1. The utility model provides a mining ann's type laser rangefinder, includes laser range finder (1), its characterized in that: the lower end of the laser range finder (1) is connected with a direction adjusting mechanism (2), the lower end of the direction adjusting mechanism (2) is connected with a support plate (3), the lower end of the support plate (3) is connected with a plurality of levelness adjusting mechanisms (4), the support plate (3) is detachably connected with a protective cover (5), the laser range finder (1) and the direction adjusting mechanism (2) are positioned in the protective cover (5), the levelness adjusting mechanisms (4) are symmetrically distributed at the lower end of the support plate (3), the upper end of the support plate (3) is connected with a first horizontal ruler (301) and a second horizontal ruler (302), and the first horizontal ruler (301) and the second horizontal ruler (302) are vertically distributed;

the direction adjusting mechanism (2) comprises an X axial rotating mechanism, a Y axial rotating mechanism connected to the X axial rotating mechanism and a circumferential rotating mechanism connected to the Y axial rotating mechanism, and the circumferential rotating mechanism is connected with the laser range finder (1).

2. The mining intrinsically safe laser ranging device of claim 1, wherein: the X-axis rotating mechanism comprises a first support (201) connected to the upper end of the supporting plate (3), a first rotating shaft (202) movably connected to the first support (201), a connecting block (203) and a first driven gear (205) connected to the middle of the first rotating shaft (202), a first speed reducing motor (204) detachably connected to the first support (201), a first driving gear (207) connected to an output shaft of the first speed reducing motor (204) and a first angle sensor (206) connected to one end of the first rotating shaft (202), a shell of the first angle sensor (206) is connected with the supporting plate (3), and the first driving gear (207) is meshed with the first driven gear (205).

3. The mining intrinsically safe laser ranging device of claim 2, wherein: the Y-axis rotating mechanism comprises a second support (208) connected to the upper end of the connecting block (203), a mounting plate (209) connected to the side wall of the second support (208), a second speed reducing motor (210) connected to the mounting plate (209), a second driving gear (211) connected to an output shaft of the second speed reducing motor (210), a second rotating shaft (212) movably connected to the second support (208), a connecting rod (215) connected to the middle of the second rotating shaft (212), a second driven gear (213) connected to one end of the second rotating shaft (212) and a second angle sensor (214) connected to the other end of the second rotating shaft (212), the second driving gear (211) is meshed with the second driven gear (213), and a shell of the second angle sensor (214) is connected with the second support (208).

4. The mining intrinsically safe laser ranging device of claim 3, wherein: the circumference slewing mechanism includes third pivot (216) of swing joint in connecting rod (215) upper end, locate the interior chamber in connecting rod (215), locate the third angle sensor in the interior chamber, connect third gear motor (218) at connecting rod (215) lateral wall, connect third drive gear (219) on third gear motor (218) output shaft and connect third driven gear (217) at third pivot (216) middle part position, third drive gear (219) and third driven gear (217) meshing, third pivot (216) inner chamber extends the one end in the chamber and is connected with the third angle sensor.

5. The mining intrinsically safe laser ranging device of claim 1, wherein: levelness adjustment mechanism (4) including connecting fixed stay post (401) at backup pad (3) lower extreme, locating travelling groove (402) in fixed stay post (401), swing joint adjusting ring (403) at fixed stay post (401) lower extreme, locating screw rod (404) in travelling groove (402), connect in interior stopper (405) of screw rod (404) one end and connect bottom plate (406) at the screw rod (404) other end, be equipped with on the inner wall of adjusting ring (403) with screw rod (404) matched with internal thread.

6. The mining intrinsically safe laser ranging device of claim 1, wherein: the upper end of backup pad (3) is connected with a plurality of limiting plate (303), the lower extreme of protection casing (5) is equipped with a plurality of and limiting plate (303) matched with spacing groove, is connected with spring (501) on the inner wall of spacing groove, and the lower extreme of spring (501) is connected with movable plate (502).

Background

Laser ranging (laser ranging) uses a laser as a light source to perform ranging. And are classified into a continuous laser and a pulse laser according to the way the laser operates. Helium neon, argon ion, krypton cadmium and other gas lasers work in a continuous output state and are used for phase type laser ranging; the double heterogeneous gallium arsenide semiconductor laser is used for infrared distance measurement; solid lasers such as ruby and neodymium glass are used for pulse type laser ranging. The laser range finder not only can work day and night but also can improve the range finding precision compared with a photoelectric range finder because of the characteristics of good monochromaticity, strong directivity and the like of laser and the integrated electronic circuit.

