CN113374429B - Deep mine drilling draw gear - Google Patents

Abstract

The invention relates to the field of mineral resource mining machinery, in particular to a deep mine drilling traction device. It includes a traction head, a crawling mechanism and an explosion-proof motor; the crawling mechanism includes steel hoops arranged coaxially, and steel bars welded to the outer edges of all steel hoops along the axial direction of all steel hoops. The steel hoops and steel bars are composed of A tubular steel bar frame body, a worm wheel is installed on the steel bar hoop between adjacent steel bar bars, and a worm is threaded in the steel bar frame, and all the worm wheels are matched with the worm, and the worm is fixed with a An output shaft, one end of the output shaft is coaxially fixedly connected with the other end of the rotating shaft of the traction head, and the other end of the output shaft is coaxially fixedly connected with the output end of the explosion-proof motor. The invention can crawl in two directions. After the fracturing operation of one section of drilling is completed, it can crawl backward to the next section of drilling to continue the fracturing operation. The invention can be applied to the staged fracturing operation of deep mine drilling.

Description

A deep mine drilling traction device

technical field

The invention relates to the field of mineral resource mining machinery, in particular to a deep mine drilling traction device.

Background technique

In recent years, with the continuous increase of mining intensity, the mining depth of my country's coal mine resources has increased at a rate of 8 meters to 12 meters per year. A large number of coal mines have rapidly entered the deep mining stage, and deep mine mining is more difficult.

In order to ensure the safety of the staff, before mining the coal mine, it is necessary to extract the coalbed methane in the gap of the coal reservoir. When coalbed methane is exploited, it is necessary to use a fracturing device to form several cracks in the coal seam in the operation area. This process is called fracturing. Currently, prior to fracturing operations, it is necessary to drill a channel hundreds of meters deep and slowly feed the fracturing device wound on the winch into the borehole. This process has the following problems:

1. The fracturing device can only be slowly sent into or taken out of the hundreds of meters long borehole by manually turning the winch, without other power, the process of sending the fracturing device into the deep part of the borehole and taking it out is time-consuming and laborious.

2. The structure of the fracturing device is single, unable to excavate by itself, and the ability to deal with abnormal situations is insufficient. In case of unexpected abnormal situations such as obstacles and ore body collapse, the fracturing device can only be sent to this location for fracturing operations, and cannot continue to drill deeply for fracturing operations.

Therefore, it is necessary to invent a deep mine drilling traction device, so that the deep mine mining device can adapt to the complicated geological conditions of the deep mine, and can be sent into the deep part of the borehole more easily.

Contents of the invention

The invention provides a deep mine drilling traction device in order to solve the problem that the feeding and taking process of the deep mine mining device is time-consuming and laborious and is greatly affected by abnormal conditions.

The present invention is achieved through the following technical solutions: a traction device for deep mine drilling, including a traction head, a crawling mechanism and an explosion-proof motor;

The traction head includes a cylindrical barrel, a rotating shaft installed in the central hole of the cylindrical barrel, coaxially fixed at one end of the rotating shaft and a conical frustum protruding from the cylindrical barrel, and the ring is set on the conical surface of the conical frustum The helical teeth are coaxially fixed on the conical drill bit on the small end face of the conical truncated cone;

The crawling mechanism includes at least two reinforcement hoops arranged coaxially, at least three reinforcement rods welded to the outer edges of all reinforcement hoops along the axial direction of all reinforcement hoops, and the reinforcement hoops and reinforcement rods form a cylindrical reinforcement The frame body, at least one worm gear is installed on the steel hoop between the adjacent steel bar rods, and the worm is pierced in the steel frame body, and all the worm wheels are matched with the worm, and the output shaft is fixed in the worm , one end of the output shaft is coaxially fixedly connected with the other end of the rotating shaft of the traction head, one end of the steel bar is connected with the cylindrical barrel of the traction head, and the other end of the output shaft is the same as the output end of the explosion-proof motor The shaft is fixedly connected, and the other end of the steel bar is connected to the casing of the explosion-proof motor; the outer diameter of the steel bar frame is smaller than the cylindrical barrel of the traction head and the outer diameter of the explosion-proof motor, and the outermost wheel of all worm gears The diameter of the circle surrounded by the tooth tips is larger than the outer diameter of the cylindrical shell of the traction head and the explosion-proof motor.

