Adjustable steel support connecting device for foundation pit support structure

Abstract

The utility model relates to the technical field of foundation pit support, concretely is a kind of adjustable steel support connecting device for foundation pit support structure, including fixed cylinder, the inside sliding connection of fixed cylinder has two moving plate, the one end fixed mounting of moving plate has foundation pit support board, the top of fixed cylinder is provided with first motor, the one side of first motor is fixedly installed with the bidirectional screw rod of moving plate screw connection by coupling. The utility model has the advantages that through the cooperation between fixed cylinder, moving plate, foundation pit support board, first motor, bidirectional screw rod, lifting plate, toothed plate, support plate, auxiliary rotating shaft, gear and driving device, the distance between two foundation pit support boards can be adjusted to support different foundation pits, and at the same time, the support plate can contact the ground during adjustment, the height of fixed cylinder is lifted to separate the bottom of foundation pit support board from the ground, so that adjustment is more convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, and in particular to an adjustable steel support connection device for foundation pit support structures. Background Technology

[0002] Adjustable steel support connection device for foundation pit support structure is a temporary support structure designed specifically for deep foundation pit engineering. During the excavation of foundation pit, the surrounding soil is prone to deformation or collapse. The steel support, as a temporary structural system, is used to resist soil pressure and water pressure, thereby maintaining the stability of the foundation pit. It is commonly used in deep foundation pit engineering such as subway stations and basements of high-rise buildings.

[0003] Existing adjustable steel support connection devices for foundation pit support structures are generally adapted to foundation pits of different widths by using movable side support plates on both sides. However, when adjusting the side support plates, the friction caused by the side plates contacting the ground during movement is relatively large, resulting in low adjustment efficiency. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose an adjustable steel support connection device for foundation pit support structure, so as to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of this utility model provides an adjustable steel support connection device for foundation pit support structures, comprising a fixed cylinder, two movable plates slidably connected inside the fixed cylinder, a foundation pit support plate fixedly installed at one end of each movable plate, a first motor disposed at the top of the fixed cylinder, a bidirectional lead screw threadedly connected to the movable plate fixedly installed on one side of the first motor via a coupling, lifting plates slidably connected to both sides of the fixed cylinder, a toothed plate fixedly installed on one side of each lifting plate, a support plate fixedly installed at the bottom of each lifting plate, two auxiliary rotating shafts rotatably connected to the bottom of the fixed cylinder, gears meshing with the toothed plates fixedly installed on the surface of each auxiliary rotating shaft, and a driving auxiliary shaft disposed on one side of the fixed cylinder. The driving device for rotating shafts, using the above-mentioned scheme, achieves the following technical effects: The second motor drives the worm gear to rotate, which in turn drives the meshing worm wheel to rotate, causing the two auxiliary shafts to rotate. The rotation of these auxiliary shafts, combined with the meshing of gears and toothed plates, causes the lifting plate to descend, bringing the support plate into contact with the ground. Then, the first motor drives the bidirectional lead screw to rotate, causing the two moving plates to move in opposite directions, bringing the pit support plate to a position with a small gap from the pit's sidewall. The second motor then drives the lifting plate to reset, and the first motor then operates again to bring the support plate into contact with the pit's sidewall. This makes adjustment more convenient and increases efficiency.

[0007] Preferably, in any of the above solutions, the movable plate includes a rod body, the top of which is fixedly connected to a threaded plate, and the threaded plate is threadedly connected to a bidirectional lead screw. The top of the fixed cylinder is provided with a limiting groove that matches the threaded plate. The technical effect achieved by the above solution is that the first motor drives the bidirectional lead screw to rotate, thereby driving the two threaded plates to move in opposite directions. This allows the rod body to drive the foundation pit support plate to move in opposite directions to adjust its spacing, thus enabling support operations for different foundation pits.

[0008] Preferably, in any of the above solutions, hollow cylinders are fixedly connected to both sides of the fixed cylinder, and guide grooves are provided on the inner wall of the hollow cylinders. Guide sliders adapted to the guide grooves are fixedly connected to both sides of the lifting plate. The technical effect achieved by the above solution is that when the lifting plate is moving, the guide sliders slide inside the guide grooves, thereby making the movement of the lifting plate more stable and preventing one side of the toothed plate from rubbing against the fixed cylinder.

