阅读说明：本技术 一种地质探矿钻探钻头 (Geological prospecting drill bit ) 是由 王金喜 郝惠迪 付志恒 孔德帅 崔小伟 于维满 陈宇 石志祥 孟志强 于 2020-04-08 设计创作，主要内容包括：本发明涉及地质探测领域,尤其涉及一种地质探矿钻探钻头,包括中空钻头、与钻头通过第一密封机构连接的中空壳体、设置在壳体内部用于驱动钻头转动的中空主轴、设置在主轴一端的第二密封机构、与第二密封机构固定连接的连杆、固定在壳体底部的支架、与支架固定的液压锤、用于驱动主轴转动的电机及使主轴沿轴向归位的第一弹簧；主轴与钻头通过卡接机构连接；第二密封机构连通有回液管,壳体连通有进液管；第一弹簧套接在主轴外侧,第一弹簧位于第二密封机构与壳体顶部的中间。本发明提供一种散热好、更换钻头方便的钻头。(The invention relates to the field of geological detection, in particular to a geological prospecting drilling bit, which comprises a hollow bit, a hollow shell, a hollow main shaft, a second sealing mechanism, a connecting rod, a support, a hydraulic hammer, a motor and a first spring, wherein the hollow shell is connected with the bit through a first sealing mechanism; the main shaft is connected with the drill bit through a clamping mechanism; the second sealing mechanism is communicated with a liquid return pipe, and the shell is communicated with a liquid inlet pipe; the first spring is sleeved outside the main shaft and is positioned between the second sealing mechanism and the top of the shell. The drill bit provided by the invention has the advantages of good heat dissipation and convenience in drill bit replacement.)

1. A geological exploration drilling bit characterized by: the drilling machine comprises a hollow drill bit (1), a hollow shell (2) connected with the drill bit (1) through a first sealing mechanism (13), a hollow main shaft (4) arranged in the shell (2) and used for driving the drill bit (1) to rotate, a second sealing mechanism (14) arranged at one end of the main shaft (4), a connecting rod (9) fixedly connected with the second sealing mechanism (14), a support (11) fixed at the bottom of the shell (2), a hydraulic hammer (12) fixedly connected with the support (11), a motor (7) used for driving the main shaft (4) to rotate, and a first spring (3) enabling the main shaft (4) to return to the position along the axial direction;

the main shaft (4) is connected with the drill bit (1) through a clamping mechanism (15);

the second sealing mechanism (14) is communicated with a liquid return pipe (8), and the shell (2) is communicated with a liquid inlet pipe (10);

the first spring (3) is sleeved on the outer side of the main shaft (4), and the first spring (3) is located between the second sealing mechanism (14) and the top of the shell (2).

2. A geological prospecting drilling probe according to claim 1, characterized in that the first sealing mechanism (13) comprises a first sealing ring (1302) with a semicircular cross section and a first T-shaped elastic ring (1301) sleeved outside the first sealing ring (1302), the first T-shaped elastic ring (1301) is pressed by the drill bit (1), one side of the first T-shaped elastic ring (1301) is in contact connection with the casing (2) through a chamfer, and the first sealing ring (1302) is in contact connection with the drill bit (1).

3. A geological prospecting drilling probe according to claim 1, characterized in that the second sealing means (14) comprises a second sealing ring (1404) with a semicircular cross section, a second T-shaped spring ring (1403) sleeved outside the second sealing ring (1404) and a fixing seat (1401) for fixing the second T-shaped spring ring (1403), the second T-shaped spring ring (1403) is fixed on the fixing seat (1401) by a collar (1402); the fixing seat (1401) is of a concave structure, a channel (1406) communicated with the liquid return pipe (8) is arranged at the bottom of the fixing seat (1401), a bearing (1405) for fixing the main shaft (4) is arranged at the upper end of the fixing seat (1401), the fixing seat (1401) and the inside of the shell (2) are in sliding fit along the axial direction of the main shaft (4) through a sliding groove, and the bottom of the fixing seat (1401) is fixedly connected with the connecting rod (9).

