Displacement sensor for coal mine hydraulic support

Abstract

The utility model discloses a displacement sensor for a coal mine hydraulic support, which relates to the field of displacement sensors for coal mine hydraulic supports, and comprises a detection block, a fixed ring arranged in the detection block, a laser pen arranged in the fixed ring, a movable block arranged at the top of the laser pen, and an inner tooth groove arranged in the movable block. A driving shaft is installed in the inner tooth groove, a gear is arranged at the rear end of the driving shaft, the driving shaft is installed in the inner tooth groove through the gear, a plurality of anti-skid lines are arranged at the front end of the driving shaft and annularly distributed at the front end of the driving shaft, first protection glass is arranged at the bottom of the detection block, and an observation block is arranged at the right end of the driving detection block. An installation hole is formed in the observation block, a detection plate is installed in the observation block, and scale marks are arranged on the top of the detection plate, displacement can be displayed on the detection plate when the hydraulic support moves, and if the displacement angle is too large, a lamp can be turned on to give an alarm.

Description

Technical Field

[0001] The utility model relates to the field of displacement sensors for coal mine hydraulic supports, in particular to a displacement sensor for coal mine hydraulic supports. Background Art

[0002] Hydraulic supports are structures used to control the mine pressure at the coal mining face. The mine pressure at the mining face acts on the hydraulic supports in the form of external loads. In the mechanical system of the interaction between the hydraulic supports and the surrounding rock of the mining face, if the combined force of the supporting parts of the hydraulic supports and the combined force of the external load acting on the hydraulic supports by the roof are exactly in the same straight line, then the hydraulic supports are very suitable for the surrounding rock of this mining face. Hydraulic supports are one of the most important equipment in coal mine comprehensive mining equipment. They are mainly used for mining and supporting the roof of the underground working face of coal mines to protect the safety of equipment and personnel. The number of hydraulic supports in a comprehensive mining working face of a coal mine is about 100. The hydraulic supports designed and used are basically different according to the mining height, slope, mineral structure and environment of each coal mine.

[0003] After exploring the existing Chinese patent: a detachable magnetostrictive displacement sensor for coal mine hydraulic support (Announcement No.: CN210603165U), including a connecting end, a shell and an internal detection device, the connecting end is threadedly connected to the shell, the connecting end includes a clamping head, a clamping claw, a clamping seal ring, and a threaded double joint, the inner wall of the clamping head is connected to the clamping seal ring through the clamping claw, the inner wall of the clamping head is threadedly connected to one end of the threaded double joint, the other end of the threaded double joint is threadedly connected to the shell, one end of the shell is provided with an internal detection component, the middle part of the shell is provided with a signal compensation component, the other end of the shell is provided with a sensitive device positioning rod, the external lead passes through the clamping head and is connected to the cable of the internal detection component through the transfer connector, and a displacement magnetic ring is provided on the outer wall of the shell. The utility model is simple and convenient to replace and repair, and reduces the detection blind area.

[0004] The above patent has simple and convenient replacement and maintenance operations and reduces the detection blind area. However, the coal mine hydraulic support is used to support the coal mine, so serious accidents may be found when the support is displaced. Very precise detection is required during detection, and the above patent cannot complete accurate displacement detection during detection. Therefore, it is necessary to invent a displacement sensor for a coal mine hydraulic support to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a displacement sensor for a coal mine hydraulic support to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a displacement sensor for a coal mine hydraulic support, comprising a detection block, a fixed ring is installed inside the detection block, a laser pen is installed inside the fixed ring, a movable block is arranged on the top of the laser pen, an internal tooth groove is provided inside the movable block, a driving shaft is installed inside the internal tooth groove, a gear is provided at the rear end of the driving shaft, the driving shaft is installed in the internal tooth groove through the gear, and the front end of the driving shaft is provided with anti-skid grooves, and the anti-skid grooves are distributed in a ring shape at the front end of the driving shaft, a first protective glass is provided at the bottom of the detection block, an observation block is provided at the right end of the detection block, a mounting hole is provided inside the observation block, a detection plate is installed inside the observation block, a scale mark is provided on the top of the detection plate, and the scale mark has multiple linear distributions on the top of the detection plate.

[0007] Preferably, sensing blocks are provided on the left and right sides of the detection plate.

[0008] Preferably, a signal line is provided at one end of the sensing block, and the signal line is installed inside the mounting hole.

[0009] Preferably, a light bulb is installed on the top of the signal line, and the light bulb is located on the top of the observation block.