As a further improvement of the technical solution of the present invention, an opening is provided on all steel hoops located outside the steel bar; at least three first pull rings are provided on the end face of the cylindrical cylinder located at the other end of the rotating shaft along the circumferential direction, The two ends of the steel bar are respectively provided with at least three second and third pull rings, and the upper ring of the explosion-proof motor is provided with at least three fourth pull rings, and all the second pull rings are connected with the first The pull rings correspond to each other and go through each other, and all the third pull rings and the fourth pull rings correspond to each other and go through each other.

As a further improvement of the technical solution of the present invention, all the worm gears are separately arranged on the steel hoops on the steel frame body at intervals.

As a further improvement of the technical solution of the present invention, the positions of openings on all steel hoops are located on the same straight line.

As a further improvement of the technical solution of the present invention, a camera is provided on the end surface of the cylindrical barrel close to the conical frustum.

As a further improvement of the technical solution of the present invention, the end surface of the cylindrical cylinder close to the conical truncated cone is a conical surface that transitions with the conical truncated circular truncated surface.

As a further improvement of the technical solution of the present invention, an arc-shaped groove matching the steel bar is provided on the outer edge of the steel hoop corresponding to the steel bar.

Compared with the prior art, the deep mine drilling traction device of the present invention has the following beneficial effects:

(1) The present invention is installed on the head of the fracturing device to provide additional traction power for the fracturing device, so that it can be sent to the deep part of the borehole. The difficulty of sending and taking out the fracturing device is reduced.

(2) The present invention adopts multiple sets of worm gear-worm mechanisms, so that it has certain redundancy characteristics. Even if individual worm-worm gears fail, the traction unit will still work. High reliability.

(3) The present invention can crawl in two directions. After the fracturing operation of one section of drilling is completed, it can crawl backward to the next section of drilling to continue the fracturing operation. The present invention can be applied to the segmented fracturing operation of deep mine drilling .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of the traction device for deep mine drilling according to the present invention.

Fig. 2 is a structural schematic diagram of the pulling head.

Fig. 3 is a structural schematic diagram of the crawling mechanism.

Fig. 4 is a structural schematic diagram of the steel bar frame.

Fig. 5 is a schematic diagram of the connection of the steel hoop and the steel bar.

Fig. 6 is a schematic diagram of cooperation between the worm wheel and the worm.

Fig. 7 is a view of the use state of the traction device for deep mine drilling.

In the figure: 1-pulling head, 101-cylindrical barrel, 102-conical round table, 103-helical teeth, 104-conical drill bit, 105-the first pull ring, 106-camera, 2-crawling mechanism, 201- Steel hoop, 202-steel bar, 203-worm gear, 204-worm, 205-second pull ring, 206-third pull ring, 207-opening, 208-output shaft, 3-explosion-proof motor, 301-fourth pull ring , 302-the fifth pull ring.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

As shown in Figures 1 to 6, the present invention provides a specific embodiment of a deep mine drilling traction device, including a traction head 1, a crawling mechanism 2 and an explosion-proof motor 3;

The traction head 1 includes a cylindrical barrel 101, a rotating shaft installed in the center hole of the cylindrical barrel 101, coaxially fixed on one end of the rotating shaft and a conical cone 102 protruding from the cylindrical barrel 101, which is arranged around the cone The helical tooth 103 on the conical surface of the circular platform 102 is coaxially fixed on the tapered drill bit 104 on the small end surface of the circular platform 102;

The crawling mechanism 2 includes at least two reinforcement hoops 201 arranged coaxially, at least three reinforcement sticks 202 welded to the outer edges of all reinforcement hoops 201 along the axial direction of all reinforcement hoops 201, the reinforcement hoops 201 and reinforcement bars Sticks 202 form a cylindrical steel bar frame body, and at least one worm gear 203 is installed on the steel bar hoop 201 between adjacent steel bar bars 202, and at least one worm wheel 203 is installed in the steel bar frame body, and all worm wheels 203 are connected with the worm screw 204, the worm 204 is fixed with an output shaft 208, one end of the output shaft 208 is coaxially fixedly connected with the other end of the rotating shaft of the traction head 1, and one end of the steel bar 202 is connected with the cylindrical shape of the traction head 1. The cylinder body 101 is connected, the other end of the output shaft 208 is coaxially fixedly connected with the output end of the explosion-proof motor 3, and the other end of the steel bar 202 is connected with the casing of the explosion-proof motor 3; The outer diameter is smaller than the outer diameter of the cylindrical barrel 101 of the traction head 1 and the explosion-proof motor 3, and the diameter of the circle surrounded by the outermost tooth tips of all worm gears 203 is larger than the cylindrical barrel 101 of the traction head 1 and the explosion-proof motor 3 outer diameters.

