CN213573922U

CN213573922U - Coal mine drilling depth limiting device

Info

Publication number: CN213573922U
Application number: CN202021654467.5U
Authority: CN
Inventors: 蒙禹旺; 周波; 罗运坤; 刘帅岭
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-06-29
Anticipated expiration: 2030-08-11

Abstract

The utility model provides a colliery drilling depth stop device relates to the colliery field. This colliery drilling degree of depth stop device, including strikeing the brill, the output joint that strikes the brill has the drill bit, and the front end fixed surface who strikes the brill installs stop gear, and stop gear's inside sliding connection has the extension rod, and the front end fixed mounting of extension rod has touching mechanism, and stop collar fixed mounting is at the surface that strikes the brill, and the fixed surface of stop collar installs the flexure strip, and the both sides fixed mounting that the stop collar is located the flexure strip free end has the baffle, through connecting axle fixed connection between two baffles. This colliery bores degree of depth stop device looses the fixture block rotation elastic piece, and the extrusion piece lacks the constraint and can outwards pop out this moment, provides the space for the removal of moving the friction block, can change the extension length of touch panel through removing the extension rod, and then can reach the effect of restriction drilling depth, solves among the prior art problem that drilling process drilling depth can not restrict.

Description

Coal mine drilling depth limiting device

Technical Field

The utility model relates to a colliery technical field specifically is a colliery drilling depth stop device.

Background

Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are generally divided into underground coal mines and opencast coal mines. When the coal seam is far from the ground surface, a tunnel is usually dug to the underground, so that the coal is a mineworker coal mine. When the coal bed is very close to the earth surface, the earth surface soil layer is directly stripped to dig coal.

The hole is laid to the at first seting up the explosive when working face blasting in current colliery, and the degree of depth of current explosive mounting hole can not restrict usually, and this just leads to later stage explosive landfill can not target in place, so needs a device spacing to the degree of depth.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a colliery drilling depth stop device has solved the problem of proposing in the background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a coal mine drilling depth limiting device comprises a percussion drill, wherein a drill bit is clamped at the output end of the percussion drill, a limiting mechanism is fixedly arranged on the outer surface of the front end of the percussion drill, an extension rod is connected inside the limiting mechanism in a sliding manner, a touch mechanism is fixedly arranged at the front end of the extension rod, a limiting sleeve is fixedly arranged on the outer surface of the percussion drill, an elastic sheet is fixedly arranged on the outer surface of the limiting sleeve, two sides of the limiting sleeve, which are positioned at the free end of the elastic sheet, are fixedly provided with baffle plates, the two baffle plates are fixedly connected through a connecting shaft, the outer surface of the connecting shaft is sleeved with a clamping block, a fixed friction block is fixedly arranged inside the limiting sleeve, the fixed friction block is positioned outside the extension rod, a movable friction block is connected inside the limiting sleeve in a sliding manner, the movable friction block is positioned on one side of the extension rod, which is far away from the fixed friction block, the extrusion piece is close to stop collar shaft end fixed mounting and has compression spring, compression spring and stop collar fixed connection, and the outer end of extrusion piece runs through the stop collar and extends to the outside of stop collar, touching mechanism includes the shell, and shell fixed mounting is at the front end of extension rod, and the recess has been seted up to the front end of shell, and the inside fixed mounting of recess has buffer spring, and buffer spring's front end fixed mounting has touch panel, touch panel and shell sliding connection.

Preferably, the number of the extension rods is three, and a scale groove is formed in the outer side of one of the extension rods.

Preferably, the cross-sectional shapes of the fixed friction block and the movable friction block are both semi-annular, and the roughness of the surface, close to the extension rod, of the fixed friction block and the surface, close to the extension rod, of the movable friction block are higher than the surface roughness of the extension rod.

Preferably, the deformation amount of the buffer spring and the single front-rear impact length line of the impact drill can be the same, and the number of the buffer springs is six.

Preferably, the rear end fixed mounting of extension rod has the limiting plate, and the diameter of limiting plate is greater than the diameter of extension rod.

Preferably, the movable friction block is fixedly provided with a sliding block close to the axis end of the limiting sleeve, a sliding groove is formed in the limiting sleeve close to the axis end, and the sliding block is connected to the inside of the sliding groove in a sliding mode.

