CN109469449B

CN109469449B - Drilling device convenient for coal mining with drill bit replaced

Info

Publication number: CN109469449B
Application number: CN201811180604.3A
Authority: CN
Inventors: 刘勇; 薛博; 杨帅
Original assignee: Guizhou University
Current assignee: Guizhou University
Priority date: 2018-10-10
Filing date: 2018-10-10
Publication date: 2020-09-15
Anticipated expiration: 2038-10-10
Also published as: CN109469449A

Abstract

The invention discloses a drilling device for coal mining, which is convenient for drill bit replacement and comprises a rack and a drill rod, wherein a first motor is installed at the top end of the rack, a lead screw and a slide rail rod which are vertically distributed are installed at the center of the rack, an adjusting block which is in sliding connection with the slide rail rod is installed on the lead screw in a threaded manner, the adjusting block is connected with a power box which is provided with a second motor, the top end of the drill rod is connected onto the power box, a screw auger-shaped soil rotating plate is installed on the surface of the drill rod, the bottom end of the drill rod penetrates through the center of a device cylinder, the device cylinder is connected with the rack through fixing rods at two sides, and the bottom end of the drill rod is fixed at the center of. This coal mining that conveniently carries out drill bit change adopts drilling equipment, through the redesign to current drill bit and drilling rod junction, enables the more convenient change after long-time use of drill bit to it is more stable to connect, can carry out real-time clearance to the earth of blocking on the drilling rod, and the design is more reasonable.

Description

Drilling device convenient for coal mining with drill bit replaced

Technical Field

The invention relates to the technical field of coal mining, in particular to a drilling device for coal mining, which is convenient for replacing a drill bit.

Background

The drilling device is indispensable equipment in the coal mining process, punching operation is carried out on a designated place through high-speed rotation and up-and-down movement of a drill rod and a drill bit, a auger-shaped soil rotating plate can be installed on the existing drill rod, soil can be clamped in gaps among plates of the soil rotating plate after the drill rod is lifted out of a drilled hole, but the existing drilling device has the defects that the drill bit and the drill rod are inconvenient to replace due to long-time use in actual operation and the design of the joint of the drill bit and the drill rod is inconvenient to replace; the clay clamped on the auger-shaped soil rotating plate can not be cleaned in real time. In order to solve the problems, innovative design is urgently needed on the basis of the original drilling device.

Disclosure of Invention

The invention aims to provide a drilling device for coal mining, which is convenient for replacing a drill bit, so as to solve the problem that the design of the joint of the drill bit and a drill rod is inconvenient for replacing the drill bit due to long-time use in the background technology; the soil clamped on the auger-shaped soil rotating plate can not be cleaned in real time.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a conveniently carry out drilling equipment that coal mining adopted that drill bit was changed, includes frame and drilling rod, first motor is installed on the top of frame, and the center department of frame installs lead screw and slide rail pole that vertical distribution to threaded mounting has the regulating block with slide rail pole sliding connection on the lead screw, and the regulating block is connected with the power box of having installed the second motor simultaneously, the top of drilling rod is connected on the power box, and the surface mounting of drilling rod has the soil turning plate of auger form to the center department that a device section of thick bamboo was passed to the bottom of drilling rod, and a device section of thick bamboo is connected through the dead lever and the frame of both sides simultaneously, the bottom mounting of drilling rod is in the center department of connecting plate, and the below of connecting plate is provided with the drill bit.

Preferably, the inner wall of the device cylinder is provided with an inclined rod, and the bottom end of the inclined rod is welded with a mud scraper.

Preferably, the height of the mud scraping plate is matched with the length of a gap between plates of the soil rotating plate, and the mud scraping plate and the inclined rod are symmetrically distributed about the central line of the device cylinder.

Preferably, the lower end face and the inner part of the connecting plate are respectively provided with a first hollow groove and a second hollow groove, the first hollow groove and the second hollow groove are connected with a special-shaped rod arranged on the upper surface of the drill, the top end parts of the first hollow groove and the special-shaped rod are matched, and the length of the top end parts of the second hollow groove and the special-shaped rod is matched.

