Split type press-in magnetic ring layered sedimentation measuring device

Abstract

The utility model belongs to geotechnical engineering technical field, specifically discloses a kind of layered settlement measuring device of split press-in type magnetic ring. The multi-jack of the device is fixed at the bottom end of hydraulic pump, and the horizontal push slide plate is horizontally coaxially fixed at the bottom of multi-jack, and the split magnetic ring is a rigid rod with a pointed end at one end, and the pointed end is outwardly slidingly placed on the horizontal push slide plate, and the end away from the pointed end is respectively abutted with the corresponding multi-jack piston rod, the boom is vertically arranged and the bottom end is fixedly connected with the hydraulic pump, and the oil pipe is communicated with the oil port of the hydraulic pump at one end and communicated with the ground hydraulic system at the other end. The utility model sets horizontal push slide plate at the bottom end of multi-jack, and slidingly places each split magnetic ring pointed end outward on the horizontal push slide plate, and pushes each split magnetic ring into the soil body of drill hole to form settlement magnetic ring sleeve by the piston rod of multi-jack to monitor layered settlement, with the characteristics of simple structure, easy operation, accurate monitoring data and wide adaptability to strata.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering technology, specifically relating to a split-type magnetic ring stratified settlement measurement device that is simple in structure, easy to operate, provides accurate monitoring data, and is widely adaptable to various geological formations. Background Technology

[0002] Soil strata are prone to consolidation settlement or heave under the influence of superstructure loads or disturbances from underground construction. For example, vertical stratified displacement is likely to occur during the excavation of foundation pits and slopes. By monitoring stratified deformation, the deformation of soil strata can be grasped in time, and engineering measures can be adjusted in a timely manner to reduce engineering accidents.

[0003] Currently, soil stratified settlement monitoring is mostly achieved using a stratified settlement meter, which includes a magnetic probe, a measuring tape, an inductive detection device, a settlement magnetic ring, and a PVC pipe. The monitoring principle is to place the magnetic settlement ring on the PVC pipe and bury it together at a preset depth by drilling holes. The settlement value is determined by detecting the position of the magnetic settlement ring with the magnetic probe.

[0004] The existing method of installing settlement magnetic rings involves passing a hollow settlement magnetic ring through a PVC pipe, burying it in the borehole along with the PVC pipe after drilling, and then anchoring it in the soil using steel plates on the settlement magnetic ring, taking advantage of the narrowing effect of soft soil. However, the existing settlement magnetic rings have the following problems during use: ① In hard soil layers, the steel plates connected to the settlement magnetic ring cannot be completely anchored into the soil; ② Hard soil layers do not narrow the borehole, making backfilling difficult and easily disturbing the settlement magnetic ring; ③ When the settlement is uneven around the settlement magnetic ring, the PVC pipe passes through it, and during the settlement process, the settlement magnetic ring may tilt or the PVC pipe may bend, causing the magnetic ring to get stuck in the PVC pipe, resulting in distorted monitoring data.

[0005] Therefore, in order to address the shortcomings of existing settlement magnetic ring installation methods, an optimized design of a split-type press-in magnetic ring stratified settlement measurement device with simple structure, easy operation, accurate monitoring data, and wide adaptability to various strata is proposed, which is of great practical significance for improving soil stratified settlement monitoring. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides a split-type pressurized magnetic ring stratified settlement measurement device that is simple in structure, easy to operate, provides accurate monitoring data, and is widely adaptable to different geological formations.

[0007] The present invention relates to a split-type press-fit magnetic ring stratified settlement measuring device, which is implemented as follows: It includes a hydraulic pump, a multi-head jack, a split magnetic ring, a sliding plate, a boom, and an oil pipe. The multi-head jack is fixedly mounted at the bottom of the hydraulic pump. The sliding plate is a horizontally positioned circular plate coaxially fixed to the bottom of the multi-head jack. The split magnetic ring is a rigid rod with a pointed end. Multiple split magnetic rings with their pointed ends facing outwards slide on the upper surface of the sliding plate, with the ends away from the pointed ends respectively abutting against the piston rods of the corresponding multi-head jacks. The boom is vertically positioned and its bottom end is detachably fixedly connected to the hydraulic pump. One end of the oil pipe is connected to the oil port of the hydraulic pump, and the other end is connected to the hydraulic system on the ground.

