A foundation pit settlement monitoring device

Abstract

This utility model discloses a foundation pit settlement monitoring device, which includes a chassis, a rod fixedly connected to the upper surface of the chassis, an inner cylinder slidably connected to the outside of the rod, a receiving plate fixedly connected to the outside of the inner cylinder, a sleeve rotatably connected to the inside of the receiving plate, a threaded rod threadedly connected to the inside of the sleeve, a side plate rotatably connected to the end of the threaded rod away from the sleeve, a connecting rod rotatably connected to the lower surface of the receiving plate, a slider rotatably connected to the bottom end of the connecting rod, and a sliding connection between the slider and the chassis via a groove. Through the above structure, the settlement of the chassis is transferred to the receiving plate through the sliding connection between the rod and the inner cylinder. Combined with a laser rangefinder, the settlement is monitored by measuring the change in the distance between the receiving plate and the chassis. Simultaneously, the connecting rod and slider prevent excessive soil displacement, and the thread adjustment of the threaded rod and sleeve allows for fine-tuning of the side plate position to adapt to the installation requirements of different foundation pit support structures.

Description

Technical Field

[0001] This utility model relates to the field of monitoring device technology, and in particular to a foundation pit settlement monitoring device. Background Technology

[0002] In the field of modern building construction, foundation pit engineering, as a fundamental link in underground structure construction, directly affects the safety and quality of the entire project. During excavation and subsequent construction, foundation pits are prone to settlement and deformation due to factors such as changes in soil stress and the influence of groundwater. Therefore, accurate and reliable foundation pit settlement monitoring is crucial to ensuring construction safety and the stability of the surrounding environment.

[0003] Currently, most common foundation pit settlement monitoring devices on the market use traditional manual measurement or simple mechanical structures to collect settlement data. Manual measurement is not only inefficient but also highly susceptible to human error, making it difficult to guarantee measurement accuracy and achieve real-time dynamic monitoring. While some automated monitoring devices based on mechanical structures can improve monitoring efficiency to some extent, they are insufficient in terms of data acquisition accuracy and device adaptability. Existing monitoring devices often struggle to adapt to the installation requirements of different foundation pit support structures, lacking flexible adjustment mechanisms. In complex geological conditions or diverse foundation pit projects, they cannot meet the installation and monitoring requirements of actual application scenarios. Furthermore, their protection and early warning functions for soil displacement are relatively weak, failing to effectively prevent safety hazards caused by excessive soil displacement. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a foundation pit settlement monitoring device, which solves the problem that the monitoring device is often difficult to adapt to the installation requirements of different foundation pit support structures, lacks a flexible adjustment mechanism, and cannot effectively prevent excessive soil displacement.

[0005] This utility model also provides a foundation pit settlement monitoring device, comprising: a chassis, multiple overlapping blocks fixedly connected to the outside of the chassis, positioning piles fixedly connected to the lower surfaces of the multiple overlapping blocks, a rod fixedly connected to the upper surface of the chassis, an inner cylinder slidably connected to the outside of the rod, a receiving plate fixedly connected to the outside of the inner cylinder, a sleeve rotatably connected to the inside of the receiving plate, a threaded rod threadedly connected to the inside of the sleeve, a side plate rotatably connected to the end of the threaded rod away from the sleeve; a connecting rod rotatably connected to the lower surface of the receiving plate, a slider rotatably connected to the bottom end of the connecting rod, the slider being slidably connected to the chassis via a groove; a box fixedly connected to the top of the rod, a data acquisition device fixedly installed inside the box; and a laser rangefinder fixedly connected to the lower surface of the receiving plate. The settlement of the chassis is transferred to the receiving plate through the sliding connection structure between the rod and the inner cylinder. In conjunction with the laser rangefinder, the settlement can be monitored by measuring the change in the distance between the receiving plate and the chassis. At the same time, the connecting rod and the slider can prevent excessive displacement of the soil, while the thread adjustment of the threaded rod and the sleeve allows for fine adjustment of the side plate position to adapt to the installation requirements of different foundation pit support structures.

