CN216008412U - Rock drill shank - Google Patents
Rock drill shank Download PDFInfo
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- CN216008412U CN216008412U CN202121251018.0U CN202121251018U CN216008412U CN 216008412 U CN216008412 U CN 216008412U CN 202121251018 U CN202121251018 U CN 202121251018U CN 216008412 U CN216008412 U CN 216008412U
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Abstract
The utility model relates to a rock drill shank, which comprises a shank body, wherein six side walls of the shank body are provided with grooves, and a plurality of grooves are of arc structures; a rubber block is fixedly arranged in each groove, the lower end part of each rubber block is matched with the groove structure, and the upper end part of each rubber block protrudes out of the groove; the drill bit shank body is internally provided with a water delivery hole along the axial direction, one end of the drill bit shank body is provided with a mounting hole for mounting a water needle, and the water delivery hole is communicated with the mounting hole. Compared with the prior art, the utility model can reduce the rotation impact in the torque transmission of the drill rod, reduce the impact damage caused by reverse driving and prolong the service life of the drill rod tail sleeve and the drill rod.
Description
Technical Field
The utility model relates to the technical field of rock drills, in particular to a rock drill shank of a rock drill.
Background
The hydraulic rock drill is special equipment applied to the industries of mining, metallurgy and the like, and is used for drilling on high-hardness and brittle materials such as ores and rocks; or for assembling a taphole drilling machine. The device has the characteristics of high impact power, high energy utilization rate, easiness in realizing automatic control and the like.
In the process of drilling by the hydraulic rock drill, the drill sleeve directly contacted with the drill rod is subjected to reverse impact damage, so that the drill sleeve becomes a vulnerable part of a rock drill system, and the problem is necessarily solved.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the utility model aims to provide a rock drill shank capable of reducing the reverse impact damage and prolonging the service life.
The technical scheme for solving the technical problems is as follows: the rock drill shank comprises a shank body, wherein grooves are formed in six side walls of the shank body, and the grooves are of arc-shaped structures; a rubber block is fixedly arranged in each groove, the lower end part of each rubber block is matched with the groove structure, and the upper end part of each rubber block protrudes out of the groove;
the drill bit shank body is internally provided with a water delivery hole along the axial direction, one end of the drill bit shank body is provided with a mounting hole for mounting a water needle, and the water delivery hole is communicated with the mounting hole.
The utility model has the beneficial effects that: the rubber block is utilized to reduce the rotary impact in the torque transmission of the drill rod, reduce the abrasion of the hexagonal inner hole of the drill rod sleeve, enable the drill rod body to be connected with the drill rod sleeve more tightly, reduce the impact damage caused by reverse beating and prolong the service life of the drill rod sleeve and the drill rod.
On the basis of the technical scheme, the utility model can be further improved as follows.
Furthermore, a plurality of chutes are arranged at the bottom of the groove and are sequentially arranged; the lower end of the rubber block extends into the plurality of inclined grooves.
The beneficial effect of adopting the further scheme is that: the plurality of chutes can increase the contact area of the rubber block and the drill shank body, increase the friction force and improve the stability of the rubber block.
Further, the mounting hole comprises a first hole body and a second hole body, and the first hole body is arranged at one end of the second hole body and communicated with the second hole body; the inner diameter of the first hole body is larger than that of the second hole body; the first hole body is internally and fixedly provided with a sealing ring, and the inner diameter of the sealing ring is smaller than that of the second hole body.
The beneficial effect of adopting the further scheme is that: utilize the sealing washer to the sealed of squirt cut, promote the leakproofness, avoid the cooling water to influence hydraulic rock drill's life.
Furthermore, the sealing ring is close to be provided with the annular in the tip of second hole body, the annular with the internal diameter of second hole body is unanimous.
The beneficial effect of adopting the further scheme is that: make the sealing washer more stable in first hole body, prolong the life of sealing washer.
Further, the rubber block protrudes out of the groove by less than 1 mm.
The beneficial effect of adopting the further scheme is that: the assembly of the drill rod can be prevented from being influenced, and the rotary impact in the torque transmission of the drill rod can be reduced.
Drawings
FIG. 1 is a schematic view of a shank of a rock drill according to the present invention;
FIG. 2 is a schematic structural view of a rock drill shank removing rubber block of the present invention;
fig. 3 is an enlarged schematic view of a portion a of fig. 2.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the drill bit shank comprises a drill bit shank body, 1.1 grooves, 1.2 rubber blocks, 1.3 water conveying holes, 1.4 mounting holes, 1.5 inclined grooves;
1.4.1, a first hole body, 1.4.2, a second hole body, 1.4.3, a sealing ring, 1.4.4 and a ring groove.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 3, a rock drill shank comprises a shank body 1, wherein six side walls of the shank body 1 are provided with grooves 1.1, and a plurality of grooves 1.1 are in arc-shaped structures; a rubber block 1.2 is fixedly arranged in each groove 1.1, the lower end part of each rubber block 1.2 is structurally matched with the groove 1.1, and the upper end part of each rubber block 1.2 protrudes out of the groove 1.1;
a water delivery hole 1.3 is formed in the drill bit shank body 1 along the axial direction of the drill bit shank body, a mounting hole 1.4 for mounting a water needle is formed in one end of the drill bit shank body 1, and the water delivery hole 1.3 is communicated with the mounting hole 1.4.
