A foundation engineering subsidence thickness detector

Abstract

The utility model provides a kind of foundation engineering sediment thickness detector, comprising: support, reel mechanism, measuring needle measuring cake detection mechanism, it is characterized in that, the cable wound on measuring needle measuring cake detection mechanism and reel mechanism is connected by inner support mechanism;The inner support mechanism includes opening and closing power device, connecting rod mechanism, top plate and the mounting plate for installing measuring needle measuring cake detection mechanism;Multiple top plates are equiangularly distributed at the outer periphery of opening and closing power device, and the top plate is realized openable and closeable connection by connecting rod mechanism and opening and closing power device;The bottom of the opening and closing power device is rotatably connected by universal joint and mounting plate.The device sets top plate and power opening and closing device, can make top plate prop in borehole inner wall, and adapt to borehole of different sizes, ensure that detection mechanism is stable and does not tip over, ensure stable detection;Meanwhile by setting rotatable guide mechanism, can ensure that it does not tip over during lowering, ensure that measuring needle is really to sediment upper surface, ensure detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically to a sediment thickness detector for foundation engineering. Background Technology

[0002] During the construction of bored piles, sediment is an unavoidable problem. The presence of sediment can greatly affect the bearing capacity and stability of the piles, and in severe cases, it can even lead to project failure, causing huge economic losses and safety hazards. Sediment thickness detection is a very important task during the construction process.

[0003] Most existing sediment thickness detection devices include a probe and a measuring cake that slides outside the probe. In practice, the probe is first lowered into the sediment to measure the bottom depth. Then, the measuring cake is lowered along the outside of the probe to measure the top depth of the sediment. The difference between the two sets of data is the sediment thickness. However, some sediment becomes softer due to water immersion. When the probe is inserted into the soft sediment, it tends to tilt. The measuring cake will also tilt when lowered along the outside of the probe, resulting in inaccurate measurement results. Utility Model Content

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a sediment thickness detector for foundation engineering. This detector features an electrically powered internal support within the borehole, effectively preventing the detection mechanism from tipping over and ensuring stable probe detection. Furthermore, it is equipped with an adjustable roller guide mechanism to guide and prevent tipping during lowering, ensuring the probe truly reaches the upper surface of the sediment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sediment thickness detector for foundation engineering includes: a support, a winding mechanism, and a probe and cake detection mechanism, wherein the cables wound on the probe and cake detection mechanism and the winding mechanism are connected by an internal support mechanism.

[0007] The internal support mechanism includes an opening and closing power device, a linkage mechanism, a top plate, and a mounting plate for mounting the probe and test plate detection mechanism; multiple top plates are distributed at equal angles around the opening and closing power device, and the top plates are connected to the opening and closing power device through the linkage mechanism; the bottom of the opening and closing power device is rotatably connected to the mounting plate through a universal joint.

[0008] The opening and closing power device consists of a lead screw, a lead screw lifting guide rod, a waterproof DC motor, and a lifting nut. The motor shaft of the waterproof DC motor is fixedly connected to the lead screw. Several lead screw lifting guide rods are distributed at equal angles around the lead screw. The top end of the lead screw lifting guide rod and the top end of the lead screw are fixed together by an upper fixing block. The bottom end of the lead screw lifting guide rod is fixed together by a lower fixing block. At the same time, the waterproof DC motor is installed on the lower fixing block. The lead screw is threaded with a lifting nut.

[0009] The linkage mechanism consists of a spring telescopic rod and a hinge rod. A lower mounting block is provided below the lifting nut, and an upper mounting block is fixedly installed on the upper part of the lifting nut. Both the upper and lower mounting blocks can slide on several lead screw lifting guide rods. The center of both the upper and lower mounting blocks has a through hole for the lead screw to pass through. One end of the hinge rod is hinged to the back of the corresponding mounting plate. The other end of the hinge rod is hinged to the lower mounting block. One end of the spring telescopic rod is hinged to the hinge rod, and the other end of the spring telescopic rod is hinged to the upper mounting block.

[0010] Preferably, a guiding mechanism is also provided, which consists of a guide wheel, a telescopic rod, and a support frame; the guide wheel is fixedly connected to the bottom circumferential surface of the universal joint via the telescopic rod; the end of the telescopic rod away from the universal joint is fixedly connected to the support frame; a pressure sensor is installed at the bottom of the support frame.

[0011] Preferably, the bottom of the support frame is flush with the bottom of the probe and caliper detection mechanism.

[0012] Preferably, the support frame consists of a vertical rod and a bottom arc-shaped block.

[0013] Preferably, the bottom surface of the bottom arc-shaped block is provided with a plurality of anti-slip protrusions.

[0014] Preferably, the top plate has an arc-shaped plate structure, and the arc-shaped convex surface is provided with an anti-slip pad.

[0015] Preferably, the axes of the waterproof DC motor and the probe-and-panel detection mechanism are on the same line.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] By setting up a top plate and a power opening and closing device, the top plate can be supported on the inner wall of the borehole and can adapt to boreholes of different sizes, ensuring that the detection mechanism is stable and does not tip over, thus ensuring stable detection.

