Joint cutting drilling machine for coal mine

Abstract

The utility model discloses a seam cutting drilling machine for a coal mine, which belongs to the technical field of coal mine drilling equipment and comprises a propelling block and a rotating cylinder inserted at the upper end of the propelling block, a chip removal pipe is inserted in the rotating cylinder, a fixed block is inserted at the upper end of the chip removal pipe, the lower end of the chip removal pipe extends to the lower side of the propelling block, and a water conveying pipe is inserted in the chip removal pipe. The water conveying pipe is connected with the spiral drill bit which is provided with a plurality of water outlet holes and a scrap suction opening. The chip suction opening communicates with the interior of the chip removal pipe, the water conveying pipe is used for conveying high-pressure water to a water outlet hole of the spiral drill bit, and the high-pressure water discharged from the water outlet hole is used for cooling the spiral drill bit and flushing chips out of a drill hole. The lower end of the chip removal pipe is connected with the transfer column through a connecting column, the transfer column is used for being connected with a high-pressure water pump and negative-pressure suction equipment, high-pressure water is conveyed to the water conveying pipe, chips in a drilled hole are sucked out through the chip suction opening and the chip removal pipe, and efficient operation, stable operation and convenient maintenance of the coal mine joint cutting drilling machine are achieved; the drilling efficiency and the equipment reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mine drilling equipment technical field, specifically speaking, it is a coal mine is with cutting seam drilling machine. BACKGROUND

[0002] In the process of coal mining, drilling is an important link of cutting seam and discharging gas. However, the traditional coal mine drilling equipment has many problems in the operation process, especially in deep hole drilling, the drill bit is easy to be damaged due to high temperature, and the debris in the drill hole is easy to accumulate, which causes the problems of drill pipe blockage, sticking and the like, seriously affecting the drilling efficiency and operation safety.

[0003] When the drill bit rotates at high speed to cut coal seam or rock stratum, a large amount of heat will be generated. If it cannot be cooled in time, the overheating problem of the drill bit will cause its wear and tear to be aggravated or even damaged, shorten the service life, increase the replacement cost, and may cause the operation to be interrupted. In addition, a large amount of coal and rock debris will be generated in the drilling process, and if these debris cannot be cleaned in time, they will accumulate in the drill hole, affecting the normal rotation of the drill bit, and even causing the equipment to be blocked and stuck, thereby affecting the continuity and stability of the entire drilling operation.

[0004] At the same time, most of the existing coal mine drilling equipment adopts independent cooling and debris removal system, and the device is complex and occupies a large space. Although some equipment integrates the cooling and debris removal functions, the cooling efficiency and debris removal effect are low, which is difficult to meet the high efficiency requirement of deep hole drilling. In addition, the connection mode of the existing equipment is relatively complex, the installation and disassembly process is relatively cumbersome, the maintenance cost is relatively high, and the equipment does not have the modular expansion capability, which is difficult to adapt to the requirements of different depths and working environments. UTILITY MODEL CONTENTS

[0005] In order to solve the problems of low cooling efficiency, poor debris removal, easy blockage and sticking, high equipment wear and tear, and complex installation and disassembly of the existing coal mine drilling equipment, the utility model provides a coal mine cutting seam drilling machine.

[0006] The utility model is realized through the following technical solutions:

[0007] A coal mine cutting seam drilling machine, comprising a propelling block, and a rotating cylinder inserted into the upper end of the propelling block,

[0008] The rotating cylinder is internally inserted with a debris removal pipe, the upper end of the debris removal pipe is inserted with a fixed block, the lower end of the debris removal pipe extends to the lower side of the propelling block, the inside of the debris removal pipe is inserted with a water delivery pipe, the water delivery pipe is connected with a spiral drill bit, and a plurality of water outlets and debris suction ports are arranged on the spiral drill bit.

[0009] The chip suction port is in communication with the inside of the chip removal pipe, and the water delivery pipe is used for delivering high-pressure water to water outlets of the spiral drill bit, and the high-pressure water discharged from the water outlets is used for cooling the spiral drill bit and flushing out the chips from the drilling hole;

[0010] The connecting column is connected with an adapter column, the lower end of the chip removal pipe is connected with the adapter column, and the adapter column is used for connecting a high-pressure water pump and a negative pressure suction device.

[0011] The further improvement of the utility model still has, first internal thread and first external thread are installed on the chip removal pipe, second internal thread and second external thread are installed on the water delivery pipe, and the chip removal pipe and the water delivery pipe are connected through thread screwing.

