A signal line protection device for an inclinometer and an inclinometer

Abstract

This utility model and the technical field of inclinometer equipment disclose a signal line protection device for inclinometers, used in conjunction with an inclinometer. It includes: a pulley bracket with two side plates and a rotating shaft between the two side plates; a grooved pulley rotatably connected to the rotating shaft of the pulley bracket; the grooved pulley includes a groove for holding the signal line of the inclinometer and guiding the signal line from near the central axis of the borehole opening into the borehole; and a fixed base fixedly connected to one side of the pulley bracket for fixing the pulley bracket near the borehole. An inclinometer is also disclosed. The above-mentioned signal line protection device and inclinometer are simple in structure, easy to use, and low in cost. They effectively protect the signal line of the inclinometer, preventing wear and tear, while also accelerating the lowering or raising of the inclinometer, improving work efficiency. Furthermore, the device is small, lightweight, and flexible.

Description

Technical Field

[0001] This utility model relates to the field of inclinometer technology, and in particular to an inclinometer signal line protection device and an inclinometer. Background Technology

[0002] An inclinometer is an instrument used to measure the apex and azimuth angles of engineering structures such as boreholes, foundation pits, foundations, walls, and dam slopes. In the 1950s, inclinometers were used for in-situ monitoring of geotechnical engineering projects such as earth-rock dams, roadbeds, slopes, and tunnels, achieving good results. Subsequently, some research institutions developed intelligent inclinometers, including resistance strain gauge, accelerometer, and electronic gauge types. Various types of inclinometers are widely used in the fields of water conservancy and hydropower, mining and metallurgy, transportation, and urban construction geotechnical engineering, playing a vital role in ensuring the safety of geotechnical engineering design, construction, and use.

[0003] The inclinometer consists of three parts: a ground instrument control box, a signal cable, and an inclinometer probe, with the inclinometer probe weighing approximately 6.5 kg. The conventional operating method involves the testing personnel lowering the inclinometer probe directly to the bottom of the borehole after each drilling operation and testing it in sections. Simultaneously, a recorder observes the ground instrument control box and records the data for each section, finally calculating the borehole inclination based on the data. During the lowering and retrieval of the inclinometer probe, the signal cable rubs against the borehole tube, especially at greater depths, easily causing damage and frequent replacements, leading to increased testing costs and low efficiency. Therefore, there is an urgent need to design a testing device that is easy to operate and reduces signal cable wear in the inclinometer. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a signal line protection device and inclinometer that can reduce signal line wear and avoid frequent replacements. To solve the above technical problem, the technical solution proposed by this utility model is as follows:

[0005] A signal line protection device for an inclinometer, used in conjunction with an inclinometer, comprising:

[0006] The pulley bracket includes two side plates and a pivot shaft disposed between the two side plates;

[0007] A grooved pulley is rotatably connected to the shaft of a pulley bracket; the grooved pulley includes a groove portion for placing the signal line of the inclinometer and guiding the signal line of the inclinometer from near the central axis of the borehole opening pipe into the borehole;

[0008] A fixed base is fixedly connected to one side of the pulley bracket and is used to fix the pulley bracket near the drill hole.

[0009] In one embodiment, when the borehole is equipped with a casing wall, the fixing base includes a fixing plate and a connecting hook disposed at the bottom of the fixing plate. The fixing plate is fixedly connected to the pulley bracket, and in use, the pulley bracket is fixed to the casing wall by suspending it on the casing wall through the connecting hook.

[0010] In one embodiment, the length of the hook portion suspended on one side of the sleeve wall is not less than 10cm.

[0011] In one embodiment, the fixed base includes a fixed plate, a connecting hook disposed at the bottom of the fixed plate, and a tripod for supporting the connecting hook, wherein the fixed plate is fixedly connected to the pulley bracket.

[0012] In one embodiment, the height of the tripod is not less than 30cm.

[0013] In one embodiment, the tripod, grooved pulley, and fixed base are all made of steel.

