Ground surface settlement monitoring device

Abstract

The utility model discloses a ground surface settlement monitoring device which comprises a horizontal plate and a transparent protective cover arranged above the horizontal plate, a graduated scale is arranged on the outer wall of the protective cover, an observation rod is arranged in the protective cover, the observation rod penetrates through the center of the horizontal plate and is movably connected with the horizontal plate, a settlement plate is arranged at the bottom end of the observation rod, and a reading mark post is arranged at the top end of the observation rod. Two ends of the reading marker post are slidably connected with the protective cover. During use, the settlement plate is located on the ground surface, along with ground surface settlement, the settlement plate drives the observation rod to descend, the reading marker post at the top end of the observation rod moves downwards, the settlement amount is obtained by reading the scales on the protective cover, and compared with the prior art, reading is convenient, and reading errors are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of road surface settlement monitoring, and specifically relates to a surface settlement monitoring device. Background Technology

[0002] When the ground settlement monitoring device is used for testing, a bedrock marker is buried at a suitable depth in the ground, with the level head and observation plate exposed. The observation plate rests on the ground. When the ground settles, the observation plate settles with the ground, causing the bedrock marker to rise and extend. Then, by carrying measuring tools to a suitable position, the relative height between the level head and the reference object can be measured to observe the ground settlement.

[0003] Existing settlement monitoring devices include a conduit, a detection rod, and a steel plate. The conduit is inserted into the ground, and the detection rod passes through and is fixed to the conduit. The steel plate is installed on the side of the conduit away from the ground, and has a through hole for the conduit to pass through. A pointer assembly is installed on the side wall of the through hole. The steel plate, mounted on the conduit, rises and falls with ground settlement, and the settlement amount is displayed on the monitoring rod, reducing the error between the settlement measured by the detection rod and the actual settlement. However, because the steel plate is close to the ground, reading the values ​​on the detection rod requires looking down and at the pointer and scale at an angle, which can be inconvenient and potentially lead to reading errors. Utility Model Content

[0004] The purpose of this invention is to provide a land subsidence monitoring device that solves the problems of difficulty in reading data on the detection rod and the existence of reading errors.

[0005] The technical solution adopted by this utility model is a surface subsidence monitoring device, including a horizontal plate and a transparent protective cover above the horizontal plate. A scale is provided on the outer wall of the protective cover, and an observation rod is provided inside the protective cover. The observation rod passes through the center of the horizontal plate and is movably connected to it. A subsidence plate is provided at the bottom of the observation rod, and a reading rod is provided at the top of the observation rod. The two ends of the reading rod are slidably connected to the protective cover.

[0006] Preferably, the end of the reading rod is recessed with a groove, and the outer end of the groove is provided with a rotating shaft. A ball is rotatably connected to the rotating shaft. The ball extends out of the reading rod and rolls with the inner wall of the protective cover. A reading pointer is provided above the ball. One end of the reading pointer is connected to the middle of the top of the reading rod, and the other end extends horizontally towards the inner wall of the protective cover without extending out of the outer end of the ball.

[0007] Preferably, the protective cover has multiple connecting plates arranged outward in the circumferential direction at the bottom of the side wall of the protective cover. The multiple connecting plates are evenly spaced, and connecting holes are opened on the connecting plates. Mounting holes are opened on the horizontal plate corresponding to the connecting plates. Screws are used to fix the protective cover and the horizontal plate through the connecting holes and mounting holes.

[0008] Preferably, a support rod is fixedly connected to the outer side of the horizontal plate. The support rod is a telescopic rod. A sliding sleeve is fixedly connected to the other end of the support rod. The sliding sleeve is movably fitted onto the marker. A support base is fixedly connected to the bottom end of the marker. A locking screw is threaded onto the side wall of the sliding sleeve. The sliding sleeve is tightened onto the marker by screwing in the locking screw.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a protective cover with graduations on the horizontal plate, the top of the observation rod is provided with a reading rod that is slidably connected to the inner wall of the protective cover, and the bottom is provided with a settlement plate. When in use, the settlement plate is located on the ground surface. As the ground surface subsides, the settlement plate carries the observation rod down, and the reading rod at the top of the observation rod moves down. The settlement amount is obtained by reading the graduations on the protective cover. Compared with the prior art, the reading is more convenient and the reading error is reduced. In addition, the setting of the protective cover solves the measurement error caused by the observation rod being affected by wind and rain. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a land subsidence monitoring device;

[0011] Figure 2 This is a top view of the end of the reading pointer;

[0012] Figure 3 This is a top view of the protective shield. Detailed Implementation

