A formation settlement monitoring layered marker bottom plug

Abstract

The utility model relates to stratum subsidence monitoring equipment technical field, and specifically is a stratum subsidence monitoring layered mark bottom plug, including anchor tube, the top fixedly connected with the connecting flange of anchor tube, the inside of anchor tube is equipped with fixed structure, and the fixed structure includes the guide head, and the bottom of anchor tube is equipped with the guide head, and the end fixedly connected with the thread sleeve of guide head, a plurality of grouting mouths are established in the side of thread sleeve, and the top side of thread sleeve is connected with the drive sleeve in screw, and the inside of anchor tube is slidably connected with drive sleeve, and the side of drive sleeve is established with the toothing groove, and the side of anchor tube is rotatably connected with the expansion rod, and the end of expansion rod is engaged with the side of drive sleeve through the toothing groove, through setting up the expansion rod that can unfold in the side of anchor tube, the expansion rod of horizontal can provide stronger fixed effect for mark bottom plug, avoids the longitudinal deviation after the loosening between anchor tube wall and cement.

Description

Technical Field

[0001] This utility model relates to a marker bottom insertion rod, specifically a stratified marker bottom insertion rod for monitoring ground subsidence, belonging to the technical field of ground subsidence monitoring equipment. Background Technology

[0002] Ground settlement monitoring is a key technical means to ensure urban safety, assess geological disaster risks, and guide the construction of major projects. Layered beacon systems, as a precise elevation monitoring facility, can accurately measure the compression or rebound of soil layers at different depths underground, and are the core device for obtaining ground settlement profile data. The measurement benchmark of the layered beacon system is established on a beacon base stake. This stake stake is anchored in stable strata tens to hundreds of meters underground, and its core function is to provide an absolutely static reference point. The upper beacon pole (measuring tube) extends this benchmark to the ground surface. By periodically measuring the change in the height difference between the surface probe and the top of the beacon pole, the settlement of the target stratum can be calculated.

[0003] Currently, grouting is commonly used to fix the anchor rods to the bottom of the hole by solidifying cement. However, when nearby construction projects (such as vibration or precipitation) or minor slippage occurs in the strata, the anchor body, which is only bonded by cement grout, has limited pull-out and shear resistance, and may experience slow creep or sudden failure. Utility Model Content

[0004] The purpose of this utility model is to provide a bottom insertion rod for monitoring stratum settlement in order to solve the above-mentioned problems. By setting an expandable expansion rod on the side of the anchoring pipe, the bottom insertion rod is placed at the bottom of the hole, and the expansion rod is expanded before cement grout is poured. After the cement has completely solidified, the lateral expansion rod can provide a stronger fixing effect for the bottom insertion rod, and prevent longitudinal displacement after the anchoring pipe wall and cement loosen.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a bottom insertion rod for monitoring strata settlement includes an anchoring pipe, a connecting flange fixedly connected to the top end of the anchoring pipe, a fixing structure provided on the inner side of the anchoring pipe, the fixing structure including a guide head, a guide head provided at the bottom end of the anchoring pipe, a threaded sleeve fixedly connected to the end of the guide head, multiple grouting ports opened on the side of the threaded sleeve, a driving sleeve threadedly connected to the top side of the threaded sleeve, the driving sleeve slidably connected to the inner side of the anchoring pipe, a toothed groove opened on the side of the driving sleeve, an expansion rod rotatably connected to the side of the anchoring pipe, the end of the expansion rod engaging with the side of the driving sleeve through the toothed groove, and a locking structure provided on the top side of the anchoring pipe.

[0006] Preferably, the drive sleeve has a cuboid structure, and multiple expansion rods are rotatably connected to the side of the anchoring tube. A torsion spring is fixedly connected between the expansion rod and the anchoring tube.

[0007] Preferably, the guide head has a conical structure, and a plurality of insert plates are fixedly connected to the bottom end of the guide head, the plurality of insert plates being arranged in a ring.

[0008] Preferably, a plurality of positioning blocks are slidably connected to the top side of the guide head, and a first spring is fixedly connected between the positioning blocks and the guide head.

[0009] Preferably, the bottom side of the anchoring pipe is provided with multiple positioning grooves, the end of the positioning block has a hemispherical structure, and the end of the positioning block abuts against the anchoring pipe through the positioning grooves.