[0014] In one embodiment, the groove is a U-shaped groove, a V-shaped groove, or an I-shaped groove.

[0015] In one embodiment, a connecting arm is movably connected to one side plate, and a fastener that cooperates with the connecting arm is fixed on the other side plate.

[0016] Based on the same inventive concept, an inclinometer is also provided, including the inclinometer signal line protection device, ground instrument operation box, signal line and borehole probe as described above. In use, the signal line is guided by the inclinometer signal line protection device from near the central axis of the borehole opening pipe into the borehole.

[0017] Compared with existing technologies, the beneficial effects of this utility model are as follows: When used in conjunction with an inclinometer, the inclinometer's signal line protection device suspends the probe directly from the borehole opening, places the signal line on the groove of the grooved pulley, and lowers or raises the inclinometer to complete the measurement. The inclinometer signal line protection device has a simple structure, is easy to use, inexpensive, and easy to maintain. It effectively protects the inclinometer's signal line, preventing wear and tear, and also speeds up the lowering or raising of the inclinometer when using manual labor, thus improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a side view of a signal line protection device for an inclinometer according to one embodiment;

[0019] Figure 2 Another side view of the inclinometer signal line protection device according to one embodiment;

[0020] Figure 3Another side view of the inclinometer signal line protection device according to one embodiment.

[0021] Reference numerals: 10: pulley bracket; 12: side plate; 14: pivot; 16: connecting arm; 20: grooved pulley; 22: grooved part; 30: fixed base; 40: tripod. Detailed Implementation

[0022] To facilitate understanding of this utility model, the following description will be provided in more comprehensive and detailed manner with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0023] like Figure 1-3 As shown, one embodiment of the inclinometer signal line protection device is used in conjunction with an inclinometer. The inclinometer consists of three parts: a ground instrument control box, a signal line, and an in-hole probe, with the in-hole probe weighing approximately 6.5 kg. The conventional operation method involves the testing personnel lowering the in-hole probe directly to the bottom of the hole after each drilling operation and performing segmented testing. Simultaneously, a recorder observes the ground instrument control box and records the data for each segment (5-10 m), finally calculating the hole inclination based on the data. At deeper drilling depths (80-100 m), the signal line cannot remain vertically aligned with the center of the borehole for extended periods, resulting in continuous friction between the signal line and the borehole tube, leading to signal line wear. To address this problem, the inclinometer signal line protection device provided in this application includes: a pulley bracket 10, a grooved pulley 20, and a fixed base 30. The pulley bracket 10 includes two symmetrically arranged side plates 12 and a rotating shaft 14 positioned between the two side plates 12. The grooved pulley 20 is rotatably connected to the rotating shaft 14 of the pulley bracket 10. The grooved pulley 20 includes a groove 22 for holding the signal line of the inclinometer and guiding the signal line from near the central axis of the borehole opening into the borehole. A fixed base 30 is fixedly connected to one side of the two side plates 12 and is used to fix the pulley bracket 10 near the borehole.

[0024] When in use, fix the base 30 near the borehole pipe, fine-tune the position of the inclinometer signal line protection device to ensure that the signal line is placed behind the groove pulley 20. Utilize the weight of the probe rod inside the hole to make the signal line approximately perpendicular to the ground and suspended near the central axis of the borehole pipe. The other end of the signal line is held manually, and the signal line will not touch the cross-section of the borehole pipe, thus avoiding friction.

[0025] Preferably, a connecting arm 16 is movably connected to one of the side plates 12, and a buckle that cooperates with the connecting arm 16 is fixed to the other side plate 12. In use, the connecting arm 16 connected to the buckle is opened, the signal line of the inclinometer to be measured is placed in the groove 22 of the groove pulley 20, and then the connecting arm 16 is fixed to the buckle, which can limit the movement range of the signal line of the inclinometer to be measured.

[0026] Specifically, in one embodiment, both the pulley bracket 10 and the fixed base 30 are made of steel, and the fixed base 30 is welded to the pulley bracket 10.