4. The geological prospecting drilling probe according to claim 1, characterized in that the clamping mechanism (15) comprises an L-shaped clamping hook (1502) symmetrically arranged on the shaft of the drill bit (1), an inverted cone-shaped convex corner (1503) arranged on the side wall of the main shaft (4) and matched with the clamping hook (1502), a stop pin (1505) used for limiting the reset of the clamping hook (1502) and a third sealing ring (1501) sleeved outside the main shaft (4), wherein the clamping hook (1504) is hinged with the shaft of the drill bit (1) through a rotating pin (1504), the stop pin (1505) is connected with the shaft of the drill bit (1) through a second spring (1506), and the stop pin (1505) is arranged inside the rotating pin (1502) and is positioned below the rotating pin (1504).

5. A geoprospecting drilling probe according to claim 1, characterized in that a key slot (401) is provided in the top side wall of the main shaft (4), the shaft part of the drill bit (1) is keyed to the main shaft (4), and the key length of the shaft part of the drill bit (1) is smaller than the length of the key slot (401).

6. A geoprospecting drilling probe according to claim 1, characterized in that the drill bit (1) comprises an outer layer (101) and an inner layer (103), the outer layer (101) and the inner layer (103) being fixedly connected by means of reinforcing ribs (102).

7. A geoprospecting drilling probe according to claim 1, characterized in that the housing (2) comprises an outer shell (201) and an inner shell (203), which outer shell (201) and inner shell (203) together form a liquid channel (202).

8. A geological prospecting drilling probe according to claim 1, characterized in that a driving gear (6) is arranged on the output shaft of the motor (7), a driven gear (5) which is engaged with the driving gear (6) is fixed on the outer side of the main shaft (4), and a plane bearing (501) is arranged between the driven gear (5) and the first spring (3).

Technical Field

The invention relates to the field of geological exploration, in particular to a geological prospecting drill bit.

Background

Geological exploration is investigation and research activities of surveying and detecting geology through various means and methods, determining a proper bearing stratum, determining a foundation type according to the foundation bearing capacity of the bearing stratum and calculating foundation parameters. The method is to find an industrially significant mineral deposit in mineral census, provide mineral reserves and geological data required by mine construction design for finding out the quality and quantity of the mineral and technical conditions of mining and utilization, and carry out investigation and research work on geological conditions such as rocks, strata, structures, mineral products, hydrology, landforms and the like in a certain area.

Hard and compact rock strata are inevitably encountered in the geological detection process, which causes great troubles to the actual detection and exploitation operation. Ordinary drill bits are difficult to drill in high density and high hardness formations due to mechanical strength, and drill bits rotating at high speed are prone to deformation, dislocation and even damage due to untimely heat dissipation, thereby terminating geological exploration and mineral exploitation processes. And replacement of damaged drill bits is also cumbersome.

Disclosure of Invention

The invention aims to provide a geological prospecting drilling bit, which solves the problems and is good in heat dissipation and convenient to replace.

In order to achieve the purpose, the invention provides the following scheme:

a geological prospecting drill bit comprises a hollow drill bit, a hollow shell connected with the drill bit through a first sealing mechanism, a hollow main shaft arranged in the shell and used for driving the drill bit to rotate, a second sealing mechanism arranged at one end of the main shaft, a connecting rod fixedly connected with the second sealing mechanism, a support fixed at the bottom of the shell, a hydraulic hammer fixedly connected with the support, a motor used for driving the main shaft to rotate and a first spring enabling the main shaft to return axially;

the main shaft is connected with the drill bit through a clamping mechanism;

the second sealing mechanism is communicated with a liquid return pipe, and the shell is communicated with a liquid inlet pipe;

the first spring is sleeved on the outer side of the main shaft and is positioned between the second sealing mechanism and the top of the shell.

