Novel ground subsidence measuring point protection device

Abstract

The embodiment of the utility model provides a novel ground subsidence measuring point protection device which comprises a body and a top cover, the body comprises a hollow cylindrical barrel and a bottom side plate integrally connected to the bottom of the barrel, and the top cover is detachably connected with the top of the body; the bottom side plate is further provided with a vertically-through positioning hole, and the diameter of the positioning hole is larger than the diameter of a to-be-protected measuring point mark. According to the technical scheme, the novel ground subsidence measuring point protection device can better bear supporting of a lower soil body, is firm in fixation and not prone to sinking, the problem that an external road surface is pressed and deformed due to overall sinking generally existing in a ground subsidence measuring point protection device in the prior art is solved, and meanwhile it is guaranteed that measuring point identification and positioning are accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering monitoring technical field especially relates to a novel ground subsidence measuring point protection device. BACKGROUND

[0002] In the process of urban rail transit construction, when the subway foundation pit and the interval are adjacent to or cross the risk source, the ground subsidence of the surrounding environment and the project itself needs to be monitored. The conventional ground subsidence measuring point is a well type cylinder type measuring point, which realizes the observation of ground subsidence by embedding a measuring point mark (for example, a reinforcing bar) after a coring machine punches a hole (which can be called a measuring point hole) through the road hard shell layer (water stable layer). The protection device (ground subsidence measuring point protection device) is mostly a capped cylindrical structure as shown in the figure, which constrains the surrounding soil by embedding a cylinder to protect the measuring point in the measuring point hole from external extrusion deformation and ensure the reasonable measurement limit of the measuring point. Figure 4

[0003] In the process of implementing the utility model, the inventors found that at least the following problems exist in the prior art:

[0004] After the conventional ground subsidence measuring point protection device is embedded, it is easy to have the problem of overall downward sinking, which causes the upper hole of the measuring point hole to lose constraint, and the road surface will deform and shrink under long-term rolling and be damaged. Therefore, how to avoid the overall sinking of the ground subsidence measuring point protection device and the resulting compression deformation of the external road surface is a problem to be solved. UTILITY MODEL CONTENTS

[0005] The utility model embodiment provides a novel ground subsidence measuring point protection device to solve the problem of overall sinking of the existing ground subsidence measuring point protection device and the resulting compression deformation of the external road surface.

[0006] To achieve the above purpose, the utility model embodiment provides a novel ground subsidence measuring point protection device, which comprises a body and a top cover, the body comprises a hollow cylindrical cylinder and a bottom side plate connected to the bottom of the cylinder, and the top cover is connected to the top of the body in a detachable manner; a positioning hole penetrating up and down is further formed in the bottom side plate, and the diameter of the positioning hole is greater than the diameter of the measuring point mark to be protected.

[0007] Further, the positioning hole is formed in the middle part of the bottom side plate.

[0008] Further, the novel ground subsidence measuring point protection device further comprises a rotating shaft; the cylinder comprises a boss extending inward, the bottom of the rotating shaft is connected to the boss, the top of the rotating shaft is hingedly connected to the top cover, and the hinge point of the rotating shaft and the top cover is away from the center of the top cover.

[0009] Further, the top cover is a plate structure, and the bottom surface of the top cover is attached to the upper edge of the cylinder.

[0010] ​Further, the bottom side plate comprises a center part and an outer edge part, the center part is a horizontally placed circular plate structure, the outer edge part is a circular conical ring structure with a large upper part and a small lower part, the bottom end of the outer edge part is fixedly connected with the outer edge of the center part, and the top end of the outer edge part is fixedly connected with the lower edge of the cylinder body.

[0011] Further, the outer diameter of the body is 120mm, the height of the body is 10-120mm, and the hole diameter of the positioning hole is 30mm.

[0012] The above technical scheme has the following beneficial effects:

[0013] In the technical scheme of the utility model, the bottom of the existing ground subsidence measuring point protection device is changed from an open structure to a closed structure, which eliminates the problem of the existing sleeve thin-wall structure cutting the lower soil body and causing the ground subsidence measuring point protection device to move downward and sink, can make the top of the ground subsidence measuring point protection device keep flush with the road surface, and avoids the compression deformation of the top part of the measuring point hole.

