Explosion-proof laser ranging sensor structure with elevation angle adjustment function

Abstract

The utility model discloses an explosion-proof laser ranging sensor structure with elevation angle adjustment, which comprises a shell, a top opening of the shell, a partition plate arranged in the middle of the shell, a wire passing hole arranged in the middle of the bottom of the partition plate, a front cabin arranged on one side of the shell, a rear cabin arranged on the other side of the shell, an end face opening of the front cabin, a high lens arranged at the opening, and a laser probe arranged in the front cabin, a signal acquisition processor is mounted in the rear cabin; a rear upper cover is mounted at the top; a gradienter is mounted at the top of the rear upper cover; the signal acquisition processor is connected with the laser probe through a signal line; according to the utility model, the elevation angle adjusting bracket is arranged at the bottom of the shell, so that the elevation angle of the laser distance measuring sensor can be conveniently adjusted according to actual working conditions, and the explosion-proof hose joint is arranged, so that the fire and explosion risks of the laser distance measuring sensor are reduced, and the laser distance measuring sensor can keep high accuracy and reliability in extreme working environments.

Description

TECHNICAL FIELD

[0001] The utility model belongs to laser ranging technical field relates to the laser ranging sensor structure of anti -explosion type with elevation angle adjustment. BACKGROUND

[0002] Laser ranging technology has been widely used in many fields with its high precision, non-contact measurement and other advantages. Laser ranging sensor works based on the principle of laser time of flight, that is, by emitting laser pulse and measuring the time experienced from emission to reflection back to the receiving end, and combining the speed of light to calculate the distance between the target object and the sensor. In its structure, it generally includes laser probe, signal acquisition board, signal processing unit and power supply and control unit. Laser emitting unit is responsible for generating high intensity laser pulse, and common laser source is semiconductor laser and the like. Laser receiving unit is used for receiving the reflected laser signal, and usually uses photodetector, such as avalanche photodiode. Signal processing unit amplifies, filters, shapes and processes the weak electric signal received by the receiving unit, so as to calculate the accurate distance value. Optical system includes transmitting optical system and receiving optical system, transmitting optical system collimates laser beam into specific divergence angle and transmits it, and receiving optical system collects reflected laser signal and focuses on receiving unit. Power supply and control unit provides stable power supply for the whole sensor, and controls the working time sequence and parameter setting of each unit.

[0003] In some special industrial environments, such as oil and gas, coal mine and other places where flammable and explosive gas or dust exists, ordinary laser ranging sensor cannot meet the ranging demand in these dangerous environments because its electrical elements may produce electric spark or high temperature surface in the working process, which may easily cause explosion accident. For example, in the oil and gas storage tank area, it is necessary to accurately measure the liquid level in the tank or the distance between the tanks, but once the existing non-explosion-proof laser ranging sensor is used in this environment, the tiny electric spark generated by the internal circuit may ignite the surrounding oil and gas mixture, causing serious explosion disaster, which not only causes serious damage to the equipment, but also endangers the safety of personnel life and the normal production and operation of enterprises.

[0004] In actual measurement application scenarios, it is often necessary to measure the distance of targets at different heights or different elevation positions. However, many existing laser ranging sensors have obvious deficiencies in elevation adjustment. Most of the sensor installation structures are relatively fixed, and can only be fine-tuned within a limited angle range, or do not have the function of adjusting the elevation at all. For example, when power line inspection is carried out in a complex mountainous area, it is necessary to measure the distance of towers at different heights and components at different positions on the towers. Due to the inability of the sensor to conveniently adjust the elevation, it is often necessary to re-adjust the installation position or posture of the entire measurement equipment, which not only increases the time cost and labor cost of measurement, but also may not be able to achieve ideal adjustment of the measurement angle in some special terrain or restricted space, thereby affecting the accuracy and comprehensiveness of the measurement. In addition, in the field of building construction, for the measurement of different floor heights or different inclined angle structures of buildings, the existing laser ranging sensor is also difficult to efficiently and accurately complete the measurement task due to the inconvenience of elevation adjustment, thereby limiting its wide application in multiple scenarios.

[0005] In summary, the shortcomings of the existing laser ranging sensor, such as the inability to prevent explosion and the inconvenience of elevation adjustment, to a great extent, limit its application in dangerous environments and complex measurement scenarios, and urgent technical improvement and innovation are needed to expand its application range and meet the growing measurement needs in more fields. Practical new type content

[0006] The purpose of the present application is to provide an explosion-proof laser ranging sensor structure with elevation adjustment, which solves the problems of the existing laser ranging sensor structure that is difficult to adjust the elevation and cannot prevent explosion.

