Mining optical fiber multipoint displacement sensor

Abstract

The utility model discloses a mining optical fiber multi-point displacement sensor which comprises a sensor body, a mounting block is fixedly arranged in the middle of the top surface of the sensor body, connecting bolts penetrate through the two ends of the mounting block, a fixed insertion rod is inserted into the top end of the mounting block, a fixed screw hole is formed in the bottom end of the fixed insertion rod, and screwing threads are formed in the side wall of the bottom end of the fixed insertion rod. A clamping strip is arranged on the outer wall of the fixed insertion rod, a cross-shaped partition plate is arranged in the fixed insertion rod, fixed guide blocks distributed at equal intervals are symmetrically arranged on the outer wall of a rod body of the fixed insertion rod, an outer sleeve is movably connected to the exterior of the fixed insertion rod, and an arc clamping groove is fixedly formed in the inner wall of the end, close to the sensor body, of the outer sleeve; a driving assembly is movably clamped in the arc clamping groove, mounting grooves are symmetrically formed in the outer sleeve body, and rotary positioning assemblies are mounted in the mounting grooves, so that the sensor main body is fixed, an adjustable extension supporting structure is formed, and disassembly and assembly are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine optical fiber multipoint displacement sensor technical field, concretely is a kind of mine optical fiber multipoint displacement sensor. BACKGROUND

[0002] Multipoint displacement sensor is a kind of instrument for measuring the relative displacement between different points inside object, it works based on multiple physical principles, and common have mechanical transmission principle and electrical measurement principle, for example, mechanical transmission principle, there is usually a group of mechanical link inside sensor, when monitoring point occurs displacement, these links will pass displacement signal to the core measuring component of sensor;

[0003] Multipoint displacement sensor when in use, usually need to be equipped with suitable anchor head, utilize the anchoring force of anchor head and fix sensor on roadway roof, anchor head one end is deeply into rock mass or coal body, and it is closely combined with rock mass by mechanical anchoring or bonding anchoring mode, other end is connected with sensor through steel wire rope, so that sensor is firmly fixed in predetermined position, and the displacement sensor of transmission is connected with anchor head by welding mode, after use, displacement sensor is not convenient to take down. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of mine optical fiber multipoint displacement sensors, to solve the problem that multipoint displacement sensor in above background technique is proposed, when in use, usually need to be equipped with suitable anchor head, utilize the anchoring force of anchor head and fix sensor on roadway roof, anchor head one end is deeply into rock mass or coal body, and it is closely combined with rock mass by mechanical anchoring or bonding anchoring mode, other end is connected with sensor through steel wire rope, so that sensor is firmly fixed in predetermined position, and the displacement sensor of transmission is connected with anchor head by welding mode, after use, displacement sensor is not convenient to take down.

[0005] In order to achieve the above object, the utility model provides following technical scheme: a mine optical fiber multipoint displacement sensor, including sensor main part, the middle part of sensor main part top is fixedly arranged with the mounting block, both ends of mounting block are equipped with the connecting bolt, the top end of mounting block is inserted with fixed insertion rod, the bottom of fixed insertion rod is equipped with fixed screw hole, the lateral wall of fixed insertion rod bottom is equipped with screw thread, the outer wall of fixed insertion rod is provided with the engaging strip, the inside of fixed insertion rod is provided with cross partition, the outer wall of fixed insertion rod rod body is provided with the fixed guide block of equidistance distribution, the outside of fixed insertion rod is movably connected with the outer sleeve, the inner wall of one end of outer sleeve close to sensor main part is fixedly equipped with the circular arc clamping groove, the inside of circular arc clamping groove is movably connected with the driving assembly, the pipe body of outer sleeve is equipped with the mounting groove, the inside of mounting groove is installed with the rotation positioning assembly, the outside of outer sleeve is sleeved with the anchor head, the outside of anchor head is fixedly connected with the anchor claw, through the fixed insertion rod fixed, for fixed insertion rod position fixed and sensor main part connection, realize the fixation of sensor main part, form adjustable stretch support structure, convenient dismounting.

