CN212867465U

CN212867465U - Dry-type dustless pneumatic roofbolter

Info

Publication number: CN212867465U
Application number: CN202021474282.6U
Authority: CN
Inventors: 曹君陟; 郭克宝; 公为梅
Original assignee: Shandong Erdo New Material Co Ltd
Current assignee: Shandong Erdo New Material Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-02
Anticipated expiration: 2030-07-23

Abstract

The utility model provides a dry-type dustless pneumatic roofbolter, including rig main part, gas leg and operation arm, the output of rig main part is provided with the power take off cover, the power take off cover is connected with tubulose hollow drilling rod, the power take off cover is equipped with the dust cage outward, the dust cage is fixed connection in rig main part, form the dirt and dust discharge cavity between dust cage and the power take off cover, the power take off is sheathe in and is distributed with a plurality of through-holes, the inner chamber of hollow drilling rod is linked together with the dirt and dust discharge cavity through the through-hole, the dust cage is connected with the dust removal pipe, the dirt and dust discharge cavity is linked together with a negative pressure dust collecting container through the dust removal; a ball bearing is arranged at the connecting part of the dust hood and the power output sleeve, and a plurality of dust collection holes are arranged on the side wall of the hollow drill rod; the negative pressure dust collecting container is internally provided with a negative pressure fan and a dust filter screen. The jumbolter removes dust in a negative pressure dust collection mode, and overcomes the defects that the existing water injection dust removal mode easily pollutes the operation site environment and damages surrounding rocks of an operation surface.

Description

Dry-type dustless pneumatic roofbolter

Technical Field

The utility model relates to a mine and underground roadway support maintenance equipment technical field, concretely relates to dustless pneumatic roofbolter of dry-type.

Background

The anchor rod drilling machine, also known as anchor drilling machine, is a kind of support maintenance construction equipment widely used in mine or underground tunnel. At present, the jumbolter usually adopts the mode of water injection to the drill bit position by the inside cavity of drilling rod to remove dust, and the shortcoming of this mode lies in: the water injection can cause job site mud to pass all the way, and constructor operational environment is abominable, can cause very big destruction to the mine deep country rock simultaneously, especially meets the water-mud ization and the expanded soft rock tunnel country rock, brings the waste in difficulty and the economy to the use and the maintenance in tunnel later stage.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model provides a dry-type dustless pneumatic roofbolter, the technical scheme who takes as follows:

a dry-type dust-free pneumatic roofbolter comprises a driller main body, an air leg and an operating arm, wherein a power output sleeve is arranged at the output end of the driller main body, the power output sleeve is connected with a tubular hollow drill rod, a dust collection cover is arranged outside the power output sleeve and fixedly connected to the driller main body, a dust discharge cavity is formed between the dust collection cover and the power output sleeve, a plurality of through holes are distributed in the power output sleeve, and the inner cavity of the hollow drill rod is communicated with the dust discharge cavity through the through holes; the dust collecting cover is connected with a dust removing pipe, and the dust discharging cavity is communicated with a negative pressure dust collecting container through the dust removing pipe.

Preferably, a ball bearing is arranged at the connecting part of the dust collection cover and the power output sleeve, the ball bearing is sleeved on the power output sleeve, and the dust collection cover is clamped on the ball bearing outer ring.

Preferably, a plurality of dust suction ports are formed in the side wall of the hollow drill rod.

Preferably, a negative pressure fan and a dust filter screen are arranged in the negative pressure dust collecting container, the dust filter screen is positioned between the dust collecting pipe connecting opening and the negative pressure fan, and an air outlet is formed in one side, opposite to the dust collecting pipe connecting opening, of the negative pressure dust collecting container.

Further, the dust filter screen is detachable.

Furthermore, a pneumatic conveyor is arranged at the connecting part of the dust removing pipe and the dust collecting cover, and the pneumatic conveyor is connected with a high-pressure air input pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the dust removal mode of the conventional anchor rod drilling machine is changed, and self-suction dust removal is carried out through the negative pressure dust suction channel, so that compared with the traditional water injection dust removal mode, the construction environment of an operation site is greatly improved, and the damage to surrounding rocks of an operation surface is effectively avoided;

2. the dust collecting container and the drilling machine are in split design and are connected through the hose, so that the operation of the drilling machine is not influenced, and the tail dust is convenient to treat.

Drawings

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

FIG. 2 is a schematic view of the sectional structure inside the dust hood of the present invention;

FIG. 3 is a schematic view of a three-dimensional sectional structure inside the dust hood of the present invention;

fig. 4 is a schematic structural view of the pneumatic conveyor of the present invention.