Laser rangefinders generally measure distance in two ways: pulse method and phase method. The process of pulse method ranging is as follows: the laser emitted by the distance measuring instrument is reflected by the measured object and then received by the distance measuring instrument, and the distance measuring instrument records the round-trip time of the laser. Half the product of the speed of light and the round trip time is the distance between the rangefinder and the object being measured. The accuracy of the pulse method for measuring distances is typically around +/-10 centimeters. In addition, the measurement blind area of such a range finder is typically around 1 meter.

Laser ranging is one of the ranging methods in optical ranging, and if the time required for light to travel back and forth once in the air at a speed c between A, B is t, the distance D between A, B points can be represented as follows.

D＝ct/2

In the formula:

d-distance between two points at station A, B;

c-speed;

t-the time required for the light to make one round trip A, B.

From the above formula, the distance to be measured A, B is actually the time t of light propagation to be measured, and the laser distance measuring instrument can be generally divided into two measuring forms, pulse type and phase type, according to the different measuring time method.

At present, in the field of coal mines, with the increase of the coal mining depth, the stress of surrounding rocks of a roadway is continuously increased, and the deformation of the roadway is increasingly serious. The method is used for measuring the deformation of surrounding rocks of the roadway (including the deformation of two sides and the approaching amount of the top and bottom plates), and supporting the damaged roadway in time, so that the safety production of the coal mine is ensured. However, in some roadways, the roadway is seriously damaged, the measurement of roadway deformation by adopting the laser range finder is difficult, the measurement result is not accurate, and a worker has great potential safety hazard in the measurement process, so that the effect of automatic multi-directional accurate measurement cannot be achieved.

Disclosure of Invention

The invention aims to solve the problems and provide the mining intrinsic safety type laser ranging device which is simple in structure and reasonable in design.

The invention realizes the purpose through the following technical scheme:

the mining intrinsic safety type laser range finder comprises a laser range finder, wherein the lower end of the laser range finder is connected with a direction adjusting mechanism, the lower end of the direction adjusting mechanism is connected with a supporting plate, the lower end of the supporting plate is connected with a plurality of levelness adjusting mechanisms, the supporting plate is detachably connected with a protective cover, the laser range finder and the direction adjusting mechanism are positioned in the protective cover, the levelness adjusting mechanisms are symmetrically distributed at the lower end of the supporting plate, the upper end of the supporting plate is connected with a first horizontal ruler and a second horizontal ruler, and the first horizontal ruler and the second horizontal ruler are vertically distributed;

the direction adjusting mechanism comprises an X axial rotating mechanism, a Y axial rotating mechanism connected to the X axial rotating mechanism and a circumferential rotating mechanism connected to the Y axial rotating mechanism, and the circumferential rotating mechanism is connected with the laser range finder.

As a further optimization scheme of the invention, the X-axis rotating mechanism comprises a first support connected to the upper end of the supporting plate, a first rotating shaft movably connected to the first support, a connecting block and a first driven gear connected to the middle position of the first rotating shaft, a first speed reducing motor detachably connected to the first support, a first driving gear connected to an output shaft of the first speed reducing motor, and a first angle sensor connected to one end of the first rotating shaft, wherein a shell of the first angle sensor is connected with the supporting plate, and the first driving gear is meshed with the first driven gear.

As a further optimization scheme of the invention, the Y-axis rotating mechanism comprises a second support connected to the upper end of the connecting block, a mounting plate connected to the side wall of the second support, a second speed reducing motor connected to the mounting plate, a second driving gear connected to an output shaft of the second speed reducing motor, a second rotating shaft movably connected to the second support, a connecting rod connected to the middle position of the second rotating shaft, a second driven gear connected to one end of the second rotating shaft and a second angle sensor at the other end, wherein the second driving gear is meshed with the second driven gear, and a shell of the second angle sensor is connected with the second support.

As a further optimization scheme of the invention, the circumferential rotating mechanism comprises a third rotating shaft movably connected to the upper end of the connecting rod, an inner chamber arranged in the connecting rod, a third angle sensor arranged in the inner chamber, a third speed reducing motor connected to the side wall of the connecting rod, a third driving gear connected to an output shaft of the third speed reducing motor and a third driven gear connected to the middle position of the third rotating shaft, wherein the third driving gear is meshed with the third driven gear, and one end of the third rotating shaft extending to the inner chamber is connected with the third angle sensor.

As a further optimization scheme of the invention, the levelness adjusting mechanism comprises a fixed support column connected to the lower end of the support plate, a moving groove arranged in the fixed support column, an adjusting ring movably connected to the lower end of the fixed support column, a screw rod arranged in the moving groove, an inner limiting block connected to one end of the screw rod and a bottom plate connected to the other end of the screw rod, wherein inner threads matched with the screw rod are arranged on the inner wall of the adjusting ring.