Preferably, the first sealing mechanism comprises a first sealing ring with a semicircular cross section and a T-shaped elastic ring sleeved on the outer side of the first sealing ring, the T-shaped elastic ring is pressed by the drill bit, one side of the T-shaped elastic ring is in contact connection with the shell through a chamfer, and the first sealing ring is in contact connection with the drill bit.

Preferably, the second sealing mechanism comprises a second sealing ring with a semicircular cross section, a T-shaped elastic ring sleeved outside the second sealing ring, and a fixed seat for fixing the T-shaped elastic ring, and the second T-shaped elastic ring is fixed on the fixed seat through a clamping ring; the fixing base is "concave" style of calligraphy structure, the fixing base bottom set up with the passageway of liquid return pipe intercommunication, the fixing base upper end is provided with fixedly the bearing of main shaft, the fixing base with the casing is inside to be followed through the spout main shaft axial sliding fit, the fixing base bottom with connecting rod fixed connection.

Preferably, the clamping mechanism comprises L-shaped clamping hooks symmetrically arranged on the shaft part of the drill bit, inverted-cone-shaped convex angles arranged on the side wall of the main shaft and matched with the clamping hooks, a stop pin used for limiting the return of the clamping hooks and a third sealing ring sleeved on the outer side of the main shaft, the clamping hooks are hinged with the shaft part of the drill bit through rotating pins, the stop pin is connected with the shaft part of the drill bit through a second spring, and the stop pin is arranged on the inner side of the rotating pins and located on the lower part of the rotating pins.

Preferably, the side wall of the top of the spindle is provided with a key groove, the shaft part of the drill bit is in key connection with the spindle, and the key length of the shaft part of the drill bit is smaller than that of the key groove.

Preferably, the drill bit comprises an outer layer and an inner layer, and the outer layer and the inner layer are fixedly connected through reinforcing ribs.

Preferably, the housing comprises an outer shell and an inner shell, the outer shell and the inner shell together forming a liquid channel.

Preferably, a driving gear is arranged on an output shaft of the motor, a driven gear meshed with the driving gear is fixed on the outer side of the main shaft, and a plane bearing is arranged between the driven gear and the first spring.

The invention has the following technical effects:

according to the invention, the drill bit and the shell are arranged into a double-layer structure to form the internal channel, and the cooling liquid is directly circulated in the internal channel, so that the cooling effect in the working process of the drill bit is realized, and the structural damage caused by poor heat dissipation of the drill bit is fundamentally avoided; the liquid inlet pipe is connected with the water pump, liquid enters from the liquid inlet pipe, sequentially flows through the liquid channel, the cavity of the drill bit and the cavity of the main shaft, and then flows out through the liquid return pipe, so that the drill bit is cooled. The circulation of the cooling liquid communicated inside is easy to cause a liquid seepage phenomenon, which puts higher requirements on the sealing inside the drill bit.

In order to overcome the problem that a common drill bit is inconvenient to replace, the main shaft and the drill bit are connected through a clamping mechanism, the clamping hook is hinged with the shaft part of the drill bit through a rotating pin, the stop pin is connected with the shaft part of the drill bit through a second spring, and the stop pin is arranged on the inner side of the rotating pin and located at the lower part of the rotating pin.

When needing to be changed the drill bit, drive the main shaft upward movement through promoting the connecting rod, the ascending lobe of main shaft promotes the trip and opens to both sides, open to certain angle back when the trip, the stop pin removes to the trip direction under the effect of second spring and makes the trip fix the state of opening, can take off the drill bit this moment, during the installation drill bit, extract the stop pin, because of the trip is in the closure state under the coil spring effect, directly press the drill bit to the main shaft direction and can realize being connected of drill bit and main shaft, realize quick replacement drill bit. The main shaft resets under the effect of first spring, drives the drill bit and makes the drill bit compress tightly first sealing washer all the time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

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

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged view of a portion B of FIG. 1;

FIG. 4 is an enlarged view of a portion C of FIG. 1;

fig. 5 is a left side view of the clamping mechanism.