The present invention provides the specific working process of the deep mine drilling traction device:

(1) Advance process

As shown in FIG. 7 , the explosion-proof motor 3 is connected with the fracturing device through the fifth pull ring 302 . The cable is fixed on the fracturing device, and the power supply on the ground is connected with the explosion-proof motor 3 through the cable to provide power for the traction device. The explosion-proof motor 3 drives the worm screw 204 of the crawling mechanism 2 to rotate through the output shaft 208, and then transmits it to the worm wheel 203 matched with the worm screw 204, so that the worm wheel 203 rotates outward and drives the crawling mechanism 2 to crawl forward. The helical teeth 103 of the traction head 1 rotate to dig, and simultaneously sweep aside the hard obstacles ahead. The crawling mechanism 2 cooperates with the pulling head 1 to pull the fracturing device to the depth of the borehole.

(2) Backward process

The cable is reversely connected to the power supply, so that the explosion-proof motor 3 is reversed, and the driving worm 204 is reversed, and then passed to the worm wheel 203, so that the worm wheel 203 rotates inward and drives the crawling mechanism 2 to crawl backwards, pulling the fracturing device away from the borehole.

During specific implementation, the explosion-proof motor 3 can also be connected with the fracturing device through other connecting parts.

During specific use, in order to make the deep mine drilling traction device described in the present invention adapt to the complex and changeable geological conditions of drilling, further, an opening 207 is provided on all reinforcement hoops 201 outside the reinforcement rod 202; The end surface of the cylindrical barrel 101 at the other end of the rotating shaft is provided with at least three first pull rings 105 along the circumferential direction, and at least three second pull rings 205 and third pull rings are respectively provided at both ends of the steel bar 202. Ring 206, the casing upper ring of the explosion-proof motor 3 is provided with at least three fourth pull rings 301, all the second pull rings 205 correspond to the first pull rings 105 and pass through each other, and all the third pull rings 206 They are in one-to-one correspondence with the fourth pull rings 301 and go through each other. Because the steel bar hoop 201 has certain elasticity, the setting of the opening 207 can make the diameter of the steel bar hoop 201 have a certain variation margin, and the two ends of the steel bar bar 202 are a pull ring connection structure (the steel bar bar 202 is relative to the traction head 1 and the explosion-proof The motor 3 has a certain activity space in the radial direction), when the drilled hole is of irregular shape, the steel bar hoop 201 at the narrower position can be pressed to close (or partially close) the opening 207 according to the width of the drilled hole, and the steel bar frame The diameter at the body part is reduced, so that the worm wheel 203 and the worm 204 are closely matched, and the worm wheel 203 rotates with the rotation of the worm 204; Large, so that the worm wheel 203 and the worm screw 204 here are in a state of contact and fit, and the worm wheel 203 may rotate with the rotation of the worm screw 204 . Therefore, the reinforcement frame body provided by the present invention can change its diameter according to the drilling conditions, reduce the damage to the reinforcement frame body by obstacles in the drilling hole, and at the same time make the traction process smoother. Because the actual situation of drilling can not be a regular circular hole shape, during the actual use of the crawling mechanism 2 in the present invention, there may be some worm gears 203 rotating and some worm gears 203 not rotating, but this does not affect crawling Mechanism 2 forward and reverse use.

As shown in FIG. 3 , all the worm gears 203 are arranged at intervals on the steel bar hoops 201 on the steel bar frame body. On the basis of ensuring power, this can increase the overall rigidity of the steel frame.

Specifically, the positions of the openings 207 on all the reinforcement hoops 201 are located on the same straight line. When in use, as shown in Figure 5, steel bars 202 cannot be arranged on the steel bar 201 at the opening 207. A turbine 203 is also arranged on the reinforcement hoop 201 respectively.

