Open type convergent measuring pile

Abstract

The utility model relates to the field of cavern surrounding rock deformation monitoring, in particular to an open type convergence measuring pile. The open type convergent measuring pile comprises an anchoring section, a hanging rod and a measuring pile hook, one end of the anchoring section is used for being embedded into a rock wall to be fixed, the other end of the anchoring section is connected with one end of the hanging rod, the other end of the hanging rod is connected with the measuring pile hook, and the measuring pile hook is a polygonal open hook composed of a connecting rod, a limiting rod and a guide rod. One end of the connecting rod is connected with the hanging rod, the other end of the connecting rod is connected with one end of the limiting rod, the other end of the limiting rod is connected with the guide rod, the length of the limiting rod is slightly larger than the width of a hook of a convergence gauge, and the limiting rod is perpendicular to the tension direction of a measuring line of the convergence gauge. According to the utility model, the positioning accuracy of the convergence gauge hook can be ensured, and a measurer can quickly and conveniently hang the convergence gauge hook.

Description

Technical Field

[0001] This utility model relates to the field of cavern surrounding rock deformation monitoring, specifically to an open-type convergent measuring pile. Background Technology

[0002] Convergence measurement is a simple and effective method for measuring the deformation of surrounding rock in underground caverns. It is widely used in water conservancy, hydropower, railway, and other engineering projects, and is an essential measurement item for safety monitoring during underground cavern construction. The convergence meter measurement method is easy to operate, provides intuitive readings, is low in cost, and has high accuracy, making it a commonly used method for convergence measurement.

[0003] The convergence gauge measurement method uses a convergence gauge to measure the relative displacement between convergence test points. Convergence test points are typically arranged in cross-sections at the top and middle of the tunnel, and are installed at the points to be measured before the convergence measurement. Traditional convergence test points generally consist of a ribbed steel bar and a welded circular ring. During observation, the two hooks of the convergence gauge are attached to the convergence test points to form a measuring line, and the change in distance between the two convergence test points is observed using a reading device.

[0004] During the observation process, the top convergence stakes typically require surveyors to use climbing equipment to attach or detach the hooks. However, climbing not only increases safety hazards and reduces work efficiency but also increases construction costs. While long hook rods can be used for attaching and detaching, the diameter of the rings on traditional convergence stakes is relatively small, making it difficult for surveyors on the ground to attach the convergence meter hooks into the stake's rings. Increasing the ring size or making it more open, as in Chinese patent CN103411593A, can improve hooking efficiency, but the convergence meter hooks are prone to significant slippage within the stake's rings, reducing positioning accuracy and thus affecting observation precision.

[0005] Therefore, a convergence stake is needed that can both ensure positioning accuracy and allow surveyors to quickly and easily attach the hook, so as to successfully complete the convergence measurement work. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an open-type convergence measuring stake that can ensure positioning accuracy and allow surveyors to quickly and conveniently hook in the convergence measuring stake, which is a shortcoming of the existing convergence measuring stake.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An open-type convergence measuring pile includes an anchoring section, a hanging rod, and a measuring pile hook. One end of the anchoring section is used to embed into the rock wall for fixation, and the other end is connected to one end of the hanging rod. The other end of the hanging rod is connected to the measuring pile hook. Its structural feature is that the measuring pile hook is a polygonal open hook composed of a connecting rod, a limiting rod, and a guide rod. One end of the connecting rod is connected to the hanging rod, and the other end is connected to one end of the limiting rod. The other end of the limiting rod is connected to the guide rod. The length of the limiting rod is slightly larger than the width of the convergence measuring pile hook, and the limiting rod is perpendicular to the tensioning direction of the convergence measuring line.