In each figure: 1. a drill body; 2. a gas leg; 3. an operating arm; 4. a dust removal pipe; 5. a negative pressure dust collecting container; 11. a power take-off sleeve; 12. a hollow drill rod; 13. a dust collection cover; 14. dust is discharged out of the cavity; 15. a through hole; 16. a ball bearing; 17. a dust suction port; 41. a pneumatic conveyor; 42. a high pressure gas input pipe; 51. a negative pressure fan; 52. a dust filter screen; 53. and (7) air outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A dry type dust-free pneumatic jumbolter, as shown in figures 1 to 3, comprises a drill body 1, an air leg 2 and an operating arm 3, and the structure and connection relationship of the jumbolter are the same as those of the conventional jumbolter. The output end of the drilling machine main body 1 is provided with a power output sleeve 11, the power output sleeve 11 is connected with a tubular hollow drill rod 12, the hollow drill rod 12 can be screwed into the power output sleeve 11 through mutually matched threads or fixedly connected on the power output sleeve 11 through a screw rod and other modes, and the drilling machine main body 1 drives the hollow drill rod 12 to rotate through the power output sleeve 11 when working. The power output sleeve 11 is externally sleeved with a dust collection cover 13, the dust collection cover 13 is fixedly connected to the drill main body 1, a dust discharge cavity 14 is formed between the dust collection cover 13 and the power output sleeve 11, a plurality of through holes 15 are distributed on the power output sleeve 11, and the inner cavity of the hollow drill rod 12 is communicated with the dust discharge cavity 14 through the through holes 15. The dust hood 13 is connected with a dust removal pipe 4, and the dust discharge cavity 14 is communicated with a negative pressure dust collection container 5 through the dust removal pipe 4. The working principle of the device is as follows: when the drilling machine main body 1 works, the negative pressure dust collecting container 5 enables dust to be discharged out of the cavity 14 to generate relative negative pressure in a fan or air pump mode, the dust generated when a drill bit drills into a rock body enters the inner cavities of the hollow drill rod 12 and the power output sleeve 11, enters the dust discharging cavity 14 through the through hole 15 under the combined action of negative pressure suction force and the rotating centrifugal force of the power output sleeve 11, and is sucked into the negative pressure dust collecting container 5 through the dust collecting pipe 4, and the dust collecting pipe 4 can be made of rubber or a steel wire hose. According to the experience of actual operation, the dirt bits that produce when roofbolter's drill bit creeps into the rock mass can include partial granular rock grain, for guaranteeing the smooth suction of dirt bits, in the practical application, the width of through-hole 15 and the internal diameter size of dust removal pipe 5 are not less than 8mm, and through-hole 15 can be the circular port, also can be rectangular hole, and the width of through-hole 15 slightly is lighter than dust removal pipe 5 internal diameter, ensures that the dirt bits and the rock grain that get into dirt bits discharge cavity 14 can pass through dust removal pipe 5 smoothly, and some great rock grains can be detained in power take off cover 11, smashes back through-hole 15 and dust removal pipe 4 suction under power take off cover 11 continuously rotates, and some rock grains that are not discharged can pour out after the operation of creeping into. Compared with the prior art, the beneficial effects of the utility model reside in that: the dust removal mode of the conventional anchor rod drilling machine is changed, and self-suction dust removal is carried out through the negative pressure dust suction channel, so that compared with the traditional water injection dust removal mode, the construction environment of an operation site is greatly improved, and the damage to surrounding rocks of an operation surface is effectively avoided; the dust collecting container and the drilling machine are in split design and are connected through the hose, so that the operation of the drilling machine is not influenced, and the tail dust is convenient to treat.

Because the dust collection cover 13 is fixedly arranged on the drilling machine main body 1, the power output sleeve 11 is connected to the output end of the drilling machine main body 1, the drilling machine main body 1 drives the power output sleeve 11 to rotate to drive the hollow drill rod 12 to work, in order to reduce the friction between the dust collection cover 13 and the power output sleeve 11, in a preferred embodiment, as shown in fig. 2 and 3, a ball bearing 16 is arranged at the connecting part of the dust collection cover 13 and the power output sleeve 11, the inner ring of the ball bearing 16 is sleeved on the power output sleeve 11, and the dust collection cover 13 is clamped on the outer ring of the ball bearing 16. In order to prevent dust from falling into the ball bearing 16, dust blocking sheets may be provided on both sides of the ball bearing 16.

When the drilling machine works, dust generated when a drill bit drills into a rock body is mainly sucked through a cavity inside the hollow drill rod 12, but a small amount of rock dust and dust are scattered outside the drill rod, in a preferred embodiment, a plurality of dust suction holes 17 are formed in the side wall of the hollow drill rod 12, and the scattered dust can be sucked into the hollow drill rod 12 through the dust suction holes 17 and discharged. Because the main effect of this device is the dust removal, some bigger granule's rock pieces that scatter in the drill bit drilling process can't be absorbed away through dust absorption hole 17, but can not influence dust removal effect.