[0009] Preferably, in any of the above solutions, two support plates are fixedly connected to the bottom of the fixed cylinder, and an auxiliary rotating shaft is rotatably connected inside the support plates, with one end of the auxiliary rotating shaft penetrating through a support plate. The technical effect achieved by adopting the above solution is that the position of the auxiliary rotating shaft can be positioned by the support plates, thereby enabling the auxiliary rotating shaft to rotate more stably.

[0010] Preferably, in any of the above solutions, the driving device includes a second motor and a worm gear. The second motor is fixedly mounted on one side of the fixed cylinder, and a worm gear meshing with the worm gear is fixedly mounted on one side of the second motor via a coupling. The worm gear is fixedly mounted on one end of the auxiliary rotating shaft that penetrates the support plate. The technical effect achieved by the above solution is that the second motor drives the worm gear to rotate, and the rotation of the worm gear drives the worm gear meshing with it to rotate, thereby causing the two auxiliary rotating shafts to rotate. The rotation of the auxiliary rotating shafts, in conjunction with the meshing of the gears and the toothed plate, causes the lifting plate to descend. By using one second motor to drive four lifting plates for lifting and adjusting operations, energy can be saved.

[0011] Preferably, in any of the above solutions, a limiting plate is fixedly installed on the top of the lifting plate. The size of the limiting plate is larger than that of the lifting plate. The technical effect achieved by adopting the above solution is that the maximum moving distance of the lifting plate can be limited by the limiting plate, thereby causing the lifting plate to detach from the fixed cylinder.

[0012] Preferably, the number of the lifting plates and hollow cylinders is four, and the four lifting plates are symmetrically distributed on both sides of the fixed cylinder. The technical effect achieved by adopting the above scheme is that the fixed cylinder can be supported more stably by lowering the four lifting plates.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0014] 1. This adjustable steel support connection device for foundation pit support structure, through the cooperation of a fixed cylinder, a movable plate, a foundation pit support plate, a first motor, a two-way screw, a lifting plate, a toothed plate, a support plate, an auxiliary rotating shaft, gears and a drive device, can adjust the distance between two foundation pit support plates for support operations on different foundation pits. At the same time, during adjustment, the support plate can be made to contact the ground, and the height of the fixed cylinder can be raised to separate the bottom of the foundation pit support plate from the ground, thus making the adjustment more convenient and more efficient.

[0015] 2. The adjustable steel support connection device for the foundation pit support structure, through the cooperation between the auxiliary rotating shaft, gear and drive device, can drive four lifting plates to perform lifting and adjustment operations through the operation of a second motor, thereby saving more energy. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a second-view structural schematic diagram of Embodiment 1 of the present invention;

[0018] Figure 3 This is Embodiment 1 of the present utility model. Figure 2 A schematic diagram of the structure at point A;

[0019] Figure 4 This is Embodiment 1 of the present utility model. Figure 2 A schematic diagram of the structure at point B;

[0020] Figure 5 This is a third-view structural diagram of Embodiment 1 of the present invention.

[0021] Wherein: 1-fixed cylinder, 2-moving plate, 201-rod body, 202-threaded plate, 3-foundation pit support plate, 4-first motor, 5-double-acting screw, 6-lifting plate, 7-tooth plate, 8-support plate, 9-auxiliary rotating shaft, 10-gear, 11-drive device, 1101-second motor, 1102-worm gear, 1103-worm, 12-hollow cylinder, 13-guide groove, 14-guide slider, 15-support plate, 16-limiting plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] Example 1: As Figures 1 to 5As shown, an adjustable steel support connection device for a foundation pit support structure includes a fixed cylinder 1. Two movable plates 2 are slidably connected inside the fixed cylinder 1. A foundation pit support plate 3 is fixedly installed at one end of each movable plate 2. A first motor 4 is installed at the top of the fixed cylinder 1. A bidirectional lead screw 5, threadedly connected to the movable plate 2, is fixedly installed on one side of the first motor 4 via a coupling. Lifting plates 6 are slidably connected to both sides of the fixed cylinder 1. A toothed plate 7 is fixedly installed on one side of each lifting plate 6. A support plate 8 is fixedly installed at the bottom of each lifting plate 6. Two auxiliary rotating shafts 9 are rotatably connected to the bottom of the fixed cylinder 1. Gears 10 that mesh with the toothed plates 7 are fixedly installed on the surface of each auxiliary rotating shaft 9. A drive device 11 for rotating the auxiliary rotating shafts 9 is provided on one side of the fixed cylinder 1, via a second motor. The operation of motor 1101 drives the worm gear 1103 to rotate, which in turn drives the worm wheel 1102 meshing with it to rotate, thereby causing the two auxiliary shafts 9 to rotate. Through the rotation of the auxiliary shafts 9, the engagement of gear 10 and toothed plate 7 causes the lifting plate 6 to descend, making the support plate 8 contact the ground. Then, the operation of the first motor 4 drives the bidirectional lead screw 5 to rotate, thereby causing the two moving plates 2 to move in opposite directions, so that the pit support plate 3 moves to a position with a small gap from the side wall of the pit. Then, the operation of the second motor 1101 drives the lifting plate 6 to reset, and then the operation of the first motor 4 makes the support plate 3 contact the side wall of the pit, thus making the adjustment more convenient and the efficiency higher.