[0009] This invention designs the pile-measuring hook as a polygonal open hook and guide rod, allowing surveyors to quickly and conveniently hook the convergence meter hook into the pile-measuring hook through the guide rod and the opening of the polygonal open hook. In addition, during the use of this invention, since the length of the limiting rod is slightly greater than the width of the convergence meter hook, and the limiting rod is arranged perpendicular to the tensioning direction of the convergence meter measuring line, the convergence meter hook is always located at the same position on the limiting rod when the convergence meter is tensioned along the same measuring line, which improves the positioning accuracy of the convergence meter hook in the convergence pile and ensures the measurement accuracy.

[0010] Preferably, the guide rod is arranged parallel to the hanging rod so that after the convergence meter hook passes the guide rod, it can slide down the guide rod to the limiting rod, thus improving the convenience of hooking.

[0011] Preferably, the stake hooks are symmetrically installed on both sides of the hanging rod.

[0012] Preferably, the connecting rod and the limiting rod are connected directly below the measuring pile hook to form a first angle, and the limiting rod and the guide rod are connected diagonally below the measuring pile hook to form a second angle.

[0013] Preferably, the anchoring section is a ribbed steel bar or a threaded rod.

[0014] Preferably, the pile-testing hook is formed by bending a steel bar.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1) The pile measuring hook of this utility model has a polygonal open structure, which reduces the difficulty of hanging and removing the convergence meter hook and improves the efficiency of measurement work;

[0017] 2) When this utility model is used for observation of the same convergence measurement line, the convergence meter hook is located at the same position of the pile hook limit rod each time it is tensioned, which ensures the positioning accuracy of the convergence meter in the convergence measurement pile and improves the measurement accuracy.

[0018] 3) This utility model has a simple structure, is easy to install, and can be used repeatedly. 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 description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are 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 arrangement of this utility model in cavern convergence measurement;

[0021] Figure 2 This is a schematic diagram of the tensioning process during measurement in this utility model.

[0022] In the diagram: 1-anchoring section, 2-hanging rod, 3-pile measuring hook, 4-convergence meter hook, 5-rock wall, 31-connecting rod, 32-limiting rod, 33-guide rod. Detailed Implementation

[0023] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 2 The present invention, an embodiment of an open-type convergent pile measuring device, mainly consists of an anchoring section 1, a hanging rod 2, and a pile measuring hook 3.

[0027] The anchoring section 1 can be a ribbed steel bar or a screw, etc., used for embedding and fixing within the rock wall 5.

[0028] The hanging rod 2 is located below the anchoring section 1 and is connected to the lower end of the anchoring section 1. The hanging rod 2 is provided with pile measuring hooks 3 on both sides.

[0029] The pile-measuring hook 3 is a polygonal open hook, composed of a connecting rod 31, a limiting rod 32, and a guide rod 33. One end of the connecting rod 31 is connected to the hanging rod 2, and the other end is connected to one end of the limiting rod 32. The other end of the limiting rod 32 is connected to the guide rod 33. The length of the limiting rod 32 is slightly larger than the width of the convergence meter hook 4, and the limiting rod 32 is perpendicular to the tensioning direction of the convergence meter measuring line. After the convergence meter hook 4 is hooked into the pile-measuring hook 3 and tensioned, the convergence meter hook 4 is always located at the same position on the limiting rod 32 each time the convergence meter is tensioned along the same measuring line, ensuring measurement accuracy.

[0030] In this embodiment, the guide rod 33 is arranged parallel to the hanging rod 2 so that after the convergence meter hook 4 passes the guide rod 33, it can slide down along the guide rod 33 to the limiting rod 32, improving the hook's convenience; the connecting rod 31 and the limiting rod 32 are connected directly below the pile hook 3 to form a first angle, and the limiting rod 32 and the guide rod 33 are connected diagonally below the pile hook 3 to form a second angle.