[0013] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0014] Example 1

[0015] like Figure 1-3 As shown, a land subsidence monitoring device includes a horizontal plate 1 and a transparent protective cover 2 positioned above the horizontal plate 1. A scale 3 is provided on the outer wall of the protective cover 2, and an observation rod 4 is located inside the protective cover 2. The observation rod 4 passes through the center of the horizontal plate 1 and is movably connected to it. The observation rod 4 can move up and down along the central hole of the horizontal plate 1. A settlement plate 5 is located at the bottom of the observation rod 4, and a reading pointer 6 is located at the top of the observation rod 4. The two ends of the reading pointer 6 are slidably connected to the protective cover 2. In use, the settlement plate 5 is located at the ground surface. As the ground subsides, the settlement plate 5 lowers along with the observation rod 4, causing the reading pointer 6 at the top of the observation rod 4 to move downwards. The subsidence amount is obtained by reading the scale changes on the protective cover 2, making reading convenient and reducing reading errors. Furthermore, the protective cover 2 solves the measurement error caused by wind and rain affecting the observation rod 4. The settlement plate 5 increases the contact area between the observation rod 4 and the ground surface, and its downward movement with ground subsidence makes subsidence monitoring more objective and accurate.

[0016] Furthermore, the reading rod 6 has a recessed groove 7 at its end, and a rotating shaft 8 is provided at the outer end of the groove 7. A ball bearing 9 is rotatably connected to the rotating shaft 8. The ball bearing 9 extends out of the reading rod 6 and rolls with the inner wall of the protective cover 2. By rolling with the inner wall of the protective cover 2, the friction between the reading rod 6 and the inner wall of the protective cover is reduced, and the accuracy of the sedimentation measurement is improved. A reading pointer 10 (which does not contact the ball bearing) is provided above the ball bearing 9. One end of the reading pointer 10 is connected to the middle of the top of the reading rod 2, and the other end extends horizontally towards the inner wall of the protective cover 2 without extending out of the outer end of the ball bearing 9. The slender structure of the end of the reading pointer 10 is conducive to accurate reading.

[0017] Multiple connecting plates 11 are provided outward in the circumferential direction at the bottom of the side wall of the protective cover 2. The multiple connecting plates 11 are evenly spaced. Connecting holes are opened on the connecting plates 11. Mounting holes are opened on the horizontal plate 1 corresponding to the connecting plates 11. The protective cover 2 and the horizontal plate 1 are fixedly connected by screws passing through the connecting holes and mounting holes, which makes the installation firm and convenient.

[0018] Furthermore, a support rod 12 is fixedly connected to the outer side of the horizontal plate 1. The support rod 12 is a telescopic rod, and a sliding sleeve 13 is fixedly connected to the other end of the support rod 12. The sliding sleeve 13 is movably fitted onto the marker rod 14. A support base 15 is fixedly connected to the bottom end of the marker rod 14. A locking screw 16 is threadedly connected to the side wall of the sliding sleeve 13. The sliding sleeve 13 is tightened onto the marker rod 14 by screwing in the locking screw 16. In use, the support base 15 is placed in a relatively stable geological location, and the horizontal plate 1 is placed at the monitoring point using the telescopic support rod 12. This prevents measurement errors caused by settlement of the horizontal plate 1. Multiple horizontal plates can be connected to the marker rod simultaneously for multi-directional monitoring, improving monitoring efficiency.

[0019] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. A surface subsidence monitoring device, characterized in that, It includes a horizontal plate (1) and a transparent protective cover (2) located above the horizontal plate (1). A scale (3) is provided on the outer wall of the protective cover (2). An observation rod (4) is provided inside the protective cover (2). The observation rod (4) passes through the center of the horizontal plate (1) and is movably connected to it. A settling plate (5) is provided at the bottom of the observation rod (4). A reading rod (6) is provided at the top of the observation rod (4). The two ends of the reading rod (6) are slidably connected to the protective cover (2). The horizontal plate (1) is fixedly connected to the support rod (12) on the outside. The other end of the support rod (12) is fixedly connected to the sliding sleeve (13). The sliding sleeve (13) is movably sleeved on the marker (14). The bottom end of the marker (14) is fixedly connected to the support seat (15). The side wall of the sliding sleeve (13) is threadedly connected to the locking screw (16). The sliding sleeve (13) is tightened on the marker (14) by screwing in the locking screw (16).

2. The surface subsidence monitoring device according to claim 1, characterized in that, The end of the reading rod (6) is recessed with a groove (7), and the outer end of the groove (7) is provided with a rotating shaft (8). A ball (9) is rotatably connected to the rotating shaft (8). The ball (9) extends out of the reading rod (6) and rolls with the inner wall of the protective cover (2). A reading pointer (10) is provided above the ball (9). One end of the reading pointer (10) is connected to the middle of the top of the reading rod (6), and the other end extends horizontally to the inner wall of the protective cover (2) and does not extend out of the outer end of the ball (9).

3. The surface subsidence monitoring device according to claim 1, characterized in that, The protective cover (2) has multiple connecting plates (11) arranged outward in the circumferential direction at the bottom of the side wall. The multiple connecting plates (11) are evenly spaced. Connecting holes are opened on the connecting plates (11), and mounting holes are opened on the horizontal plate (1) corresponding to the connecting plates (11). The protective cover (2) and the horizontal plate (1) are fixedly connected by screws passing through the connecting holes and mounting holes.

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