[0008] Furthermore, the sliding plate includes a small circular plate and a large circular plate. The small circular plate is horizontally and coaxially fixed to the upper surface of the large circular plate. The multi-head jack is coaxially fixed to the upper surface of the small circular plate. The radius difference between the large circular plate and the small circular plate is greater than the length of the split magnetic ring. When the piston rod of each jack of the multi-head jack is in its maximum extension state, its top end extends beyond the edge of the large circular plate.

[0009] Furthermore, guide plates are fixedly provided on both sides of the upper surface of the large circular plate in the direction of movement of each split magnetic ring, and the split magnetic ring is slidably disposed between the guide plates.

[0010] Furthermore, the split magnetic ring includes a pointed rigid rod and a magnetic body. The bottom of the pointed rigid rod is provided with a flat surface that conforms to the surface of the large circular plate. One end of the pointed rigid rod is provided with a pointed tip and the other end is provided with a groove. The magnetic body is embedded in the inner wall of the groove of the pointed rigid rod. The top of the piston rod is provided with a top plate that is slidably disposed on the upper surface of the large circular plate. The top plate is an arc-shaped plate or a hemispherical head that conforms to the groove of the pointed rigid rod. The width of the top plate is smaller than the distance between the guide plates on both sides.

[0011] Furthermore, the sliding plate is fixedly connected to the bottom of the multi-head jack by screws.

[0012] Furthermore, one end of the boom is provided with an external threaded connection section and the other end is provided with an internal threaded connection hole. Multiple booms are connected to each other through the external threaded connection section and the internal threaded connection hole. The bottom boom is threadedly connected to the hydraulic pump through the external threaded connection section or the internal threaded connection hole.

[0013] Furthermore, the boom has length markings between the external threaded connection section and the internal threaded connection hole along its length.

[0014] Furthermore, the jacks of the multi-head jack are evenly distributed circumferentially and the piston rods extend horizontally outward.

[0015] Furthermore, each jack of the multi-head jack also includes a piston chamber, a spring, a piston, and a hydraulic port. The piston is slidably disposed in the piston chamber. One end of the piston rod is fixedly connected to the piston and the other end passes through the piston chamber. The spring is sleeved on the piston rod in the piston chamber. The hydraulic port is connected to the oil port of the hydraulic pump through a high-pressure pipe.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model is mainly composed of common components such as a hydraulic pump, a multi-head jack, a split magnetic ring, and a flat-push sliding plate. The overall structure is simple and clear, and the connection method of each component is clear, making it easy to assemble and disassemble. Through the ingenious cooperation and structural design of the multi-head jack, the flat-push sliding plate, and the split magnetic ring, the multi-head jack design allows multiple split magnetic rings to be pressed horizontally into the surrounding soil at the same time, which greatly improves the efficiency of setting up layered monitoring points. It is especially suitable for multi-depth monitoring points. Moreover, the hydraulic pump, multi-head jack, and flat-push sliding plate can be recycled and reused, so the cost is low.

[0018] 2. This utility model addresses the problems of installation difficulties of existing settlement magnetic rings in hard strata. It adopts a split magnetic ring with a pointed end, which can be smoothly anchored into the soil of hard strata under the strong push of a multi-head jack. This completely solves the problems of traditional magnetic rings relying on soft soil to reduce diameter and steel plates being unable to anchor into hard soil. As a result, it can be applied to strata with various geological conditions, expanding the application range of the monitoring device.

[0019] 3. This invention employs separate magnetic rings anchored individually into the soil within the borehole, without physical connection to the central device (suspender rod / hydraulic system / flat sliding plate). This avoids the data distortion problems caused by uneven settlement of existing settlement magnetic rings, such as magnetic ring tilting, PVC pipe bending, and magnetic ring getting stuck in the PVC pipe, thus ensuring the stability of the magnetic ring during settlement. Furthermore, the separate magnetic rings anchored into the soil do not rely on the density of the borehole backfill, eliminating the risk of incomplete backfilling and disturbance of the magnetic ring due to hard soil not shrinking the borehole. Simultaneously, the invention utilizes the flat sliding plate to guide the separate magnetic rings and the length markings along the length of the suspender rod, resulting in more accurate magnetic ring positioning. This ensures reliable monitoring data, providing more precise soil deformation information for engineering construction, facilitating timely adjustments to engineering measures, and reducing engineering accidents.