[0018] By setting a rotatable guiding mechanism, the probe is guided and prevented from tipping over during the lowering process, ensuring that it truly reaches the surface of the sediment; and it can adapt to non-vertical drilling, thus having a wider range of applications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal support mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal support mechanism of this utility model in its contracted state.

[0022] Figure 4 This is a schematic diagram of the internal support mechanism and guide mechanism of this utility model in the deflection state.

[0023] Figure 5 This is a schematic diagram of the internal support mechanism of this utility model in its open state;

[0024] Figure 6 This is a structural schematic diagram of the internal support mechanism of this utility model in its open state from another perspective.

[0025] in:

[0026] 1. Winding mechanism; 2. Bracket; 3. Cable; 4. Internal support mechanism; 5. Stylus and disc detection mechanism; 6. Upper fixing block; 7. Lead screw; 8. Upper mounting block; 9. Spring telescopic rod; 10. Hinge rod; 11. Universal joint; 12. Guide wheel; 13. Telescopic rod; 14. Mounting plate; 15. Support frame; 16. Lower fixing block; 17. Waterproof DC motor; 18. Top plate; 19. Lifting nut; 20. Lead screw lifting guide rod; 21. Anti-slip protrusions. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figures 1 to 2 As shown, a sediment thickness detector for foundation engineering includes: a support 2, a winding mechanism 1, and a probe and cake detection mechanism 5. The probe and cake detection mechanism 5 and the cable 3 wound on the winding mechanism 1 are connected by an inner support mechanism 4.

[0029] The inner support mechanism 4 includes an opening and closing power device, a linkage mechanism, a top plate 18, a guide mechanism, and a mounting plate 14 for mounting the probe and test plate detection mechanism 5; the three top plates 18 are evenly distributed around the opening and closing power device, and the top plates 18 are connected to the opening and closing power device through the linkage mechanism; the bottom of the opening and closing power device is rotatably connected to the mounting plate 14 through a universal joint 11.

[0030] The opening and closing power device consists of a lead screw 7, a lead screw lifting guide rod 20, a waterproof DC motor 17, and a lifting nut 19; the axis of the waterproof DC motor 17 and the probe and calibrator detection mechanism 5 are on the same line; the motor shaft of the waterproof DC motor 17 is fixedly connected to the lead screw 7, and three lead screw lifting guide rods 20 are distributed at equal angles around the lead screw 7. The top end of the lead screw lifting guide rod 20 and the top end of the lead screw 7 are fixed together by an upper fixing block 6, and the bottom end of the lead screw lifting guide rod 20 is fixed together by a lower fixing block 16. At the same time, the waterproof DC motor 17 is installed on the lower fixing block 16, and the lead screw 7 is threaded with a lifting nut 19;

[0031] The linkage mechanism consists of a spring telescopic rod 9 and a hinge rod 10. A lower mounting block is provided below the lifting nut 19, and an upper mounting block 8 is fixedly installed on the upper part of the lifting nut 19. Both the upper mounting block 8 and the lower mounting block can slide on several lead screw lifting guide rods 20. The center of both the upper mounting block 8 and the lower mounting block has a through hole through which the lead screw 7 passes. One end of the hinge rod 10 is hinged to the back of the corresponding mounting plate 14. The other end of the hinge rod 10 is hinged to the lower mounting block. One end of the spring telescopic rod 9 is hinged to the hinge rod 10, and the other end of the spring telescopic rod 9 is hinged to the upper mounting block 8.

[0032] In this embodiment, the lead screw 7 is made of high-strength plastic material, which is convenient for underwater use.

[0033] In this embodiment, a guiding mechanism is also provided, which consists of a guide wheel 12, a telescopic rod 13, and a support frame 15. The guide wheel 12 is fixedly connected to the bottom circumferential surface of the universal joint 11 via the telescopic rod 13. The end of the telescopic rod 13 away from the universal joint 11 is fixedly connected to the support frame 15. The telescopic rod 13 can adapt to holes of different sizes, and the universal joint 11 can drive the guiding mechanism to rotate, thereby adapting to non-perpendicular holes. The bottom of the support frame 15 is flush with the bottom of the probe and cake detection mechanism 5. When the support frame 15 presses on the upper surface of the sediment, the pressure sensor detects a signal and stops continuing downward, thereby ensuring that the probe truly reaches the upper surface of the sediment.

[0034] In this embodiment, the support frame 15 consists of a vertical rod and a bottom arc-shaped block; the bottom surface of the bottom arc-shaped block is provided with several anti-slip protrusions. The anti-slip protrusions are used to increase friction and improve stability.

[0035] In this embodiment, the top plate 18 is an arc-shaped plate structure, and the arc-shaped convex surface is provided with an anti-slip pad. The design of the arc-shaped plate structure fits the inside of the drill hole better, and the design of the anti-slip pad will provide better fit and stability.