The drilling tool comprises a drill bit 1, an outer layer 101, a reinforcing rib 102, an inner layer 103, a shell 2, an outer shell 201, a liquid channel 202, an inner shell 203, a first spring 3, a main shaft 4, a driven gear 5, a planar bearing 501, a driving gear 6, a motor 7, a liquid return pipe 8, a connecting rod 9, a liquid inlet pipe 10, a bracket 11, a hydraulic hammer 12, a first sealing mechanism 13, a first T-shaped elastic ring 1301, a first sealing ring 1302, a second sealing mechanism 14, a fixed seat 1504, a collar 1402, a second T-shaped elastic ring 1403, a second sealing ring 1404, a bearing 1405, a channel 1406, a clamping mechanism 15, a third sealing ring 1501, a snap hook 1502, a convex angle 1401, a rotating pin 1503, a stopping pin 1505 and a second spring 1506.

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.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-5, the invention provides a geological prospecting drill bit, which comprises a hollow drill bit 1, a hollow shell 2 connected with the drill bit 1 through a first sealing mechanism 13, a hollow spindle 4 arranged in the shell 2 and used for driving the drill bit 1 to rotate, a second sealing mechanism 14 arranged at one end of the spindle 4, a connecting rod 9 fixedly connected with the second sealing mechanism 14, a bracket 11 fixed at the bottom of the shell 2, a hydraulic hammer 12 fixedly connected with the bracket 11, a motor 7 used for driving the spindle 4 to rotate and a first spring 3 used for enabling the spindle 4 to return to the position along the axial direction;

the main shaft 4 is connected with the drill bit 1 through a clamping mechanism 15;

the second sealing mechanism 14 is communicated with a liquid return pipe 8, and the shell 2 is communicated with a liquid inlet pipe 10;

the first spring 3 is sleeved outside the main shaft 4, and the first spring 3 is positioned between the second sealing mechanism 14 and the top of the shell 2. Through drill bit 1, casing 2 and main shaft 4 set up to hollow structure, carry out sealing connection through first sealing mechanism 14 between drill bit 1 and the casing 2, connect through second sealing mechanism 14 at main shaft 4, can make drill bit 1, form liquid circuit between casing 2 and the main shaft 4, the realization is to the cooling of drill bit 1 and casing 2, connect 15 through clamping mechanism between drill bit 1 and the main shaft 4, when needing to change drill bit 1, can realize the change of drill bit 1 through clamping structure, connect through hydraulic hammer 12 and casing 1 and can exert vertical direction's power for the drill bit at the probing rock in-process.

Further optimize the scheme, first sealing mechanism 13 constructs including the first sealing washer 1302 of cross section for semi-circular, cup joints the first T type bullet circle 1301 in first sealing washer 1302 outside, and first T type bullet circle 1301 compresses tightly through drill bit 1, and first T type bullet circle 1301 one side is connected through chamfer contact with casing 2, and first sealing washer 1302 is connected with drill bit 1 contact. After the drill bit 1 is connected with the main shaft 4, the drill bit 1 presses the first T-shaped elastic ring 1301, so that the first T-shaped elastic ring 1301 presses the semicircular first sealing ring 1302 to realize a sealing function.

In a further optimized scheme, the second sealing mechanism 14 comprises a second sealing ring 1404 with a semicircular cross section, a second T-shaped elastic ring 1403 sleeved outside the second sealing ring 1404 and a fixing seat 1401 for fixing the second T-shaped elastic ring 1403, and the second T-shaped elastic ring 1403 is fixed on the fixing seat 1401 through a collar 1402; the fixing seat 1401 is of a concave structure, the bottom of the fixing seat 1401 is provided with a channel 1406 communicated with the liquid return pipe 8, the upper end of the fixing seat 1401 is provided with a bearing 1405 for fixing the main shaft 4, the fixing seat 1401 is in sliding fit with the inside of the shell 2 along the axial direction of the main shaft 4 through a sliding groove, and the bottom of the fixing seat 1401 is fixedly connected with the connecting rod 9. The connecting rod 9 pushes the fixed seat 1401 to move, so as to drive the main shaft 4 to move along the axial direction.