[0007] The technical scheme adopted by the present application is an explosion-proof laser ranging sensor structure with elevation adjustment, which comprises a shell, an opening at the top of the shell, a partition plate in the middle, a wire hole in the middle of the bottom of the partition plate, a front cabin on one side of the shell and a rear cabin on the other side, an opening at the end face of the front cabin, a high lens installed at the opening, a laser probe installed inside the front cabin, a front upper cover installed at the top, a signal acquisition processor installed inside the rear cabin, a rear upper cover installed at the top, a level installed at the top of the rear upper cover, the signal acquisition processor and the laser probe connected by a signal line, an explosion-proof hose joint installed at the end face of the rear cabin, and an elevation adjustment bracket installed at the bottom of the shell.

[0008] The end face of the front cabin is provided with a lens pressing plate and a sealing gasket, the sealing gasket is located between the high lens and the end face of the front cabin, and the lens pressing plate is located outside the high lens.

[0009] A foam pad is provided at the top of the front cabin, and the foam pad is located between the front cabin and the front upper cover.

[0010] A front cabin sealing strip is provided at the joint of the front upper cover and the front cabin.

[0011] The rear upper cover is provided with a rear cabin sealing strip at the joint with the rear cabin.

[0012] The rear cabin end face is provided with a threaded hole, and the one end of the explosion-proof hose joint is installed in the threaded hole.

[0013] The elevation angle adjusting support is connected and fixed to the opposite two side faces of the shell through screws A, and the bottom face of the elevation angle adjusting support is provided with a long slot.

[0014] The front upper cover is connected and fixed to the front cabin through screws B, and the rear upper cover is connected and fixed to the rear cabin through screws C.

[0015] The rear cabin end face is provided with a grounding screw.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) The elevation angle adjusting support is installed at the bottom of the shell, so that the laser ranging sensor elevation angle can be adjusted according to the actual working condition;

[0018] (2) The explosion-proof hose joint is installed, so that the risk of laser ranging sensor fire and explosion is reduced, and the laser ranging sensor can maintain high accuracy and reliability in extreme working environment;

[0019] (3) The front cabin end face is provided with a lens pressing plate and a sealing gasket, the sealing gasket is located between the high lens and the front cabin end face, and the lens pressing plate is located outside the high lens, so that the laser probe can be effectively protected, and dust, water vapor and the like are prevented from polluting the laser probe;

[0020] (4) The front cabin top is provided with a foam pad, the foam pad is located between the front cabin and the front upper cover, and the foam pad has a vibration-proof buffering effect on the laser probe;

[0021] (5) The front upper cover is provided with a front cabin sealing strip at the joint with the front cabin, and the rear upper cover is provided with a rear cabin sealing strip at the joint with the rear cabin, so that external water and the like are prevented from entering the sensor interior, and the normal use of the internal laser probe and signal acquisition processor is affected. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the explosion-proof laser ranging sensor with elevation angle adjustment of the utility model;

[0023] Figure 2 is a sectional view of the explosion-proof laser ranging sensor with elevation angle adjustment of the utility model;

[0024] Figure 3 is a front view of the explosion-proof laser ranging sensor with elevation angle adjustment of the utility model;

[0025] Figure 4is the side view of the explosion-proof laser ranging sensor with the elevation angle adjustment of the utility model;

[0026] Figure 5 is the plan view of the explosion-proof laser ranging sensor with the elevation angle adjustment of the utility model;

[0027] Figure 6 is the end face structure diagram of the front cabin in the explosion-proof laser ranging sensor with the elevation angle adjustment of the utility model;

[0028] Figure 7 is the structure diagram of the front upper cover in the explosion-proof laser ranging sensor with the elevation angle adjustment of the utility model;

[0029] Figure 8 is the structure diagram of the rear upper cover in the explosion-proof laser ranging sensor with the elevation angle adjustment of the utility model;

[0030] Figure 9 is the structure diagram of the elevation angle adjustment support and the explosion-proof hose joint in the explosion-proof laser ranging sensor with the elevation angle adjustment of the utility model;

[0031] Figure 10 is the explosion view of the explosion-proof laser ranging sensor with the elevation angle adjustment of the utility model.

