CN211598521U

CN211598521U - Drill for hammer and hammer

Info

Publication number: CN211598521U
Application number: CN202020167931.1U
Authority: CN
Inventors: 董全文; 张飞
Original assignee: XUANHUA SUPERMAN DTH MACHINERY CO Ltd
Current assignee: XUANHUA SUPERMAN DTH MACHINERY CO Ltd
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2020-09-29
Anticipated expiration: 2030-02-13

Abstract

The utility model provides a drill bit for an impactor and the impactor, belonging to the technical field of impact tools, comprising a drill bit, a limit snap ring and a fixed structure, wherein the outer side surface of the drill bit is provided with a clamping groove; the limiting snap ring is sleeved on the drill rod in a sliding manner; a first clamping portion and a second clamping portion are arranged on the inner wall of the limiting clamping ring, the first clamping portion is used for being connected with the front connector, and the second clamping portion is clamped with the clamping groove; the fixing structure is sleeved outside the limiting snap ring and used for fixing the limiting snap ring, when the drill bit is impacted by high-pressure gas, the drill bit slides between the first clamping part and the second clamping part and is limited by the second clamping part, so that the drill bit is prevented from being separated from the front connector; when the drill bit needs to be replaced, the fixing structure and the limiting clamping ring are directly disassembled, and the drill bit can be taken down from the front joint without disassembling the front joint, so that the operation steps are simplified, time and labor are saved, and the working strength of workers is reduced.

Description

Drill for hammer and hammer

Technical Field

The utility model belongs to the technical field of percussion tool, more specifically say, relate to a drill bit and impacter for impacter.

Background

The reamer can widen the drilled hole formed in rock soil or rocks, is widely applied to mine drilling, geological exploration and foundation buildings, and is used for replacing a drill bit according to different geological conditions in the geological exploration process. At present when changing the drill bit, need rotate the front connector earlier, take off the front connector from the outer tube of impacter, then change drill bit work, this kind of mode operation is complicated, wastes time and energy, has improved staff's working strength.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drill bit and impacter for impacter to the operation of the change drill bit that exists among the solution prior art wastes time and energy, has improved staff's working strength's technical problem.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a drill for a percussive tool, comprising:

the outer side surface of the drill bit is provided with a clamping groove;

the limiting clamp ring is sleeved on the drill rod in a sliding manner; the inner wall of the limiting clamp ring is provided with a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion extend towards the center and are arranged at intervals, the first clamping portion is used for being connected with a front connector, and the second clamping portion is clamped with the clamping groove;

and the fixing structure is sleeved outside the limiting snap ring and used for fixing the limiting snap ring.

As another embodiment of the present application, the fixing structure includes:

the outer side surface of the fixing ring is provided with a first connecting hole penetrating through the fixing ring; a second connecting hole corresponding to the first connecting hole is formed in the outer side surface of the limiting clamp ring, and the second connecting hole is located in the side wall of the limiting clamp ring;

and the positioning pin penetrates through the first connecting hole and the second connecting hole and is used for fixing the limiting snap ring and the fixing ring.

As another embodiment of this application, gu fixed ring with spacing snap ring is split type structure, first connecting hole passes respectively split type simultaneously gu fixed ring, the second connecting hole passes respectively split type simultaneously spacing snap ring.

As another embodiment of the present application, the second connection hole corresponds to the first engaging portion.

As another embodiment of the present application, the bit comprises:

an impact head;

the connecting rod is arranged at one end of the impact head, and a limiting flange used for being installed between the first clamping part and the second clamping part is arranged on the outer side surface of the connecting rod; the clamping groove is located on the connecting rod and located between the limiting flange and the impact head.

As another embodiment of the application, one end of the limiting flange, which is far away from the impact head, is provided with a mounting surface for mounting and connecting with a front connector.

As another embodiment of the application, a straight hole for exhausting is arranged on the drill bit, and the length direction of the straight hole is consistent with the length direction of the drill bit.

