CN110905420B

CN110905420B - Large-aperture pressure relief drilling machine

Info

Publication number: CN110905420B
Application number: CN201911106683.8A
Authority: CN
Inventors: 李建平; 仑庆忠; 罗江南; 张禄洲; 程舒燕; 郑朝生
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2021-01-26
Anticipated expiration: 2039-11-13
Also published as: CN110905420A

Abstract

The invention discloses a large-aperture pressure relief drilling machine which comprises a movable base and a rail unit, wherein the movable base is provided with a movable base; a mechanical motion part is arranged on the track unit; the mechanical motion part includes: a working end; a hollow beam-shaped front vice is transversely fixed on the rail unit at the same side of the working end; the working end is provided with an annular ring beam, and two sides of the front vice are respectively provided with a dismounting device; the track unit is provided with a rear vice for disassembling the drill rod and a bracket for lifting the drill rod; the bracket is centered on the axis of the working head to the front vise. Has the advantages that: through the front vice, the bracket and the rear vice of different structures, the push drilling of the drill rod can be realized, the automatic disassembly can be realized, the labor is saved, and the working efficiency is improved. By using mechanized operation, a large-diameter drill rod exceeding the manpower bearing range can be used, and the efficiency of the pressure relief drilling machine is improved by one grade.

Description

Large-aperture pressure relief drilling machine

Technical Field

The invention relates to the field of mining machinery, in particular to a large-aperture pressure relief drilling machine.

Background

With the increase of coal mining depth and intensity, rock burst is more and more frequent, and the loss that causes also is bigger and bigger, and one of the main measures of colliery scour protection is at present to drill hole in the coal seam in order to release coal seam pressure, often uses the pressure release rig to carry out the pressure release work. Most of the conventional pressure relief drilling machines only comprise a working part pushed linearly, a power part output torque and a drill rod which is drilled into a rock stratum, and the positions needing pressure relief are deeper in the ground, so that the common drilling machines drill holes and relieve pressure by adopting a multi-section first-position assembly mode, and the rock stratum is drilled by utilizing a helical blade on the drill rod.

However, the required drilling depth is large, and the number of required drill rods is large, so that each section of drill rod needs to be assembled and disassembled. Due to the fact that the underground construction places are limited, the drill rod of the conventional pressure relief drilling machine needs to be manually completed when being spliced and disassembled. Due to the limited manual capacity, the drill rods used are not large in size and weight, which results in small and deep drill holes, and also requires that the operator must work near the drilling machine.

Disclosure of Invention

The invention provides a large-aperture pressure relief drilling machine, which aims to solve the problem that the traditional pressure relief drilling machine brings inconvenience when a drilling rod is mounted and dismounted.

In order to achieve the purpose, the invention adopts the following technical scheme: a large-aperture pressure relief drilling machine comprises a movable base and a track unit connected with a rotary support of the movable base; a mechanical motion part which reciprocates is arranged on the track unit; the mechanical motion part includes: a working end for outputting torque;

a hollow beam-shaped front vice is transversely fixed on the rail unit at the same side of the working end; the front vice with the coaxial working end is provided with an annular ring beam, and the hollow beams at the two sides of the front vice are respectively provided with a dismounting device for separating the connection of the drill rods; a rear vice for disassembling the drill rod and a bracket for lifting the drill rod are arranged on the track unit parallel to the central axis from the working end to the ring beam; the center of the bracket is on the axis from the working head to the front vice;

the rear vise includes: the U-shaped rear vice seat is arranged in the track unit, a first clamp rod and a second clamp rod are respectively hinged to two sides of the U-shaped bottom of the rear vice seat, a first sliding pin fixed on the first clamp rod is connected with a first waist hole in the second clamp rod in a sliding mode, and a first supporting cylinder for supporting the rear vice is hinged between the first clamp rod or the second clamp rod and the bottom of the rear vice seat.

Further, the bracket is a groove of a long arc-shaped plate.

Further, the bracket includes: the U-shaped bracket seat is arranged in the track unit, a first support rod and a second support rod are respectively hinged to two sides of the U-shaped bottom of the bracket seat, a second sliding pin fixed on the first support rod is connected with a second waist hole in the second support rod in a sliding mode, and a second supporting cylinder for supporting the bracket is hinged between the first support rod or the second support rod and the bottom of the bracket seat; two free ends of the first support rod and the second support rod are in long arc plate structures.

