阅读说明：本技术 一种具有有效耐磨效果的采煤用钻探杆 (Coal mining drilling rod with effective wear-resisting effect ) 是由 王万琴 于 2021-08-30 设计创作，主要内容包括：本发明涉及煤矿开采领域。尤其涉及一种具有有效耐磨效果的采煤用钻探杆。本发明要解决的技术问题是现有部分采煤钻探杆钻进过程中钻头磨损后会影响钻杆叶片的使用寿命,现有部分钻杆长度较长时冷却水效果会降低,现有部分钻杆难以有效降低钻头的磨损率。为了解决上述技术的问题,本发明提供了一种具有有效耐磨效果的采煤用钻探杆,包括钻套,所述钻套内壁的上部活动连接有支撑套,所述支撑套的一侧固定连接有与钻套相配合的水管。本发明由引水机构和钻进机构组成,通过转杆带动转套旋转,使与转套表面弧形槽上活动连接的连接杆带动切屑块进行上下移动,接着切屑块侧壁与相邻的磨石之间产生摩擦对切屑块进行打磨,提升开采效率。(The invention relates to the field of coal mining. In particular to a coal mining drilling rod with effective wear-resistant effect. The invention aims to solve the technical problems that the service life of a blade of a drill rod is influenced after a drill bit is worn in the drilling process of a part of conventional coal mining drilling rods, the cooling water effect is reduced when the length of the conventional part of the drill rod is longer, and the wear rate of the drill bit is difficult to effectively reduce by the conventional part of the drill rod. In order to solve the technical problem, the invention provides a coal mining drill rod with an effective wear-resistant effect, which comprises a drill bushing, wherein the upper part of the inner wall of the drill bushing is movably connected with a support sleeve, and one side of the support sleeve is fixedly connected with a water pipe matched with the drill bushing. The rotary sleeve is driven to rotate by the rotating rod, so that the connecting rod movably connected with the arc-shaped groove on the surface of the rotary sleeve drives the cutting block to move up and down, and then friction is generated between the side wall of the cutting block and the adjacent grinding stone to polish the cutting block, thereby improving the mining efficiency.)

1. The utility model provides a coal mining is with boring bar with effective wear-resisting effect, includes drill bushing (1), its characterized in that: the upper part of the inner wall of the drill bushing (1) is movably connected with a support bushing (2), one side of the support bushing (2) is fixedly connected with a water pipe (3) matched with the drill bushing (1), the middle part of the support bushing (2) is fixedly connected with a motor (4), the rotating end of the motor (4) is fixedly connected with a rotating rod (5), the lower part of the rotating rod (5) is fixedly sleeved with a rotating bushing (6), and a water diversion mechanism (7) is movably connected between the two ends of the rotating bushing (6) and the drill bushing (1);

the lower part of the drill sleeve (1) is in threaded connection with a drill sleeve (8), and a drilling mechanism (9) is movably connected between the inside of the drill sleeve (8) and the side wall of the rotating sleeve (6); the drilling mechanism (9) comprises four cutting blocks (901), the four cutting blocks (901) are movably connected inside the drill sleeve (8) at equal intervals along the circumference, the top of each cutting block (901) is fixedly connected with a connecting rod (902), the inner wall of the lower portion of the drill sleeve (1) is provided with a sliding groove (903) matched with the connecting rod (902), one side, close to the rotating sleeve (6), of the upper portion of the connecting rod (902) is fixedly connected with a guide block (904), and the surface of the rotating sleeve (6) is provided with arc-shaped grooves (905) matched with the four guide blocks (904);

the interior of the drill sleeve (8) is movably connected with grindstones (906) matched with the cutting chips (901) at equal intervals along the circumference.

2. A coal mining drill rod with effective wear resistance according to claim 1, characterized in that: the water diversion mechanism (7) comprises a spiral groove (701), the spiral groove (701) is formed in the middle of the rotary sleeve (6), a first water diversion sleeve (702) matched with the top of the spiral groove (701) is fixedly connected to the top of the rotary sleeve (6), the side wall of the first water diversion sleeve (702) is movably connected to the inner wall of the drill sleeve (1), and a spiral blade (703) matched with the first water diversion sleeve (702) is fixedly connected to the surface of the rotary rod (5);

the bottom of the rotating sleeve (6) is fixedly connected with a second water guiding sleeve (704) matched with the bottom of the spiral groove (701), the bottom of the second water guiding sleeve (704) is movably connected with a spray head (705), and the middle of the spray head (705) is fixedly connected to the middle of the drill sleeve (8).

