A ground settlement detection device

Abstract

The utility model discloses a kind of ground subsidence detection devices, it relates to ground subsidence detection technical field, it includes fixed frame, support frame, upper cylinder, lower cylinder, laser transmitter and laser receiver;The bottom end of fixed frame is configured to be fixedly installed in stable reference area;The bottom end of support frame is configured to be fixedly installed in the ground area to be monitored;Upper cylinder is fixedly arranged in the upper of fixed frame;Lower cylinder is movably sleeved in the outside of support frame, and can slide along the axial direction of support frame, wherein, the bottom end of upper cylinder and the top end of lower cylinder are respectively provided with oppositely arranged light transmission opening, upper cylinder and lower cylinder are coaxially detachably butt-jointed at light transmission opening, and jointly form a light-blocking measurement channel;Laser transmitter is fixedly arranged in the inside of upper cylinder, and its emission direction is vertically downward;Laser receiver is fixedly arranged in the inside of lower cylinder, and its receiving surface is horizontally upward.The utility model can reduce external interference, improve the precision of ground subsidence detection.

Description

Technical Field

[0001] This utility model belongs to the field of foundation settlement detection technology, and specifically relates to a foundation settlement detection device. Background Technology

[0002] Foundation settlement monitoring is a crucial aspect of building engineering, enabling the timely detection of foundation instability and ensuring the safe use of buildings. With accelerating urbanization and the proliferation of high-rise buildings, the accuracy and reliability of foundation settlement monitoring are of paramount importance to protecting people's lives and property. Currently, laser measurement technology, due to its high precision, rapid response, and non-contact measurement capabilities, is widely used in foundation settlement detection devices. However, existing laser detection devices have a drawback in practical applications: the laser transmitter and receiver are typically directly exposed to the external environment. This design makes the optical surfaces of the laser transmitter and receiver susceptible to interference from dust, rain, debris, and ambient light. Obstacles such as dust and debris can cause attenuation, scattering, or complete blockage of the laser signal, leading to increased measurement errors. These problems are particularly pronounced under adverse weather conditions, such as sandstorms, heavy rain, or strong sunlight, severely impacting the accuracy and reliability of foundation settlement monitoring. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a foundation settlement detection device that can reduce external interference and improve the accuracy of foundation settlement detection.

[0004] A foundation settlement detection device includes a fixed frame, a support frame, an upper cylinder, a lower cylinder, a laser emitter, and a laser receiver. The bottom end of the fixed frame is configured to be fixedly installed in a stable reference area. The bottom end of the support frame is configured to be fixedly installed in the foundation area to be monitored. The upper cylinder is fixedly installed on the fixed frame. The lower cylinder is movably sleeved on the outside of the support frame and can slide along the axial direction of the support frame. The bottom end of the upper cylinder and the top end of the lower cylinder are respectively provided with oppositely arranged light-transmitting openings. The upper cylinder and the lower cylinder are detachably coaxially connected at the light-transmitting openings to form a light-shielding measurement channel. The laser emitter is fixedly installed inside the upper cylinder with its emission direction vertically downward. The laser receiver is fixedly installed inside the lower cylinder with its receiving surface horizontally upward to receive the signal emitted by the laser emitter.

[0005] Furthermore, the fixing frame includes a base, a column, and a connecting arm; the column is vertically fixed to the upper end of the base; one end of the connecting arm is connected to the upper end of the column via a rotary joint; the upper cylinder is fixedly installed on the other end of the connecting arm.

[0006] Furthermore, an inclined support assembly is provided between the column and the connecting arm. The inclined support assembly includes an inclined rod, a sliding shaft, and an elastic lock. The upper end of the inclined rod is connected to the middle of the connecting arm through a hinge structure. A sliding groove is provided on the column along the vertical direction. The lower end of the inclined rod is fixedly connected to the sliding shaft, and the sliding shaft slides in cooperation with the sliding groove. The elastic lock is provided at the upper end of the sliding groove. When the sliding shaft slides to the upper end of the sliding groove, the elastic lock locks the lower end of the inclined rod at the upper end position of the sliding groove.