[0032] In the figure, 1. shell, 2. partition, 3. wire hole, 4. front cabin, 5. rear cabin, 6. high lens, 7. laser probe, 8. signal acquisition processor, 9. explosion-proof hose joint, 10. elevation angle adjustment support, 11. front upper cover, 12. rear upper cover, 13. level, 14. lens pressing plate, 15. sealing gasket, 16. foam pad, 17. front cabin sealing strip, 18. rear cabin sealing strip, 19. threaded hole, 20. screw A, 21. screw B, 22. screw C, 23. grounding screw, 24. screw D. DETAILED DESCRIPTION

[0033] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0034] Example 1

[0035] A kind of explosion-proof laser ranging sensor structure with elevation angle adjustment, refer to Figure 1 And Figure 2, including the shell 1, the shell 1 top opening, middle is equipped with the partition 2, the partition 2 bottom middle is equipped with the wire hole 3, the shell 1 one side is the front cabin 4, the other side is the rear cabin 5, the front cabin 4 end face opening, opening installs high lens 6, the front cabin 4 inside installs laser probe 7, top installs the front upper cover 11, the rear cabin 5 inside installs signal acquisition processor 8, top installs the rear upper cover 12, the rear upper cover 12 top installs the level 13, signal acquisition processor 8 is connected with laser probe 7 through signal line, the rear cabin 5 end face installs the anti-explosion hose joint 9, the anti-explosion hose joint 9 is provided with signal transmission line connected with signal acquisition processor 8, the shell 1 bottom installs the elevation adjustment support 10.

[0036] Example 2

[0037] An explosion-proof laser ranging sensor structure with elevation adjustment, see Figures 3-5 , including the shell 1, the shell 1 top opening, middle is equipped with the partition 2, the partition 2 bottom middle is equipped with the wire hole 3, the shell 1 one side is the front cabin 4, the other side is the rear cabin 5, the front cabin 4 end face opening, opening installs high lens 6, the front cabin 4 inside installs laser probe 7, top installs the front upper cover 11, the rear cabin 5 inside installs signal acquisition processor 8, top installs the rear upper cover 12, the rear upper cover 12 top installs the level 13, signal acquisition processor 8 is connected with laser probe 7 through signal line, the rear cabin 5 end face installs the anti-explosion hose joint 9, the anti-explosion hose joint 9 is provided with signal transmission line connected with signal acquisition processor 8, the shell 1 bottom installs the elevation adjustment support 10.

[0038] See Figure 6 , the front cabin 4 end face is provided with lens pressing plate 14 and sealing gasket 15, sealing gasket 15 is located between high lens 6 and the end face of front cabin 4, lens pressing plate 14 is located on the outside of high lens 6, lens pressing plate 14 is fixed with sealing gasket 15 and front cabin 4 by screw D24.

[0039] Example 3

[0040] An explosion-proof laser ranging sensor structure with elevation adjustment, including the shell 1, the shell 1 top opening, middle is equipped with the partition 2, the partition 2 bottom middle is equipped with the wire hole 3, the shell 1 one side is the front cabin 4, the other side is the rear cabin 5, the front cabin 4 end face opening, opening installs high lens 6, the front cabin 4 inside installs laser probe 7, top installs the front upper cover 11, the rear cabin 5 inside installs signal acquisition processor 8, top installs the rear upper cover 12, the rear upper cover 12 top installs the level 13, signal acquisition processor 8 is connected with laser probe 7 through signal line, the rear cabin 5 end face installs the anti-explosion hose joint 9, the anti-explosion hose joint 9 is provided with signal transmission line connected with signal acquisition processor 8, the shell 1 bottom installs the elevation adjustment support 10.

[0041] The end face of the front cabin 4 is provided with a lens pressing plate 14 and a sealing gasket 15, the sealing gasket 15 is located between the high lens 6 and the end face of the front cabin 4, and the lens pressing plate 14 is located outside the high lens 6. The lens pressing plate 14 is fixed with the sealing gasket 15 and the front cabin 4 by screws D24.

[0042] Referring to Figure 7 The top of the front cabin 4 is provided with a foam pad 16, which is located between the front cabin 4 and the front upper cover 11.

[0043] Example 4

[0044] An explosion-proof laser ranging sensor structure with elevation angle adjustment, comprising a shell 1, the top of the shell 1 is open, a partition plate 2 is arranged in the middle, a wire hole 3 is arranged in the middle of the bottom of the partition plate 2, one side of the shell 1 is a front cabin 4, and the other side is a rear cabin 5. The end face of the front cabin 4 is open, a high lens 6 is installed at the opening, a laser probe 7 is installed inside the front cabin 4, a front upper cover 11 is installed at the top, a signal acquisition processor 8 is installed inside the rear cabin 5, a rear upper cover 12 is installed at the top, a level 13 is installed at the top of the rear upper cover 12, the signal acquisition processor 8 is connected with the laser probe 7 through a signal line, an explosion-proof hose joint 9 is installed at the end face of the rear cabin 5, the explosion-proof hose joint 9 is provided with a signal transmission line connected with the signal acquisition processor 8, and an elevation angle adjustment support 10 is installed at the bottom of the shell 1.