[0012] The further improvement of the utility model still has, an isolation column is arranged in the spiral drill bit, the isolation column divides the spiral drill bit into a drainage area and a chip suction area, a screw cylinder is inserted through the isolation column, and the screw cylinder is connected with the second external thread of the water delivery pipe through thread screwing.

[0013] The further improvement of the utility model still has, a spiral conveying block is arranged on the inner wall of the chip removal pipe, there is a gap between the spiral conveying block and the water delivery pipe inside the chip removal pipe, a plurality of connecting rods are uniformly arranged on the outer surface of the water delivery pipe, and the connecting rods are attached to the inner wall of the chip removal pipe and used for supporting and limiting the water delivery pipe.

[0014] The further improvement of the utility model still has, tracks are symmetrically arranged on one side of the pushing block, and the tracks are driven by track motors and used for moving the coal mine seam cutting drilling machine.

[0015] The further improvement of the utility model still has, a third external thread is arranged on the outer surface of the lower end of the spiral drill bit, and the third external thread is connected with the first internal thread of the chip removal pipe through thread screwing.

[0016] From the above technical scheme, the utility model has the beneficial effects that:

[0017] The utility model discloses a spiral drill bit, which comprises a spiral drill bit body, a chip removal pipe and a water delivery pipe.

[0018] The utility model discloses a dust suction port and the effect of the dust discharge pipe, and the dust suction port provides a discharge passage for the drillings, and the dust discharge pipe transports and collects the large amount of coal cinder and rock debris generated in the drilling process of the auger bit through the dust suction port and the dust discharge pipe, can discharge the drillings in time, avoids the drillings to accumulate in the drilling, avoids the occurrence of the phenomena of drill pipe blockage and sticking, and guarantees the continuity and stability of the drilling operation.

[0019] The utility model discloses the inner wall of dust discharge pipe adopts spiral conveying block, when spiral drill bit rotates, spiral conveying block rotates along with it, can drive coal cinder and rock debris to form the spiral advance movement in dust discharge pipe, effectively promotes the forward movement of the debris along the dust discharge pipe, prevents the accumulation and blockage of the debris in the pipe. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the utility model, the following will be to the description needed to use the drawing of simple introduction, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0021] Figure 1 It is the overall structure schematic diagram of the coal mine slit drill of the embodiment of the utility model.

[0022] Figure 2 It is Figure 1 It is the enlarged schematic diagram of A.

[0023] Figure 3 It is the internal structure schematic diagram of the dust discharge pipe of the coal mine slit drill of the embodiment of the utility model.

[0024] Figure 4 It is the drill rod connecting structure schematic diagram of the coal mine slit drill of the embodiment of the utility model.

[0025] Figure 5 It is the water delivery pipe structure schematic diagram of the coal mine slit drill of the embodiment of the utility model.

[0026] In the drawings, 1, propelling block, 2, rotating cylinder, 3, dust discharge pipe, 4, spiral drill bit, 5, water outlet, 6, dust suction port, 7, water delivery pipe, 8, adapter column, 9, connecting column, 10, fixed block, 11, first internal thread, 12, first external thread, 13, spiral conveying block, 14, second external thread, 15, second internal thread, 16, connecting rod, 17, isolation column, 18, screw cylinder, 19, third external thread, 20, caterpillar track. DETAILED DESCRIPTION

[0027] In order to make the purpose, characteristics and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be described clearly and completely in combination with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the patent, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the patent.

[0028] As Figures 1-4 shown, the utility model discloses a seam cutting drilling machine for coal mine.

[0029] Specifically, the seam cutting drilling machine for coal mine includes the propelling block 1 and the rotating cylinder 2 inserted in the upper end of the propelling block 1, the chip removal pipe 3 is inserted in the rotating cylinder 2, the chip removal pipe 3 extends out of the lower end of the propelling block 1, the fixed block 10 is inserted in the upper end of the chip removal pipe 3, the chip removal pipe 3 extends out of the upper end of the fixed block 10, the water delivery pipe 7 is inserted in the chip removal pipe 3, the spiral drill bit 4 is inserted in the upper end of the chip removal pipe 3 and the water delivery pipe 7, a plurality of water outlets 5 and chip suction ports 6 are uniformly arranged on the outer surface of the spiral drill bit 4, the connecting column 9 is inserted in the lower end of the chip removal pipe 3 and the water delivery pipe 7, and the adapter column 8 is rotatably connected to the lower end of the connecting column 9.