[0006] The driving assembly includes a driving nut and a rotating connection pipe, the rotating connection pipe is rotatably connected in the mounting groove, one end of the rotating connection pipe is fixedly connected with the driving nut, the driving nut is sleeved on the outside of the fixed insertion rod, the rotating connection pipe is moved by rotating the driving nut, so that the outer sleeve moves.

[0007] The rotating positioning assembly includes a fixed column and a rotating plate, the rotating plate is arranged in the mounting groove, the fixed column is fixedly arranged on the both side walls of the mounting groove, the fixed column penetrates through the rotating plate, and the rotating plate rotates along the fixed column.

[0008] The guide rail is fixedly arranged on the inner wall of the pipe body of the outer sleeve, and the guide rail is matched with the engaging strip, so that the outer sleeve moves stably.

[0009] The recess is arranged on the side of the rotating plate close to the fixed insertion rod, the recess in the middle of the rotating plate corresponds to the position of the fixed guide block, and the movement of the fixed guide block makes the rotating plate rotate along the fixed column.

[0010] The top of the sensor main part is fixedly arranged with a top plate, the both sides of the sensor main part are symmetrically provided with mounting cavities, a screw rod is fixedly arranged in the mounting cavity, a scale roller is sleeved on the outer side of the screw rod, a plug is arranged on one side of the sensor main part, outer cover plates are arranged at both ends of the sensor main part through bolts, sensor related components are assembled in the inner part, and complete detection components are formed.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] By designing the external sleeve, the mounting groove, the fixed column, the rotating plate, the guide rail, the driving nut, the rotating connecting pipe, the arc clamping groove, and the anchor head and the anchor claw sleeved outside the external sleeve, the anchor head and the anchor claw are inserted into the pre-formed mounting hole, the anchor head is fixed by the contact between the anchor claw and the inner wall of the mounting hole, the anchor head is prevented from being withdrawn from the mounting hole, the driving nut is rotated to drive the rotating connecting pipe to rotate in the arc clamping groove, the driving nut is screwed with the external thread outside the bottom end of the fixed insertion rod, the external sleeve and the guide rail slide along the clamping strip, the rotating plate moves relative to the fixed guide block, the one end of the rotating plate is lifted by the fixed guide block, the rotating plate rotates along the fixed column, the one end of the rotating plate extends out of the external sleeve and contacts the inner wall of the anchor head, the external sleeve and the inner wall of the anchor head are kept relatively fixed, the fixing of the external sleeve is completed, the fixed insertion rod is fixed, and the sensor body is connected after the fixed insertion rod is fixed, the sensor body is fixed, the adjustable stretching support structure is formed, and the sensor body is fixed. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model;

[0014] Figure 2 It is an internal structure schematic view of the installation cavity of the utility model;

[0015] Figure 3 It is an external sleeve position distribution schematic view of the utility model;

[0016] Figure 4 It is an internal structure schematic view of the external sleeve of the utility model;

[0017] Figure 5 It is an arc clamping groove position distribution schematic view of the utility model.

[0018] In the drawing: 1, sensor body; 2, top plate; 3, external cover plate; 4, installation cavity; 5, screw rod; 6, scale roller; 7, plug; 8, mounting block; 9, connecting bolt; 10, fixed insertion rod; 11, fixed screw hole; 12, external thread; 13, clamping strip; 14, fixed guide block; 15, external sleeve; 16, mounting groove; 17, fixed column; 18, rotating plate; 19, guide rail; 20, driving nut; 21, rotating connecting pipe; 22, arc clamping groove; 23, cross partition; 24, anchor head; 25, anchor claw. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.