Advantageous effects

The utility model provides a colliery drilling depth stop device. The method has the following beneficial effects:

1. this colliery bores degree of depth stop device looses the fixture block rotation elastic piece, and the extrusion piece lacks the constraint and can outwards pop out this moment, provides the space for the removal of moving the friction block, can change the extension length of touch panel through removing the extension rod, and then can reach the effect of restriction drilling depth, solves among the prior art problem that drilling process drilling depth can not restrict.

2. This colliery drilling degree of depth stop device through set up the recess at the front end of shell and fixed mounting buffer spring in the recess, buffer spring's deflection and impact length line around the single that strikes the brill can be with, and buffer spring's quantity is six, can be used for buffering the trompil to strike the impact effect of boring through such setting up, has solved the problem that the degree of depth that the follow-up action that the transit hole degree of depth reached the back and bore leads to changes.

Drawings

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

fig. 2 is a schematic view of a touch mechanism of the present invention;

FIG. 3 is a schematic view of the limiting mechanism of the present invention;

fig. 4 is an internal cross-sectional view of the limiting mechanism of the present invention.

The drill bit comprises a percussion drill-1, a drill bit-2, a limiting mechanism-3, an extension rod-4, a touch mechanism-5, a limiting sleeve-301, an elastic sheet-302, a baffle-303, a connecting shaft-304, a clamping block-305, a fixed friction block-306, a movable friction block-307, a sliding block-308, a sliding groove-309, an extrusion block-310, a compression spring-311, a shell-501, a groove-502, a buffer spring-503, a touch plate-504, a scale groove-401 and a limiting plate-402.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a colliery drilling depth stop device:

embodiment one, as shown in fig. 1 to 4, includes a percussion drill 1, a drill bit 2 is clamped at an output end of the percussion drill 1, a limiting mechanism 3 is fixedly installed on an outer surface of a front end of the percussion drill 1, an extension rod 4 is slidably connected inside the limiting mechanism 3, a limiting plate 402 is fixedly installed at a rear end of the extension rod 4, a diameter of the limiting plate 402 is larger than that of the extension rod 4, the limiting plate 402 arranged at the rear end of the extension rod 4 can play a limiting role, a touch mechanism 5 is fixedly installed at the front end of the extension rod 4, the number of the extension rods 4 is three, a scale groove 401 is formed in an outer side of one of the extension rods 4, the adjustment can be accurately performed by arranging the scale groove 401, a limiting sleeve 301 is fixedly installed on an outer surface of the percussion drill 1, an elastic sheet 302 is fixedly installed on an outer surface of the limiting sleeve 301, one end of, the two sides of the limiting sleeve 301, which are positioned at the free end of the elastic sheet 302, are fixedly provided with the baffle plates 303, the two baffle plates 303 are fixedly connected through the connecting shaft 304, the outer surface of the connecting shaft 304 is sleeved with the fixture block 305, the elastic sheet 302 is tightly attached to the limiting sleeve 301 when the fixture block 305 is clamped, the inside of the limiting sleeve 301 is fixedly provided with the fixed friction block 306, the fixed friction block 306 is positioned at the outer side of the extension rod 4, the inside of the limiting sleeve 301 is slidably connected with the movable friction block 307, the cross-sectional shapes of the fixed friction block 306 and the movable friction block 307 are semi-annular, the roughness of the surface of the fixed friction block 306 and the surface of the movable friction block 307, which are close to the extension rod 4, is higher than that of the extension rod 4, the friction force can be improved by setting high roughness, the shock resistance of the device is improved, the movable friction block 307 is positioned at the side of, the inner part of the limit sleeve 301 close to the axial line end is provided with a sliding groove 309, the sliding block 308 is connected inside the sliding groove 309 in a sliding manner, the limit of the movable friction block 307 can be guaranteed through the arrangement, the inner part of the limit sleeve 301 is connected with an extrusion block 310 in a sliding manner, the extrusion block 310 is positioned at one end of the movable friction block 307 far away from the extension rod 4, the end, close to the axial line end of the limit sleeve 301, of the extrusion block 310 is fixedly provided with a compression spring 311, the compression spring 311 is fixedly connected with the limit sleeve 301, the outer end of the extrusion block 310 penetrates through the limit sleeve 301 and extends to the outer side of the limit sleeve 301, the touch mechanism 5 comprises a shell 501, the shell 501 is fixedly arranged at the front end of the extension rod 4, the front end of the shell 501 is provided with a groove 502, a buffer spring 503 is fixedly arranged inside the groove 502, the deformation amount of the buffer spring, with such an arrangement, the impact effect of the drill can be buffered, the front end of the buffer spring 503 is fixedly attached to the touch plate 504, and the touch plate 504 is slidably connected to the housing 501.