[0030] The adapter column 8 is used for connecting the high-pressure water pump and the negative pressure suction equipment, conveying the high-pressure water to the water delivery pipe 7 and sucking out the drill hole debris through the chip removal pipe 3, which can adapt to the working requirements of the spiral drill bit 4 rotation, ensure the continuity of the conveying and suction functions, provide good sealing and mechanical stability, prevent water or debris from leaking, and ensure safe operation under high pressure and negative pressure environment. The connecting column 9 serves as an intermediate connecting piece between the spiral drill bit 4 and the adapter column 8, ensures the power transmission of the drill bit and the cooperation of the water delivery and chip removal functions, plays a rotating support role, enables the spiral drill bit 4 to operate stably during work, avoids work interruption caused by loose connection, and has a structure design facilitating installation and disassembly, convenient maintenance or replacement of parts. The adapter column 8 and the connecting column 9 are used in cooperation, realize the high integration of the water delivery, chip removal and cooling functions, and ensure the overall reliability and working efficiency of the equipment.

[0031] After the installation and connection of each component are completed, the adjusting device is adjusted at this time to make the auger bit 4 closely adhere to the cut surface, and the pushing block 1 and the rotating cylinder 2 operate simultaneously. Under the driving of the existing device, the rotating cylinder 2 drives the auger bit 4 to rotate, and the pushing block 1 pushes the auger bit 4 to move in a deeper direction. When the auger bit 4 operates, the adapter column 8 simultaneously connects the high-pressure water pump and the negative pressure suction equipment. At this time, the water delivery pipe 7 delivers high-pressure water to the auger bit 4, which is discharged through the water outlet hole 5. The broken debris is sucked into the inside of the chip removal pipe 3 through the chip suction port 6. The water delivery pipe 7 and the water outlet hole 5 are used to deliver water from the water source to the vicinity of the water outlet hole 5. Under the action of the high-pressure water pump, the pressure of the water can be maintained. The high-pressure water sprayed through the water outlet hole 5 can flush out a large amount of coal cinder and rock debris generated in the drilling process of the auger bit 4, so that the drilling hole remains unobstructed. At the same time, a large amount of heat is generated when the auger bit 4 drills hard coal and rock at high speed. The water sprayed by the water outlet hole 5 can effectively take away the heat to prevent the drill bit from being damaged due to overheating and prolong the service life of the auger bit 4. The chip suction port 6 and the chip removal pipe 3 are used to provide a discharge channel for the drill chips. The chip removal pipe 3 connects the negative pressure suction equipment to transport and collect a large amount of coal cinder and rock debris generated in the drilling process of the auger bit 4 through the chip suction port 6 into the inside of the chip removal pipe 3. The drill chips can be discharged from the drilling hole in time to avoid the accumulation of drill chips in the drilling hole and the occurrence of drill pipe blockage and sticking phenomenon, thereby ensuring the continuity and stability of the drilling operation.

[0032] As shown in Figures 1-4 the first inner thread 11 is installed on the inner wall of one end of the chip removal pipe 3, and the first outer thread 12 is installed on the outer surface of the other end of the chip removal pipe 3. The first inner thread 11 is threadedly connected with the first outer thread 12.

[0033] The second inner thread 15 is installed on the inner wall of one end of the water delivery pipe 7, and the second outer thread 14 is installed on the outer surface of the other end of the water delivery pipe 7. The second inner thread 15 is located inside the chip removal pipe 3, and the second outer thread 14 extends out of the inside of the chip removal pipe 3. The second inner thread 15 is threadedly connected with the second outer thread 14.

[0034] When the first chip removal pipe 3 cannot reach the drilling depth, the chip removal pipe 3 is increased. When the first inner thread 11 and the first outer thread 12 of the two chip removal pipes 3 are in contact, the second inner thread 15 and the second outer thread 14 of the two water delivery pipes 7 are also in contact at this time. The rotating cylinder 2 drives the chip removal pipe 3 to rotate, and under the limiting of the fixed block 10, the two chip removal pipes 3 and the water delivery pipes 7 are connected. Threaded connection is adopted for easy installation and disassembly, and threaded connection can provide good sealing performance to improve the efficiency of chip removal. The threaded connection direction is consistent with the rotation direction of the auger bit 4, thereby improving the connection tightness of the device.

