Fixed inclinometer

Abstract

The utility model belongs to the technical field of sensors, and particularly relates to a fixed inclinometer which comprises a barrel, a sensor assembly and two guide mechanisms, the sensor assembly is mounted in a mounting cavity in the middle of the barrel, and the two guide mechanisms are arranged at the positions, close to the two ends, of the barrel respectively. Wire passing holes are formed in the positions, located at the two ends of the installation cavity, of the barrel, a cable penetrates through the side wall of the barrel through the wire passing holes, and connecting parts are arranged at the two ends of the barrel. The fixed inclinometer disclosed by the utility model is simple in structure and convenient to install and overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and particularly relates to a fixed inclinometer. Background Art

[0002] A fixed inclinometer is an automated tool for monitoring the deep displacement of key infrastructures such as slopes, dams, and deep foundation pits. In specific applications, an inclinometer tube is first embedded in the target structure, and the fixed inclinometer is placed in the inclinometer tube. When deformation occurs, the entire inclinometer tube will also deform accordingly, and the fixed inclinometer can accurately measure the horizontal displacement. It evaluates the horizontal movement of the target structure at different depths and directions by measuring the change in the angle between the axis of the inclinometer tube and the plumb line. The fixed inclinometer can capture the minute offset of the inclinometer tube from the initial position to the new position, automatically calculate the displacement of the measured structure by comparing the initial measurement angle and the real-time measurement angle, and issue a warning in a timely manner, thereby preventing potential safety accidents. Some of the fixed inclinometers in the prior art have relatively complex structures. The present application aims to provide a fixed inclinometer with a simple structure and more convenient wiring. Content of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and provide a fixed inclinometer with a simple structure and convenient use.

[0004] The technical solution of the utility model is: a fixed inclinometer, including a cylinder body, a sensor assembly, and a guiding mechanism. An installation cavity is provided in the middle of the cylinder body, and the sensor assembly is located in the installation cavity. There are two guiding mechanisms, which are respectively arranged at positions close to both ends of the cylinder body. Through holes are provided at positions close to both ends of the installation cavity on the cylinder body, and cables can pass through the through holes to connect the sensing components in the installation cavity through the side wall of the cylinder body; connection parts are provided at both ends of the cylinder body.

[0005] Further, the diameter of the cylinder body is 28 mm, and the thickness of the side wall of the cylinder body is 2 mm.

[0006] Further, the guiding mechanism includes a guide wheel rod. The midpoint of the guide wheel rod is rotatably connected to the cylinder body through a pin shaft, and guide wheels are provided at both ends of the guide wheel rod. The guiding mechanism further includes a torsion spring, and the torsion spring is used to drive the guide wheel rod to maintain a certain inclination angle with the cylinder body.

[0007] Further, the distance between the two pin shafts is 300 mm. Preferably, the distance between the two pin shafts is 500 mm.

[0008] Further, the guide wheel rod is a square tube, with grooves cut at both ends in the length direction of the square tube for installing and accommodating the guide wheels. The guide wheel rod can also be in the shape of a rectangular strip, with grooves cut at both ends in the length direction of the rectangular strip. The guide wheel rod can also be composed of two side plates and a clamping block. The two side plates are arranged parallel and aligned, the clamping block is clamped between the two side plates, and the clamping block is located in the middle of the side plates in the length direction, so that there are gaps at both ends of the two side plates to form grooves for installing the guide wheels.

[0009] In some embodiments, the guide wheel rod can also adopt a telescopic structure. The middle part of the guide wheel rod is a fixed part, and both ends are telescopic structures. For example, the guide wheel rod is composed of three square tubes, including an outer tube and two inner tubes. The two inner tubes are symmetrically inserted into the outer tube from both ends, so that the two inner tubes can perform telescopic movements along the length direction of the outer tube at the same time. The inner tubes and the outer tube can be locked by screws or buckles, and guide wheels are installed at the outer ends of the two inner tubes. The advantage of setting the guide wheel rod as a telescopic structure is that for some pre-buried inclinometers with relatively large diameters, when the two ends of the guide wheel rod are in a contracted state, the guide wheels cannot contact the inner wall of the inclinometer tube. At this time, the guide wheel rod can be adjusted so that the two ends of the guide wheel rod each extend a certain distance and are locked. After the guide wheel rod extends, it can adapt to the inclinometer tube with a larger diameter to complete the measurement work.