3. A coal mining drill rod with effective wear resistance according to claim 2, characterized in that: the water diversion sleeve (702) and the water diversion sleeve (704) are both conical, a rotary bearing is fixedly sleeved on the side wall of the water diversion sleeve (702), and the outer ring of the rotary bearing is fixedly connected with the inner wall of the drill bushing (1).

4. A coal mining drill rod with effective wear resistance according to claim 1, characterized in that: the cross section of the guide block (904) is circular, and the guide block (904) is connected to the inner part of the arc-shaped groove (905) in a sliding mode.

5. A coal mining drill rod with effective wear resistance according to claim 1, characterized in that: one side of the grinding stone (906) is fixedly connected with a compression spring, the inner wall of the drill sleeve (8) is provided with a clamping groove matched with the grinding stone (906), one end of the compression spring is fixedly connected to the inner wall of the clamping groove, and the other side of the grinding stone (906) is lapped on the side wall of the adjacent cutting block (901);

the bottom of the cutting block (901) is fixedly connected with an impact head, and a cutting edge is formed on the side wall of the cutting block (901).

6. A coal mining drill rod with effective wear resistance according to claim 1, characterized in that: four slots are formed in the top of the drill sleeve (8) at equal intervals along a circumferential axis, and the upper portions of the four connecting rods (902) are respectively penetrated and correspond to the slots and are connected to the adjacent inner portions of the sliding grooves (903) in a sliding mode.

7. A coal mining drill rod with effective wear resistance according to claim 1, characterized in that: the upper part of the rotating rod (5) is movably sleeved with a baffle ring matched with the water pipe (3), and the outer wall of the baffle ring is movably connected to the inner wall of the drill bushing (1).

Technical Field

The invention relates to the technical field of coal mining, in particular to a coal mining drill rod with an effective wear-resistant effect.

Background

China is a country with large coal yield and consumption, the demand of coal is continuously increased along with the increase of economy, and in many coal fields in the south of China, thin and ultra-thin coal seams are abundant, but the mining difficulty of the thin coal seam is increased and the mining process is not mature, so that the thin and ultra-thin coal seams are not mined with good results all the time, and the mining of a drilling coal mining machine is an effective means for mining the ultra-thin coal seam;

the prior patent (publication number: CN109854187A) discloses a auger stem for a coal mining machine, which comprises a stem barrel assembly and stem blades fixed on the periphery of the stem barrel assembly, wherein the stem barrel assembly comprises a stem barrel. The inventor finds that the following problems in the prior art are not solved in the process of realizing the scheme: 1. the existing part of drill rods are mainly mined by matching drill rod blades with drill bits in the drilling process, the drill bits are easy to cause large abrasion of the drill rod blades after being seriously abraded, and need to be replaced in time, so that the mining efficiency is reduced, and the mining cost is increased; 2. the existing part of drill rods cool the drill bit by introducing water into the drill rods, so that the surface temperature of the drill bit is reduced, the drill rods are generally long, and the water pressure is reduced when cooling water reaches the bottoms of the drill rods, so that the cooling effect on the drill bit is influenced; 3. the abrasion of the drill bit is the largest in the coal mining process, the coal mining efficiency is seriously influenced after the drill bit is abraded, and the abrasion rate of the drill bit is difficult to effectively reduce in the drilling process of the existing part of drill rods.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the coal mining drilling rod with the effective wear-resisting effect, which solves the problems that the service life of a blade of the drilling rod is influenced after a drill bit is worn in the drilling process of the existing part of coal mining drilling rods, the cooling water effect is reduced when the length of the existing part of coal mining drilling rods is longer, and the wear rate of the drill bit is difficult to effectively reduce by the existing part of coal mining drilling rods.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a coal mining drill rod with an effective wear-resistant effect comprises a drill bushing, wherein the upper part of the inner wall of the drill bushing is movably connected with a support sleeve, one side of the support sleeve is fixedly connected with a water pipe matched with the drill bushing, the middle part of the support sleeve is fixedly connected with a motor, the rotating end of the motor is fixedly connected with a rotating rod, the lower part of the rotating rod is fixedly sleeved with a rotating sleeve, and a water diversion mechanism is movably connected between the two ends of the rotating sleeve and the drill bushing;