The utility model provides a drill bit for impacter's beneficial effect lies in: compared with the prior art, the drill bit for the impacter is used by firstly installing the front joint into the outer sleeve, then installing the drill bit into the front joint, sleeving the drill bit on the limiting snap ring, clamping the first clamping part on the front joint, clamping the second clamping part in the clamping groove and fixing the limiting snap ring by the fixing structure; when the high-pressure gas impacts the drill bit, the drill bit slides between the first clamping part and the second clamping part, and the second clamping part limits the drill bit, so that the drill bit is prevented from being separated from the front connector; when the drill bit needs to be replaced, the fixing structure and the limiting clamping ring are directly disassembled, and the drill bit can be taken down from the front joint without disassembling the front joint, so that the operation steps are simplified, time and labor are saved, and the working strength of workers is reduced.

Another object of the present invention is to provide an impactor, including a drill bit for an impactor as defined above.

As another embodiment of the present application, the impactor further comprises:

the outer side surface of the front connector is provided with an annular groove which is used for being clamped with the first clamping part.

The utility model provides an impacter, owing to adopted foretell drill bit for the impacter, consequently, when the drill bit needs to be changed, directly dismantle fixed knot structure and spacing snap ring, with the bore bit in the past connect take off can, need not to pull down the front connector, simplified operating procedure, labour saving and time saving has reduced staff's working strength.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a drill bit for an impactor according to an embodiment of the present invention;

fig. 2 is a schematic connection diagram of the limiting snap ring and the fixing ring provided by the embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1. a drill bit; 11. a card slot; 12. an impact head; 13. a connecting rod; 131. a limiting flange; 132. a mounting surface; 14. a straight hole; 2. a limit snap ring; 21. a first clamping part; 22. a second clamping part; 23. a second connection hole; 3. a fixed structure; 31. a fixing ring; 311. a first connection hole; 32. positioning pins; 4. a front joint; 41. an annular groove.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2, a drill bit for an impactor according to the present invention will now be described. A drill bit for an impactor comprises a drill bit 1, a limiting snap ring 2 and a fixing structure 3, wherein a clamping groove 11 is formed in the outer side surface of the drill bit 1; the limiting snap ring 2 is sleeved on the drill bit 1 in a sliding manner; the inner wall of the limiting clamp ring 2 is provided with a first clamping portion 21 and a second clamping portion 22 which extend towards the center and are arranged at intervals, the first clamping portion 21 is used for being connected with the front connector 4, and the second clamping portion 22 is clamped with the clamping groove 11; the fixing structure 3 is sleeved outside the limit snap ring 2 and used for fixing the limit snap ring 2.

Compared with the prior art, the drill bit for the impacter has the advantages that when the drill bit is used, the front joint 4 is installed in the outer sleeve, the drill bit 1 is installed in the front joint 4, the limiting snap ring 2 is sleeved on the drill bit 1, the first clamping portion 21 is clamped on the front joint 4, the second clamping portion 22 is clamped in the clamping groove 11, and the limiting snap ring 2 is fixed by the fixing structure 3; when high-pressure gas impacts the drill bit 1, the drill bit 1 slides between the first clamping portion 21 and the second clamping portion 22, the second clamping portion 22 limits the drill bit 1, and the drill bit 1 is prevented from being separated from the front connector 4; when the drill bit needs to be replaced, the fixing structure 3 and the limiting clamping ring 2 are directly disassembled, and the drill bit 1 can be taken down from the front connector 4 without disassembling the front connector 4, so that the operation steps are simplified, time and labor are saved, and the working strength of workers is reduced.

The limiting snap ring 2 is of a split structure, can be buckled together by two semi-rings and installed on the drill bit 1, and is limited between the upper groove wall of the clamping groove 11 by the second clamping part 22 installed in the clamping groove 11, namely when the drill bit 1 moves, the upper groove wall of the clamping groove 11 collides with the second clamping part 22. A sliding groove for slidably connecting with the limiting flange 131 is formed between the first clamping portion 21 and the second clamping portion 22.