[0014] In addition, the utility model also has the following characteristics:

[0015] 1. The bottom side plate can be further designed as a conical shape, which can play a positioning and guiding role when placed and can better bear the support of the lower soil body, so that the novel subsidence measuring point protection device is not easy to sink;

[0016] 2. After the conventional ground subsidence measuring point protection device is buried, the buried measuring point mark position will also change randomly due to the strength of the hammering, causing the top position of the measuring point mark to be random, and if the top is at the edge of the measuring point hole, the ruler cannot be read. After the technical scheme is adopted, the middle part of the bottom side plate is designed with a positioning hole for the measuring point mark to pass through, so that the measuring point mark can be located at the center of the ground subsidence measuring point protection device, which can ensure that the measuring point mark cannot be read due to the position being too close to the edge, and the ruler can rotate freely on the top of the measuring point, which can have more angles facing the level meter and increase the success rate of monitoring reading;

[0017] 3. In the conventional ground subsidence measuring point protection device, the protection cover and the sleeve are connected by a chain or a hinge, which is easy to break and rust, causing the protection cover to fall off and cannot be opened, etc. In the present application, the body and the top cover are coaxially connected through an anchor bolt (pivot), which increases the stability of the connection and is more reliable than the iron chain connection. At the same time, only the top cover needs to be lifted and rotated to open, which is more flexible than the hinge connection and is not easy to rust, reducing the damage to the measuring point (the hinge is not easy to be damaged by vehicles).

[0018] 4. In conventional ground settlement monitoring and protection devices, the sleeves are cylindrical with uniform dimensions, making stacking for transport impossible. This results in large volume, low transport efficiency, and high logistics costs. However, this technical solution utilizes a conical design that allows for cross-stacking of finished products in a fixed quantity, facilitating logistics and transportation, significantly reducing transport volume, and thus lowering logistics costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a novel ground settlement measuring point protection device according to an embodiment of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of a novel ground settlement measuring point protection device according to an embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram illustrating the application of a novel ground settlement measuring point protection device according to an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram illustrating the application of existing ground settlement monitoring point protection devices.

[0024] Figure 5 This is a schematic diagram of multiple new types of ground settlement monitoring point protection devices stacked together;

[0025] Reference numerals: 1. Cylinder body; 11. Boss; 2. Bottom side plate; 21. Center part; 22. Outer edge part; 3. Top cover; 4. Rotating shaft; 5. Positioning hole; 6. Measuring point mark; 7. Road surface; 8. Subsoil; 9. Sleeve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The inventor discovered through research that, for example Figure 4The reason why the conventional ground subsidence measuring point protection device shown is easy to sink is that: because the thickness of the road hard shell layer (water stable layer) is not uniform, the undisturbed soil and the backfill soil are mostly loose soil, after the measuring point hole is formed and the conventional ground subsidence measuring point protection device is buried, because the lower edge of the sleeve 9 of the ground subsidence measuring point protection device is a thin-walled structure, the lower soil body 8 is easily cut, the whole ground subsidence measuring point protection device is caused to sink downward, a cavity is formed in the inner side of the upper hole of the measuring point hole, the road surface outside the measuring point hole is deformed and shrunk under long-term rolling, and even collapses.

[0028] To solve the problem, as shown in Figure 1 、 Figure 2 The utility model discloses a novel ground subsidence measuring point protection device, including body and top cover 3, the body includes the hollow cylinder of cylinder body 1 and is connected to the bottom of cylinder body 1 bottom side plate 2, top cover 3 is detachably connected with the top of body, bottom side plate 2 still has the positioning hole 5 that goes up and down through, and the aperture of positioning hole 5 is greater than the diameter of measuring point mark 6. In application, first, the hardened road is drilled into the measuring point hole with the coring machine, then the soil in the measuring point hole is filled to the position of bottom side plate 2, the novel ground subsidence measuring point protection device is put in, so that bottom side plate 2 contacts lower soil body 8, then is tamped, makes the top of novel ground subsidence measuring point protection device with the height of road surface 7. Because no longer have the thin-walled structure of cutting lower soil body 8 directly, therefore novel ground subsidence measuring point protection device will not sink, the inner side of measuring point hole will not form cavity, and therefore the surrounding road surface 7 will not shrink and collapse.

[0029] Meanwhile, in the technical scheme, the body and the top cover 3 are made of metal material or injection-molded ABS engineering plastic parts.

[0030] Further, the positioning hole 5 is arranged in the middle of the bottom side plate 2, so that the measuring point mark 6 can be accurately arranged at the center of the measuring point hole, the steel ruler can be conveniently placed, the edge of the steel ruler can be freely placed on the measuring point mark 6 and can be freely rotated without direction limitation, and measurement is facilitated.