[0045] The end face of the front cabin 4 is provided with a lens pressing plate 14 and a sealing gasket 15, the sealing gasket 15 is located between the high lens 6 and the end face of the front cabin 4, and the lens pressing plate 14 is located outside the high lens 6. The lens pressing plate 14 is fixed with the sealing gasket 15 and the front cabin 4 by screws D24.

[0046] The front cabin 4 is provided with a front cabin sealing strip 17 at the joint with the front upper cover 11, and the rear cabin 5 is provided with a rear cabin sealing strip 18 at the joint with the rear upper cover 12.

[0047] Example 5

[0048] An explosion-proof laser ranging sensor structure with elevation angle adjustment, comprising a shell 1, the top of the shell 1 is open, a partition plate 2 is arranged in the middle, a wire hole 3 is arranged in the middle of the bottom of the partition plate 2, one side of the shell 1 is a front cabin 4, and the other side is a rear cabin 5. The end face of the front cabin 4 is open, a high lens 6 is installed at the opening, a laser probe 7 is installed inside the front cabin 4, a front upper cover 11 is installed at the top, a signal acquisition processor 8 is installed inside the rear cabin 5, a rear upper cover 12 is installed at the top, a level 13 is installed at the top of the rear upper cover 12, the signal acquisition processor 8 is connected with the laser probe 7 through a signal line, an explosion-proof hose joint 9 is installed at the end face of the rear cabin 5, the explosion-proof hose joint 9 is provided with a signal transmission line connected with the signal acquisition processor 8, and an elevation angle adjustment support 10 is installed at the bottom of the shell 1.

[0049] The front cabin and the rear cabin are relatively independent, and the laser probe can be avoided from being affected during wiring use and maintenance.

[0050] The front cabin 4 is provided with a lens pressing plate 14 and a sealing gasket 15 at the end face, the sealing gasket 15 is located between the high lens 6 and the end face of the front cabin 4, and the lens pressing plate 14 is located outside the high lens 6, and the lens pressing plate 14 is fixed together with the sealing gasket 15 and the front cabin 4 through screws D24.

[0051] Referring to Figure 8 , the front cabin sealing strip 17 is arranged at the abutment of the front upper cover 11 and the front cabin 4. The rear cabin sealing strip 18 is arranged at the abutment of the rear upper cover 12 and the rear cabin 5.

[0052] Referring to Figure 9 , the rear cabin 5 is provided with a threaded hole 19 at the end face, and one end of the explosion-proof hose joint 9 is installed in the threaded hole 19. The elevation adjustment bracket 10 is connected and fixed to the opposite two side faces of the shell 1 through screws A20, and the bottom face of the elevation adjustment bracket 10 is provided with a long slot.

[0053] Embodiment 6

[0054] An explosion-proof laser ranging sensor structure with elevation adjustment, referring to Figure 10 , comprising a shell 1, the shell 1 is open at the top and is provided with a partition plate 2 in the middle, a wire passing hole 3 is formed in the middle of the bottom of the partition plate 2, one side of the shell 1 is a front cabin 4, and the other side is a rear cabin 5, the end face of the front cabin 4 is open, and a high lens 6 is installed at the opening, a laser probe 7 is installed in the front cabin 4, a front upper cover 11 is installed at the top, a signal acquisition processor 8 is installed in the rear cabin 5, a rear upper cover 12 is installed at the top, and a level 13 is installed at the top of the rear upper cover 12. When the environment needs to be used horizontally, the levelness of the sensor can be adjusted according to the position of the water bubble on the level. The signal acquisition processor 8 is connected with the laser probe 7 through a signal line, an explosion-proof hose joint 9 is installed at the end face of the rear cabin 5, the explosion-proof hose joint 9 is provided with a signal transmission line connected with the signal acquisition processor 8, and an elevation adjustment bracket 10 is installed at the bottom of the shell 1.