the lower part of the drill sleeve is in threaded connection with a drill sleeve, and a drilling mechanism is movably connected between the interior of the drill sleeve and the side wall of the rotating sleeve; the drilling mechanism comprises four cutting blocks, the four cutting blocks are movably connected inside the drill sleeve at equal intervals along the circumference, the top of each cutting block is fixedly connected with a connecting rod, the inner wall of the lower part of the drill sleeve is provided with a sliding groove matched with the connecting rod, one side of the upper part of the connecting rod, close to the rotating sleeve, is fixedly connected with a guide block, and the surface of the rotating sleeve is provided with an arc-shaped groove matched with the four guide blocks;

the interior of the drill sleeve is movably connected with grindstones matched with the cutting blocks at equal intervals along the circumference.

Preferably, the diversion mechanism comprises a spiral groove, the spiral groove is formed in the middle of the rotary sleeve, a diversion sleeve matched with the top of the spiral groove is fixedly connected to the top of the rotary sleeve, the side wall of the diversion sleeve is movably connected to the inner wall of the drill sleeve, and a spiral blade matched with the diversion sleeve is fixedly connected to the surface of the rotary rod;

the bottom of the rotary sleeve is fixedly connected with a second water guiding sleeve matched with the bottom of the spiral groove, the bottom of the second water guiding sleeve is movably connected with a spray head, and the middle of the spray head is fixedly connected with the middle of the drill sleeve.

Preferably, the water diversion sleeve I and the water diversion sleeve II are both conical, a rotary bearing is fixedly sleeved on the side wall of the water diversion sleeve I, and the outer ring of the rotary bearing is fixedly connected with the inner wall of the drill bushing.

Further preferably, the cross section of the guide block is circular, and the guide block is slidably connected to the inside of the arc-shaped groove.

Preferably, one side of the grinding stone is fixedly connected with a compression spring, the inner wall of the drill sleeve is provided with a clamping groove matched with the grinding stone, one end of the compression spring is fixedly connected to the inner wall of the clamping groove, and the other side of the grinding stone is lapped on the side wall of the adjacent cutting block;

the bottom of the cutting block is fixedly connected with an impact head, and a cutting edge is formed in the side wall of the cutting block.

Further preferably, four slots are formed in the top of the drill bit sleeve at equal intervals along the circumferential axis, and the upper portions of the four connecting rods respectively penetrate through and correspond to the slots and are connected to the adjacent inner portions of the sliding grooves in a sliding mode.

Preferably, the upper part of the rotating rod is movably sleeved with a baffle ring matched with the water pipe, and the outer wall of the baffle ring is movably connected to the inner wall of the drill bushing.

(III) advantageous effects

The invention provides a coal mining drilling rod with effective wear-resisting effect, which has the following beneficial effects:

(1) the device uses through the cooperation of parts such as commentaries on classics cover, smear metal piece and grindstone, and it is rotatory to make the motor drive the bull stick, and the bull stick drives the commentaries on classics cover rotation this moment, makes and changes the connecting rod of swing joint on the cover surface arc wall and drive the smear metal piece and reciprocate, produces the friction between smear metal piece lateral wall and the adjacent grindstone and polishes the smear metal piece after that, promotes exploitation efficiency, reduces exploitation cost, and the practicality is strong.

(2) The device uses through the cooperation of parts such as commentaries on classics cover, helicla flute and diversion cover, and when making the motor drive bull stick rotatory, the inside water of drill bushing passes through the spiral leaf rotation and forms spiral transport after the helicla flute is inside, promotes the cooling water conveying effect of drill bushing bottom, and the effectual chip-removing piece surface is cooled down and is handled.

