CN212563136U

CN212563136U - Dustproof device of rock drill

Info

Publication number: CN212563136U
Application number: CN202021316923.5U
Authority: CN
Inventors: 郑春生
Original assignee: Zhejiang Kangchuang Machinery Co ltd
Current assignee: Zhejiang Kangchuang Machinery Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-02-19
Anticipated expiration: 2030-07-07

Abstract

The utility model relates to a rock drill technical field discloses a rock drill dust keeper includes: the corrugated pipe surrounds the drill rod so that the drill rod is positioned in the corrugated pipe, and one end of the corrugated pipe, close to the drill bit shank, is fixedly connected with the drill rod; the support structure is sleeved on the drill rod and can move back and forth along the axial direction of the drill rod, and the support structure is abutted against the inner wall of the corrugated pipe and used for expanding an inner channel of the corrugated pipe; and two ends of the spring are respectively connected with two adjacent support structures, and the spring is compressed along the axial direction of the drill rod from one end of the corrugated pipe close to the drill bit, so that the drill rod can extend out of the corrugated pipe. Through the arrangement of the technical scheme, the corrugated pipe provides a large accommodating volume, a large amount of raised dust can be handled, the supporting structure provides support for the corrugated pipe, the corrugated pipe is prevented from being loosened to touch the drill rod, and the drill rod with a long length can be adapted.

Description

Dustproof device of rock drill

Technical Field

The utility model relates to a rock drill technical field specifically relates to a rock drill dust keeper.

Background

Rock drills, which are tools used to directly mine rock, drill blastholes into rock formations to deposit explosives to blast the rock, thereby completing the mining of rock or other stone works. However, when the rock drill works, the drill steel repeatedly impacts the rock stratum, the rock stratum is locally crushed to form a blast hole, a large amount of dust can be formed on the crushed rock stratum, and the dust is raised and sucked by constructors to bring adverse effects to the health of the constructors, and even dust lung accidents can be caused.

In the prior art, a bowl-shaped dust cover is usually adopted to prevent dust from diffusing, but in a large construction site, the bowl-shaped dust cover is difficult to deal with a large amount of raised dust and adapt to a drill rod with a long length due to the deep depth of a blast hole. Therefore, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rock drill dust keeper, this utility model can solve the problem that exists among the prior art.

In order to realize the above-mentioned purpose, the utility model provides a rock drill dust keeper, include:

the corrugated pipe surrounds the drill rod so that the drill rod is positioned in the corrugated pipe, and one end of the corrugated pipe, close to the drill bit shank, is fixedly connected with the drill rod;

the support structure is sleeved on the drill rod and can move back and forth along the axial direction of the drill rod, and the support structure is abutted against the inner wall of the corrugated pipe and used for expanding an inner channel of the corrugated pipe;

and two ends of the spring are respectively connected with two adjacent support structures, and the spring is compressed along the axial direction of the drill rod from one end of the corrugated pipe close to the drill bit, so that the drill rod can extend out of the corrugated pipe.

Through the arrangement of the technical scheme, the corrugated pipe provides a large accommodating volume, a large amount of raised dust can be handled, the supporting structure provides support for the corrugated pipe, the corrugated pipe is prevented from being loosened to touch the drill rod, and the drill rod with a long length can be adapted.

Furthermore, the central sliding block is sleeved on the drill rod;

the fixing ring surrounds the central sliding block and is used for expanding the inner wall of the corrugated pipe;

and two ends of the supporting rod are respectively connected with the fixing ring and the supporting rod.

Furthermore, the inner wall of the central sliding block is provided with a plurality of grooves which are distributed at equal intervals in the circumferential direction, and balls are arranged in the grooves.

Further, the balls distributed at equal intervals in the circumferential direction are at least two rows.

Further, a support cylinder is fixedly connected to the support structure close to the bit.

Further, one end of the support cylinder close to the drill bit is provided with an adaptive ring.

Furthermore, one end of the corrugated pipe close to the drill shank is fixedly connected with a sealing cover, and a sleeve of the sealing cover is fixedly connected to the drill rod.

Further, a threaded through hole is formed in the sealing cover and used for discharging dust in the corrugated pipe; the thread through hole is provided with a thread cover matched with the thread.

Further, the corrugated pipe is made of rubber; the supporting cylinder is made of metal; the adaptation ring is made of rubber.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional perspective view along A-A of FIG. 4;

FIG. 4 is a schematic structural view of one embodiment of a support structure;

fig. 5 is an enlarged view of fig. 3 at a.

Description of the reference numerals

1 corrugated pipe 2 drill rod

21 bit 22 shank

3 spring 4 bearing structure

41 center slider 42 support bar

43 fixing ring 44 balls

5 support cylinder 6 adapting ring

7 sealing cover 8 threaded through hole

9 screw cap

Detailed Description

The following describes the embodiments of the present invention in detail. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, the use of the terms of orientation such as "upper and lower" in the case where no description is made to the contrary generally means the orientation in the assembled and used state. "inner and outer" refer to the inner and outer contours of the respective component itself.

The utility model discloses in provide a rock drill dust keeper, as shown in fig. 1-5, include:

the corrugated pipe 1 is surrounded outside the drill rod 2, so that the drill rod 2 is positioned in the corrugated pipe 1, and one end, close to a drill bit shank 22, of the corrugated pipe 1 is fixedly connected with the drill rod 2;

the support structures 4 are sleeved on the drill rods 2 and can move back and forth along the axial direction of the drill rods 2, the number of the support structures is 5 in the embodiment, the support structures can be adjusted in number according to the drill rods 2 with different lengths, and the support structures 4 are abutted against the inner wall of the corrugated pipe 1 and used for expanding the inner channel of the corrugated pipe 1; preferably, in the assembled state, the support structures are equally spaced axially along the shank 2;

springs 3, in this embodiment 4, each connected at both ends to two adjacent support structures 4, are compressed in the axial direction of the drill rod 2 from the end of the corrugated tube 1 near the drill bit 21, enabling the drill rod 2 to extend out of the corrugated tube 1, the springs 3 ensuring that the corrugated tube 1 can be pressed tightly against the surface of the rock and can be shortened adaptively as the drill rod 2 penetrates into the rock.