[0020] Please refer to Figures 1-5The utility model provides a kind of mine optical fiber multipoint displacement sensor, including sensor main body 1, sensor main body 1 inside is provided with light source optical fiber and receiving optical fiber, optical fiber probe, photoelectric conversion device and signal conditioning circuit, light source optical fiber couples light from light source to the measuring area of sensor, provides incident light for displacement measurement, ensure that light can be propagated by total reflection in fiber core, receiving optical fiber is responsible for receiving the light that is reflected or scattered back by measured object, transmit the received optical signal into subsequent photoelectric conversion device or signal processing system, photoelectric conversion device converts the optical signal transmitted by receiving optical fiber into electrical signal, signal conditioning circuit carries out conditioning and processing to the electrical signal output by photoelectric conversion device, including amplification, filtering, noise reduction etc.

[0021] Before using the device, one end of each steel wire wound on the scale roller 6 is connected to the base point provided in the mounting hole through the through hole formed by the cross partition plate 23 and the fixed insertion rod 10, and then the sensing lead is connected to the plug 7 to form a complete transmission line.

[0022] The outer wall of the fixed insertion rod 10 is symmetrically provided with equidistantly distributed fixed guide blocks 14, the external sleeve 15 is movably connected to the outside of the fixed insertion rod 10, the inner wall of the pipe body of the external sleeve 15 is fixedly provided with a guide rail 19, the guide rail 19 is matched with the clamping strip 13, the inner wall of one end of the external sleeve 15 close to the sensor main body 1 is fixedly provided with a circular arc clamping groove 22, a driving assembly is movably clamped in the circular arc clamping groove 22, the driving assembly comprises a driving nut 20 and a rotating connecting pipe 21, the rotating connecting pipe 21 is rotatably connected in the installation groove 16, one end of the rotating connecting pipe 21 is fixedly connected with the driving nut 20, and a circular ring body is arranged at the end of the rotating connecting pipe 21. The circular ring body is clamped into the circular arc clamping groove 22, so that the rotating connecting pipe 21 can rotate, the driving nut 20 is sleeved on the outside of the fixed insertion rod 10, the driving nut 20 does not contact the fixed insertion rod 10, the pipe body of the external sleeve 15 is symmetrically provided with the installation groove 16, the rotating positioning assembly is installed in the installation groove 16, the anchor head 24 is slidably sleeved on the outside of the external sleeve 15, the anchor claw 25 is fixedly connected to the outside of the anchor head 24, the rotating positioning assembly comprises a fixed column 17 and a rotating plate 18, the rotating plate 18 is arranged in the installation groove 16, the fixed column 17 is fixedly arranged on the two side walls of the installation groove 16, and the fixed column 17 penetrates through the rotating plate 18. The side of the rotating plate 18 close to the fixed insertion rod 10 is provided with a groove, and the middle groove of the rotating plate 18 corresponds in position to the fixed guide block 14.

[0023] When the fixed insertion rod 10 is installed, first, the fixed insertion rod 10 is inserted into the installation block 8, the connecting bolt 9 is screwed through the fixed screw hole 11 and the fixed insertion rod 10, so that the position of the fixed insertion rod 10 is fixed, the fixed insertion rod 10 is inserted into the anchor head 24, the driving nut 20 is rotated, the driving nut 20 is rotated, the rotating connecting pipe 21 is rotated and moved downward at the same time, at this time, the external sleeve 15 and the guide rail 19 slide along the clamping strip 13 outside the fixed insertion rod 10, at the same time, the rotating plate 18 moves relative to the fixed guide block 14, the fixed guide block 14 gradually contacts the edge of the groove of the rotating plate 18, so that the rotating plate 18 rotates along the fixed column 17, so that one end of the rotating plate 18 extends to the outside of the installation groove 16 after rotation, and contacts the inner wall of the anchor head 24, thereby fixing the external sleeve 15, and fixing it in the anchor head 24.