[0020] 4. The split magnetic ring of this utility model adopts an integrated structure consisting of a hydraulic pump, a multi-head jack and a flat sliding plate for installation. The installation process is highly mechanized and simple to operate, which effectively improves work efficiency.

[0021] In summary, this utility model, through its innovative combination of a split magnetic ring, a multi-head jack, and a flat-push sliding plate, perfectly solves the key problems of existing settlement magnetic rings in hard strata, such as unreliable installation, susceptibility to disturbance, and data distortion. It features simple structure, easy operation, accurate monitoring data, and wide adaptability to various strata, significantly improving the reliability of monitoring data and engineering practicality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model before it is anchored into the soil;

[0024] Figure 3 This is a schematic diagram of the structure of this utility model after it is anchored into the soil;

[0025] Figure 4 This is a schematic diagram of the installation of the split magnetic ring of this utility model;

[0026] Figure 5 This is an enlarged view of the jack of this utility model;

[0027] Figure 6 This is a three-dimensional enlarged view of the top plate of this utility model;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the flat-push sliding plate of this utility model;

[0029] Figure 8 This is a schematic diagram of the suspension rod structure of this utility model;

[0030] In the diagram, 1-hydraulic pump, 2-multi-head jack, 21-piston chamber, 22-spring, 23-piston rod, 24-top plate, 25-piston, 26-hydraulic port, 3-split magnetic ring, 31-pointed rigid rod, 32-magnetic body, 4-flat sliding plate, 41-small round plate, 42-large round plate, 43-guide plate, 5-lifting rod, 51-external threaded connection section, 52-internal threaded connection hole, 6-oil pipe, 7-drill hole. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this does not limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0032] like Figures 1 to 8As shown, the split-type press-fit magnetic ring stratified settlement measuring device of this utility model includes a hydraulic pump 1, a multi-head jack 2, a split magnetic ring 3, a sliding plate 4, a boom 5, and an oil pipe 6. The multi-head jack 2 is fixedly installed at the bottom of the hydraulic pump 1. The sliding plate 4 is a horizontally set circular plate and is coaxially fixed at the bottom of the multi-head jack 2. The split magnetic ring 3 is a rigid rod with a pointed end. Multiple split magnetic rings 3 are slidably placed on the upper surface of the sliding plate 4 with their pointed ends facing outwards, and the ends away from the pointed ends respectively abut against the piston rods 23 of the corresponding multi-head jacks 2. The boom 5 is set vertically and its bottom end is detachably fixedly connected to the hydraulic pump 1. One end of the oil pipe 6 is connected to the oil port of the hydraulic pump 1, and the other end is connected to the hydraulic system on the ground.

[0033] The flat sliding plate 4 includes a small circular plate 41 and a large circular plate 42. The small circular plate 41 is horizontally and coaxially fixed on the upper surface of the large circular plate 42. The multi-head jack 2 is coaxially fixed on the upper surface of the small circular plate 41. The radius difference between the large circular plate 42 and the small circular plate 41 is greater than the length of the split magnetic ring 3. When the piston rod 23 of each jack of the multi-head jack 2 is in its maximum extension state, the top end extends out of the edge of the large circular plate 42.

[0034] Guide plates 43 are fixedly provided on both sides of the moving direction of each split magnetic ring 3 on the upper surface of the large circular plate 42, and the split magnetic ring 3 is slidably disposed between the guide plates 43.

[0035] The split magnetic ring 3 includes a pointed rigid rod 31 and a magnetic body 32. The bottom of the pointed rigid rod 31 is provided with a flat surface that fits the surface of the large circular plate 42. One end of the pointed rigid rod 31 is provided with a pointed tip and the other end is provided with a groove. The magnetic body 32 is embedded in the inner wall of the groove of the pointed rigid rod 31. The top of the piston rod 23 is provided with a top plate 24 that is slidably disposed on the upper surface of the large circular plate 42. The top plate 24 is an arc-shaped plate or a hemispherical head that adapts to the groove of the pointed rigid rod 31. The width of the top plate 24 is smaller than the distance between the guide plates 43 on both sides.