[0010] Preferably, the locking structure includes a locking block, the inner side of the anchoring tube is slidably connected to the locking block, and the side of the driving sleeve is provided with multiple locking grooves.

[0011] Preferably, a second spring is fixedly connected between the locking block and the anchoring tube, and an abutment block is fixedly connected to the side of the locking block.

[0012] Preferably, an adjusting ring is rotatably connected to the side of the anchoring pipe. The adjusting ring has multiple rod-shaped structures, and the rod-shaped structures on the inner side of the adjusting ring abut against the corresponding contact blocks. The contact blocks are cylindrical in shape.

[0013] Preferably, a limiting groove is provided on the side of the anchoring pipe, and the adjusting ring is slidably connected to the anchoring pipe through the limiting groove.

[0014] The beneficial effects of this utility model are as follows: First, a tapered guide head is provided on the bottom side of the anchoring pipe, which facilitates the movement of the marker rod in the hole. The connecting flange at the top of the anchoring pipe is used to connect with the upper marker rod. After the marker rod is lowered to the bottom of the hole, the anchoring pipe is rotated. At this time, due to the threaded connection between the inner side of the anchoring pipe and the threaded sleeve, the driving sleeve on the inner side of the anchoring pipe will gradually slide against the anchoring pipe under the traction of the threaded sleeve. The side of the driving sleeve is provided with a toothed groove. As the driving sleeve moves, the toothed groove and the... The expansion rod that engages with the drive sleeve will rotate on the side of the anchoring pipe until it reaches a horizontal position. At this point, the operator can inject cement grout into the inside of the anchoring pipe. Due to the lifting of the anchoring pipe, the grouting port opened on the side of the threaded sleeve is also exposed, ensuring that the cement grout can be injected from the bottom of the hole. After the injected cement has completely solidified, the horizontally extended expansion rod allows the anchoring pipe to resist forces from different directions, ensuring the stability of the overall position of the benchmark insertion rod in the formation and ensuring the accuracy of the measurement data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the connection structure between the anchoring pipe and the guide head of this utility model; Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A. Figure 4 for Figure 2 The diagram shown is an enlarged view of the structure of section B. Figure 5 This is a schematic diagram of the connection structure between the anchoring pipe and the adjusting ring of this utility model.

[0016] In the diagram: 1. Anchor pipe; 2. Connecting flange; 3. Fixing structure; 301. Guide head; 302. Insert plate; 303. Expansion rod; 304. Drive sleeve; 305. Toothed groove; 306. Torsion spring; 307. Threaded sleeve; 308. Grouting port; 309. Positioning block; 310. First spring; 311. Positioning groove; 4. Locking structure; 401. Adjusting ring; 402. Locking block; 403. Second spring; 404. Abutment block; 405. Locking groove; 406. Limiting groove. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-5 As shown, a ground settlement monitoring stratification marker bottom insertion rod includes an anchor pipe 1. A connecting flange 2 is fixedly connected to the top end of the anchor pipe 1. A fixing structure 3 is provided on the inner side of the anchor pipe 1. The fixing structure 3 includes a guide head 301. The bottom end of the anchor pipe 1 is provided with the guide head 301. A threaded sleeve 307 is fixedly connected to the end of the guide head 301. Multiple grouting ports 308 are opened on the side of the threaded sleeve 307. A drive sleeve 304 is threadedly connected to the top side of the threaded sleeve 307. The drive sleeve 304 is slidably connected to the inner side of the anchor pipe 1. A toothed groove 305 is opened on the side of the drive sleeve 304. An expansion rod 303 is rotatably connected to the side of the anchor pipe 1. The end of the expansion rod 303 engages with the side of the drive sleeve 304 through the toothed groove 305. A locking structure 4 is provided on the top side of the anchor pipe 1.