As a further optimization scheme of the invention, the upper end of the supporting plate is connected with a plurality of limiting plates, the lower end of the protective cover is provided with a plurality of limiting grooves matched with the limiting plates, the inner walls of the limiting grooves are connected with springs, and the lower ends of the springs are connected with the moving plate.

The invention has the beneficial effects that:

1) the invention can be adaptively adjusted according to different ground conditions under a mine, so that the supporting plate is in a horizontal state, the laser range finder can be ensured to be in an accurate state during measurement, and an accurate coordinate system is provided for the subsequent laser range finder during angle adjustment;

2) according to the invention, the laser range finder can be automatically adjusted at any angle through the direction adjusting mechanism, so that the laser range finder can measure distances in different directions, and the angle can be accurately adjusted or the angle can be adjusted, the measurement accuracy is greatly improved, and the risk of manual operation under a mine is reduced;

3) the invention has simple structure, high stability, reasonable design and convenient realization.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a mechanism schematic of the direction adjustment mechanism of the present invention;

FIG. 3 is a mating view of a second bracket and connecting rod of the present invention;

fig. 4 is a schematic structural view of the levelness adjusting mechanism of the present invention.

In the figure: 1. a laser range finder; 2. a direction adjustment mechanism; 201. a first bracket; 202. a first rotating shaft; 203. connecting blocks; 204. a first reduction motor; 205. a first driven gear; 206. a first angle sensor; 207. a first drive gear; 208. a second bracket; 209. mounting a plate; 210. a second reduction motor; 211. a second drive gear; 212. a second rotating shaft; 213. a second driven gear; 214. a second angle sensor; 215. a connecting rod; 216. a third rotating shaft; 217. a third driven gear; 218. a third reduction motor; 219. a third drive gear; 3. a support plate; 301. a first level; 302. a second level; 303. a limiting plate; 4. a levelness adjusting mechanism; 401. fixing the support columns; 402. a moving groove; 403. an adjusting ring; 404. a screw; 405. an inner limiting block; 406. a base plate; 5. a protective cover; 501. a spring; 502. and (5) moving the plate.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Example 1

As shown in fig. 1-4, an intrinsically safe laser range finder for mining comprises a laser range finder 1, wherein the lower end of the laser range finder 1 is connected with a direction adjusting mechanism 2, the lower end of the direction adjusting mechanism 2 is connected with a support plate 3, the lower end of the support plate 3 is connected with a plurality of levelness adjusting mechanisms 4, the support plate 3 is detachably connected with a protective cover 5, the laser range finder 1 and the direction adjusting mechanism 2 are positioned in the protective cover 5, the plurality of levelness adjusting mechanisms 4 are symmetrically distributed at the lower end of the support plate 3, the upper end of the support plate 3 is connected with a first horizontal ruler 301 and a second horizontal ruler 302, and the first horizontal ruler 301 and the second horizontal ruler 302 are vertically distributed;

the levelness adjusting mechanism 4 comprises a fixed support column 401 connected to the lower end of the support plate 3, a moving groove 402 arranged in the fixed support column 401, an adjusting ring 403 movably connected to the lower end of the fixed support column 401, a screw 404 arranged in the moving groove 402, an inner limiting block 405 connected to one end of the screw 404, and a bottom plate 406 connected to the other end of the screw 404, wherein inner threads matched with the screw 404 are arranged on the inner wall of the adjusting ring 403.

When the device is installed in different positions under a mine for the first time, the levelness of the support plate 3 can be adjusted according to the concave-convex degree of the actual ground, during adjustment, the screw rod 404 is driven to move in the moving groove 402 through rotating the adjusting ring 403, the length of the fixed supporting column 401 is extended out of the adjustable screw rod 404, convenient adjustment can be performed on the height of four corners of the support plate 3, whether the support plate 3 is in a horizontal state or not is observed according to the first horizontal rule 301 and the second horizontal rule 302 during adjustment, the adjustment is stopped when the first horizontal rule 301 and the second horizontal rule 302 are in the horizontal state, the support plate 3 is in the horizontal state at the moment, the state where the laser range finder 1 is located during the initial measurement can be ensured to be in the horizontal state, and an accurate coordinate system can be provided for subsequent adjustment.

The direction adjusting mechanism 2 comprises an X axial rotating mechanism, a Y axial rotating mechanism connected to the X axial rotating mechanism and a circumferential rotating mechanism connected to the Y axial rotating mechanism, and the circumferential rotating mechanism is connected with the laser range finder 1.