[0010] Further, the torsion spring is arranged in the middle of the guide wheel rod or at a position on the cylinder body close to one end of the guide wheel rod.

[0011] Further, the connecting parts at both ends of the cylinder body are of a threaded structure, which can include screws and nuts. The connecting parts are used to connect with other connecting parts to realize the detachable connection between two inclinometers (cylinder bodies). The other connecting parts can be couplings or universal joints.

[0012] The beneficial effects of the present utility model compared with the prior art:

[0013] 1. The fixed inclinometer in the present utility model has a simple structure and is convenient to use. An installation cavity is arranged in the middle of the cylinder body, the sensor assembly is arranged in the installation cavity, and wire passing holes for facilitating the passing of cables are arranged at both the upper and lower ends of the installation cavity. Two cables respectively pass through the two wire passing holes to connect the relevant components on both sides inside and outside the cylinder body. When the inclinometers are used in series, the two cables of each inclinometer can be quickly connected to the inclinometers in front and behind respectively, which is convenient for installation and maintenance.

[0014] 2. In the inclinometer of the present utility model, the guiding structure is optimized. The guide wheel rod can be processed or assembled in various ways. For example, the guide wheel rod can be made of a hollow or solid square tube through wire cutting process, or it can be composed of two side plates and clamping blocks. The materials are easy to obtain and the manufacturing is convenient. Moreover, the guide wheel rod can also adopt a telescopic structure, so that the overall length of the guide wheel rod can be adjusted according to actual needs, and then it can be used in cooperation with a (pre-embedded) inclinometer tube with a larger diameter, that is, the versatility of the whole instrument is improved. Brief Description of the Drawings

[0015] Figure 1 is a schematic three-dimensional structure diagram of Embodiment 1 of the present utility model;

[0016] Figure 2 is a schematic diagram of the cylinder body in Embodiment 1 of the present utility model;

[0017] Figure 3 is a schematic diagram of the guiding mechanism in Embodiment 1 of the present utility model;

[0018] Figure 4 is a schematic diagram of several structures of the guide wheel rod that can be adopted in the embodiments of the present utility model;

[0019] Figure 5 is a schematic diagram of the telescopic guide wheel rod structure in Embodiment 2 of the present utility model;

[0020] In the figure: 1 - cylinder body, 11 - installation cavity, 12 - wire passing hole, 2 - guiding structure, 21 - guide wheel rod, 211 - outer tube, 212 - inner tube, 213 - hand-tightening screw, 22 - guide wheel, 23 - groove, 3 - connecting part, 4 - cable. Detailed Embodiment

[0021] The following will further elaborate on the present utility model in conjunction with specific embodiments. The methods or functional components not specifically described in the embodiments are all prior arts; unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs.

[0022] Embodiment 1

[0023] As Figures 1-4 shown, this embodiment is a fixed inclinometer, including a cylinder body 1, a sensor assembly and a guiding mechanism. An installation cavity 11 is provided in the middle of the cylinder body 1, and a sensor assembly is arranged in the installation cavity 11. There are two guiding mechanisms, which are respectively arranged at positions close to both ends of the cylinder body 1. Wire passing holes 12 are arranged at positions close to both ends of the installation cavity 11 on the cylinder body 1. The cable 4 passes through the side wall of the cylinder body 1 through the wire passing holes 12 and is connected to the sensor assembly in the installation cavity 11. Connecting parts 3 are arranged at both ends of the cylinder body 1.

[0024] In this embodiment, the diameter of the cylinder body 1 is 28 mm, and the thickness of the side wall of the cylinder body 1 is 2 mm. The guiding mechanism includes a guide wheel rod 21. The midpoint of the guide wheel rod 21 is rotatably connected to the cylinder body 1 through a pin shaft, and guide wheels 22 are arranged at both ends of the guide wheel rod 21. The guiding mechanism further includes a torsion spring for driving the guide wheel rod 21 to maintain a certain inclination angle with the cylinder body 1. The torsion spring is arranged at a position on the cylinder body 1 close to one end of the guide wheel rod 21. The distance between the two pin shafts is 300 mm. In this embodiment, the guide wheel rod 21 is a solid square tube, and grooves 23 are cut at both ends in the length direction of the solid square tube, and the guide wheels 22 are installed in the grooves 23.