[0036] Working principle

[0037] like Figure 3 , Figure 5-6 As shown, the waterproof DC motor 17 operates, driving the lead screw 7 to rotate. The lead screw 7 drives the lifting nut 19 to move along the lead screw lifting guide rod 20. When moving upward, the lifting nut 19 drives the three top plates 18 to open through the linkage mechanism until they are tightly supported inside the borehole; conversely, when moving downward, the three top plates 18 retract and close.

[0038] During the lowering process, the guide wheel 12 moves downward along the inside of the borehole under the action of the telescopic rod 13 until the pressure sensor at the bottom of the support frame 15 detects the signal, and then the lowering stops; the bottom of the support frame 15 is flush with the bottom of the probe and cake detection mechanism 5, thereby ensuring that the probe truly reaches the upper surface of the sediment.

[0039] like Figure 4 As shown, the design of the universal joint 11 allows the guide mechanism to deflect, thus making it suitable for non-perpendicular holes.

[0040] How to use

[0041] When it is necessary to detect the thickness of sediment at the bottom of the pile foundation hole, the probe and cake detection device can be inserted into the pile foundation hole. When the sensor at the bottom of the support frame 15 detects the signal, it indicates that the sediment has reached the upper surface. At this time, the external controller receives the signal to stop lowering the probe and cake detection device and controls the waterproof DC motor 17 to work. The waterproof DC motor 17 drives the lead screw 7 to rotate, causing the top plate 18 to open until it is tightly supported inside the hole, thereby supporting the probe and cake detection device, preventing it from tipping over, and ensuring the stability of the detection process.

[0042] Furthermore, during the lowering process, the guiding mechanism, under the action of the telescopic rod 13 and the universal joint 11, can move along the inside of the cavity to guide it, preventing it from tipping over during the lowering process. Compared with the existing technology, when measuring the thickness of soft sediment, it can ensure that the detection mechanism does not tip over, has good stability, and ensures the accuracy of the detection structure.

Claims

1. A sediment thickness detector for foundation engineering, comprising: The bracket, winding mechanism, and probe and calibrator detection mechanism are characterized in that the cables wound on the probe and calibrator detection mechanism and the winding mechanism are connected by an internal support mechanism. The internal support mechanism includes an opening and closing power device, a linkage mechanism, a top plate, and a mounting plate for mounting the probe and test plate detection mechanism; multiple top plates are distributed at equal angles around the opening and closing power device, and the top plates are connected to the opening and closing power device through the linkage mechanism; the bottom of the opening and closing power device is rotatably connected to the mounting plate through a universal joint. The opening and closing power device consists of a lead screw, a lead screw lifting guide rod, a waterproof DC motor, and a lifting nut. The motor shaft of the waterproof DC motor is fixedly connected to the lead screw. Several lead screw lifting guide rods are distributed at equal angles around the lead screw. The top end of the lead screw lifting guide rod and the top end of the lead screw are fixed together by an upper fixing block. The bottom end of the lead screw lifting guide rod is fixed together by a lower fixing block. At the same time, the waterproof DC motor is installed on the lower fixing block. The lead screw is threaded with a lifting nut. The linkage mechanism consists of a spring telescopic rod and a hinge rod. A lower mounting block is provided below the lifting nut, and an upper mounting block is fixedly installed on the upper part of the lifting nut. Both the upper and lower mounting blocks can slide on several lead screw lifting guide rods. The center of both the upper and lower mounting blocks has a through hole for the lead screw to pass through. One end of the hinge rod is hinged to the back of the corresponding mounting plate. The other end of the hinge rod is hinged to the lower mounting block. One end of the spring telescopic rod is hinged to the hinge rod, and the other end of the spring telescopic rod is hinged to the upper mounting block.

2. A ground work foundation engineering sediment thickness detector according to claim 1, wherein It is also equipped with a guiding mechanism, which consists of a guide wheel, a telescopic rod and a support frame; the guide wheel is fixedly connected to the bottom circumferential surface of the universal joint through the telescopic rod; the end of the telescopic rod away from the universal joint is fixedly connected to the support frame, and a pressure sensor is installed at the bottom of the support frame.

3. A sediment thickness detector for foundation engineering as described in claim 1 or 2, characterized in that, The bottom of the support frame is flush with the bottom of the probe and caliper detection mechanism.

4. A ground works settlement thickness detector as claimed in claim 3, wherein, The support frame consists of a vertical rod and a bottom arc-shaped block.

5. A ground works settlement thickness detector as claimed in claim 4, wherein, The bottom surface of the bottom arc-shaped block is provided with several anti-slip protrusions.

6. The thickness detector for foundation engineering settlement according to claim 1, wherein The top plate is an arc-shaped plate structure, and the arc-shaped convex surface is provided with anti-slip pads.

7. The thickness detector for foundation engineering settlement according to claim 1, wherein The axes of the waterproof DC motor and the probe and cake testing mechanism are on the same line.

Images