[0007] Furthermore, a slot is provided on one side of the base, which extends horizontally and connects to the lower end of the column; the connecting arm can rotate around the rotating joint so that the end connected to the upper cylinder is placed into the slot; there are insertion holes on both sides of the slot, and a pin is connected between the two insertion holes to prevent the connecting arm from moving out of the slot.

[0008] Furthermore, the column is equipped with a display screen for displaying settlement detection values, and the display screen and laser receiver are connected in communication.

[0009] Furthermore, the support frame includes a connecting seat and a telescopic rod, with the telescopic rod located at the upper end of the connecting seat and the laser receiver located at the upper end of the telescopic rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The light-shielding measurement channel formed by the upper and lower cylinders can effectively block the interference of external ambient light. By placing the laser transmitter and laser receiver inside the light-shielding measurement channel, dust, rainwater and other impurities are prevented from directly adhering to the surface of the optical components, reducing obstacles in the optical path, thereby ensuring stable transmission of laser signals and improving the accuracy of foundation settlement detection.

[0012] 2. The fixed frame provides a stable reference point for the device, ensuring the stability and measurement accuracy of the laser transmitter; the support frame connects to the ground area to be monitored, which can reflect the settlement changes of the ground in real time and ensure the accurate reception of the laser receiver. The overall structure is simple and easy to assemble. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the unfolded structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the folded structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the sliding fit between the sliding shaft and the sliding groove of this utility model.

[0016] The following are the labels in the diagram: 1. Fixed frame; 2. Support frame; 3. Upper cylinder; 4. Lower cylinder; 5. Laser transmitter; 6. Laser receiver; 7. Base; 8. Column; 9. Display screen; 10. Connecting arm; 11. Diagonal rod; 12. Connecting seat; 13. Telescopic rod; 14. Slide groove; 15. Elastic lock; 16. Sliding shaft; 17. Pin; 18. Groove; 19. Socket. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] like Figures 1-3 As shown, the foundation settlement detection device of this embodiment includes a fixed frame 1, a support frame 2, an upper cylinder 3, a lower cylinder 4, a laser emitter 5, and a laser receiver 6. The bottom end of the fixed frame 1 is fixedly installed in a stable reference area, while the bottom end of the support frame 2 is fixed to the foundation area to be monitored. The upper cylinder 3 is fixedly installed on the fixed frame 1, and the lower cylinder 4 is movably sleeved on the outside of the support frame 2 and can slide along the axial direction of the support frame 2. The mating ends of the upper cylinder 3 and the lower cylinder 4 are respectively provided with light-transmitting openings, forming a light-shielding measurement channel after mating. The upper cylinder 3 and the lower cylinder 4 can be connected by threads for easy assembly and disassembly. The laser emitter 5 is fixed inside the upper cylinder 3 and emits laser light vertically downwards; the laser receiver 6 is fixed inside the lower cylinder 4, and its horizontally upward-facing receiving surface is used to capture the laser signal, reflecting the amount of foundation settlement through changes in the optical path.

[0019] Specifically, the mounting bracket 1 includes a base 7, a column 8, and a connecting arm 10. The column 8 is vertically fixed to the upper end of the base 7. One end of the connecting arm 10 is connected to the top of the column 8 via a rotary joint, and the other end is fixed to the upper cylinder 3. To improve stability, an inclined support assembly is provided between the column 8 and the connecting arm 10, including an inclined rod 11, a sliding shaft 16, and an elastic lock 15. The upper end of the inclined rod 11 is hinged to the middle of the connecting arm 10, and the lower end slides with the sliding groove 14 of the column 8 via the sliding shaft 16. When the sliding shaft 16 slides to the top of the groove 14, the elastic lock 15 automatically locks the inclined rod 11, forming a stable triangular support. Generally, the middle part of the elastic lock 15 is connected to the side wall of the column 8 via a rotating shaft. A torsion spring is sleeved on the rotating shaft, and the torsion spring acts on the elastic lock 15 to give it an elastic restoring force.