[0035] As shown in Figures 1-4As shown, the auger bit 4 is internally provided with an isolation column 17, the isolation column 17 is inserted with a screw cylinder 18, the screw cylinder 18 is threadedly connected with the second external thread 14, and the chip suction port 6 and the water outlet hole 5 are arranged on the two sides of the isolation column 17.

[0036] The lower end of the auger bit 4 is externally provided with a third external thread 19, and the third external thread 19 is threadedly connected with the first internal thread 11.

[0037] The internal part of the auger bit 4 is divided into a drainage area and a chip suction area by the isolation column 17, so that the two areas do not interfere with each other, and the working efficiency of the chip removal is improved.

[0038] As shown in the figure, Figures 1-4 The inner wall of the chip removal pipe 3 is provided with a spiral conveying block 13, and the spiral conveying block 13 has a certain gap with the water conveying pipe 7.

[0039] The connecting rod 16 provides support and limiting effect for the water conveying pipe 7, ensures the stability of the water conveying pipe 7 during operation and connection, and at the same time, the water conveying pipe 7 is inserted into the chip removal pipe 3, which can be installed at the same time, improve the installation efficiency, save the occupied space, and facilitate transportation and storage.

[0040] As shown in the figure, Figures 1-4 One side of the advancing block 1 is symmetrically provided with a track 20, and the track 20 is driven to move by a track motor.

[0041] The coal mine joint drilling machine moves under the rolling support of the track 20, improves the flexibility of the device, and at the same time, the track motor drives the track 20 to move, which can improve the moving speed of the device, so that the speed can reach 15m / min, and the machine is moved quickly.

[0042] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A slit drilling rig for coal mines, comprising a feed block (1) and a rotating cylinder (2) inserted into the upper end of the feed block (1), characterized in that: The rotating cylinder (2) is equipped with a chip removal pipe (3), and a fixing block (10) is inserted at the upper end of the chip removal pipe (3). The lower end of the chip removal pipe (3) extends to the bottom of the push block (1). A water supply pipe (7) is inserted inside the chip removal pipe (3). The water supply pipe (7) is connected to the auger drill bit (4). The auger drill bit (4) is provided with several water outlet holes (5) and chip suction ports (6). The chip suction port (6) is connected to the inside of the chip discharge pipe (3), and the water supply pipe (7) is used to transport high-pressure water to the water outlet (5) of the auger drill bit (4). The high-pressure water discharged from the water outlet (5) is used to cool the auger drill bit (4) and flush the chips out of the borehole. It also includes an adapter column (8), the lower end of the chip removal pipe (3) is connected to the adapter column (8) through a connecting column (9), the adapter column (8) is used to connect a high-pressure water pump and a negative pressure suction device to deliver high-pressure water to the water supply pipe (7), and to suck out the debris in the borehole through the chip suction port (6) and the chip removal pipe (3).

2. A coal mine slotter as claimed in claim 1 wherein, The chip removal pipe (3) is equipped with a first internal thread (11) and a first external thread (12), and the water supply pipe (7) is equipped with a second internal thread (15) and a second external thread (14). The chip removal pipe (3) and the water supply pipe (7) are connected by threaded engagement.

3. A coal mine slotter as claimed in claim 2 wherein: The auger drill bit (4) is provided with an isolation column (17) inside. The isolation column (17) divides the auger drill bit (4) into a drainage area and a chip suction area. A screw cylinder (18) is inserted through the isolation column (17). The screw cylinder (18) is threadedly connected to the second external thread (14) of the water supply pipe (7).

4. A coal mine slotter as claimed in claim 3 wherein: The inner wall of the chip removal pipe (3) is provided with a spiral conveying block (13). There is a gap between the spiral conveying block (13) and the water supply pipe (7) inside the chip removal pipe (3). Several connecting rods (16) are evenly installed on the outer surface of the water supply pipe (7). The connecting rods (16) are attached to the inner wall of the chip removal pipe (3) to provide support and limit the water supply pipe (7).

5. The coal mine slit cutting drill machine according to claim 1, characterized in that: The propulsion block (1) is symmetrically provided with a track (20) on one side. The track (20) is driven by a track motor to move the coal mine slotting drill.

6. The coal mine slit drilling machine according to claim 2, characterized in that: The lower outer surface of the auger drill bit (4) is provided with a third external thread (19), which is threadedly connected to the first internal thread (11) of the chip removal pipe (3).

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