Referring to fig. 1 and 2, as an embodiment of the drill bit for the percussion device of the present invention, the fixing structure 3 includes a fixing ring 31 and a positioning pin 32, and a first connecting hole 311 is formed on an outer side surface of the fixing ring 31 and penetrates through the fixing ring 31; a second connecting hole 23 corresponding to the first connecting hole 311 is formed in the outer side surface of the limiting clamp ring 2, and the second connecting hole 23 is located in the side wall of the limiting clamp ring 2; the positioning pin 32 penetrates through the first connecting hole 311 and the second connecting hole 23 and is used for fixing the limiting snap ring 2 and the fixing ring 31, the second connecting hole 23 is formed in the outer side surface of the limiting snap ring 2, the second connecting hole 23 is not communicated with the inside of the limiting snap ring 2 and is only formed in the outer wall of the limiting snap ring 2, and the fixing ring 31 is sleeved on the outer side of the limiting snap ring 2, so that the first connecting hole 311 penetrates through the outer wall of the fixing ring 31 to be communicated with the inside of the fixing ring 31 and penetrates through the ring wall of the fixing ring 31 on the other side; after the limiting snap ring 2 is sleeved on the outer side surface of the drill bit 1, the fixing ring 31 is sleeved on the side wall of the limiting snap ring 2, the first connecting hole 311 is aligned with the second connecting hole 23, and then the positioning pin 32 penetrates through the first connecting hole 311 and the second connecting hole 23, so that the fixing ring 31 locks the limiting snap ring 2 on the front joint 4. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Please refer to fig. 1 and fig. 2, as the utility model provides a specific implementation of the drill bit for the impacter, fixed ring 31 and spacing snap ring 2 are split type structures, first connecting hole 311 passes each split type fixed ring 31 simultaneously, second connecting hole 23 passes each split type spacing snap ring 2 simultaneously, because drill bit 1 moves between first joint portion 21 and second joint portion 22, consequently need set up spacing snap ring 2 to split type structure, with two split type spacing snap ring 2 butt joint slips in the outside of drill bit 1, then in the outside with two split type fixed ring 31 slips in spacing snap ring 2, use the round pin axle to pass first connecting hole 311 and second connecting hole 23 at last. First connecting hole 311 passes two fixed ring 31 of split type simultaneously, second connecting hole 23 passes two fixed ring 2 of split type simultaneously, after installing split type spacing snap ring 2 and split type fixed ring 31, first connecting hole 311 and second connecting hole 23 correspond, use the round pin axle to pass first connecting hole 311 and second connecting hole 23 at last, both can carry on two split type spacing snap ring 2 spacing, can be spacing with two fixed ring 31 of split type again, and with the help of the spacing connection of two fixed ring 31 of split type, make two connected inseparabler of split type spacing snap ring 2, and then can more stable work.

Referring to fig. 1 and 2, as a specific embodiment of the drill bit for the percussion device of the present invention, the second connecting hole 23 corresponds to the first engaging portion 21, and the first engaging portion 21 is engaged with the annular groove 41 of the front connector 4, so that when the drill bit 1 impacts the second engaging portion 22, the position-limiting snap ring 2 will not displace, and the stable supporting operation can be performed. This kind of mode need guarantee the firm connection between first joint portion 21 and the annular groove 41, consequently with second connecting hole 23 and second joint portion 22 corresponding, second connecting hole 23 is located the outside of spacing snap ring 2, and first joint portion 21 sets up on the inner wall that spacing snap ring 2 corresponds, makes the location effort of locating pin 32 be close to the position of first joint portion 21 and annular groove 41, guarantees stable being connected between spacing snap ring 2 and the front connector 4.