Further, the detaching device includes: the first push-pull oil cylinder and the second push-pull oil cylinder are respectively arranged on two sides of the rear vice beam, and the telescopic ends of the first push-pull oil cylinder and the second push-pull oil cylinder are oppositely arranged.

Furthermore, the telescopic ends of the first push-pull oil cylinder and the second push-pull oil cylinder are respectively hinged with the first push block and the second push block.

Furthermore, the lower part of the ring beam is detachably connected with the track unit through a supporting block.

Furthermore, two free ends of the first clamping rod and the second clamping rod are respectively provided with a first pressing block and a second pressing block.

Further, the distance from the rear vice to the front vice is consistent with the distance of the unlocking pins at two ends of the drill rod.

Compared with the prior art, the invention has the following beneficial effects: through the front vice, the bracket and the rear vice of different structures, the push drilling of the drill rod can be realized, the automatic disassembly can be realized, the labor is saved, and the working efficiency is improved. By using mechanized operation, a large-diameter drill rod exceeding the manpower bearing range can be used, and the efficiency of the pressure relief drilling machine is improved by one grade.

Drawings

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

FIG. 2 is a schematic view of the rear vise in the present invention;

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

FIG. 4 is a schematic view of the front vise in the present invention.

In the figure, 1 is a moving base, 11 is a rotary support, 2 is a track unit, 3 is a mechanical motion part, 4 is a working end, 50 is a rear vice seat, 51 is a first vice rod, 511 is a first sliding pin, 512 is a first pressing block, 52 is a second vice rod, 521 is a first waist hole, 522 is a second pressing block, 53 is a first supporting cylinder, 60 is a bracket seat, 61 is a first supporting rod, 611 is a second sliding pin, 62 is a second supporting rod, 621 is a second waist hole, 63 is a second supporting cylinder, 7 is a front vice, 71 is a ring beam, 72 is a first push-pull oil cylinder, 721 is a first push block, 73 is a second push-pull oil cylinder, 731 is a second push block and 74 is a supporting block.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1, a large-aperture pressure relief drilling machine comprises a movable base 1, wherein the specific structure of the movable base 1 is a vehicle chassis which is known at present and is mainly used for moving the pressure relief drilling machine; further comprising: and a rail unit 2 connected to the swing support 11 of the moving base 1. The track unit 2 is a structure for pushing the front leg of the drill rod in the pressure relief drilling machine in the prior art. In the prior art at present, be equipped with reciprocating motion's mechanical motion portion 3 on the track unit 2, wherein mechanical motion portion 3's main effect utilizes track unit 2 to promote before the drilling rod, forces the drilling rod can directly go into the stratum, utilizes the moment of torsion output part in the mechanical motion portion 3 simultaneously, utilizes the moment of torsion to carry out the drilling with the drilling rod to the stratum. In the present pressure relief drilling machine, the mechanical movement portion 3 includes: the torque output working head 4, typically the torque output working head 4 comprises a hydraulically or otherwise powered rotary table.

As shown in fig. 4, to solve the problems mentioned in the background art: and each section of drill rod needs to be assembled and disassembled manually, the labor intensity is high, and the like, and a hollow beam-shaped front vice 7 is transversely fixed on the rail unit 2 at the same side of the working end 4. To reduce the length of the entire drilling machine, a front vise 7 is generally provided at the end of the rail unit 2. Wherein, the front vice 7 with the coaxial working end 4 is provided with an annular ring beam 71, and the hollow beams at the two sides of the front vice 7 are respectively provided with a detaching device for separating the connection of the drill rods.

The function of the collar 71 is not only to allow the drill rod to pass through, but also to reduce or avoid the following situations: during operation of the drilling machine, a plurality of drill rods which penetrate into a rock stratum and are connected in the head position can cause final drilling holes to deviate from a target position due to self weight, and the ring beam 71 is arranged to limit excessive deviation of the drill rods by utilizing self round. For supporting the ring beam 71, the underside of the ring beam 71 is detachably connected to the rail unit 2 via a support block 74.