Preferably, the preformed hole that all sets up on dysmorphism pole and the connecting plate with fixing bolt threaded connection, and the fixing bolt runs through the preformed hole on the connecting plate.

Compared with the prior art, the invention has the beneficial effects that: the drilling device is adopted in the coal mining which is convenient for replacing the drill bit, the drill bit can be more conveniently replaced after being used for a long time through redesigning the joint of the existing drill bit and the drill rod, the connection is more stable, the soil clamped on the drill rod can be cleaned in real time, and the design is more reasonable;

1. the inclined rod and the mud scraper are used, so that the rotation of the drill rod is convenient to clean soil between the soil rotating plates on the drill rod in real time, and the subsequent drilling operation is convenient to carry out;

2. the design of dysmorphism pole and relevant dead slot, the use of cooperation conventional bolt and screw can carry out more convenient installation and dismantlement to the drill bit.

Drawings

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

FIG. 2 is a front view of the frame of the present invention;

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

FIG. 4 is an enlarged cross-sectional view taken at A in FIG. 3 according to the present invention;

FIG. 5 is an enlarged cross-sectional view taken at B in FIG. 1 according to the present invention.

In the figure: 1. a frame; 2. a first motor; 3. a screw rod; 4. an adjusting block; 5. a power cartridge; 6. a second motor; 7. a drill stem; 8. a soil rotating plate; 9. a device cartridge; 91. a diagonal bar; 92. a mud scraper; 10. fixing the rod; 11. a connecting plate; 111. a first empty slot; 112. a second empty slot; 113. a profiled bar; 114. reserving a hole; 115. fixing the bolt; 12. a drill bit; 13. a slide rail rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a drilling equipment is adopted in coal mining that conveniently carries out drill bit change, including frame 1 and drilling rod 7, first motor 2 is installed on the top of frame 1, and the center department of frame 1 installs lead screw 3 and slide rail pole 13 of vertical distribution, and threaded mounting has the regulating block 4 with slide rail pole 13 sliding connection on the lead screw 3, regulating block 4 is connected with the power box 5 of having installed second motor 6 simultaneously, the top of drilling rod 7 is connected on power box 5, and the surface mounting of drilling rod 7 has the native board 8 of revolving of auger form, and the center department of a device section of thick bamboo 9 is passed to the bottom of drilling rod 7, a device section of thick bamboo 9 is connected through dead lever 10 and frame 1 of both sides simultaneously, the bottom mounting of drilling rod 7 is in the center department of connecting plate 11, and the below of connecting plate 11 is provided with drill bit 12.

The down tube 91 is installed to the inner wall of device section of thick bamboo 9, and the bottom welding of down tube 91 has the mud scraper 92, the height of mud scraper 92 is identical with the interplate space department length of rotatory native board 8, and mud scraper 92 and down tube 91 all are about the central line symmetric distribution of device section of thick bamboo 9, after drilling finishes, drilling rod 7 can be taken out from drilling at the continuous pivoted in-process, consequently, the clearance between rotatory native board 8 can be continuous contacts with mud scraper 92, when mud scraper 92 contacts with the earth on the rotatory native board 8, can strike off the earth between the native board 8 clearance soon promptly, so that subsequent drilling operation goes on.

The lower end surface and the interior of the connecting plate 11 are respectively provided with a first empty groove 111 and a second empty groove 112, the first empty groove 111 and the second empty groove 112 are connected with a special-shaped rod 113 arranged on the upper surface of the drill bit 12, the top end parts of the first empty groove 111 and the special-shaped rod 113 are matched, the top end parts of the second empty groove 112 and the special-shaped rod 113 are matched, the special-shaped rod 113 and the connecting plate 11 are both provided with a reserved hole 114 in threaded connection with a fixing bolt 115, the fixing bolt 115 penetrates through the reserved hole 114 on the connecting plate 11, after long-time use, the fixing bolt 115 can be unscrewed from the connecting plate 11, the whole drill bit 12 is rotated in the direction from the second empty groove 112 to the first empty groove 111, the special-shaped rod 113 on the drill bit 12 is completely positioned in the first empty groove 111, the whole drill bit 12 can be taken out downwards, thereby completing the disassembly of the drill bit 12, if a new drill bit 12 with a special-shaped rod 113 is required, and (5) reversely operating the steps.