[0031] When using this convergence measuring pile, the anchoring section 1 of the convergence measuring pile is anchored to the cavern rock wall 5 according to the design position. The measuring pile hook 3 is connected to the rock wall 5 through the hanging rod 2. The convergence meter hook 4 can be easily hooked onto the measuring pile hook 3 or removed. Moreover, the convergence meter hook 4 is located at the same position on the limiting rod 32 every time it is measured, which improves the positioning accuracy inside the convergence measuring pile and ensures the measurement accuracy.

[0032] The following describes a specific engineering application of this utility model.

[0033] During the construction of a tunnel in a certain project, convergence meters were used to monitor convergence deformation within the tunnel. For example... Figure 1 As shown, the tunnel has a portal-shaped cross-section with dimensions of 3.0m × 3.5m (width × height). One convergence measuring point is arranged at the top and one on each side of the monitoring section, for a total of three measuring points per monitoring section. To facilitate on-site operations, the convergence measuring points located at the top of the tunnel are installed on-site using the convergence measuring stakes of this invention.

[0034] This utility model's convergence measuring pile is welded from on-site materials. The anchoring section 1 uses Φ22mm ribbed steel bars, while the hanging rod 2 and the measuring pile hook 3 both use Φ8mm plain round steel bars. The plain round steel bars are then... Figure 2 The shape of the pile-measuring hook shown is bent to form the first and second included angles directly below and diagonally below the pile-measuring hook 3. After bending out the pile-measuring hooks 3 on both sides, they are welded and ground to the hanging rod 2 and anchoring section 1, thus completing the manufacturing process. During on-site installation, along the monitoring section... Figure 1Drill holes at the designed locations, insert anchor section 1, and inject epoxy resin adhesive for consolidation.

[0035] During measurement, the surveyor hangs the convergence meter hook 4 on the traditional measuring pile ring at the bottom along the survey line. For the convergence measuring pile using this invention at the top, a long pole can be used for auxiliary suspension. The measuring pile hook 3 of this invention has an opening, which facilitates the suspension of the convergence meter hook 4. After the convergence meter hook 4 is hung on the measuring piles at both ends, the tension is increased to the specified tension and the reading is taken. In this case, as the convergence meter scale tightens during the tensioning process, the convergence meter hook 4 also locks into the limiting rod 32 of the measuring pile hook 3 along the survey line direction, ensuring the accuracy of repeated observations.

[0036] Experiments have shown that using the convergence measuring stake of this invention allows for convenient hooking and unhooking during convergence measurements, improving work efficiency while ensuring measurement accuracy.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model should fall within the protection scope of the technical solution of this utility model.

Claims

1. An open-type convergent pile, comprising an anchoring section, a hanging rod, and a pile hook, wherein one end of the anchoring section is used for embedding and fixing into a rock wall, and the other end is connected to one end of the hanging rod, and the other end of the hanging rod is connected to the pile hook, characterized in that: The pile-measuring hook is a polygonal open hook composed of a connecting rod, a limiting rod, and a guide rod. One end of the connecting rod is connected to the hanging rod, and the other end is connected to one end of the limiting rod. The other end of the limiting rod is connected to the guide rod. The length of the limiting rod is slightly greater than the width of the convergence meter hook, and the limiting rod is perpendicular to the tensioning direction of the convergence meter measuring line.

2. The open-type convergence surveying pile according to claim 1, characterized in that, The guide rod is arranged parallel to the hanging rod.

3. The open-type convergence surveying pile according to claim 1, characterized in that, The pile-measuring hooks are symmetrically installed on both sides of the hanging rod.

4. The open-type convergence pile according to claim 1, characterized in that, The connecting rod and the limiting rod are connected directly below the measuring pile hook to form a first angle, and the limiting rod and the guide rod are connected diagonally below the measuring pile hook to form a second angle.

5. The open-type convergence surveying stake according to any one of claims 1-4, characterized in that, The anchoring section is a ribbed steel bar or a threaded rod.

6. The open-type convergence surveying stake according to any one of claims 1-4, characterized in that, The pile-testing hook is formed by bending steel bars.

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