When the drilling tool is used, the clamping block 305 is rotated to loosen the elastic piece 302, the extrusion block 310 can be ejected outwards due to lack of constraint, a space is provided for moving the friction block 307, the extending length of the touch plate 504 can be changed by moving the extension rod 4, the effect of limiting the drilling depth can be achieved, the groove 502 is formed in the front end of the shell 501, the buffer spring is fixedly mounted in the groove 502, the deformation amount of the buffer spring 503 can be the same as the single front-rear impact length line of the impact drill 1, the number of the buffer spring 503 is six, and the impact effect of the open-hole impact drill can be buffered by the arrangement.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a colliery drilling depth stop device, bores (1) including the impact, its characterized in that: the drill bit (2) is clamped at the output end of the impact drill (1), a limiting mechanism (3) is fixedly arranged on the outer surface of the front end of the impact drill (1), an extension rod (4) is connected to the inside of the limiting mechanism (3) in a sliding mode, and a touch mechanism (5) is fixedly arranged at the front end of the extension rod (4);

the limiting mechanism (3) comprises a limiting sleeve (301), the limiting sleeve (301) is fixedly installed on the outer surface of the impact drill (1), an elastic sheet (302) is fixedly installed on the outer surface of the limiting sleeve (301), two sides, located at the free end of the elastic sheet (302), of the limiting sleeve (301) are fixedly installed with baffles (303), the two baffles (303) are fixedly connected through a connecting shaft (304), and a clamping block (305) is sleeved on the outer surface of the connecting shaft (304);

the inner part of the limiting sleeve (301) is fixedly provided with a fixed friction block (306), the fixed friction block (306) is located on the outer side of the extension rod (4), the inner part of the limiting sleeve (301) is connected with a movable friction block (307) in a sliding mode, the movable friction block (307) is located on one side, far away from the fixed friction block (306), of the extension rod (4), the inner part of the limiting sleeve (301) is connected with a pressing block (310) in a sliding mode, the pressing block (310) is located at one end, far away from the extension rod (4), of the movable friction block (307), a compression spring (311) is fixedly installed on the axis end, close to the limiting sleeve (301), of the pressing block (310), the compression spring (311) is fixedly connected with the limiting sleeve (301), and the outer end of the pressing block (310) penetrates through the limiting sleeve (301) and extends to the;

the touch mechanism (5) comprises a shell (501), the shell (501) is fixedly installed at the front end of the extension rod (4), a groove (502) is formed in the front end of the shell (501), a buffer spring (503) is fixedly installed inside the groove (502), a touch plate (504) is fixedly installed at the front end of the buffer spring (503), and the touch plate (504) is connected with the shell (501) in a sliding mode.

2. The coal mine drilling depth limiting device according to claim 1, wherein: the number of the extension rods (4) is three, and a scale groove (401) is formed in the outer side of one extension rod (4).

3. The coal mine drilling depth limiting device according to claim 1, wherein: the cross section shapes of the fixed friction block (306) and the movable friction block (307) are semi-annular, and the roughness of the surface, close to the extension rod (4), of the fixed friction block (306) and the movable friction block (307) is higher than the surface roughness of the extension rod (4).

4. The coal mine drilling depth limiting device according to claim 1, wherein: the deformation amount of the buffer springs (503) can be the same as the length line of single front and back impact of the impact drill (1), and the number of the buffer springs (503) is six.

5. The coal mine drilling depth limiting device according to claim 1, wherein: the rear end fixed mounting of extension rod (4) has limiting plate (402), and the diameter of limiting plate (402) is greater than the diameter of extension rod (4).

6. The coal mine drilling depth limiting device according to claim 1, wherein: the movable friction block (307) is fixedly provided with a sliding block (308) close to the axis end of the limiting sleeve (301), a sliding groove (309) is formed in the limiting sleeve (301) close to the axis end, and the sliding block (308) is connected to the inside of the sliding groove (309) in a sliding mode.