[0006] According to the foundation pit settlement monitoring device of this utility model, a telescopic tube is provided on the outside of the threaded rod. One end of the telescopic tube is fixedly connected to a side plate, and the other end of the telescopic tube is fixedly connected to a receiving plate. The telescopic tube protects the outside of the threaded rod from the influence of soil.

[0007] According to the foundation pit settlement monitoring device of this utility model, a first bevel gear is fixedly connected to the outside of the sleeve, and a second bevel gear is meshed with the outside of the first bevel gear. An adjusting handle is fixedly connected to the upper surface of the second bevel gear, and the outside of the adjusting handle is rotatably connected to the receiving plate. By rotating the adjusting handle, the second bevel gear is driven to rotate, thereby causing the first bevel gear to rotate, and thus the sleeve to rotate.

[0008] According to the foundation pit settlement monitoring device of this utility model, the side plate is arranged along the inclined direction, and both the side plate and the base are provided with a waterproof layer. The side plate supports the foundation pit, and the waterproof layer protects the side plate and the base.

[0009] According to the foundation pit settlement monitoring device of this utility model, there are two connecting rods symmetrically distributed, with the two connecting rods located on both sides of the rod body and arranged along the inclined direction. The symmetrical arrangement of the two connecting rods forms a stable triangular support structure, which can counteract the lateral force generated by uneven settlement of the foundation pit soil and prevent the bearing plate from deflecting.

[0010] According to the present invention, a foundation pit settlement monitoring device includes an alarm installed inside the housing. The alarm, data acquisition unit, and laser rangefinder are electrically connected. The alarm receives settlement data from the laser rangefinder in real time via the data acquisition unit. When the monitored value exceeds a set cumulative change threshold, an audible and visual alarm is immediately activated.

[0011] According to the foundation pit settlement monitoring device of this utility model, the receiving plate has an internal cavity, and the first bevel gear and the second bevel gear are located inside the cavity. The cavity protects the transmission mechanism formed by the first bevel gear and the second bevel gear from interference from the external environment.

[0012] According to the foundation pit settlement monitoring device of this utility model, there are two threaded rods and two symmetrically distributed side plates, and multiple stakes are fixedly connected to the outside of each of the two side plates. The side plates can eliminate the eccentric loading error caused by unilateral force and improve the installation stability of the device in soft soil foundation.

[0013] Beneficial effects: Compared with existing technologies, this new type of foundation pit settlement monitoring device transmits the settlement of the chassis to the receiving plate through the sliding connection structure between the rod and the inner cylinder. It also monitors the settlement by measuring the change in the distance between the receiving plate and the chassis using a laser rangefinder. At the same time, the connecting rod and the slider can prevent excessive soil displacement, while the threaded adjustment of the threaded rod and the sleeve allows for fine adjustment of the side plate position to adapt to the installation requirements of different foundation pit support structures. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a complete structural diagram of the foundation pit settlement monitoring device of this utility model;

[0016] Figure 2 This is a side view of the foundation pit settlement monitoring device of this utility model;

[0017] Figure 3 This is a structural diagram of the adjustment mechanism of the foundation pit settlement monitoring device of this utility model;

[0018] Figure 4 This utility model relates to a foundation pit settlement monitoring device. Figure 1 Partial structural diagram of point A in the middle.

[0019] Legend:

[0020] 1. Chassis; 2. Overlapping block; 3. Positioning stake; 4. Rod body; 5. Inner tube; 6. Receiving plate; 7. Sleeve; 8. Threaded rod; 9. Side plate; 10. Connecting rod; 11. Slider; 12. Box body; 13. Data acquisition unit; 14. Laser rangefinder; 15. Telescopic tube; 16. First bevel gear; 17. Second bevel gear; 18. Adjustment handle; 19. Waterproof layer; 20. Alarm; 21. Pile. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model provides a foundation pit settlement monitoring device, which includes: a chassis 1, multiple overlapping blocks 2 fixedly connected to the outside of the chassis 1, positioning piles 3 fixedly connected to the lower surface of the multiple overlapping blocks 2, a rod 4 fixedly connected to the upper surface of the chassis 1, an inner cylinder 5 slidably connected to the outside of the rod 4, a receiving plate 6 fixedly connected to the outside of the inner cylinder 5, a sleeve 7 rotatably connected to the inside of the receiving plate 6, a threaded rod 8 threadedly connected to the inside of the sleeve 7, a side plate 9 rotatably connected to the end of the threaded rod 8 away from the sleeve 7, a telescopic tube 15 provided on the outside of the threaded rod 8, one end of the telescopic tube 15 fixedly connected to the side plate 9, the side plate 9 being arranged along the inclined direction, two threaded rods 8 and two side plates 9 symmetrically distributed, multiple stakes 21 fixedly connected to the outside of each side plate 9, a waterproof layer 19 provided on the outside of both the side plate 9 and the chassis 1, and the other end of the telescopic tube 15 fixedly connected to the receiving plate 6.