[0010] Preferably, a second protective glass is provided at the bottom of the viewing block.

[0011] Preferably, a third protective glass is provided on the top of the observation block.

[0012] Preferably, a fixing block is provided at the bottom of the outer wall of the detection block and the observation block.

[0013] Technical effects and advantages of the utility model:

[0014] 1. When setting up and using, fix the device at the specified position through the fixed block. It is necessary to align the bottom of the device with the hydraulic support, then turn on the laser pen, and irradiate the light on the hydraulic support. Then, by rotating the drive shaft, drive the movable block to rotate, and drive the laser pen to rotate at the same time. Then adjust the light to irradiate the hydraulic support and then reflect it on the detection board. Then continue to rotate the drive shaft to adjust the light to the scale mark in the middle of the detection board. The advantage is that the displacement of the hydraulic support can be accurately measured by laser.

[0015] 2. By setting up the detection board, scale mark, sensor block, signal line and light bulb, if the hydraulic support rises and falls, the light will be displaced on the hydraulic support and on the detection board at the same time. The staff can observe the displacement value from the scale mark. If the degree of displacement is too large, the light will move out of the detection board and shine on the sensor block. When the sensor block receives the light, it will transmit the signal to the light bulb through the signal line, and then the light bulb will light up after receiving the signal. It can be displayed on the detection board when the hydraulic support is displaced. If the displacement angle is too large, the light will light up to issue a warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a displacement sensor for a coal mine hydraulic support.

[0018] Figure 2 The utility model is a schematic diagram of the printed structure of a displacement sensor for a coal mine hydraulic support.

[0019] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a displacement sensor for a coal mine hydraulic support.

[0020] Figure 4 for Figure 3 A is an enlarged schematic diagram of the structure.

[0021] In the figure: 1. detection block; 2. fixed ring; 3. laser pen; 4. movable block; 5. internal tooth groove; 6. driving shaft; 7. gear; 8. anti-slip pattern; 9. first protective glass; 10. observation block; 11. mounting hole; 12. detection plate; 13. scale mark; 14. sensor block; 15. signal line; 16. light bulb; 17. second protective glass; 18. third protective glass; 19. fixed block. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figure 1-4 The displacement sensor for coal mine hydraulic support shown in the figure includes a detection block 1, wherein the detection block 1 can be installed with a fixed ring 2 inside, the detection block 1 is installed with a fixed ring 2 inside, wherein the fixed ring 2 is installed inside the detection block 1, and a laser pen 3 can be installed inside, and the laser pen 3 is installed inside the fixed ring 2, wherein the laser pen 3 is installed inside the fixed ring 2, and can be used to emit light, and a movable block 4 is arranged on the top of the laser pen 3, wherein the movable block 4 is arranged on the top of the laser pen 3, and can drive the laser pen 3 to rotate, and an inner tooth groove 5 is opened inside the movable block 4, wherein the inner tooth groove 5 is opened inside the movable block 4, and a driving shaft 6 can be installed inside, and the inner tooth groove 5 is installed with a driving shaft 6, wherein the driving shaft 6 is installed inside the inner tooth groove 5, and can be used to drive the driving shaft 6 to rotate, and a gear 7 is arranged at the rear end of the driving shaft 6, wherein the gear 7 is arranged at the rear end of the driving shaft 6, and can be used to drive the driving shaft 6 to rotate, and the driving shaft 6 is installed in the inner tooth groove 5 through the gear 7, and the front end of the driving shaft 6 is arranged Anti-skid patterns 8 are provided, and multiple anti-skid patterns 8 are distributed in a ring shape at the front end of the driving shaft 6, wherein multiple anti-skid patterns 8 are distributed in a ring shape at the front end of the driving shaft 6, which can be used for anti-skid. A first protective glass 9 is provided at the bottom of the detection block 1, wherein the first protective glass 9 is provided at the bottom of the detection block 1 to protect the bottom of the detection block 1. An observation block 10 is provided at the right end of the detection block 1, wherein the observation block 10 is provided at the right end of the detection block 1, and a detection plate 12 can be installed inside. A mounting hole 11 is opened inside the observation block 10, wherein the mounting hole 11 is opened inside the observation block 10, and a signal line 15 can be installed inside. A detection plate 12 is installed inside the observation block 10, wherein the detection plate 12 is installed inside the observation block 10, and can be used to detect the displacement of the hydraulic support. A scale mark 13 is provided on the top of the detection plate 12, and multiple scale marks 13 are distributed in a linear shape on the top of the detection plate 12, wherein multiple scale marks 13 are distributed in a linear shape on the top of the detection plate 12, and the displacement value of the hydraulic support can be displayed.