The X-axis rotating mechanism comprises a first support 201 connected to the upper end of the supporting plate 3, a first rotating shaft 202 movably connected to the first support 201, a connecting block 203 and a first driven gear 205 connected to the middle position of the first rotating shaft 202, a first speed reducing motor 204 detachably connected to the first support 201, a first driving gear 207 connected to an output shaft of the first speed reducing motor 204, and a first angle sensor 206 connected to one end of the first rotating shaft 202, wherein a shell of the first angle sensor 206 is connected with the supporting plate 3, and the first driving gear 207 is meshed with the first driven gear 205.

When adjusting laser range finder 1's measuring direction, the first drive gear 207 of accessible first gear motor 204 drive rotates, first drive gear 207 drive first driven gear 205 rotates, first driven gear 205 rotates the first pivot 202 of back drive and rotates, first pivot 202 rotates the back and drives connecting block 203 and do with the angular rotation, and can drive Y axial slewing mechanism on the connecting block 203, circumference slewing mechanism and laser range finder 1 do with the angular rotation, and the turned angle of first pivot 202 is measured to the accuracy according to first angle sensor 206.

The Y-axis rotating mechanism comprises a second bracket 208 connected to the upper end of the connecting block 203, a mounting plate 209 connected to the side wall of the second bracket 208, a second speed reducing motor 210 connected to the mounting plate 209, a second driving gear 211 connected to the output shaft of the second speed reducing motor 210, a second rotating shaft 212 movably connected to the second bracket 208, a connecting rod 215 connected to the middle position of the second rotating shaft 212, a second driven gear 213 connected to one end of the second rotating shaft 212 and a second angle sensor 214 connected to the other end of the second rotating shaft 212, the second driving gear 211 is meshed with the second driven gear 213, and the shell of the second angle sensor 214 is connected with the second bracket 208.

Second drive gear 211 is driven through second gear motor 210 and rotates, second drive gear 211 drives second driven gear 213 and rotates, second driven gear 213 rotates the back and drives second pivot 212 with angular rotation, second pivot 212 rotates the back and drives connecting rod 215 with angular rotation, connecting rod 215 can drive circumference slewing mechanism and laser range finder 1 after rotating and do with angular rotation, and through the accurate turned angle who measures second pivot 212 of second angle sensor 214.

The circular rotating mechanism comprises a third rotating shaft 216 movably connected to the upper end of the connecting rod 215, an inner chamber arranged in the connecting rod 215, a third angle sensor arranged in the inner chamber, a third speed reducing motor 218 connected to the side wall of the connecting rod 215, a third driving gear 219 connected to an output shaft of the third speed reducing motor 218 and a third driven gear 217 connected to the middle position of the third rotating shaft 216, the third driving gear 219 is meshed with the third driven gear 217, and one end of the third rotating shaft 216 extending to the inner chamber is connected with the third angle sensor.

The third driving gear 219 is driven to rotate by the third speed reducing motor 218, the third driving gear 219 drives the third driven gear 217 to rotate after rotating, the third driven gear 217 drives the third rotating shaft 216 and the laser range finder 1 to rotate at the same angle, and the rotating angle of the third rotating shaft 216 can be accurately measured by the third angle sensor.

As shown in fig. 1 and fig. 2, the first rotating shaft 202 and the second rotating shaft 212 are distributed in a vertical crossing manner, when the measuring direction of the laser range finder 1 is adjusted, the laser range finder 1 can be adjusted at any angle according to the X axial rotating mechanism, the Y axial rotating mechanism connected to the X axial rotating mechanism and the circumferential rotating mechanism connected to the Y axial rotating mechanism, and an angle adjusting value can be accurately obtained in real time during adjustment, so that the accuracy of the laser range finder 1 during multi-angle measurement is greatly improved, remote adjustment can be performed through the work of a remote control motor, and the potential safety hazard of workers working under a mine is reduced.

The upper end of backup pad 3 is connected with a plurality of limiting plate 303, and the lower extreme of protection casing 5 is equipped with a plurality of and limiting plate 303 matched with spacing groove, is connected with spring 501 on the inner wall of spacing groove, and spring 501's lower extreme is connected with movable plate 502.

When not using, can carry out cage formula protection with office range finder and direction adjustment mechanism 2 through protection casing 5, and have the function of buffering pressure release between protection casing 5 and the backup pad 3, when protection casing 5 receives external impact force, the spring 501 of spacing inslot is compressed, and produce corresponding reaction force and offset the impact force, prevent that the impact force is direct to be strikeed the deformation with protection casing 5, can effectually protect its inside device, during the use directly take off with protection casing 5 can, it is comparatively convenient.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.