[0024] When the embodiment of the application is used:

[0025] When the device is used, first, the anchor head 24 and the anchor jaw 25 are inserted into the pre-formed installation hole, the anchor head 24 is fixed by the contact between the anchor jaw 25 and the inner wall of the installation hole, then one end of each steel wire rope wound on the scale ruler roller 6 is connected with the base point arranged inside the installation hole through the through hole formed by the cross partition plate 23 and the fixed insertion rod 10, the other end of the steel wire rope is connected with the base point arranged inside the installation hole, the sensing wire is connected with the plug 7, a complete transmission line is formed, then the fixed insertion rod 10 is inserted into the installation block 8, the connecting bolt 9 is screwed with the fixed insertion rod 10 through the fixed screw hole 11, the position of the fixed insertion rod 10 is fixed, the fixed insertion rod 10 is inserted into the anchor head 24, the driving nut 20 is rotated, the driving nut 20 is rotated and moves downward at the same time, at this time, the outer sleeve 15 and the guide rail 19 slide along the clamping strip 13 outside the fixed insertion rod 10, at the same time, the rotating plate 18 moves relative to the fixed guide block 14, the fixed guide block 14 gradually contacts the groove edge of the rotating plate 18, the rotating plate 18 rotates along the fixed column 17, one end of the rotating plate 18 extends to the outside of the installation groove 16 after rotation and contacts the inner wall of the anchor head 24, the outer sleeve 15 is fixed in the anchor head 24, then the scale ruler roller 6 is rotated to wind the steel wire rope, the steel wire rope which is not wound is tightened, then the outer cover plate 3 is installed.

[0026] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-point displacement sensor for mining applications, comprising a sensor body (1), characterized in that: A mounting block (8) is fixedly installed in the middle of the top surface of the sensor body (1). Connecting bolts (9) are threaded through both ends of the mounting block (8). A fixing rod (10) is inserted into the top of the mounting block (8). A fixing screw hole (11) is opened at the bottom end of the fixing rod (10). A threaded thread (12) is opened on the side wall of the bottom end of the fixing rod (10). A retaining strip (13) is provided on the outer wall of the fixing rod (10). A cross partition (23) is provided inside the fixing rod (10). Equally spaced partitions are symmetrically arranged on the outer wall of the fixing rod (10). The fixed guide block (14) of the cloth, the fixed plug rod (10) is movably connected to the outside of the outer sleeve (15), the inner wall of the outer sleeve (15) near the sensor body (1) is fixedly provided with an arc groove (22), the arc groove (22) is movably engaged with a drive component inside, the outer sleeve (15) is symmetrically provided with an installation groove (16), the installation groove (16) is installed with a rotation positioning component inside, the outer sleeve (15) is slidably fitted with an anchor head (24) on the outside, and the anchor head (24) is fixedly connected with an anchor claw (25) on the outside.

2. The multi-point displacement sensor for mining applications according to claim 1, characterized in that: The drive assembly includes a drive nut (20) and a rotating connecting pipe (21). The rotating connecting pipe (21) is rotatably connected inside the mounting groove (16). One end of the rotating connecting pipe (21) is fixedly connected to the drive nut (20). The drive nut (20) is sleeved on the outside of the fixed insert (10).

3. A mining fiber optic multi-point displacement sensor according to claim 1, characterized in that: The rotation positioning assembly includes a fixed column (17) and a rotating plate (18). The rotating plate (18) is provided inside the mounting groove (16). The fixed column (17) is fixedly mounted on both sides of the mounting groove (16). The fixed column (17) passes through the rotating plate (18).

4. A mining fiber optic multi-point displacement sensor according to claim 1, characterized in that: The outer sleeve (15) has a guide rail (19) fixedly installed on its solid inner wall, and the guide rail (19) matches the locking strip (13).

5. A mining fiber optic multi-point displacement sensor according to claim 3, characterized in that: The rotating plate (18) has a groove on the side near the fixed rod (10), and the groove in the middle of the rotating plate (18) corresponds to the position of the fixed guide block (14).

6. A mining fiber optic multi-point displacement sensor according to claim 1, characterized in that: The sensor body (1) has a top plate (2) fixedly mounted on its top. The sensor body (1) has symmetrically opened mounting cavities (4) on both sides. A screw (5) is fixedly installed inside the mounting cavity (4). A scale roller (6) is sleeved on the outside of the screw (5). A plug (7) is provided on one side of the sensor body (1). External cover plates (3) are installed at both ends of the sensor body (1) by bolts.

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