[0024] The left and right sides of the detection board 12 are provided with sensing blocks 14 , wherein the sensing blocks 14 are provided on the left and right sides of the detection board 12 to sense light.

[0025] A signal line 15 is disposed at one end of the sensing block 14 , wherein the signal line 15 is disposed at one end of the sensing block 14 and can be used to transmit signals. The signal line 15 is installed inside the mounting hole 11 .

[0026] A light bulb 16 is installed on the top of the signal line 15 , wherein the light bulb 16 is installed on the top of the signal line 15 and can light up to warn when the displacement value is large. The light bulb 16 is located on the top of the observation block 10 .

[0027] A second protective glass 17 is disposed at the bottom of the observation block 10 , wherein the second protective glass 17 is disposed at the bottom of the observation block 10 , so that the bottom of the observation block 10 can be protected.

[0028] A third protective glass 18 is disposed on the top of the observation block 10 , wherein the third protective glass 18 is disposed on the top of the observation block 10 , so that the top of the observation block 10 can be protected.

[0029] A fixing block 19 is provided at the bottom of the outer wall of the detection block 1 and the observation block 10, wherein the fixing block 19 is provided on the outer wall of the detection block 1 and the observation block 10 to fix the equipment.

[0030] Working principle: When in use, fix the device at the specified position through the fixing block 19, align the bottom of the device with the hydraulic support, then turn on the laser pen 3, and irradiate the light on the hydraulic support. Then, by rotating the driving shaft 6, drive the movable block 4 to rotate, and drive the laser pen 3 to rotate at the same time. Then adjust the light to irradiate the light on the hydraulic support and then reflect it on the detection plate 12. Then continue to rotate the driving shaft 6 to adjust the light to the scale mark 13 in the middle of the detection plate 12. If the hydraulic support rises and falls, the light will be displaced on the hydraulic support and on the detection plate 12 at the same time. The staff can observe the displacement value from the scale mark 13. If the degree of displacement is too large, the light will move out of the detection plate 12 and irradiate on the sensing block 14. When the sensing block 14 is irradiated with light, it will transmit a signal to the light bulb 16 through the signal line 15, and then the light bulb 16 will light up after receiving the signal.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A displacement sensor for a coal mine hydraulic support, comprising a detection block (1), characterized in that: A fixing ring (2) is installed inside the detection block (1), a laser pen (3) is installed inside the fixing ring (2), a movable block (4) is arranged on the top of the laser pen (3), an inner tooth groove (5) is provided inside the movable block (4), a driving shaft (6) is installed inside the inner tooth groove (5), a gear (7) is arranged at the rear end of the driving shaft (6), the driving shaft (6) is installed in the inner tooth groove (5) through the gear (7), and an anti-slip groove (8) is arranged at the front end of the driving shaft (6) The anti-slip pattern (8) has a plurality of ring-shaped distributions at the front end of the driving shaft (6); a first protective glass (9) is provided at the bottom of the detection block (1); an observation block (10) is provided at the right end of the detection block (1); a mounting hole (11) is provided inside the observation block (10); a detection plate (12) is installed inside the observation block (10); a scale mark (13) is provided at the top of the detection plate (12); and a plurality of scale marks (13) are linearly distributed on the top of the detection plate (12).

2. A displacement sensor for a coal mine hydraulic support according to claim 1, characterized in that: Induction blocks (14) are arranged on the left and right sides of the detection plate (12).

3. A displacement sensor for a coal mine hydraulic support according to claim 2, characterized in that: A signal line (15) is provided at one end of the induction block (14), and the signal line (15) is installed inside the mounting hole (11).

4. A displacement sensor for a coal mine hydraulic support according to claim 3, characterized in that: A light bulb (16) is installed on the top of the signal line (15), and the light bulb (16) is located on the top of the observation block (10).

5. The displacement sensor for coal mine hydraulic support according to claim 1, characterized in that: A second protective glass (17) is provided at the bottom of the observation block (10).

6. The displacement sensor for coal mine hydraulic support according to claim 1, characterized in that: A third protective glass (18) is provided on the top of the observation block (10).

7. The displacement sensor for coal mine hydraulic support according to claim 1, characterized in that: A fixing block (19) is provided at the bottom of the outer wall of the detection block (1) and the observation block (10).

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