[0023] Specifically, during installation and adjustment, the sleeve 7 is rotated, and the two threaded rods 8 inside the sleeve 7 have opposite thread structures. When the sleeve 7 rotates, based on the thread transmission principle, the threaded rods 8 will drive the side plate 9 to perform synchronous lateral displacement adjustment, thereby adapting to different sizes of foundation pit support structures, which can significantly improve the environmental adaptability and installation convenience of the monitoring device. Then, the stakes 21 of the side plate 9 are inserted into the inner wall of the foundation pit.

[0024] The lower surface of the receiving plate 6 is rotatably connected to a connecting rod 10. There are two connecting rods 10, which are symmetrically distributed. The two connecting rods 10 are located on both sides of the rod body 4 and are arranged in an inclined direction. The bottom end of the connecting rod 10 is rotatably connected to a slider 11. The outside of the slider 11 is slidably connected to the base plate 1 through a sliding groove. The top of the rod body 4 is fixedly connected to a box 12. A data acquisition device 13 is fixedly installed inside the box 12. A laser rangefinder 14 is fixedly connected to the lower surface of the receiving plate 6. An alarm 20 is installed inside the box 12. The alarm 20, the data acquisition device 13 and the laser rangefinder 14 are electrically connected.

[0025] Specifically, the lateral support mechanism composed of connecting rod 10 and slider 11 constructs a dynamic response protection structure through hinge and sliding cooperation. When the foundation pit settles, the vertical displacement generated by the chassis 1 will drive the slider 11 to slide along the chute, and at the same time drive the connecting rod 10 to rotate around the hinge point. As the settlement increases, the connecting rod 10 gradually changes from a free rotation state to a rigid support state. When the critical angle is reached, a stable triangular support structure is formed, which effectively restricts the lateral displacement of the soil and avoids the risk of collapse caused by excessive deformation of the soil.

[0026] Meanwhile, the laser rangefinder 14 monitors the distance change between itself and the receiving plate 6 in real time, and transmits the displacement data to the data acquisition unit 13 in the form of high-precision electrical signals. The data acquisition unit 13 performs filtering, trend analysis and threshold comparison on the continuously collected data through built-in algorithms. Once the detected settlement exceeds the preset safety threshold, the alarm 20 will be triggered immediately to issue a warning to the on-site personnel in the form of sound and light signals, so as to ensure that the construction personnel can take emergency measures in time and ensure the safety of the foundation pit construction.

[0027] A first bevel gear 16 is fixedly connected to the outside of the sleeve 7. A second bevel gear 17 is meshed with the outside of the first bevel gear 16. An adjustment handle 18 is fixedly connected to the upper surface of the second bevel gear 17. The outside of the adjustment handle 18 is rotatably connected to the receiving plate 6. The receiving plate 6 has a receiving cavity inside. The first bevel gear 16 and the second bevel gear 17 are located inside the receiving cavity of the receiving plate 6.

[0028] Specifically, the operator drives the second bevel gear 17 to rotate synchronously by rotating the adjustment handle 18. Since the second bevel gear 17 meshes with the first bevel gear 16, the second bevel gear 17 can drive the first bevel gear 16, thereby causing the sleeve 7 to drive the two threaded rods 8 to move to both sides by rotation. In addition, the receiving cavity of the receiving plate 6 protects the transmission mechanism.

