CN219327520U

CN219327520U - Down-the-hole hammer guider

Info

Publication number: CN219327520U
Application number: CN202320525507.3U
Authority: CN
Inventors: 何清华; 高淑蓉; 田德俊; 唐卫国
Original assignee: Sunward Intelligent Equipment Co Ltd
Current assignee: Sunward Intelligent Equipment Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-07-11
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses a down-the-hole hammer guiding device, comprising: a drill rod; the body is sleeved on the periphery of the drill rod in a rotatable manner relative to the drill rod; the supporting device is arranged on the body and can stretch out and draw back along the radial direction of the drill rod, and the supporting device contacts with the inner wall of the drill hole when extending out. When the down-the-hole hammer guiding device works, the drill rod rotates relative to the body to drill, the supporting device stretches out along the radial direction of the drill rod until contacting the inner wall of a drilled hole drilled by the down-the-hole hammer, at the moment, the supporting device can provide support for the drill rod and correct the drilling direction of the drill rod, so that the deviation of a hole forming path can be reduced, the hole forming effect is improved, and the down-the-hole hammer guiding device is particularly suitable for large-diameter deep hole down-the-hole hammers.

Description

Down-the-hole hammer guider

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a down-the-hole hammer guiding device.

Background

In the prior art, a guide device is not arranged on the down-the-hole hammer, and particularly for a large-diameter deep-hole down-the-hole hammer, in the drilling process, the drilled hole has deviation from an original planned hole forming path, so that the hole forming effect is poor.

Therefore, how to provide a down-the-hole hammer guiding device to reduce the deviation of the hole forming path is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a down-the-hole hammer guide device capable of reducing deviation of a hole forming path.

In order to achieve the above object, the present utility model provides the following technical solutions:

a down-the-hole hammer guide comprising:

a drill rod;

the body is sleeved on the periphery of the drill rod in a rotatable manner relative to the drill rod;

the supporting device is arranged on the body and can stretch out and draw back along the radial direction of the drill rod, and the supporting device contacts with the inner wall of the drill hole when extending out.

Optionally, a groove is formed in the outer periphery of the body, and the supporting device is a supporting oil cylinder embedded in the groove.

Optionally, the body is provided with at least one groove group along its axial direction, each groove group comprising at least three grooves distributed along the same circumference of the body.

Optionally, the body and the drill rod are connected by a bearing.

Optionally, the drilling rod includes the transition drilling rod, the drill bit end connection bundling hammer of transition drilling rod, transition drilling rod overcoat is equipped with first sleeve, first sleeve is used for carrying out the axial spacing to the bearing.

Optionally, the drill pipe further comprises a second sleeve connected with the transition drill pipe, and the second sleeve is connected with the first sleeve.

Optionally, the second sleeve includes:

the first connecting part is in threaded connection with the inner wall of the transition drill rod;

the second connecting part is vertically connected with the first connecting part, extends out of the end face of the transition drill rod and is connected with the first sleeve through a fastener.

Optionally, the drill rod further comprises a connecting rod, the connecting rod is connected with the transition drill rod, a third sleeve is sleeved outside the connecting rod, and the third sleeve is used for axially limiting the bearing.

Optionally, the body is provided with a first limiting boss for axially limiting the bearing.

Optionally, a second limiting boss for axially limiting the bearing is arranged on the outer periphery of the drill rod.

When the down-the-hole hammer guiding device provided by the utility model works, the drill rod rotates relative to the body to drill, and the supporting device extends out along the radial direction of the drill rod until contacting the inner wall of a drilled hole drilled by the down-the-hole hammer, at the moment, the supporting device can provide support for the drill rod and correct the drilling direction of the drill rod, so that the deviation of a hole forming path can be reduced, the hole forming effect is improved, and the down-the-hole hammer guiding device is especially suitable for large-diameter deep hole down-the-hole hammer.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings may be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a down-the-hole hammer guide according to one embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is a schematic view of a down-the-hole hammer guide according to another embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of a bundling hammer;

FIG. 5 is a schematic view of a down-the-hole hammer guide of an embodiment of the present utility model;

FIG. 6 is an enlarged view of a portion of B in FIG. 5;

FIG. 7 is a schematic view of a down-the-hole hammer guide of another embodiment of the present utility model;

FIG. 8 is an enlarged view of a portion of C in FIG. 7;

fig. 9 is a partial enlarged view of D in fig. 7.

Reference numerals in fig. 1 to 9 are as follows:

the drilling machine comprises a body 1, a first limiting boss 11, a supporting device 2, a bearing 3, a transition drill rod 41, a connecting rod 42, a second limiting boss 421, a bundling hammer 5, a first sleeve 6, a second sleeve 7, a fastening piece 8, a third sleeve 9, a rock stratum 10 and a drilling hole 101.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The core of the utility model is to provide a down-the-hole hammer guiding device which can reduce deviation of a hole forming path.