(3) The device uses through the cooperation of parts such as commentaries on classics cover, guide block and connecting rod, makes four smear metal pieces can realize that two liang of forms of replacement exploit, makes smear metal piece surface can effectually cool down, avoids being in for a long time and creeps into the state and make smear metal piece surface produce high temperature, causes the serious condition of smear metal piece wearing and tearing to take place, has reduced smear metal piece wear rate, promotes whole life.

Drawings

FIG. 1 is a front cross-sectional view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;

FIG. 3 is a front view of the swivel sleeve position of the present invention;

FIG. 4 is a top cross-sectional view of the position of the swivel sleeve of the present invention;

FIG. 5 is a bottom view of the bit holder location of the present invention.

In the figure: 1, drilling a sleeve; 2 supporting the sleeve; 3, a water pipe; 4, a motor; 5, rotating a rod; 6, rotating the sleeve; 7, a water diversion mechanism; 701, a spiral groove; 702 a water diversion sleeve; 703 helical leaves; 704 # II water diversion jacket; 705 a spray head; 8, a drill sleeve; 9 a drilling mechanism; 901 cutting chips; 902 connecting rods; 903 chute; 904 a guide block; 905 an arc-shaped groove; 906 a grindstone.

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 coal mining is with boring bar with effective wear-resisting effect, includes drill bushing 1, and the upper portion swing joint of drill bushing 1 inner wall has the support cover 2, supports one side fixedly connected with of cover 2 and drill bushing 1 matched with water pipe 3, supports the middle part fixedly connected with motor 4 of cover 2, and the rotation end fixedly connected with bull stick 5 of motor 4, the lower part of bull stick 5 is fixed to be cup jointed changes cover 6, swing joint has diversion mechanism 7 between the both ends of changeing cover 6 and the drill bushing 1. It should be noted that the outer wall of the drill sleeve 1 is provided with helical blades.

The lower part of the drill sleeve 1 is in threaded connection with a drill sleeve 8, and a drilling mechanism 9 is movably connected between the inside of the drill sleeve 8 and the side wall of the rotating sleeve 6; the drilling mechanism 9 comprises four cutting blocks 901, the four cutting blocks 901 are movably connected in the drill sleeve 8 along the circumference at equal intervals, the top of each cutting block 901 is fixedly connected with a connecting rod 902, the inner wall of the lower part of the drill sleeve 1 is provided with a sliding groove 903 matched with the connecting rod 902, the upper part of the connecting rod 902 is close to one side of the rotating sleeve 6 and is fixedly connected with a guide block 904, and the surface of the rotating sleeve 6 is provided with an arc-shaped groove 905 matched with the four guide blocks 904. It should be noted that the arc-shaped groove 905 is formed along the circumference of the surface of the rotating sleeve 6, and the arc-shaped groove 905 is located on the surface of the rotating sleeve 6 and is arranged in bilateral symmetry, so that the two opposite chip blocks 901 move synchronously through the matching of the connecting rod 902 and the guide block 904, and the four chip blocks 901 can be replaced in pairs for mining.

Grindstones 906 fitted with the chip pieces 901 are attached to the inside of the bit case 8 at equal intervals along the circumference. .

In the invention, the diversion mechanism 7 comprises a spiral groove 701, the spiral groove 701 is arranged in the middle of the rotary sleeve 6, the top of the rotary sleeve 6 is fixedly connected with a diversion sleeve 702I matched with the top of the spiral groove 701, the side wall of the diversion sleeve 702I is movably connected on the inner wall of the drill sleeve 1, and the surface of the rotary rod 5 is fixedly connected with a spiral blade 703 matched with the diversion sleeve 702I.

The bottom of the rotating sleeve 6 is fixedly connected with a second water diversion sleeve 704 matched with the bottom of the spiral groove 701, the bottom of the second water diversion sleeve 704 is movably connected with a spray head 705, and the middle of the spray head 705 is fixedly connected to the middle of the drill sleeve 8. It should be noted that the bottom of the second diversion sleeve 704 is fixedly connected with a bearing sleeve, and an inner ring at the bottom of the bearing sleeve is fixedly connected with the top of the spray head 705, so that the rotating rod 5 drives the rotating sleeve 6 and the second diversion sleeve 704 to rotate, and the spray head 705 is not driven to rotate.