As shown in fig. 4, in order to facilitate the disassembly of the connected drill rod, the two sides of the front vise 7 are also provided with a disassembling device, wherein the disassembling device mainly comprises: the detaching device includes: the first push-pull oil cylinder 72 and the second push-pull oil cylinder 73 are respectively arranged at two sides of the cross beam of the front vice 7, and the telescopic ends of the first push-pull oil cylinder 72 and the second push-pull oil cylinder 73 are oppositely arranged. Further, the telescopic ends of the first push-pull cylinder 72 and the second push-pull cylinder 73 are respectively hinged with the first push block 721 and the second push block 731. For the drill rod which is already withdrawn, the first push-pull oil cylinder 72 and the second push-pull oil cylinder 73 can be used for simultaneously pressing the inner part of the ring beam 71, so that the switch at the connection part of the drill rod in the ring beam 71 is opened, and then the two drill rods can be separated. Wherein, the distance from the back vice to the front vice 7 is consistent with the distance of the unlocking pins at the two ends of the drill rod.

In order to facilitate the disassembly of the connected drill rod from the working end head 4, a rear vice for disassembling the drill rod is arranged on the track unit 2 parallel to the central axis from the working end head 4 to the ring beam 71. Wherein, the concrete structure of the rear vice can be as shown in fig. 2, the rear vice comprises: the U-shaped rear vice seat 50 arranged in the rail unit 2 is hinged with a first vice rod 51 and a second vice rod 52 at two sides of the U-shaped bottom of the rear vice seat 50 respectively, a first sliding pin 511 fixed on the first vice rod 51 is connected with a first waist hole 521 in the second vice rod 52 in a sliding manner, and a first supporting cylinder 53 for supporting the rear vice is hinged between the first vice rod 51 or the second vice rod 52 and the bottom of the rear vice seat 50. In order to realize that the first supporting cylinder 53 supports the front vise, the bottom mounting position of the first supporting cylinder 53 is required to be not on the same side as the top mounting position, so as to avoid the occurrence of a dead zone in the acting force. As shown in fig. 2, the two ends of the first supporting cylinder 53 are hinged to the root parts of the first and

second clamping rods

51 and 52; the two ends of the first supporting cylinder 53 may be further hinged to the root portions of the second and

first clamp rods

52 and 51.

Taking fig. 2 as an example, when the first supporting cylinder 53 extends, it will press the second vise rod 52, so that the first waist hole 521 slides, and the whole front vise generates a shearing effect; meanwhile, because the two free ends of the first and

second clamping bars

51 and 52 are respectively provided with the first and second

pressing blocks

512 and 522, the separation of the drill rod from the working end head 4 can be realized by using the extrusion acting force of the first and second pressing blocks.

In order to facilitate the centering of the rear end drill rod and the front end drill rod, a bracket for lifting the drill rod is also arranged; wherein the centre of the bracket is on the axis of the working head 4 to the front vise 7; typically, the brackets are in the form of elongate arcuate plate recesses. Wherein, the specific structure of the bracket can be as shown in fig. 3, the bracket comprises: a U-shaped bracket seat 60 arranged in the track unit 2, wherein a first supporting rod 61 and a second supporting rod 62 are respectively hinged on two sides of the U-shaped bottom of the bracket seat 60, a second sliding pin 611 fixed on the first supporting rod 61 is connected with a second waist hole 621 in the second supporting rod 62 in a sliding way, and a second supporting cylinder 63 for opening the bracket is hinged between the first supporting rod 61 or the second supporting rod 62 and the bottom of the bracket seat 60; the two free ends of the first support rod 61 and the second support rod 62 are in long arc plate structures.

As shown in figure 3, the working principle of the bracket is similar to that of a front vice, but the bracket is provided with a long arc-shaped plate structure, the lifting structure not only has a good centering effect, but also can ensure that the drill rod cannot fall down and hit the drilling machine when the drill rod is disassembled.

As shown in fig. 1, 2, 3 and 4, when drilling a coal wall, the drill rod is grabbed onto the pallet by the robot, the drill rod is aligned with the axis between the working head 4 and the ring beam 71 by the extension and contraction of the second support cylinder 63, and then the first section of drill rod is placed on the pallet. And the working end head 4 is in transmission connection with the drill rod, and then the drill rod is pushed into the rock stratum by using the working end head 4. After the working end head 4 moves from one end of the track unit 2 to the other end, the pushing of the first section of drill rod is completed, and at the moment, the first push-pull oil cylinder 72 and the second push-pull oil cylinder 73 in the front vice are started, so that the exposed tail end of the first section of drill rod is separated from the working end head 4.