[0027] Preferably, the groove portion 22 of the grooved pulley 20 is a U-shaped groove, a V-shaped groove, or an I-shaped groove, with a depth of not less than 1.5 cm. Furthermore, the grooved pulley 20 is made of steel to improve durability.

[0028] In one embodiment, when applied to boreholes with casing, the fixing base 30 includes a fixing plate and a connecting hook disposed at the bottom of the fixing plate. The fixing plate is welded to one side of the two side plates 12. In use, the connecting hook is suspended on the casing to fix the pulley bracket 10 to the casing. Preferably, the hook length on the side of the connecting hook suspended on the casing is not less than 10cm to prevent the inclinometer signal line protection device from tilting to one side and improve stability.

[0029] Specifically, in another embodiment, when applied to boreholes without casing, the fixed base 30 includes a fixed plate, a connecting hook located at the bottom of the fixed plate, and a tripod 40 detachably connected to the connecting hook. The fixed plate is welded to one side of the two side plates 12. Stable support is provided by the tripod 40. Preferably, the height of the tripod 40 is not less than 30cm. This facilitates the wire laying operation and ensures stability. Preferably, the fixed base 30 includes a fixed plate and a tripod 40, both made of steel, with the fixed plate welded to the tripod 40.

[0030] When used with the inclinometer, the aforementioned signal line protection device suspends the inclinometer probe directly from the borehole opening. The signal line is placed on the groove 22 of the grooved pulley 20. The inclinometer is lowered or raised to complete the measurement. The inclinometer signal line protection device is simple in structure, easy to use, low in cost, and easy to maintain. It effectively protects the inclinometer signal line, preventing wear and tear, and also speeds up the lowering or raising of the inclinometer when using manual labor, thus improving work efficiency.

[0031] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A tiltmeter signal line protection device, characterized by, For use with inclinometers, including: The pulley bracket includes two side plates and a pivot shaft disposed between the two side plates; A grooved pulley is rotatably connected to the shaft of a pulley bracket; the grooved pulley includes a groove portion for placing the signal line of the inclinometer and guiding the signal line of the inclinometer from near the central axis of the borehole opening pipe into the borehole; A fixed base is fixedly connected to one side of the pulley bracket and is used to fix the pulley bracket near the drill hole.

2. The inclinometer signal line protection device according to claim 1, characterized in that: When the borehole is equipped with a casing wall, the fixed base includes a fixed plate and a connecting hook set at the bottom of the fixed plate. The fixed plate is fixedly connected to the pulley bracket. In use, the pulley bracket is fixed to the casing wall by suspending it on the casing wall through the connecting hook.

3. The inclinometer signal line protection device according to claim 2, characterized in that: The length of the hook portion suspended on one side of the casing wall should not be less than 10cm.

4. The inclinometer signal line protection device according to claim 1, characterized in that: The fixed base includes a fixed plate, a connecting hook disposed at the bottom of the fixed plate, and a tripod for supporting the connecting hook. The fixed plate is fixedly connected to the pulley bracket.

5. The inclinometer signal line protection device according to claim 4, characterized in that: The height of the tripod shall not be less than 30cm.

6. The inclinometer signal line protection device according to claim 4, characterized in that, The tripod, grooved pulley, and fixed base are all made of steel.

7. The inclinometer signal line protection device according to claim 1, characterized in that: The groove is a U-shaped groove, a V-shaped groove, or an I-shaped groove.

8. The inclinometer signal line protection device according to claim 1, characterized in that: One side plate is movably connected to a connecting arm, and the other side plate is fixed with a fastener that works in conjunction with the connecting arm.

9. An inclinometer, characterized in that, Includes the inclinometer signal line protection device as described in any one of claims 1-8, the ground instrument operation box, the signal line and the borehole probe rod. In use, the signal line is guided by the inclinometer signal line protection device from near the central axis of the borehole opening pipe into the borehole.

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