[0036] The sliding plate 4 is fixedly connected to the bottom of the multi-head jack 2 by screws.

[0037] One end of the boom 5 is provided with an external threaded connection section 51 and the other end is provided with an internal threaded connection hole 52. Multiple booms 5 are connected to each other through the external threaded connection section 51 and the internal threaded connection hole 52. The bottom boom 5 is threadedly connected to the hydraulic pump 1 through the external threaded connection section 51 or the internal threaded connection hole 52.

[0038] The rod 5 has length markings between the external threaded connection section 51 and the internal threaded connection hole 52 along its length.

[0039] The jacks of the multi-head jack 2 are evenly distributed circumferentially and the piston rod 23 extends horizontally outward.

[0040] Each jack of the multi-head jack 2 also includes a piston chamber 21, a spring 22, a piston 25, and a hydraulic port 26. The piston 25 is slidably disposed in the piston chamber 21. One end of the piston rod 23 is fixedly connected to the piston 25 and the other end passes through the piston chamber 21. The spring 22 is sleeved on the piston rod 23 in the piston chamber 21. The hydraulic port 26 is connected to the oil port of the hydraulic pump 1 through a high-pressure pipe.

[0041] The working principle and process of this utility model are as follows:

[0042] like Figures 1 to 8 As shown, the hydraulic pump 1 and the three-head jack (i.e., multi-head jack 2) are purchased as finished products. The top plate 24 is made of a steel plate with a length of 3cm, a width of 3cm, and a thickness of 3mm. It is mechanically bent into an arc shape to form an arc plate with a height of 3cm, and then connected to the top of the piston rod 23 of the three-head jack using a welding process. The flat sliding plate 4 is formed by welding two circular steel plates with a thickness of 3mm. The smaller circular plate 41 is a circular steel plate with a diameter of 5cm, and the larger circular plate 42 is a circular steel plate with a diameter of 18cm. The two steel plates are coaxially stacked and welded to form the flat sliding plate 4. Three pairs of parallel guide plates 43 are evenly welded to the circumference of the upper surface of the stacked and welded larger circular plate 42. The side baffles of the guide plates 43 are made of steel plates with a length of 5cm, a width of 3cm, and a thickness of 3mm, forming guide plates 43 with a spacing of 3.2cm. The split magnetic ring 3 consists of a pointed steel plate (i.e., a pointed rigid rod 31) and a magnetic body 32. The pointed steel plate is made of a steel plate with a length of 5cm × width of 3cm × thickness of 3mm. The tail end of the steel plate is cut into an arc shape consistent with the top plate 24, while the head is cut into a pointed shape. The magnetic body 32 is tied to the tail end of the pointed steel plate by drilling holes.

[0043] When installing the split magnetic rings 3, first use a drilling rig to form a 20cm diameter borehole 7. Place the three split magnetic rings 3 between the corresponding guide plates 43 on the upper surface of the flat sliding plate 4. The arc-shaped tail of the split magnetic rings 3 should be completely aligned with the top plate 24 on the piston rod 23 at the front end of the three-headed jack. Extend the boom 5 downwards to the designated position, pressurize the hydraulic pump 1 using the oil pipe 6, and use the three-headed jack to push the top plate 24 at the top of the piston rod 23 to completely press the split magnetic rings 3 into the soil of the borehole 7. Then retract the jack and use the boom 5 to lift the hydraulic pump 1. Repeat the above steps to complete the installation of the split magnetic rings 3 in the entire borehole 7. Then, bury a 5cm diameter PVC pipe and backfill with soil. Finally, use a magnetic probe, tape measure, and inductive detection device to take readings and record the initial burial depth of the split magnetic rings 3.