[0031] Further, the novel ground subsidence measuring point protection device further comprises a rotating shaft 4; the cylinder body 1 comprises a boss 11 extending inwardly, the bottom of the rotating shaft 4 is connected to the boss 11, the top of the rotating shaft 4 is hingedly connected to the top cover 3, and the hinge point of the rotating shaft 4 and the top cover 3 is away from the center of the top cover 3, that is, the hinge point is eccentric. In the design, the top cover 3 can be opened in a rotating manner as needed, which is more convenient than the connection mode of the previous protective cover, and is not easy to rust and damage. During maintenance, the rotating shaft 4 can be lubricated by adding oil and the like, so that the top cover 3 can be smoothly opened.

[0032] Furthermore, the top cover 3 is a plate-like structure, and the bottom surface of the top cover 3 is attached to the upper edge of the cylinder 1. In existing designs, the protective cover of some ground settlement measuring point protection devices can be flipped open. Before measurement, it is flipped open to a certain angle (e.g., 120°) to expose the internal measuring point marking 6. After measurement, the protective cover needs to be reset. If it is forgotten to be reset, the protective cover may be accidentally crushed or stepped on. In this technical solution, the top cover 3 is opened by rotation, and it is a plate-like structure attached to the upper edge of the cylinder 1. Therefore, after it is opened, it will be attached to the road surface 7, and even if it is forgotten to be closed, it will not be accidentally crushed.

[0033] Furthermore, as a preferred embodiment, the bottom side plate 2 includes a central portion 21 and an outer edge portion 22. The central portion 21 is a horizontally placed circular plate-like structure, and the outer edge portion 22 is a conical annular structure that is larger at the top and smaller at the bottom. The bottom end of the outer edge portion 22 is fixedly connected to the outer edge of the central portion 21, and the top end of the outer edge portion 22 is fixedly connected to the lower edge of the cylinder 1. In this case, the conical structure can play a guiding role, making it easier to place, and it can better support the underlying soil 8, making the new ground settlement measuring point protection device less prone to sinking. At the same time, after adopting this conical structure, such as Figure 5 As shown, the finished products can be stacked in a cross manner, which makes logistics and transportation easier and reduces the transportation volume, thereby reducing logistics costs (Note: When the finished products are stacked at the factory, the pivot 4 and the top cover 3 have not yet been assembled, and the position of the boss 11 has also been optimized so that it will not affect the stacking).

[0034] Furthermore, in one specific embodiment, the outer diameter of the body is 120mm, the height of the body is 10-120mm, and the diameter of the positioning hole 5 is 30mm.

[0035] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0036] For any person skilled in the art, various modifications of the embodiments described above will be readily apparent and the generic principles defined herein can be applied to other embodiments without departing from the spirit and scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0037] The above detailed description of the specific implementation of the present application, the purpose, technical solutions and beneficial effects of the present application have been further described in detail, it should be understood that the above description is only a specific implementation of the present application, and is not used to limit the protection scope of the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A new type of ground subsidence measuring point protection device, characterized in that, The utility model relates to a kind of measuring point marking device, including body and top cover (3), the body includes hollow cylindrical barrel (1) and connect to the bottom side plate (2) of the barrel (1) bottom, the top cover (3) is detachably connected with the top of the body;Positioning hole (5) is further provided on the bottom side plate (2) and passes through, and the aperture of the positioning hole (5) is greater than the diameter of measuring point mark (6).

2. The new ground subsidence measuring point protection device according to claim 1, characterized in that, The positioning hole (5) is provided in the middle of the bottom side plate (2).

3. The new ground subsidence measuring point protection device according to claim 1, characterized in that, It further includes rotating shaft (4);The barrel (1) includes the boss (11) that projects to inboard side, the bottom of the rotating shaft (4) is connected on the boss (11), the top of the rotating shaft (4) is hinged with the top cover (3), and the hinge point of the rotating shaft (4) and the top cover (3) is away from the center of the top cover (3).

4. The novel ground subsidence measuring point protection device according to claim 3, characterized in that, The top cover (3) is plate structure, and the bottom surface of the top cover (3) is attached with the upper edge of the barrel (1).

5. The new ground subsidence measuring point protection device according to claim 1, characterized in that, The bottom side plate (2) includes center part (21) and outer edge part (22), the center part (21) is horizontally placed circular plate structure, the outer edge part (22) is the circular conical ring structure that is big down small, the bottom end of the outer edge part (22) is fixedly connected with the outer edge of the center part (21), and the top end of the outer edge part (22) is fixedly connected with the lower edge of the barrel (1).

6. The novel ground subsidence measuring point protection device according to claim 1, characterized in that, The outer diameter of the body is 120mm, the height of the body is 10-120mm, and the aperture of the positioning hole (5) is 30mm.

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