11. Limit column; 12. Hanging ring; 13. Reinforcement rod; 14. Tool slot. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1, refer to Figure 2 A deep foundation pit support device for foundation engineering comprises symmetrically distributed support plates 1, symmetrically distributed hinged plates 2 are welded to the outer walls of one side of the two support plates 1, and an internal threaded sleeve 3 is hinged between the two hinged plates 2, a bidirectional screw rod 4 is screwed between the two internal threaded sleeves 3, and a hand wheel 5 is installed on the outer wall of the bidirectional screw rod 4, and a positioning sleeve rod 6 is hinged at the top of the bidirectional screw rod 4 between the two hinged plates 2.

[0023] In this embodiment, the two support plates 1 can be specifically used to support the inner wall of the foundation pit, and a spacing adjustment structure is set between the two support plates 1. Under the action of the bidirectional screw 4, the bidirectional screw 4 can be driven to rotate by turning the hand wheel 5, thereby controlling the two support plates 1 to approach or move away from each other. Therefore, in foundation pits of different widths, the support plates 1 can be attached to the inner wall of the foundation pit, the supporting effect is significant, and the support range is greatly improved.

[0024] Example 2, refer to Figure 3 A deep foundation pit supporting device for foundation engineering, a symmetrically distributed bottom frame 7 is welded to the bottom of the outer wall on one side of the supporting plate 1, and a positioning block 8 is fixedly connected to the inner wall of the bottom frame 7, a top frame 9 is welded to the top of the outer wall on one side of the supporting plate 1, and an axle pin 10 is slidably connected to the inner wall of the top frame 9, and a limiting column 11 is inserted into the inner wall at one end of the axle pin 10.

[0025] In this embodiment, a docking structure is provided on each support plate 1, and the positioning block 8 in the bottom frame 7 of the upper support plate 1 can be directly docked with the top frame 9 of the lower support plate 1, thereby realizing the connection and fixation of the upper and lower support plates 1. It can be used in the field of deep foundation pit support, can be used flexibly, avoids the collapse of the upper rock and soil, and has a high safety factor.

[0026] Reference Figure 2 The thread directions of the two ends of the bidirectional screw rod 4 are opposite.

[0027] Reference Figure 3 The shaft pin 10 is arranged on the inner wall of the positioning block 8 through the shaft pin 10 .

[0028] Reference Figure 1 The top of the outer wall of one side of the symmetrically distributed supporting plate 1 is welded with symmetrically distributed hanging rings 12.

[0029] Reference Figure 1 The outer wall of one side of the support plate 1 is welded with reinforcing rods 13 distributed at equal distances.

[0030] Reference Figure 1 A tool groove 14 is provided on the outer wall of one side of the support plate 1.

[0031] Working principle: After the foundation pit is excavated, the two support plates 1 can be placed on both sides of the foundation pit through a crane according to the hanging ring 12, and then the bidirectional screw 4 can be driven to rotate by turning the hand wheel 5, so as to control the two support plates 1 to move away from each other until the support plates 1 are attached to the inner wall of the foundation pit. During construction, some commonly used tools can be temporarily placed in the tool groove 14 to avoid loss. Once a deep foundation pit is encountered, the positioning block 8 in the bottom frame 7 of the upper support plate 1 can be directly connected to the top frame 9 of the lower support plate 1, thereby realizing the connection and fixation of the upper and lower support plates 1.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A deep foundation pit support device for foundation engineering, comprising symmetrically distributed support plates (1), characterized in that: The outer walls of one side of the two support plates (1) are both welded with symmetrically distributed hinged plates (2), and an internal threaded sleeve (3) is hinged between the two hinged plates (2), a bidirectional screw rod (4) is screwed between the two internal threaded sleeves (3), and a hand wheel (5) is installed on the outer wall of the bidirectional screw rod (4), and a positioning sleeve rod (6) is hinged between the two hinged plates (2) and located at the top of the bidirectional screw rod (4); A symmetrically distributed bottom frame (7) is welded to the bottom of the outer wall of one side of the support plate (1), and a positioning block (8) is fixedly connected to the inner wall of the bottom frame (7); a top frame (9) is welded to the top of the outer wall of one side of the support plate (1), and an axle pin (10) is slidably connected to the inner wall of the top frame (9), and a limiting column (11) is inserted into the inner wall of one end of the axle pin (10).

2. A deep foundation pit support device for foundation engineering according to claim 1, characterized in that: The thread directions of the two ends of the bidirectional screw rod (4) are opposite.

3. A deep foundation pit support device for foundation engineering according to claim 1, characterized in that: The shaft pin (10) is arranged to penetrate the inner wall of the positioning block (8).

4. A deep foundation pit support device for foundation engineering according to claim 1, characterized in that: The top of the outer wall of one side of the symmetrically distributed support plate (1) is welded with symmetrically distributed hanging rings (12).

5. A deep foundation pit support device for foundation engineering according to claim 1, characterized in that: One side outer wall of the support plate (1) is welded with reinforcing rods (13) distributed at equal distances.

6. A deep foundation pit support device for foundation engineering according to claim 1, characterized in that: A tool groove (14) is provided on an outer wall of one side of the support plate (1).

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