[0024] As an optional technical solution of this utility model, the movable plate 2 includes a rod 201, and a threaded plate 202 is fixedly connected to the top of the rod 201. The threaded plate 202 is threadedly connected to the bidirectional lead screw 5. The top of the fixed cylinder 1 is provided with a limiting groove that matches the threaded plate 202. The first motor 4 drives the bidirectional lead screw 5 to rotate, thereby driving the two threaded plates 202 to move in opposite directions. This allows the rod 201 to drive the pit support plate 3 to move in opposite directions to adjust its spacing, thus enabling support operations for different pits.

[0025] As an optional technical solution of this utility model, hollow cylinders 12 are fixedly connected to both sides of the fixed cylinder 1. The inner wall of the hollow cylinder 12 is provided with guide grooves 13. Guide sliders 14 that are adapted to the guide grooves 13 are fixedly connected to both sides of the lifting plate 6. When the lifting plate 6 is moving, the guide sliders 14 slide inside the guide grooves 13, which makes the movement of the lifting plate 6 more stable and prevents one side of the toothed plate 7 from rubbing against the fixed cylinder 1.

[0026] As an optional technical solution of this utility model, the bottom of the fixed cylinder 1 is fixedly connected to two support plates 15. An auxiliary rotating shaft 9 is rotatably connected inside the support plate 15, and one end of the auxiliary rotating shaft 9 penetrates through a support plate 15. The position of the auxiliary rotating shaft 9 can be positioned by the support plate 15, so that the auxiliary rotating shaft 9 can rotate more stably.

[0027] As an optional technical solution of this utility model, the drive device 11 includes a second motor 1101 and a worm gear 1102. The second motor 1101 is fixedly installed on one side of the fixed cylinder 1. A worm 1103 that meshes with the worm gear 1102 is fixedly installed on one side of the second motor 1101 through a coupling. The worm gear 1102 is fixedly installed at one end of the auxiliary rotating shaft 9 that penetrates the support plate 15. The second motor 1101 drives the worm 1103 to rotate, and then the rotation of the worm 1103 drives the worm gear 1102 that meshes with it to rotate, thereby causing the two auxiliary rotating shafts 9 to rotate. The rotation of the auxiliary rotating shafts 9, in conjunction with the meshing of the gear 10 and the toothed plate 7, causes the lifting plate 6 to descend. By using one second motor 1101 to drive four lifting plates 6 to perform lifting and adjusting operations, energy can be saved.

[0028] As an optional technical solution of this utility model, a limiting plate 16 is fixedly installed on the top of the lifting plate 6. The size of the limiting plate 16 is larger than that of the lifting plate 6. The maximum moving distance of the lifting plate 6 can be limited by the limiting plate 16, so that the lifting plate 6 can be separated from the fixed cylinder 12.

[0029] As an optional technical solution of this utility model, there are four lifting plates 6 and four hollow cylinders 12. The four lifting plates 6 are symmetrically distributed on both sides of the fixed cylinder 1. By lowering the four lifting plates 6, the fixed cylinder 1 can be supported more stably.

[0030] An adjustable steel support connection device for a foundation pit support structure operates as follows: A second motor 1101 drives a worm gear 1103 to rotate, which in turn drives a meshing worm wheel 1102 to rotate, causing two auxiliary shafts 9 to rotate. The rotation of the auxiliary shafts 9, combined with the meshing of gear 10 and toothed plate 7, causes the lifting plate 6 to descend, bringing the support plate 8 into contact with the ground. Then, a first motor 4 drives a bidirectional lead screw 5 to rotate, causing the two moving plates 2 to move in opposite directions, resulting in a small gap between the foundation pit support plate 3 and the side wall of the foundation pit. The second motor 1101 then drives the lifting plate 6 to reset, and the first motor 4 then operates again to bring the foundation support plate 3 into contact with the side wall of the foundation pit. This design makes adjustment more convenient and efficient.