In order to facilitate monitoring the working conditions of the tractor 1 when drilling into obstacles caused by factors such as mine collapse, a camera 106 is provided on the end surface of the cylindrical barrel 101 close to the conical round table 102 . Preferably, the camera 106 is located outside the helical teeth 103 to prevent the helical teeth 103 from obstructing the view of the camera 106 .

As shown in FIG. 2 , the end surface of the cylindrical body 101 close to the conical truncated cone 102 is a conical surface that transitions with the conical truncated cone 102 .

Further, in order to improve the tightness of the connection between the steel bar 202 and the steel hoop 201, and improve the rigidity of the steel frame body, the outer edge of the steel bar 201 corresponding to the steel bar 202 is provided with an arc-shaped recess that matches the steel bar 202. groove. The arc-shaped groove increases the contact area between the steel bar 202 and the steel hoop 201, improving the connection strength.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (6)

1. A deep mine drilling traction device is characterized by comprising a traction head (1), a crawling mechanism (2) and an explosion-proof motor (3);

the traction head (1) comprises a cylindrical barrel (101), a rotating shaft rotatably arranged in a central hole of the cylindrical barrel (101), a conical round table (102) coaxially fixed at one end of the rotating shaft and extending out of the cylindrical barrel (101), helical teeth (103) annularly arranged on the conical surface of the conical round table (102), and a conical drill bit (104) coaxially fixed on the small end surface of the conical round table (102);

the crawling mechanism (2) comprises at least two steel bar hoops (201) which are coaxially arranged, at least three steel bar rods (202) which are jointly welded to the outer edges of all the steel bar hoops (201) along the axial direction of all the steel bar hoops (201), a cylindrical steel bar frame body is formed by the steel bar hoops (201) and the steel bar rods (202), at least one worm wheel (203) is rotatably installed on the steel bar hoop (201) between every two adjacent steel bar rods (202), a worm (204) penetrates through the steel bar frame body, all the worm wheels (203) are matched with the worm (204), an output shaft (208) is fixedly arranged in the worm (204), one end of the output shaft (208) is coaxially and fixedly connected with the other end of a rotating shaft of the traction head (1), one end of each steel bar (202) is connected with the cylindrical barrel (101) of the traction head (1), the other end of the output shaft (208) is coaxially and fixedly connected with an output end of the explosion-proof motor (3), and the other end of each steel bar (202) is connected with a shell of the explosion-proof motor (3); the outer diameter of the steel bar frame body is smaller than the outer diameters of the cylindrical barrel body (101) of the traction head (1) and the explosion-proof motor (3), and the diameter of a circle formed by tooth tops of the outermost gear teeth of all the worm gears (203) is larger than the outer diameters of the cylindrical barrel body (101) of the traction head (1) and the explosion-proof motor (3);

all the steel bar hoops (201) positioned outside the steel bar (202) are provided with an opening (207); the end face of the cylindrical barrel body (101) located at the other end of the rotating shaft is provided with at least three first pull rings (105) in a surrounding mode in the circumferential direction, the two ends of the steel bar (202) are provided with at least three second pull rings (205) and third pull rings (206) respectively, the shell of the explosion-proof motor (3) is provided with at least three fourth pull rings (301), all the second pull rings (205) are in one-to-one correspondence with the first pull rings (105) and are sleeved with each other, and all the third pull rings (206) are in one-to-one correspondence with the fourth pull rings (301) and are sleeved with each other.

2. The deep mine borehole pulling apparatus as claimed in claim 1, wherein all worm gears (203) are respectively provided at intervals on a reinforcing bar hoop (201) on the reinforcement cage body.

3. A deep mine borehole pulling apparatus according to claim 1, wherein the openings (207) of all of the reinforcing steel hoops (201) are positioned in the same line.

4. The deep mine borehole pulling apparatus according to claim 1, wherein a camera (106) is provided on an end surface of the cylindrical barrel (101) adjacent to the conical frustum (102).

5. The deep mine drilling traction device as claimed in claim 1, wherein the end surface of the cylindrical barrel (101) close to the conical frustum (102) is a conical surface in transition fit with the conical frustum (102).

6. The deep mine drilling traction device as claimed in claim 1, wherein the outer edge of the reinforcing steel hoop (201) corresponding to the reinforcing steel bar (202) is provided with an arc-shaped groove matched with the reinforcing steel bar (202).

Images