Through the arrangement of the technical scheme, the corrugated pipe 1 provides a large accommodating volume, a large amount of raised dust can be handled, the supporting structure 4 provides support for the corrugated pipe, the corrugated pipe 1 is prevented from being loosened to touch the drill rod 2, and the drill rod 2 with a long length can be adapted.

In order to alleviate in the assurance when can support bellows 1 the weight of bearing structure, the utility model discloses under the preferred condition, bearing structure is spoke wheel shape, bearing structure includes:

the central sliding block 41 is sleeved on the drill rod 2;

the fixing ring 43 surrounds the central sliding block 41 and is used for expanding the inner wall of the corrugated pipe 1;

and two ends of the supporting rod 42 are respectively connected to the fixing ring 43 and the supporting rod 42, and the supporting rods 42 are preferably distributed at equal intervals in the circumferential direction.

In order to reduce the friction between the central slider 41 and the drill rod 2, the present invention preferably provides that the inner wall of the central slider 41 is provided with a plurality of circumferentially equally spaced grooves, in which balls 44 are arranged.

In order to ensure that the friction between the central slider 41 and the drill rod 2 is completely rolling friction, the present invention preferably has a plurality of balls 44 arranged in a circumferentially equidistant manner in at least two rows.

In order to avoid the corrugated pipe 1 or the support structure 4 directly contacting the rock surface and blocking the blasthole, the utility model discloses under the preferred condition, the drill rod 2 has the drill bit 21 that is used for assaulting the rock and the drill bit 22 of being connected with power unit, is close to the drill bit 21 the support structure 4 fixedly connected with support cylinder 5.

In order to be able to adapt to irregularities in the rock surface and to make the device well sealed, the invention preferably provides that the end of the support cylinder 5 that is close to the bit 21 is provided with an adaptation ring 6.

In order to guarantee that the device leakproofness is good, the utility model discloses under preferred circumstances, bellows 1 is close to the sealed lid 7 of the one end fixedly connected with of bore bit shank 22, the cover fixed connection of sealed lid 7 in on the drill rod 2.

In order to ensure that the dust is too much and the corrugated pipe 1 cannot be accommodated, the utility model discloses in the preferred case, be provided with screw through-hole 8 on the sealed lid 7, screw through-hole 8 is used for discharging the dust in the corrugated pipe 1; the screw thread through hole 8 is provided with the screw thread lid 9 of screw thread looks adaptation, screw thread through hole 8 can be connected with the suction fan, collects too much dust or filters in the drainage aquatic.

Preferably, the corrugated pipe 1 is made of rubber; the supporting cylinder 5 is made of metal; the adaptation ring 6 is made of rubber.

The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. A rock drill dust keeper, its characterized in that includes:

the corrugated pipe (1) is surrounded outside the drill rod (2) so that the drill rod (2) is positioned in the corrugated pipe (1), and one end, close to a drill bit shank (22), of the corrugated pipe (1) is fixedly connected with the drill rod (2);

the support structure (4) is sleeved on the drill rod (2) and can move back and forth along the axial direction of the drill rod (2), and the support structure (4) is abutted against the inner wall of the corrugated pipe (1) and used for expanding an inner channel of the corrugated pipe (1);

and two ends of the spring (3) are respectively connected with two adjacent supporting structures (4), and the spring (3) is compressed along the axial direction of the drill rod (2) from one end, close to the drill bit (21), of the corrugated pipe (1), so that the drill rod (2) can extend out of the corrugated pipe (1).

2. A rock drill dust protection device according to claim 1, characterized in that the support structure (4) comprises:

the central sliding block (41) is sleeved on the drill rod (2);

the fixing ring (43) surrounds the central sliding block (41) and is used for expanding the inner wall of the corrugated pipe (1);

and the two ends of the supporting rod (42) are respectively connected with the fixing ring (43) and the supporting rod (42).

3. A rockdrill dust keeper according to claim 2, wherein the inner wall of the central slider (41) is provided with a plurality of circumferentially equally spaced grooves in which balls (44) are disposed.

4. A rockdrill dust protection arrangement according to claim 3, wherein there are at least two rows of a plurality of said balls (44) equally circumferentially spaced.

5. A rockdrill dust protection arrangement according to claim 1, wherein a support cylinder (5) is fixedly connected to the support structure (4) adjacent the bit (21).

6. Rock drill dust protection device according to claim 5, characterized in that the end of the support cylinder (5) near the bit (21) is provided with an adaptation ring (6).

7. A rock drill dust protection device according to claim 5, characterized in that a sealing cover (7) is fixedly connected to one end of the bellows (1) near the drill shank (22), and the sleeve of the sealing cover (7) is fixedly connected to the drill rod (2).

8. A rock drill dust keeper as claimed in claim 7, characterized in that the sealing cover (7) is provided with a threaded through hole (8), the threaded through hole (8) being used for discharging dust in the bellows (1); the thread through hole (8) is provided with a thread cover (9) matched with the thread.

9. A rock drill dust keeper as claimed in claim 5, characterized in that the bellows (1) is of rubber material; the supporting cylinder (5) is made of metal.