[0020] In addition, a horizontal slot 18 is provided on the side of the base 7. When the connecting arm 10 is rotated to coincide with the column 8, one end of the upper cylinder 3 can be placed in the slot 18. The pin 17 can be inserted through the two side holes 19 to fix it, which is convenient for transportation. The column 8 is also equipped with a display screen 9 to display the settlement data transmitted by the laser receiver 6 in real time. The support frame 2 includes a connecting seat 12 and a telescopic rod 13. The laser receiver 6 is installed at the top of the telescopic rod 13, and the height can be adjusted to adapt to the measurement of foundation areas at different heights.

[0021] In use, first fix the fixed frame 1 and the support frame 2 in the reference area and the area to be measured, respectively, unfold the connecting arm 10 and lock the oblique support assembly. After starting the laser transmitter 5, if the foundation settles, it will cause the support frame 2 to move downward, increasing the distance between the laser transmitter 5 and the laser receiver 6, and increasing the time to receive the laser signal. After signal processing, the settlement amount can be read through the display screen 9. This process is beneficial to reducing environmental interference due to the light-shielding channel formed by the upper cylinder 3 and the lower cylinder 4. After the measurement is completed, the connecting arm 10 can be retracted to the slot 18, and the pin 17 can be inserted for easy handling.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foundation settlement detection device, characterized in that: The mounting bracket is configured to be fixedly installed in a stable reference area at its bottom. A support frame, the bottom of which is fixedly installed in the foundation area to be monitored, the support frame includes a connecting seat and a telescopic rod, the telescopic rod being located at the upper end of the connecting seat; The upper cylinder is fixedly mounted on the fixed frame; The lower cylinder is movably sleeved on the outside of the support frame and can slide along the axial direction of the support frame. The bottom end of the upper cylinder and the top end of the lower cylinder are respectively provided with oppositely arranged light-transmitting openings. The upper cylinder and the lower cylinder are detachably coaxially connected at the light-transmitting openings to form a light-shielding measurement channel. The laser emitter is fixedly installed inside the upper cylinder, and its emission direction is vertically downward. A laser receiver is fixedly installed at the upper end of the telescopic rod and located inside the lower cylinder, with its receiving surface facing upwards to receive signals emitted by the laser transmitter.

2. The foundation settlement detection device according to claim 1, characterized in that: The fixing frame includes a base, a column, and a connecting arm; the column is vertically fixed to the upper end of the base; one end of the connecting arm is connected to the upper end of the column via a rotary joint; the upper cylinder is fixedly installed on the other end of the connecting arm.

3. The foundation settlement detection device according to claim 2, characterized in that: An inclined support assembly is provided between the column and the connecting arm. The inclined support assembly includes an inclined rod, a sliding shaft, and an elastic latch. The upper end of the inclined rod is connected to the middle part of the connecting arm through a hinge structure. A sliding groove is formed on the column along the vertical direction. The lower end of the inclined rod is fixedly connected to the sliding shaft, and the sliding shaft slides in cooperation with the sliding groove. The elastic latch is provided at the upper end of the sliding groove. When the sliding shaft slides to the upper end of the sliding groove, the elastic latch locks the lower end of the inclined rod at the upper end position of the sliding groove.

4. The foundation settlement detection device according to claim 2, characterized in that: The base has a slot on one side, which extends horizontally and communicates with the lower end of the column; the connecting arm can rotate around the rotating joint so that one end of it connected to the upper cylinder is inserted into the slot; the slot has insertion holes on both sides, and a pin is connected between the two insertion holes to prevent the connecting arm from moving out of the slot.

5. The foundation settlement detection device according to claim 2, characterized in that: The column is equipped with a display screen for displaying settlement detection values, and the display screen and the laser receiver are connected in communication.

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