In a further optimized scheme, the clamping mechanism 15 comprises an L-shaped clamping hook 1502 symmetrically arranged on the shaft portion of the drill bit 1, an inverted cone-shaped convex corner 1503 arranged on the side wall of the main shaft 4 and matched with the clamping hook 1502, a stop pin 1505 used for limiting the return of the clamping hook 1502 and a third sealing ring 1501 sleeved outside the main shaft 4, wherein the clamping hook 1502 is hinged to the shaft portion of the drill bit 1 through a rotating pin 1504, the stop pin 1505 is connected with the shaft portion of the drill bit 1 through a second spring 1506, the stop pin 1505 is arranged inside the rotating pin 1504 and located at the lower portion of the rotating pin 1504, a coil spring enabling the clamping hook 1502 to return is sleeved outside the stop pin 1505, the main shaft 4 is driven to move upwards through a pushing connecting rod 9, the convex corner 1503 on the main shaft 4 pushes the clamping hook 1502 to be opened towards two sides, after the clamping hook 1502 is opened to a certain angle, the stop pin 1505 moves towards the direction of the clamping hook 1502 under the action of the second spring 1506 to enable the clamping hook to be fixed in an opened state, at the moment, the drill bit 1 can be taken down, and the drill bit 1 can be pulled out when the drill bit 1.

According to a further optimized scheme, the side wall of the top of the main shaft 4 is provided with a key groove 401, the shaft part of the drill bit 1 is in key connection with the main shaft 4, and the key length of the shaft part of the drill bit 1 is smaller than that of the key groove 401. .

In a further optimized scheme, the drill bit 1 comprises an outer layer 101 and an inner layer 103, and the outer layer 101 and the inner layer 103 are fixedly connected through reinforcing ribs 102.

In a further preferred embodiment, the housing 2 comprises an outer shell 201 and an inner shell 203, the outer shell 201 and the inner shell 203 together forming the liquid channel 202.

In a further optimized scheme, a driving gear 6 is arranged on an output shaft of the motor 7, a driven gear 5 meshed with the driving gear 6 is fixed on the outer side of the main shaft 4, and a plane bearing 501 is arranged between the driven gear 5 and the first spring 3. The plane bearing 501 can reduce the friction force between the moving gear 5 and the first spring 3 during the rotation of the main shaft 4.

The working process of the embodiment is as follows:

connect feed liquor pipe 10 with the water pump, liquid gets into from feed liquor pipe 10, flows through liquid channel 202, the cavity of drill bit 1, the cavity of main shaft 4 in proper order, and the rethread returns the outflow of liquid pipe 8, realizes the cooling to drill bit 1.

When the drill bit 1 needs to be replaced, the main shaft 4 is driven to move upwards by pushing the connecting rod 9, the convex angle 1503 on the main shaft 4 pushes the hook 1502 to be opened towards two sides, and after the hook 1502 is opened to a certain angle, the stop pin 1505 moves towards the direction of the hook 1502 under the action of the second spring 1506, so that the hook 1502 is fixed in an opened state, and the drill bit 1 can be taken down at the moment.

When the drill bit 1 is installed, the stop pin 1505 is pulled out, the clamping hook 1502 is in a closed state under the action of the spiral spring, the drill bit 1 is directly pressed down towards the direction of the main shaft 4 to be connected with the main shaft 4, and the drill bit 1 is rapidly replaced. The main shaft 4 resets under the action of the first spring 3, and drives the drill bit 1 to enable the drill bit 1 to compress the first sealing ring all the time.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.