After the working end head 4 is pushed to the position, a second section of drill rod is put in, and the second section of drill rod is in transmission connection with the exposed end of the first section and is in transmission connection with the working end head 4, and the second section of drill rod is pushed by torque again.

After the drilling is finished, the disassembly of the drill rod can be finished through the reverse operation of the working process. The difference lies in that after a section of drilling rod is pulled out at the working end 4, the bracket rises to the extreme position, the front end of the drilling rod and the rear end of another drilling rod are unlocked by the front vice 7 when the drilling rod is disassembled, the drilling rod and the working end 4 are unlocked by the rear vice, the drilling rod is supported by the bracket, then the drilling rod is grabbed to the drilling rod box by the manipulator, and the drilling is carried out in a circulating reciprocating manner to complete a group of drilling holes.

So far, the inconvenience of manual dismantlement drilling rod is solved to cooperation of vice 7, bracket and back vice before utilizing, has improved labor efficiency.

Claims

1. A large-aperture pressure relief drilling machine is characterized in that: comprises a movable base (1) and a track unit (2) connected with a rotary support (11) of the movable base (1); a mechanical motion part (3) which reciprocates is arranged on the track unit (2); the mechanical motion part (3) comprises: a working end (4) for outputting torque;

a hollow beam-shaped front vice (7) is transversely fixed on the track unit (2); the working end (4) and the front vice (7) are respectively arranged at two ends of the track unit (2); an annular ring beam (71) is arranged on a front vice (7) with a coaxial working end (4), and detaching devices for separating drill rod connections are respectively arranged in hollow beams on two sides of the front vice (7);

a rear vice for disassembling the drill rod and a bracket for supporting and lifting the drill rod are arranged on the track unit (2) between the working end head (4) and the ring beam (71), and the rear vice is parallel to the central axis of the working end head (4); the center of the bracket is on the axis from the working end head (4) to the front vice (7);

the rear vise includes: the U-shaped rear vice seat (50) arranged in the track unit (2) is hinged with a first vice rod (51) and a second vice rod (52) on two sides of the U-shaped bottom of the rear vice seat (50), a first sliding pin (511) fixed on the first vice rod (51) is in sliding connection with a first waist hole (521) in the second vice rod (52), and a first supporting cylinder (53) for supporting the rear vice is hinged between the first vice rod (51) or the second vice rod (52) and the bottom of the rear vice seat (50).

2. The large bore pressure relief drill according to claim 1, wherein: the bracket is a groove of a long arc-shaped plate.

3. The large bore pressure relief drill according to claim 1 or 2, wherein: the bracket includes: the U-shaped bracket seat (60) is arranged in the track unit (2), a first supporting rod (61) and a second supporting rod (62) are respectively hinged to two sides of the U-shaped bottom of the bracket seat (60), a second sliding pin (611) fixed on the first supporting rod (61) is in sliding connection with a second waist hole (621) in the second supporting rod (62), and a second supporting cylinder (63) for supporting the bracket is hinged between the first supporting rod (61) or the second supporting rod (62) and the bottom of the bracket seat (60);

the free ends of the first support rod (61) and the second support rod (62) are in long arc plate structures.

4. The large bore pressure relief drill according to claim 1, wherein: the detaching device includes: a first push-pull oil cylinder (72) and a second push-pull oil cylinder (73) are respectively arranged in hollow beams at two sides of the front vice (7), and the telescopic ends of the first push-pull oil cylinder (72) and the second push-pull oil cylinder (73) are oppositely arranged.

5. The large bore pressure relief drill according to claim 4, wherein: the telescopic ends of the first push-pull oil cylinder (72) and the second push-pull oil cylinder (73) are respectively hinged with a first push block (721) and a second push block (731).

6. The large bore pressure relief drill according to claim 1, wherein: the lower part of the ring beam (71) is detachably connected with the track unit (2) through a supporting block (74).

7. The large bore pressure relief drill according to claim 1, wherein: the free ends of the first clamp rod (51) and the second clamp rod (52) are respectively provided with a first pressing block (512) and a second pressing block (522).

8. The large bore pressure relief drill according to claim 1, wherein: the distance from the rear vice to the front vice is consistent with the distance between the unlocking pins at the two ends of the drill rod.