Array type displacement sensor fixing device

Abstract

The utility model relates to an array type displacement sensor fixing device, which is used for fixing an array type displacement sensor in an inclinometer pipe, and comprises a plurality of positioning claws which are detachably connected with the outer shell of each section of displacement sensor unit and are contacted with the inner wall of the inclinometer pipe, and each positioning claw is composed of two positioning claw assemblies. Each positioning claw assembly comprises a hoop piece and at least one L-shaped elastic positioning piece, wherein the hoop piece is matched with the outer shell of the displacement sensor unit in shape, the L-shaped elastic positioning piece extends out of the hoop piece, and the hoop pieces of the two positioning claw assemblies are detachably connected to the cylindrical outer shell of the displacement sensor through fasteners. When the array type displacement meter is lowered to the inclinometer, the claw-shaped fixing support can be tightly attached to the inner wall of the inclinometer, so that the array type displacement meter and the inclinometer are tightly fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensor installation and fixing, and particularly relates to an array type displacement sensor fixing device. Background Art

[0002] In the field of deformation monitoring such as slopes and foundation pits, it is usually necessary to drill vertically to tens or even hundreds of meters below the surface. In order to prevent the hole from collapsing, a special inclinometer tube is used for deformation measurement. A sensor for monitoring deformation, namely an array displacement sensor, is placed inside the tube. The array displacement sensor consists of multiple equal-length displacement sensor units connected end to end. Since the inner diameter of the inclinometer tube is usually several times the outer diameter of the array displacement meter, there is a large gap between the array displacement sensor and the inner wall of the inclinometer tube. These gaps cause the deformation of the sensor to not follow the deformation of the inclinometer tube well, resulting in a large deviation in the monitoring data. Or the sensor shakes on the inner wall of the tube, causing data failure. Utility Model Content

[0003] In view of the technical problems in the field, the utility model proposes an array displacement sensor fixing device for fixing the array displacement sensor in the inclinometer tube. 1. The fixing device includes a plurality of positioning claws which are detachably connected to the outer shell of each displacement sensor unit and in contact with the inner wall of the inclinometer tube. The positioning claws are composed of two positioning claw assemblies. The positioning claw assemblies include a clamping member adapted to the shape of the outer shell of the displacement sensor unit, and at least one L-shaped elastic positioning member extending from the clamping member. The clamping members of the two positioning claw assemblies are detachably connected to the cylindrical outer shell of the displacement sensor by fasteners.

[0004] As an improvement, it also includes a top cover that is matched with the diameter of the inclinometer pipe, and the top cover covers the pipe opening of one end of the inclinometer pipe located on the ground surface.

[0005] As an improvement, it also includes a first-section displacement sensor unit fixing part, which includes a clamping pipe that can be sleeved on the outer shell of the displacement sensor unit and a fixing bolt that passes through the top cover and is connected to the clamping pipe, and the outer wall of the clamping pipe is provided with a nut that is compatible with the fixing bolt.

[0006] As an improvement, the top cover is provided with a nut fixedly connected to the bolt.

[0007] As an improvement, the clamp member of each positioning claw assembly is integrally formed with the L-shaped elastic positioning member.

[0008] As an improvement, the positioning claw sleeves are arranged at both ends of the outer shell of each displacement sensor unit.

[0009] The technical effect of the utility model is that when the array displacement sensor is lowered into the inclinometer tube, the claw-type fixing bracket can be close to the inner wall of the inclinometer tube, so that the array displacement sensor and the inclinometer tube are tightly fixed. Since the claw-type fixing bracket adopts an open design, it can be applied to inclinometer tubes of most sizes. The claw-type mounting bracket uses a double inward convergence structure, which can enable the array displacement sensor as a whole to slide in both directions in the inclinometer tube without hindrance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 : Schematic diagram of the cross-sectional structure of some embodiments;

[0011] Figure 2 : Structural schematic diagrams of some embodiments;

[0012] Figure 3 : Schematic diagram of the cross-sectional structure of some embodiments. DETAILED DESCRIPTION

[0013] The array displacement sensor is composed of multiple equal length displacement sensor units connected end to end. The displacement sensor units involved in the following embodiments are rod-shaped, including cylindrical rods and prismatic rods.

[0014] The following examples further illustrate the content of the utility model, but should not be understood as limiting the utility model. Without departing from the spirit and essence of the utility model, modifications or replacements made to some structures and installation steps of the utility model are within the scope of the utility model.