In the invention, the first water diversion sleeve 702 and the second water diversion sleeve 704 are both designed to be conical, the side wall of the first water diversion sleeve 702 is fixedly sleeved with a rotating bearing, and the outer ring of the rotating bearing is fixedly connected with the inner wall of the drill bushing 1.

In the present invention, the cross section of the guide block 904 is circular, and the guide block 904 is slidably connected to the inside of the arc-shaped slot 905. It should be noted that, the guide block 904 is set to be cylindrical, so that friction between the guide block and the arc-shaped groove 905 in the transmission process can be reduced, and stability is improved.

In the invention, one side of the grinding stone 906 is fixedly connected with a compression spring, the inner wall of the drill sleeve 8 is provided with a clamping groove matched with the grinding stone 906, one end of the compression spring is fixedly connected on the inner wall of the clamping groove, and the other side of the grinding stone 906 is lapped on the side wall of the adjacent cutting block 901. It should be noted that the grindstone 906 can be always attached to the surface of the chip block 901 during movement by compressing the spring, and the grindstone 906 can be used in different mesh numbers as required.

The bottom of the cutting block 901 is fixedly connected with an impact head, and a cutting edge is arranged on the side wall of the cutting block 901.

In the invention, four slots are formed in the top of the drill sleeve 8 at equal intervals along the circumferential axis, and the upper parts of the four connecting rods 902 are respectively connected to the inner parts of the adjacent sliding grooves 903 in a sliding manner through the corresponding slots.

In the invention, the upper part of the rotating rod 5 is movably sleeved with a baffle ring matched with the water pipe 3, and the outer wall of the baffle ring is movably connected on the inner wall of the drill bushing 1. It should be noted that the bottom of the water pipe 3 penetrates through the middle of the baffle ring and extends into the drill bushing 1, and the inner ring and the outer ring of the baffle ring are respectively and fixedly connected with a connecting bearing matched with the surface of the rotating rod 5 and the inner wall of the drill bushing 1, so that the baffle ring cannot be driven to rotate in the rotating process of the drill bushing 1 and the rotating rod 5.

When the rotary drill sleeve is used, the motor 4 is started, the motor 4 drives the rotary rod 5 to rotate, the rotary rod 5 drives the rotary sleeve 6 to rotate at the moment, the guide block 904 movably connected in the arc-shaped groove 905 formed in the surface of the rotary sleeve 6 moves up and down along with the rotation of the rotary sleeve 6, the guide block 904 drives the fixedly connected connecting rod 902 to slide in the sliding groove 903, then the chip block 901 fixedly connected to the bottom of the connecting rod 902 moves up and down in the drill sleeve 8, friction is generated between the side wall of the chip block 901 and the adjacent grinding stone 906 to grind the chip block 901, the mining efficiency is improved, the mining cost is reduced, the practicability is high, meanwhile, when the motor 4 drives the rotary rod 5 to rotate, water is added into the water pipe 3, the water in the drill sleeve 1 rotates through the spiral blade and forms spiral conveying after passing through the interior of the spiral groove 701, the cooling water conveying effect at the bottom of the drill sleeve 1 is improved, and the cooling water is efficiently sprayed on the surface of the chip block 901 through the spray nozzle 705, carry out cooling treatment to smear metal piece 901 surface, it is relative better with ordinary water-cooling effect, arc 905 that the circumference was seted up is followed through changeing 6 surfaces of cover, thereby it carries out synchronous motion to make two relative smear metal pieces 901 to be connected with connecting rod 902 through guide block 904, make four smear metal pieces 901 can realize that two liang of alternate forms are exploited, because the exploitation of smear metal piece 901 intermittent type formula, make smear metal piece 901 surface can effectually cool down, avoid being in for a long time and creep into the state and make smear metal piece 901 surface produce the condition emergence that high temperature caused smear metal piece 901 wearing and tearing seriously, smear metal piece 901 wear rate has been reduced, promote whole life.