In the embodiment, the six side walls of the drill bit body 1 are respectively provided with the grooves 1.1, and the grooves 1.1 are respectively of an arc-shaped structure, so that the strength of the drill bit body 1 is ensured; the groove 1.1 is filled with rubber blocks 1.2, so that the rotary impact in the torque transmission of the drill rod is reduced, the abrasion of a hexagonal inner hole of a drill rod sleeve is reduced, the connection between the drill rod sleeve and the drill rod body 1 is more compact, the impact damage caused by reverse striking is reduced, and the service lives of the drill rod sleeve and the drill rod are prolonged; the water needle is further installed through the installation hole 1.4, and cooling water is conveniently led in through the water needle.
In the above embodiment, the bottom of the groove 1.1 is provided with a plurality of chutes 1.5, and the plurality of chutes 1.5 are sequentially arranged; the lower end of the rubber block 1.2 extends into the plurality of chutes 1.5.
A plurality of chutes 1.5 are arranged along the axial direction of the drill bit shank body 1 at equal intervals in sequence, so that the contact area between the rubber block 1.2 and the drill bit shank body 1 can be increased, the friction force is increased, and the stability of the rubber block 1.2 is improved.
In the above embodiment, the mounting hole 1.4 includes the first hole 1.4.1 and the second hole 1.4.2, and the first hole 1.4.1 is disposed at one end of the second hole 1.4.2 and is communicated with the second hole 1.4.2; the inner diameter of the first hole body 1.4.1 is larger than that of the second hole body 1.4.2; the first hole body 1.4.1 internal fixation is provided with sealing washer 1.4.3, the internal diameter of sealing washer 1.4.3 is less than the internal diameter of second hole body 1.4.2.
The aperture of first hole body 1.4.1 and second hole body 1.4.2 all is greater than the aperture of squirt cut, utilizes sealing washer 1.4.3 to the sealed of squirt cut, promotes the leakproofness, avoids the cooling water to influence hydraulic rock drill's life.
In the above embodiment, an annular groove 1.4.4 is provided in the end portion of the sealing ring 1.4.3 close to the second hole body 1.4.2, and the inner diameter of the annular groove 1.4.4 is the same as the inner diameter of the second hole body 1.4.2.
The annular groove 1.4.4 can increase the contact area of cooling water and sealing washer 1.4.3 in the second hole body 1.4.2 for the cooling water produces the effort that has vertical direction to sealing washer 1.4.3, thereby makes sealing washer 1.4.3 more stable in first hole body 1.4.1, prolongs sealing washer 1.4.3's life.
In the above embodiment, the rubber block 1.2 protrudes the groove 1.1 by less than 1mm, which not only can avoid affecting the assembly of the drill rod, but also can reduce the rotation impact in the torque transmission of the drill rod, so that the drill rod shank body 1 and the drill rod sleeve are connected more tightly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A rock drill bore bit, includes bore bit body (1), its characterized in that: grooves (1.1) are formed in six side walls of the drill bit shank body (1), and the grooves (1.1) are of arc-shaped structures; a rubber block (1.2) is fixedly arranged in each groove (1.1), the lower end part of each rubber block (1.2) is structurally matched with the groove (1.1), and the upper end part of each rubber block (1.2) protrudes out of the groove (1.1);
a water delivery hole (1.3) is formed in the drill bit shank body (1) along the axial direction of the drill bit shank body, a mounting hole (1.4) for mounting a water needle is formed in one end of the drill bit shank body (1), and the water delivery hole (1.3) is communicated with the mounting hole (1.4).
2. A rock drill shank according to claim 1, characterized in that: a plurality of chutes (1.5) are arranged at the bottom of the groove (1.1), and the chutes (1.5) are sequentially arranged; the lower end parts of the rubber blocks (1.2) extend into the plurality of inclined grooves (1.5).
3. A rock drill shank according to claim 1, characterized in that: the mounting hole (1.4) comprises a first hole body (1.4.1) and a second hole body (1.4.2), and the first hole body (1.4.1) is arranged at one end of the second hole body (1.4.2) and is communicated with the second hole body (1.4.2); the inner diameter of the first hole body (1.4.1) is larger than that of the second hole body (1.4.2); the first hole body (1.4.1) is internally fixedly provided with a sealing ring (1.4.3), and the inner diameter of the sealing ring (1.4.3) is smaller than that of the second hole body (1.4.2).
4. A rock drill shank according to claim 1, characterized in that: sealing washer (1.4.3) are close to be provided with annular (1.4.4) in the tip of second hole body (1.4.2), annular (1.4.4) with the internal diameter of second hole body (1.4.2) is unanimous.
5. A rock drill shank according to claim 1, characterized in that: the rubber block (1.2) protrudes out of the groove (1.1) by less than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121251018.0U CN216008412U (en) | 2021-06-04 | 2021-06-04 | Rock drill shank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121251018.0U CN216008412U (en) | 2021-06-04 | 2021-06-04 | Rock drill shank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216008412U true CN216008412U (en) | 2022-03-11 |
Family
ID=80524650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121251018.0U Active CN216008412U (en) | 2021-06-04 | 2021-06-04 | Rock drill shank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216008412U (en) |
-
2021
- 2021-06-04 CN CN202121251018.0U patent/CN216008412U/en active Active
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