[0055] The laser probe 7 is provided with a laser emitter, a laser receiver and a photoelectric converter, the emitting port of the laser emitter and the receiving port of the laser receiver are opposite to the high lens, in application, laser is emitted outward through the laser emitter, the laser passes through the high lens and is irradiated on the detected object, the detected object reflects light, part of the reflected light passes through the high lens and is received by the laser receiver, the laser receiver transmits the received light signal to the photoelectric converter to convert into an electric signal, and transmits the electric signal to the signal acquisition processor through the signal line, the signal acquisition processor calculates the time required for the laser to meet the detected object and return to the laser receiver, so as to calculate the distance value, and transmits the distance value to the outside through the signal transmission line.

[0056] The utility model discloses a novel sensor shell structure, wherein the laser probe and signal acquisition processor are same as those in the existing ordinary laser ranging sensor.

[0057] The front compartment 4 is provided with a lens pressing plate 14 and a sealing gasket 15 on the end face, the sealing gasket 15 is located between the high lens 6 and the end face of the front compartment 4, and the lens pressing plate 14 is located outside the high lens 6.

[0058] The front upper cover 11 is provided with a front compartment sealing strip 17 at the joint with the front compartment 4, and the rear upper cover 12 is provided with a rear compartment sealing strip 18 at the joint with the rear compartment 5.

[0059] The rear compartment 5 is provided with a threaded hole 19 on the end face, and one end of the explosion-proof hose joint 9 is installed in the threaded hole 19.

[0060] The elevation angle adjusting support 10 is connected and fixed to the opposite sides of the shell 1 through screws A20, and the bottom surface of the elevation angle adjusting support 10 is provided with a long groove, so that the elevation angle adjusting support 10 can be fixed to the surface of other objects through bolts.

[0061] In the distance test working condition of non-horizontal use, the elevation angle of the laser ranging sensor can be adjusted through the elevation angle adjusting support, for example, the elevation angle adjusting support is installed at a low position, the front compartment end face is lifted to the target position by loosening the two side screws A20, and then the two side screws A20 are tightened, so that the elevation angle of the sensor is adjusted.

[0062] The front upper cover 11 is connected and fixed to the front compartment 4 through a screw B21, and the rear upper cover 12 is connected and fixed to the rear compartment 5 through a screw C22. The rear compartment 5 is provided with a grounding screw 23 on the end face, which is used for grounding the shell after the equipment is installed.

Claims

1. A structure of a laser ranging sensor with an angle of elevation adjustment, characterized in that, Including shell (1), shell (1) top opening, middle part is equipped with the partition (2), the partition (2) bottom middle part is equipped with the wire hole (3), shell (1) one side is front cabin (4), the other side is rear cabin (5), front cabin (4) end face opening, opening installs high lens (6), front cabin (4) inside installs laser probe (7), top installs front upper cover (11), rear cabin (5) inside installs signal acquisition processor (8), top installs rear upper cover (12), rear upper cover (12) top installs level (13), signal acquisition processor (8) is connected with laser probe (7) through signal line, rear cabin (5) end face installs anti-explosion hose joint (9), shell (1) bottom installs the elevation angle adjustment support (10).

2. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 1, characterized in that, The end face of the front cabin (4) is provided with a lens pressing plate (14) and a sealing gasket (15), the sealing gasket (15) is located between the high lens (6) and the end face of the front cabin (4), and the lens pressing plate (14) is located outside the high lens (6). The lens pressing plate (14) is fixed with the sealing gasket (15) and the front cabin (4) by screws D (24).

3. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 1, characterized in that, The top of the front cabin (4) is provided with a foam pad (16), and the foam pad (16) is located between the front cabin (4) and the front upper cover (11).

4. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 3, characterized in that, The front cabin sealing strip (17) is arranged at the joint of the front upper cover (11) and the front cabin (4).

5. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 1, characterized in that, The rear cabin sealing strip (18) is arranged at the joint of the rear upper cover (12) and the rear cabin (5).

6. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 1, characterized in that, The end face of the rear cabin (5) is provided with a threaded hole (19), and one end of the anti-explosion hose joint (9) is installed in the threaded hole (19).

7. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 1, characterized in that, The elevation angle adjustment support (10) is connected and fixed to the opposite sides of the shell (1) by screws A (20), and the bottom surface of the elevation angle adjustment support (10) is provided with a long groove.

8. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 1, characterized in that, The front upper cover (11) and the front cabin (4) are connected and fixed by screws B (21), and the rear upper cover (12) and the rear cabin (5) are connected and fixed by screws C (22).

9. The explosion-proof laser ranging sensor structure with built-in elevation adjustment according to claim 1, characterized in that, The grounding screw (23) is installed on the end face of the rear cabin (5).

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