[0031] In summary, this foundation pit support structure uses an adjustable steel support connection device. Through the cooperation of the fixed cylinder 1, the movable plate 2, the foundation pit support plate 3, the first motor 4, the double-acting screw 5, the lifting plate 6, the toothed plate 7, the support plate 8, the auxiliary rotating shaft 9, the gear 10, and the drive device 11, the distance between the two foundation pit support plates 3 can be adjusted for supporting different foundation pits. At the same time, during adjustment, the support plate 8 can be brought into contact with the ground, and the height of the fixed cylinder 1 can be raised to separate the bottom of the foundation pit support plate 3 from the ground, making the adjustment more convenient and efficient. Through the cooperation of the auxiliary rotating shaft 9, the gear 10, and the drive device 11, the four lifting plates 6 can be driven by a second motor 1101 to perform lifting and adjustment operations, thereby saving energy.

[0032] Example 2: An adjustable steel support connection device for foundation pit support structure. In this example, positioning holes are opened on the surface of the support plate 8 based on the above example. The positioning holes can help the support plate 8 to support more stably.

Claims

1. An adjustable steel support connection device for foundation pit support structure, comprising a fixed cylinder (1), characterized in that: The fixed cylinder (1) has two sliding plates (2) inside. One end of the sliding plate (2) is fixedly installed with a pit support plate (3). The top of the fixed cylinder (1) is provided with a first motor (4). One side of the first motor (4) is fixedly installed with a double-ended screw (5) threadedly connected to the sliding plate (2) via a coupling. The two sides of the fixed cylinder (1) are slidably connected with lifting plates (6). One side of the lifting plate (6) is fixedly installed with a toothed plate (7). The bottom of the lifting plate (6) is fixedly installed with a support plate (8). The bottom of the fixed cylinder (1) is rotatably connected with two auxiliary rotating shafts (9). The surface of the auxiliary rotating shafts (9) is fixedly installed with gears (10) that mesh with the toothed plates (7). One side of the fixed cylinder (1) is provided with a drive device (11) that drives the auxiliary rotating shafts (9) to rotate.

2. The adjustable steel support connection device for foundation pit support structure according to claim 1, characterized in that: The movable plate (2) includes a rod (201), and a threaded plate (202) is fixedly connected to the top of the rod (201). The threaded plate (202) is threadedly connected to the bidirectional lead screw (5). The top of the fixed cylinder (1) is provided with a limiting groove that is compatible with the threaded plate (202).

3. The adjustable steel support connection device for foundation pit support structure according to claim 2, characterized in that: Hollow cylinders (12) are fixedly connected to both sides of the fixed cylinder (1). A guide groove (13) is provided on the inner wall of the hollow cylinder (12). Guide sliders (14) that are compatible with the guide groove (13) are fixedly connected to both sides of the lifting plate (6).

4. The adjustable steel support connection device for foundation pit support structure according to claim 3, characterized in that: The bottom of the fixed cylinder (1) is fixedly connected to two support plates (15), and an auxiliary rotating shaft (9) is rotatably connected inside the support plate (15), with one end of the auxiliary rotating shaft (9) penetrating through a support plate (15).

5. The adjustable steel support connection device for foundation pit support structure according to claim 4, characterized in that: The drive device (11) includes a second motor (1101) and a worm gear (1102). The second motor (1101) is fixedly installed on one side of the fixed cylinder (1). A worm (1103) that meshes with the worm gear (1102) is fixedly installed on one side of the second motor (1101) through a coupling. The worm gear (1102) is fixedly installed at one end of the auxiliary rotating shaft (9) that penetrates the support plate (15).

6. The adjustable steel support connection device for foundation pit support structure according to claim 5, characterized in that: A limiting plate (16) is fixedly installed on the top of the lifting plate (6), and the size of the limiting plate (16) is larger than that of the lifting plate (6).

7. The adjustable steel support connection device for foundation pit support structure according to claim 6, characterized in that: The number of the lifting plates (6) and the hollow cylinder (12) is four, and the four lifting plates (6) are symmetrically distributed on both sides of the fixed cylinder (1).

Images