[0019] As a technical optimization of this utility model, the driving sleeve 304 has a cuboid structure. Multiple expansion rods 303 are rotatably connected to the side of the anchoring pipe 1. A torsion spring 306 is fixedly connected between the expansion rods 303 and the anchoring pipe 1. The guide head 301 has a conical structure. Multiple insert plates 302 are fixedly connected to the bottom end of the guide head 301, arranged in a ring. Multiple positioning blocks 309 are slidably connected to the top side of the guide head 301. A first spring 310 is fixedly connected between the positioning blocks 309 and the guide head 301. Multiple positioning grooves 311 are opened on the bottom side of the anchoring pipe 1. The end of the positioning block 309 has a hemispherical structure. The end of the positioning block 309 is connected to a fixed... The groove 311 abuts against the anchor pipe 1. After the benchmark insertion rod is inserted into the bottom of the hole, in order to facilitate the rotation of the anchor pipe 1, the bottom end of the guide head 301 is provided with multiple insert plates 302 arranged in a ring. Through the weight of the benchmark insertion rod and the setting of the insert plates 302, the ends of the insert plates 302 will be appropriately inserted into the soil layer, so that the guide head 301 can maintain a stable state when the anchor pipe 1 rotates. Then, the expansion rod 303 is extended by rotating the anchor pipe 1. A positioning block 309 is set between the guide head 301 and the anchor pipe 1, which can provide a certain fixing effect between the guide head 301 and the anchor pipe 1 during the transportation of the benchmark insertion rod, so as to facilitate transportation.

[0020] As a technical optimization of this utility model, the locking structure 4 includes a locking block 402. The locking block 402 is slidably connected to the inner side of the anchoring tube 1. Multiple locking grooves 405 are opened on the side of the driving sleeve 304. A second spring 403 is fixedly connected between the locking block 402 and the anchoring tube 1. An abutment block 404 is fixedly connected to the side of the locking block 402. An adjusting ring 401 is rotatably connected to the side of the anchoring tube 1. The adjusting ring 401 has multiple rod-shaped structures. The rod-shaped structures on the inner side of the adjusting ring 401 abut against the corresponding abutment block 404. The abutment block 404 is cylindrical. A limiting groove 406 is opened on the side of the anchoring tube 1. The adjusting ring 401 is slidably connected to the anchoring tube 1 through the limiting groove 406. After the expansion rod 303 on the side is extended by rotating the anchoring tube 1, in order to expand... The extension state of the tension rod 303 is fixed. A locking block 402 is provided on the inner side of the anchoring tube 1. When the anchoring tube 1 is rotated and raised to a certain distance, the locking groove 405 on the side of the drive sleeve 304 will be aligned with the end of the corresponding locking block 402. Then, the locking block 402 will lock with the locking groove 405 under the push of the second spring 403, thereby fixing the current position of the drive sleeve 304 and ensuring that the expansion rod 303 can function stably. During the test, the operator can rotate the adjusting ring 401 on the side of the anchoring tube 1 to make the rod-shaped structure on the inner side of the adjusting ring 401 slide in the limiting groove 406, and push the abutment block 404 on the corresponding locking block 402 to release the locking block 402 from the locking groove 405 for easy use.