[0015] Some embodiments of the present invention include Figure 1-2 An array type displacement sensor fixture, such as Figure 1 As shown, the array type displacement sensor 2 connected end to end in the inclinometer casing 1 is used to fix the multiple sections. The fixing device includes a positioning claw 3 which is detachably connected to the outer shell 21 of each section of the displacement sensor 2 and contacts the inner wall of the inclinometer casing 1. At least one L-shaped elastic positioning piece extends from the hoop of each positioning claw assembly. Figure 2 In some of the embodiments shown, the outer shell 21 of the displacement sensor is cylindrical, and its positioning claws are composed of two positioning claw assemblies 31 and 32. The positioning claw assemblies include a clamping member 33 that is adapted to the shape of the outer shell 21 of the displacement sensor unit, and two L-shaped elastic positioning members 34 extending from the clamping member 33. The clamping members 33 of the two positioning claw assemblies are detachably connected to the cylindrical outer shell of the displacement sensor by fasteners 35.

[0016] In some embodiments based on the above embodiments, one of two adjacent displacement sensors in a multi-section end-to-end connected displacement sensor is provided with a male buckle, and the other of the two adjacent connecting sections is provided with a female buckle, the female buckle defines an insertion space, and at least a portion of the male buckle is inserted into the insertion space and connected to the female buckle.

[0017] In the above embodiment, when in use, two matching positioning claw groups are clamped onto the housing of the array displacement sensor. Preferably, a set of positioning claw groups is installed at both ends of the rigid part of each section of the array displacement sensor unit. When the array displacement meter is lowered into the inclinometer tube, the claw-type fixing bracket can be close to the inner wall of the inclinometer tube, so that the array displacement meter and the inclinometer tube are tightly fixed. Since the claw-type fixing bracket adopts an open design, it can be applied to inclinometer tubes of most sizes. The claw-type mounting bracket uses a double inward convergence structure, which enables the entire device to slide in both directions in the inclinometer tube without hindrance.

[0018] In some embodiments based on the above embodiments, a positioning claw is respectively mounted on both ends of each displacement sensor, and the ends of the L-shaped elastic positioning pieces of the two positioning claws mounted on all displacement sensors extend in the same direction.

[0019] Some embodiments are based on the above embodiments, such as Figure 3 , and also includes a top cover 4 that matches the diameter of the inclinometer pipe and a first displacement sensor unit fixing part 5, the top cover 4 covers the pipe opening of one end of the inclinometer pipe located on the surface. The first displacement sensor unit fixing part 5 includes a clamping pipe 51 that can be sleeved on the outer shell of the displacement sensor unit and a fixing bolt 52 that passes through the top cover 4 and is connected to the clamping pipe 51. The outer wall of the clamping pipe 51 is provided with a nut 53 that matches the fixing bolt 52. A wire hole is opened on the top cover 4 for the wire to pass through.

[0020] The first displacement sensor unit fixing member 5 is used to fix the first displacement sensor unit in the array displacement sensor, and the first displacement sensor unit is located at the position closest to the ground surface in the sensor array.

[0021] On the basis of the above embodiments, preferably, the clamp member of each positioning claw assembly is integrally formed with the L-shaped elastic positioning member.

[0022] On the basis of the above embodiments, preferably, the positioning claw sleeves are arranged at both ends of the outer shell of each displacement sensor unit.

[0023] In the description of the present invention, it should be understood that the terms indicating the positional relationship are based on the positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] Although the present invention has been described in detail above by general description, specific implementation methods and experiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An array displacement sensor fixing device, used for fixing the array displacement sensor in the inclinometer casing, characterized in that: The fixing device includes a plurality of positioning claws which are detachably connected to the outer shell of each displacement sensor unit and in contact with the inner wall of the inclinometer tube. The positioning claws are composed of two positioning claw assemblies. The positioning claw assemblies include a clamping member adapted to the shape of the outer shell of the displacement sensor unit and at least one L-shaped elastic positioning member extending from the clamping member. The clamping members of the two positioning claw assemblies are detachably connected to the cylindrical outer shell of the displacement sensor through fasteners.

2. The array type displacement sensor fixing device according to claim 1, characterized in that: It also includes a top cover that matches the diameter of the inclinometer pipe, and the top cover covers the pipe opening at one end of the inclinometer pipe located on the ground surface.

3. The array type displacement sensor fixing device as claimed in claim 2, characterized in that: It also includes a first section displacement sensor unit fixing part, which includes a clamping pipe that can be sleeved on the outer shell of the displacement sensor unit and a fixing bolt that passes through the top cover and is connected to the clamping pipe, and the outer wall of the clamping pipe is provided with a nut that is compatible with the fixing bolt.

4. The array type displacement sensor fixing device as claimed in claim 3, characterized in that: The top cover is provided with a nut fixedly connected with the bolt.

5. The array type displacement sensor fixing device according to claim 1, characterized in that: The hoop member of each positioning claw assembly is integrally formed with the L-shaped elastic positioning member.

6. The array type displacement sensor fixing device as claimed in claim 5, characterized in that: The positioning claw sleeves are arranged at both ends of the outer shell of each displacement sensor unit.

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