The working principle is as follows: the operation of the second motor 6 can drive the drill rod 7 and the drill bit 12 to rotate at a high speed, the operation of the first motor 2 can drive the screw rod 3 to rotate in the rack 1 through a gear and a chain, the adjusting block 4 drives the power box 5 and the drill rod 7 on the power box 5 to synchronously move downwards under the action of thread transmission, so that the drilling operation is performed on the ground, after the drilling is completed, the drill rod 7 can be drawn out from the drilling hole in the continuous rotating process, so that the gap between the soil rotating plates 8 can be continuously contacted with the mud scraping plate 92, and when the mud scraping plate 92 is contacted with the soil on the soil rotating plates 8, the soil between the gaps of the soil rotating plates 8 can be scraped, so that the subsequent drilling operation can be performed conveniently;

after a long time use, the fixing bolt 115 can be unscrewed from the connecting plate 11, and the whole drill bit 12 is rotated in the direction from the second empty groove 112 to the first empty groove 111, so that the special-shaped rod 113 on the drill bit 12 is completely positioned in the first empty groove 111, and the whole drill bit 12 can be moved downwards and taken out, thereby completing the disassembly of the drill bit 12, and if a new drill bit 12 with the special-shaped rod 113 needs to be installed, the above steps can be performed in reverse.

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 drilling equipment is adopted in coal mining that conveniently carries out drill bit and change, includes frame (1) and drilling rod (7), its characterized in that: the top end of the rack (1) is provided with a first motor (2), the center of the rack (1) is provided with a lead screw (3) and a slide rail rod (13) which are vertically distributed, the lead screw (3) is provided with an adjusting block (4) which is in sliding connection with the slide rail rod (13) in a threaded manner, the adjusting block (4) is connected with a power box (5) provided with a second motor (6), the top end of the drill rod (7) is connected with the power box (5), the surface of the drill rod (7) is provided with a spiral-auger-shaped soil rotating plate (8), the bottom end of the drill rod (7) penetrates through the center of the device cylinder (9), the device cylinder (9) is connected with the rack (1) through fixing rods (10) at two sides, the bottom end of the drill rod (7) is fixed at the center of the connecting plate (11), a drill bit (12) is arranged below the connecting plate (11), and a first empty groove (111) and a second empty groove (112) are respectively arranged on the lower end surface and inside of the connecting plate, the first hollow groove (111) and the second hollow groove (112) are connected with a special-shaped rod (113) arranged on the upper surface of the drill bit (12), the top end parts of the first hollow groove (111) and the special-shaped rod (113) are matched, and the length of the top end parts of the second hollow groove (112) and the special-shaped rod (113) is matched.

2. The coal mining drilling device facilitating bit replacement according to claim 1, wherein: the inner wall of the device barrel (9) is provided with an inclined rod (91), and the bottom end of the inclined rod (91) is welded with a mud scraper (92).

3. The coal mining drilling device facilitating bit replacement according to claim 2, wherein: the height of the mud scraping plate (92) is matched with the length of a gap between the plates of the soil rotating plate (8), and the mud scraping plate (92) and the inclined rod (91) are symmetrically distributed about the central line of the device cylinder (9).

4. The coal mining drilling device facilitating bit replacement according to claim 1, wherein: the special-shaped rod (113) and the connecting plate (11) are both provided with a preformed hole (114) in threaded connection with a fixing bolt (115), and the fixing bolt (115) penetrates through the preformed hole (114) in the connecting plate (11).