Referring to fig. 1-9, fig. 1 is a schematic structural diagram of a down-the-hole hammer guiding device according to an embodiment; FIG. 2 is an enlarged view of a portion of FIG. 1A; FIG. 3 is a schematic view of a down-the-hole hammer guide according to another embodiment; FIG. 4 is a schematic view of the structure of a bundling hammer; FIG. 5 is a schematic view of a down-the-hole hammer guide in accordance with one embodiment; FIG. 6 is an enlarged view of a portion of B in FIG. 5; FIG. 7 is a schematic view of a down-the-hole hammer guide in accordance with another embodiment; FIG. 8 is an enlarged view of a portion of C in FIG. 7; fig. 9 is a partial enlarged view of D in fig. 7.

The embodiment of the utility model provides a down-the-hole hammer guiding device which comprises a drill rod, a body 1 and a supporting device 2; the body 1 is sleeved on the periphery of the drill rod, and the drill rod can rotate relative to the body 1; the support device 2 is arranged on the body 1, the support device 2 can stretch out and draw back along the radial direction of the drill rod, and the support device 2 contacts with the inner wall of the drill hole 101 when extending out.

It will be appreciated that during operation of the down-the-hole hammer, the drill rod is rotated relative to the body 1 to drill, the support device 2 extends radially of the drill rod until contacting the inner wall of the borehole 101 drilled by the down-the-hole hammer, at this time, the support device 2 can provide support for the drill rod to correct the drilling direction of the drill rod, thereby reducing deviation of the hole forming path and improving the hole forming effect, and the down-the-hole hammer is particularly suitable for large-diameter deep hole down-the-hole hammers.

It should be noted that, during drilling, the friction force of the supporting device 2 protruding to contact with the inner wall of the borehole 101 is small and insufficient to resist the drilling force of the drill rod, so that during drilling, the body 1 and the supporting device 2 move axially along with the drilling of the drill rod. In addition, when the drill rod needs to be retracted after drilling is completed, the support device 2 is retracted so that the support device 2 is away from the inner wall of the borehole 101, facilitating the retraction of the drill rod.

It should be noted that, in the embodiment of the present utility model, the specific structure of the supporting device 2 is not limited, as long as the supporting device 2 can extend and retract along the radial direction of the drill rod.

In some embodiments, the outer periphery of the body 1 is provided with a groove, and the support device 2 is a support cylinder embedded in the groove. That is, the supporting device 2 in this embodiment is a supporting cylinder, and when in operation, the supporting device 2 is stretched by the stretching movement of the supporting cylinder. In addition, the supporting oil cylinder is embedded in the groove, which is beneficial to reducing the overall radial dimension of the down-the-hole hammer guiding device.

Further, the specific number and distribution of the grooves provided on the body 1 are not limited in the embodiment of the present utility model, so long as the grooves can provide support for the drill pipe, correct the drilling direction of the drill pipe, and reduce deviation of the hole forming path, and those skilled in the art can set the grooves according to actual requirements. It can be understood that the number of the supporting cylinders is the same as that of the grooves, and the supporting cylinders and the grooves are arranged in a one-to-one correspondence manner.

In some embodiments, the body 1 is provided with at least one groove set along its axial direction, each groove set comprising at least three grooves distributed along the same circumference of the body 1. That is, at least three grooves are formed along the same circumference of the body 1, that is, at least three support cylinders are formed, so that more than three support cylinders act together to support the drill rod in a whole circle, thereby being beneficial to improving the accuracy of the drilling direction of the drill rod. In addition, one or more groove groups may be disposed along the axial direction of the body 1 according to actual requirements, for example, the drill pipe includes a transition drill pipe 41, the transition drill pipe 41 is connected with the bundling hammer 5, and when the body 1 is sleeved outside the transition drill pipe 41 by Zhou Bushi, two groove groups are disposed along the axial direction of the body 1 in consideration of that the transition drill pipe 41 is located at the front end of the drill pipe or the length of the transition drill pipe 41 is longer. In addition, when the drill rod comprises a connecting rod 42, the connecting rod 42 is sleeved with a body 1, the body 1 is provided with a groove, the groove is embedded with a supporting device 2, and at the moment, a groove group can be arranged in the axial direction of the body 1.

In addition, to facilitate the rotational connection of the body 1 to the drill rod, in some embodiments, the body 1 and the drill rod are connected by a bearing 3. The connection is convenient and the implementation is convenient.

It should be noted that the specific number of bearings 3 between the body 1 and the drill rod is not limited in this embodiment, and in consideration of stability of the rotational connection, in some embodiments, the body 1 and the drill rod are connected by two bearings 3.

In order to achieve axial limitation of the bearing 3, in some embodiments, the drill rod includes a transition drill rod 41, a drill bit end of the transition drill rod 41 is connected with the bundling hammer 5, a first sleeve 6 is sleeved outside the transition drill rod 41, and the first sleeve 6 is used for axial limitation of the bearing 3. That is, when the drill rod is the transition drill rod 41, the body 1 is sleeved outside the transition drill rod 41, and at this time, the bearing 3 is axially limited through the first sleeve 6 arranged on the transition drill rod 41, so that the bearing 3 can be rapidly positioned during installation, and meanwhile, the bearing 3 is prevented from being axially misplaced in the moving process.