[0021] In use, this invention firstly features a tapered guide head 301 on the bottom side of the anchoring pipe 1, which facilitates the movement of the marker rod within the hole. The connecting flange 2 at the top of the anchoring pipe 1 connects to the upper marker rod. After lowering the marker rod to the bottom of the hole, the anchoring pipe 1 is rotated. Due to the threaded connection between the inner side of the anchoring pipe 1 and the threaded sleeve 307, the driving sleeve 304 on the inner side of the anchoring pipe 1 gradually slides against the anchoring pipe 1 under the traction of the threaded sleeve 307. The driving sleeve 304 has a toothed groove 305 on its side. As the driving sleeve 304 moves, the expansion rod 303, which meshes with the driving sleeve 304 through the toothed groove 305, will... The side of pipe 1 rotates until it reaches a horizontal position. At this point, the operator can inject cement grout into the inside of anchor pipe 1. Due to the lifting of anchor pipe 1, the grouting port 308 on the side of threaded sleeve 307 is exposed, ensuring that cement grout can be injected from the bottom of the hole. After the injected cement has completely solidified, the horizontally extending expansion rod 303 allows anchor pipe 1 to resist forces from different directions, ensuring the stability of the overall position of the benchmark insertion rod in the formation and ensuring the accuracy of the measurement data. After the benchmark insertion rod is placed into the bottom of the hole, multiple insert plates 302 arranged in a ring are provided at the bottom end of the guide head 301 to facilitate the rotation of anchor pipe 1. The weight of the marker stake and the placement of the insertion plate 302 ensure that the end of the insertion plate 302 is properly inserted into the soil layer, allowing the guide head 301 to remain stable when the anchor pipe 1 rotates. This allows the expansion rod 303 to extend through the rotation of the anchor pipe 1. A positioning block 309 is located between the guide head 301 and the anchor pipe 1, providing a certain degree of fixation between them during transport, facilitating transportation. After the expansion rod 303 extends from the side by rotating the anchor pipe 1, a locking block 402 is located inside the anchor pipe 1 to fix the extended state of the expansion rod 303. After rising to a certain distance, the locking groove 405 on the side of the drive sleeve 304 will align with the end of the corresponding locking block 402. Then, the locking block 402 will lock with the locking groove 405 under the push of the second spring 403, thereby fixing the current position of the drive sleeve 304 and ensuring that the expansion rod 303 functions stably. During the test, the operator can rotate the adjusting ring 401 on the side of the anchoring pipe 1 to make the rod-shaped structure inside the adjusting ring 401 slide in the limiting groove 406, and push the abutment block 404 on the corresponding locking block 402 to release the locking block 402 from the locking groove 405 for easy use.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bottom insertion rod for monitoring strata settlement, comprising an anchoring pipe (1), wherein a connecting flange (2) is fixedly connected to the top end of the anchoring pipe (1), characterized in that: The anchoring pipe (1) has a fixing structure (3) on its inner side. The fixing structure (3) includes a guide head (301). The bottom end of the anchoring pipe (1) is provided with a guide head (301). The end of the guide head (301) is fixedly connected with a threaded sleeve (307). The side of the threaded sleeve (307) is provided with multiple grouting ports (308). The top side of the threaded sleeve (307) is threadedly connected with a drive sleeve (304). The drive sleeve (304) is slidably connected to the inner side of the anchoring pipe (1). The side of the drive sleeve (304) is provided with a toothed groove (305). The side of the anchoring pipe (1) is rotatably connected with an expansion rod (303). The end of the expansion rod (303) meshes with the side of the drive sleeve (304) through the toothed groove (305). The top side of the anchoring pipe (1) is provided with a locking structure (4).

2. The bottom insertion rod for monitoring strata settlement according to claim 1, characterized in that: The drive sleeve (304) has a cuboid structure, and multiple expansion rods (303) are rotatably connected to the side of the anchor tube (1). A torsion spring (306) is fixedly connected between the expansion rod (303) and the anchor tube (1).

3. The bottom insertion rod for monitoring strata settlement according to claim 1, characterized in that: The guide head (301) has a conical structure, and a plurality of insert plates (302) are fixedly connected to the bottom end of the guide head (301), and the plurality of insert plates (302) are arranged in a ring.

4. The bottom insertion rod for monitoring strata settlement according to claim 1, characterized in that: The top side of the guide head (301) is slidably connected with a plurality of positioning blocks (309), and a first spring (310) is fixedly connected between the positioning blocks (309) and the guide head (301).

5. The bottom insertion rod for monitoring strata settlement according to claim 4, characterized in that: The bottom side of the anchor pipe (1) is provided with multiple positioning grooves (311), and the end of the positioning block (309) is a hemispherical structure. The end of the positioning block (309) abuts against the anchor pipe (1) through the positioning grooves (311).

6. The bottom insertion rod for monitoring strata settlement according to claim 1, characterized in that: The locking structure (4) includes a locking block (402), the inner side of the anchoring pipe (1) is slidably connected to the locking block (402), and the side of the driving sleeve (304) is provided with multiple locking grooves (405).

7. The bottom insertion rod for monitoring strata settlement according to claim 6, characterized in that: A second spring (403) is fixedly connected between the locking block (402) and the anchor tube (1), and an abutment block (404) is fixedly connected to the side of the locking block (402).

8. The bottom insertion rod for monitoring strata settlement according to claim 7, characterized in that: An adjusting ring (401) is rotatably connected to the side of the anchor pipe (1). The adjusting ring (401) has multiple rod-shaped structures. The rod-shaped structures on the inner side of the adjusting ring (401) abut against the corresponding abutting block (404). The abutting block (404) has a cylindrical structure.

9. The bottom insertion rod for monitoring strata settlement according to claim 8, characterized in that: The anchoring pipe (1) has a limiting groove (406) on its side, and the adjusting ring (401) is slidably connected to the anchoring pipe (1) through the limiting groove (406).

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