[0044] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A split-type press-fit magnetic ring stratified settlement measuring device, characterized in that: The system includes a hydraulic pump (1), a multi-head jack (2), a split magnetic ring (3), a sliding plate (4), a boom (5), and an oil pipe (6). The multi-head jack (2) is fixedly installed at the bottom of the hydraulic pump (1). The sliding plate (4) is a horizontally set circular plate and is coaxially fixed at the bottom of the multi-head jack (2). The split magnetic ring (3) is a rigid rod with a pointed end. Multiple split magnetic rings (3) are slidably placed on the upper surface of the sliding plate (4) with their pointed ends facing outwards, and the ends away from the pointed ends respectively abut against the piston rods (23) of the corresponding multi-head jacks (2). The boom (5) is set vertically and its bottom end is detachably fixedly connected to the hydraulic pump (1). One end of the oil pipe (6) is connected to the oil port of the hydraulic pump (1), and the other end is connected to the hydraulic system on the ground.

2. The split-type press-fit magnetic ring stratified settlement measuring device according to claim 1, characterized in that: The flat sliding plate (4) includes a small circular plate (41) and a large circular plate (42). The small circular plate (41) is horizontally and coaxially fixed on the upper surface of the large circular plate (42). The multi-head jack (2) is coaxially fixed on the upper surface of the small circular plate (41). The radius difference between the large circular plate (42) and the small circular plate (41) is greater than the length of the split magnetic ring (3). When the piston rod (23) of each jack of the multi-head jack (2) is in its maximum extension state, the top end extends out of the edge of the large circular plate (42).

3. The split-type press-fit magnetic ring stratified settlement measuring device according to claim 2, characterized in that: The upper surface of the large circular plate (42) is fixedly provided with guide plates (43) on both sides of the moving direction of each split magnetic ring (3), and the split magnetic ring (3) is slidably disposed between the guide plates (43).

4. The split-type press-fit magnetic ring stratified settlement measuring device according to claim 3, characterized in that: The split magnetic ring (3) includes a pointed rigid rod (31) and a magnetic body (32). The bottom of the pointed rigid rod (31) is provided with a plane that fits the surface of the large circular plate (42). One end of the pointed rigid rod (31) is provided with a pointed tip and the other end is provided with a groove. The magnetic body (32) is embedded in the inner wall of the groove of the pointed rigid rod (31). The top of the piston rod (23) is provided with a top plate (24) that is slidably disposed on the upper surface of the large circular plate (42). The top plate (24) is an arc-shaped plate or a hemispherical head that is adapted to the groove of the pointed rigid rod (31). The width of the top plate (24) is smaller than the distance between the guide plates (43) on both sides.

5. The split-type press-fit magnetic ring stratified settlement measuring device according to claim 2, characterized in that: The flat plate (4) is fixedly connected to the bottom of the multi-head jack (2) by screws.

6. The split-type press-fit magnetic ring stratified settlement measuring device according to claim 1, characterized in that: One end of the boom (5) is provided with an external threaded connection section (51) and the other end is provided with an internal threaded connection hole (52). Multiple booms (5) are connected to each other through the external threaded connection section (51) and the internal threaded connection hole (52). The bottom boom (5) is threadedly connected to the hydraulic pump (1) through the external threaded connection section (51) or the internal threaded connection hole (52).

7. The split-type press-fit magnetic ring stratified settlement measuring device according to claim 6, characterized in that: The rod (5) has length markings between the external threaded connection section (51) and the internal threaded connection hole (52) along its length.

8. The split-type press-fit magnetic ring stratified settlement measuring device according to any one of claims 1 to 7, characterized in that: The multi-head jack (2) has jacks that are evenly distributed circumferentially and piston rods (23) that extend horizontally outward.

9. The split-type press-fit magnetic ring stratified settlement measuring device according to claim 8, characterized in that: Each jack of the multi-head jack (2) also includes a piston chamber (21), a spring (22), a piston (25), and a hydraulic port (26). The piston (25) is slidably disposed in the piston chamber (21). One end of the piston rod (23) is fixedly connected to the piston (25) and the other end passes through the piston chamber (21). The spring (22) is sleeved on the piston rod (23) in the piston chamber (21). The hydraulic port (26) is connected to the oil port of the hydraulic pump (1) through a high-pressure pipe.

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