Further, in order to make the connection of the first sleeve 6 with the drill rod more reliable, in some embodiments the down-the-hole hammer guiding device further comprises a second sleeve 7 connected with the transition drill rod 41, the second sleeve 7 being connected with the first sleeve 6. That is, in the present embodiment, the first sleeve 6 is connected to the transition rod 41 by the second sleeve 7, which is convenient for ensuring the structure and position of the first sleeve 6 on the one hand, and for connecting the first sleeve 6 to the transition rod 41 on the other hand.

Further, to facilitate disassembly, in some embodiments, the second sleeve 7 includes a first connection portion and a second connection portion, the first connection portion being threadedly connected to an inner wall of the transition drill rod 41; the second connecting part is vertically connected with the first connecting part, extends out of the end surface of the transition drill rod 41 and is connected with the first sleeve 6 through the fastener 8. That is, the second sleeve 7 is screwed with the transition drill rod 41, and the second sleeve 7 is connected with the first sleeve 6 by the fastener 8, so that the first sleeve 6 is connected with the transition drill rod 41 more firmly. And the threaded connection and the connection of the fastener 8 are detachable, so that the down-the-hole hammer guiding device is convenient to disassemble and assemble.

In addition, in some embodiments, the drill rod further comprises a connecting rod 42, the connecting rod 42 is connected with the transitional drill rod 41, a third sleeve 9 is sleeved outside the connecting rod 42, and the third sleeve 9 is used for axially limiting the bearing 3. That is, when the drill rod is the extension rod 42, the body 1 is sleeved outside the extension rod 42, and at this time, the bearing 3 is axially limited by the third sleeve 9 arranged on the extension rod 42, so that the bearing 3 can be quickly positioned during installation, and meanwhile, the bearing 3 is prevented from being axially misplaced in the moving process.

It will be appreciated that either the first sleeve 6 or the third sleeve 9 may be used to limit one end of the bearing 3, and that in order to facilitate axial limiting of the other end of the bearing 3, the body 1 is provided with a first limiting boss 11 for axially limiting the bearing 3 in some embodiments. That is, the first limiting boss 11 is utilized to axially limit the bearing 3 in the present embodiment, and during installation, one end of the bearing 3 is abutted against the first limiting boss 11, so that the bearing 3 is convenient to install and position, and meanwhile, axial dislocation of the bearing 3 in the moving process is avoided.

In addition, in some embodiments, the outer peripheral portion of the drill rod is provided with a second limiting boss 421 for axially limiting the bearing 3. That is, the second limiting boss 421 is utilized to axially limit the bearing 3 in this embodiment, and during installation, one end of the bearing 3 abuts against the second limiting boss 421, so that the bearing 3 is convenient to install and position, and meanwhile, axial dislocation of the bearing 3 in the moving process is avoided.

It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by a difference from other embodiments, and identical and similar parts between the embodiments are referred to each other.

The down-the-hole hammer guide device provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. A down-the-hole hammer guide, comprising:

a drill rod;

the body (1) is sleeved on the periphery of the drill rod in a rotatable manner relative to the drill rod;

the supporting device (2) is arranged on the body (1) and can stretch out and draw back along the radial direction of the drill rod, and the supporting device (2) contacts with the inner wall of the drilling hole (101) when extending out.

2. A down-the-hole hammer guide according to claim 1, wherein the outer periphery of the body (1) is provided with a groove, and the support device (2) is a support cylinder embedded in the groove.

3. A down-the-hole hammer guide according to claim 2, wherein the body (1) is provided with at least one groove group along its axial direction, each groove group comprising at least three of the grooves distributed along the same circumference of the body (1).

4. A down-the-hole hammer guide according to any one of claims 1-3, wherein the body (1) and the drill rod are connected by means of a bearing (3).

5. The down-the-hole hammer guiding device according to claim 4, wherein the drill rod comprises a transition drill rod (41), a bundling hammer (5) is connected to a drill bit end of the transition drill rod (41), a first sleeve (6) is sleeved outside the transition drill rod (41), and the first sleeve (6) is used for axially limiting the bearing (3).

6. A down-the-hole hammer guide according to claim 5, further comprising a second sleeve (7) connected to the transition drill rod (41), the second sleeve (7) being connected to the first sleeve (6).

7. A down-the-hole hammer guide according to claim 6, wherein the second sleeve (7) comprises:

the first connecting part is in threaded connection with the inner wall of the transition drill rod (41);

the second connecting part is vertically connected with the first connecting part, extends out of the end face of the transition drill rod (41) and is connected with the first sleeve (6) through a fastener (8).

8. The down-the-hole hammer guiding device according to claim 5, characterized in that the drill rod further comprises a connecting rod (42), the connecting rod (42) is connected with the transition drill rod (41), a third sleeve (9) is sleeved outside the connecting rod (42), and the third sleeve (9) is used for axially limiting the bearing (3).

9. A down-the-hole hammer guide according to claim 4, wherein the body (1) is provided with a first limiting boss (11) for axially limiting the bearing (3).

10. A down-the-hole hammer guide according to claim 4, characterized in that the outer peripheral part of the drill rod is provided with a second limiting boss (421) for axially limiting the bearing (3).