[0025] In this embodiment, the connecting parts 3 at both ends of the cylinder body 1 are of a threaded structure, mainly including a screw rod and a nut; the connecting parts 3 are used to be connected to other connecting parts to realize the detachable connection between two inclinometers (cylinder bodies 1). The other connecting parts can be a coupling or a universal joint. The specific usage method of the fixed inclinometer in this embodiment is the same as that of the existing fixed inclinometer, and will not be elaborated here.

[0026] In some other specific implementation schemes, the guide wheel rod 21 can also be a hollow square tube, and grooves 23 are arranged at both ends in the length direction of the hollow square tube, and the guide wheels 22 are installed in the grooves 23. The guide wheel rod 21 can also be composed of two side plates and a clamping block. The two side plates are arranged in parallel and aligned, the clamping block is clamped between the two side plates, and the clamping block is located in the middle of the side plates in the length direction, so that grooves 23 are formed at both ends of the two side plates for installing the guide wheels 22.

[0027] Embodiment 2

[0028] As Figure 5 shown, the difference between this embodiment and Embodiment 1 is that: the guide wheel rod 21 in this embodiment adopts a telescopic structure. The guide wheel rod 21 is composed of three square tubes, including an outer tube 211 and two inner tubes 212. The two inner tubes 212 are symmetrically inserted into the outer tube 211 from both ends, so that the two inner tubes 212 can perform telescopic movement along the length direction of the outer tube 211. The inner tubes 212 and the outer tube 211 can be locked through hand-tightening screws 213, and guide wheels 22 are installed at the outer ends of the two inner tubes 212. The advantage of setting the guide wheel rod 21 as a telescopic structure is that for some large-diameter embedded inclinometer tubes, when the two ends of the guide wheel rod 21 are in a contracted state, the guide wheels 22 cannot effectively contact the inner wall of the inclinometer tube. At this time, the guide wheel rod 21 can be adjusted so that the two ends of the guide wheel rod 21 each extend a certain distance and are locked, so as to adapt to larger-diameter inclinometer tubes to complete the measurement work.

[0029] The above are only some embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have combinations and variations of the foregoing various technical features. Without departing from the spirit and scope of the present utility model, improvements, variations, equivalent substitutions made by those skilled in the art, or the application of the structure or method of the present utility model to other fields to achieve the same effect all fall within the protection scope of the present utility model.

Claims

1. A fixed inclinometer, characterized in that: It includes a cylinder body, a sensor assembly and a guiding mechanism. The sensor assembly is installed in an installation cavity in the middle of the cylinder body. There are two guiding mechanisms, which are respectively arranged at positions close to both ends of the cylinder body. Through holes are provided at positions at both ends of the installation cavity on the cylinder body. A cable passes through the side wall of the cylinder body through the through hole. Connection parts are provided at both ends of the cylinder body.

2. The fixed inclinometer according to claim 1, characterized in that: The diameter of the cylinder body is 28 mm, and the thickness of the side wall of the cylinder body is 2 mm.

3. The fixed inclinometer according to claim 1, wherein: The guiding mechanism includes a guide wheel rod. The midpoint of the guide wheel rod is rotatably connected to the cylinder body through a pin shaft, and guide wheels are provided at both ends of the guide wheel rod. The guiding mechanism further includes a torsion spring, and the torsion spring is used to drive the guide wheel rod to be arranged at an angle with the cylinder body.

4. The fixed inclinometer according to claim 3, wherein: The distance between the two pin shafts is 300 mm.

5. The fixed inclinometer according to claim 3, wherein: The distance between the two pin shafts is 500 mm.

6. The fixed inclinometer according to claim 3, wherein: The guide wheel rod is a square tube, and grooves are cut at both ends in the length direction of the square tube. The grooves are used to install and accommodate the guide wheels.

7. The fixed inclinometer according to claim 3, wherein: The guide wheel rod is a rectangular strip, and grooves are provided at both ends in the length direction of the rectangular strip. The grooves are used to install and accommodate the guide wheels.

8. The fixed inclinometer according to claim 3, characterized in that: The guide wheel rod is composed of two side plates and a clamping block. The two side plates are arranged in parallel and aligned. The clamping block is clamped between the two side plates, and the clamping block is located in the middle of the side plates in the length direction.

9. The fixed inclinometer according to claim 3, wherein: The guide wheel rod is a telescopic structure.

10. The fixed inclinometer according to claim 3, wherein: The torsion spring is arranged in the middle of the guide wheel rod or at a position close to one end of the guide wheel rod.

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