The negative pressure dust collecting container 5 mainly generates negative pressure relative to the dust discharging cavity 14, so as to suck out dust, and the common way of generating negative pressure includes using a fan or an air pump, etc. in a preferred embodiment, a negative pressure fan 51 and a dust filter screen 52 are arranged in the negative pressure dust collecting container 5, the dust filter screen 52 is located between the inlet of the dust removing pipe 4 and the negative pressure fan 51, and an air outlet 53 is arranged on the side of the negative pressure dust collecting container 5 opposite to the inlet of the dust removing pipe 4. The negative pressure fan 51 blows air towards the air outlet direction, so that negative pressure is generated on one side close to the dust removing pipe 4, the negative pressure can suck dust in the dust discharging cavity 14 into the negative pressure dust collecting container 15, the dust is collected in the negative pressure dust collecting container 15 through the isolation of the dust filter screen 52, the negative pressure dust collecting container 15 can be provided with an openable cover, and the dust can be dumped after the operation is finished. In a specific embodiment, the dust screen 52 is removably mounted within the negative pressure dust collection container 15 for periodic replacement and cleaning.

In order to further improve the dust suction efficiency, in a preferred embodiment, as shown in fig. 4, the dust removing pipe 4 is provided with a pneumatic conveyor 41 at a connection portion with the dust cage 13, and the pneumatic conveyor 41 is connected with a high-pressure air input pipe 42. The working principle of the pneumatic conveyor 41 is as follows: the pneumatic conveyor 41 is provided with a nozzle facing the dust discharging direction, and after high-pressure air enters the pneumatic conveyor 41, the high-pressure air is ejected at high speed to the dust discharging direction through the nozzle, so that a high negative pressure area is formed at the dust entering end, and dust is sucked out of the dust discharging cavity 14 and moves to the dust discharging direction along with the high-pressure air. The high-pressure air input pipe 42 can be supplied with air by a separately arranged high-pressure air pump, and can also share an air source with the jumbolter.

To sum up, the utility model provides a dry-type dustless pneumatic roofbolter simple structure, reasonable in design, convenient operation have effectively overcome current roofbolter water injection and have removed dust and seriously and destroy the problem of operation face country rock to the operation scene, have positive effect and actual use meaning.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a dustless pneumatic roofbolter of dry-type, includes rig main part (1), gas leg (2) and operation arm (3), its characterized in that: the drill is characterized in that a power output sleeve (11) is arranged at the output end of the drill main body (1), the power output sleeve (11) is connected with a tubular hollow drill rod (12), a dust collection cover (13) is sleeved outside the power output sleeve (11), the dust collection cover (13) is fixedly connected to the drill main body (1), a dust discharge cavity (14) is formed between the dust collection cover (13) and the power output sleeve (11), a plurality of through holes (15) are distributed on the power output sleeve (11), and the inner cavity of the hollow drill rod (12) is communicated with the dust discharge cavity (14) through the through holes (15); the dust hood (13) is connected with a dust removal pipe (4), and the dust discharge cavity (14) is communicated with a negative pressure dust collection container (5) through the dust removal pipe (4).

2. A dry dust-free pneumatic roofbolter as recited in claim 1, further comprising: the dust collection cover (13) is connected with the power output sleeve (11) through a ball bearing (16), the ball bearing (16) is sleeved on the power output sleeve (11), and the dust collection cover (13) is clamped on an outer ring of the ball bearing (16).

3. A dry dust-free pneumatic roofbolter as recited in claim 1, further comprising: the side wall of the hollow drill rod (12) is provided with a plurality of dust suction holes (17).

4. A dry dust-free pneumatic roofbolter as recited in claim 1, further comprising: be provided with negative pressure fan (51) and dust filter screen (52) in negative pressure dust collecting container (5), dust filter screen (52) are located dust removal pipe (4) insert the mouth with between negative pressure fan (51), negative pressure dust collecting container (5) with dust removal pipe (4) insert the relative one side of mouth and are provided with air outlet (53).

5. A dry dust free pneumatic roofbolter as recited in claim 4, further characterized by: the dust filter screen (52) is detachable.

6. A dry dust free pneumatic roofbolter as recited in claim 5, further comprising: the dust removal pipe (4) is provided with a pneumatic conveyor (41) at the connecting part of the dust collection cover (13), and the pneumatic conveyor (41) is connected with a high-pressure gas input pipe (42).