[0029] Working principle: The chassis 1 is driven into the stable soil layer of the foundation pit through the positioning piles 3 connected by the overlapping blocks 2 to form an absolute measurement benchmark. The galvanized surface of the positioning piles 3 can prevent benchmark drift caused by underground corrosion. Then, the adjustment handle 18 is rotated so that the second bevel gear 17 drives the first bevel gear 16 to rotate the sleeve 7. The sleeve 7 is threadedly connected to two threaded rods 8 with opposite thread directions, so that the two threaded rods 8 can drive the side plate 9 to adjust the lateral displacement to adapt to the installation requirements of different foundation pit support structures. The connecting rod 10 and the slider 11 form a lateral support mechanism. When the foundation pit settles, the vertical displacement of the chassis 1 will cause the slider 11 to drive the connecting rod 10 to rotate. When the settlement is too large, it will provide support and prevent safety hazards caused by excessive soil displacement. At the same time, the laser rangefinder 14 measures the change in distance between itself and the receiving plate 6 in real time, and the data is processed by the data acquisition unit 13. When the settlement exceeds the threshold, the alarm 20 will be activated to provide warning and reduce the occurrence of accidents.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A foundation pit settlement monitoring device, characterized in that, include: A chassis (1) is fixedly connected to the outside of the chassis (1) with multiple overlapping blocks (2), and positioning stakes (3) are fixedly connected to the lower surface of the multiple overlapping blocks (2). A rod body (4) is fixedly connected to the upper surface of the chassis (1). An inner cylinder (5) is slidably connected to the outside of the rod body (4). A receiving plate (6) is fixedly connected to the outside of the inner cylinder (5). A sleeve (7) is rotatably connected to the inside of the receiving plate (6). A threaded rod (8) is threadedly connected to the inside of the sleeve (7). A side plate (9) is rotatably connected to the end of the threaded rod (8) away from the sleeve (7). The lower surface of the receiving plate (6) is rotatably connected to a connecting rod (10), the bottom end of the connecting rod (10) is rotatably connected to a slider (11), the outside of the slider (11) is slidably connected to the chassis (1) through a sliding groove, the top of the rod (4) is fixedly connected to a box (12), a data acquisition device (13) is fixedly installed inside the box (12), and a laser rangefinder (14) is fixedly connected to the lower surface of the receiving plate (6).

2. The foundation pit settlement monitoring device according to claim 1, characterized in that, The threaded rod (8) is provided with a telescopic tube (15) on its outside. One end of the telescopic tube (15) is fixedly connected to the side plate (9), and the other end of the telescopic tube (15) is fixedly connected to the receiving plate (6).

3. The foundation pit settlement monitoring device according to claim 1, characterized in that, The sleeve (7) is fixedly connected to the outside of a first bevel gear (16), and the outside of the first bevel gear (16) is meshed with a second bevel gear (17). An adjustment handle (18) is fixedly connected to the upper surface of the second bevel gear (17), and the outside of the adjustment handle (18) is rotatably connected to the receiving plate (6).

4. The foundation pit settlement monitoring device according to claim 1, characterized in that, The side plate (9) is arranged along the inclined direction, and both the side plate (9) and the chassis (1) are provided with a waterproof layer (19).

5. The foundation pit settlement monitoring device according to claim 1, characterized in that, There are two connecting rods (10) that are symmetrically distributed. The two connecting rods (10) are located on both sides of the rod body (4) and arranged in an inclined direction.

6. The foundation pit settlement monitoring device according to claim 1, characterized in that, An alarm (20) is installed inside the housing (12), and the alarm (20), data acquisition unit (13) and laser rangefinder (14) are electrically connected.

7. The foundation pit settlement monitoring device according to claim 3, characterized in that, The receiving plate (6) has an internal cavity, and the first bevel gear (16) and the second bevel gear (17) are located inside the cavity of the receiving plate (6).

8. The foundation pit settlement monitoring device according to claim 1, characterized in that, There are two threaded rods (8) and two side plates (9) symmetrically distributed. Multiple stakes (21) are fixedly connected to the outside of the two side plates (9).

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