Referring to fig. 1 and 2, as a specific embodiment of the drill bit for the impactor according to the present invention, the drill bit 1 includes an impact head 12 and a connecting rod 13, the connecting rod 13 is disposed at one end of the impact head 12, and a limiting flange 131 for being mounted between the first clamping portion 21 and the second clamping portion 22 is disposed on an outer side surface of the connecting rod; the clamping groove 11 is located on the connecting rod 13 and located between the limiting flange 131 and the impact head 12, high-pressure gas does work on the piston, and the piston impacts on the connecting rod 13 to drive the impact head 12 to act on the ground and on rocks. The clamping groove 11 is arranged on the outer side surface of the connecting rod 13, so that the impact head 12 cannot be influenced by the limiting clamping ring 2 when colliding with the ground and rocks, and can work stably. Set up the limiting flange 131 of outside extension on the lateral surface of connecting rod 13, limiting flange 131 stretches into the sliding tray that forms between first joint portion 21 and the second joint portion 22, increased with the second joint portion 22 between the action face, and then improved the stability of bore bit 1 motion, can not break away from in the front connection 4.

Referring to fig. 1 and 2, as a specific embodiment of the drill bit for the impactor provided by the present invention, the end of the limiting flange 131 far away from the impact head 12 is provided with a mounting surface 132 for mounting and connecting with the front connector 4, and when the end of the connecting rod 13 is inserted into the front connector 4, the mounting surface 132 of the end of the limiting flange 131 far away from the impact head 12 is stably connected with the end surface of the front connector 4, so as to limit one end of the drill bit 1. The interaction force between the front joint 4 and the connecting rod 13 is stable, and the problems of severe damage, abrasion and the like can not occur.

Referring to fig. 1, as a specific embodiment of the drill bit for the percussion device provided by the present invention, the drill bit 1 is provided with a straight hole 14 for exhausting air, the length direction of the straight hole 14 is consistent with the length direction of the drill bit 1, and the straight hole 14 is provided for exhausting air in the percussion device, so that the air generated by downward impact of the piston directly passes through the straight hole 14 to be exhausted without generating radial acting force with the drill bit 1, thereby ensuring that the drill bit 1 stably performs impact motion, and reducing the interaction force between the drill bit 1 and the front joint 4.

The embodiment of the present invention further provides an impactor, wherein the impactor comprises any one of the drill bits for the impactor.

The utility model provides an impacter, owing to adopted foretell drill bit for the impacter, consequently, when the drill bit needs to be changed, directly dismantle fixed knot constructs 3 and spacing snap ring 2, with bore bit 1 from the front connector 4 take off can, need not to pull down front connector 4, simplified operating procedure, labour saving and time saving has reduced staff's working strength.

Please refer to fig. 1 and fig. 2, as a specific embodiment of the impactor provided by the present invention, the impactor further includes a front joint 4, an annular groove 41 for being connected with the first clamping portion 21 is disposed on the outer side surface of the front joint 4, when the split type spacing snap ring 2 is sleeved on the bit 1, the first clamping portion 21 is assembled into an annular structure and clamped into the annular groove 41, so as to play a certain limiting role for the split type spacing snap ring 2, and prevent the spacing snap ring 2 from being easily separated. The annular groove 41 is arranged on one section of outer wall of the front connector 4 outside the outer sleeve, and when the fixing ring 31 is clamped outside the limiting clamping ring 2, the upper end of the fixing ring 31 is abutted to the front connector 4.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A drill bit for an impactor, comprising:

the outer side surface of the drill bit is provided with a clamping groove;

2. A drill bit for a percussive tool as set forth in claim 1 wherein said securing structure includes:

3. The bit according to claim 2, wherein the fixing ring and the retaining ring are formed in a split structure, the first connecting hole simultaneously penetrates through the split fixing rings, and the second connecting hole simultaneously penetrates through the split retaining rings.

4. The bit for an impactor according to claim 2 wherein said second connecting aperture corresponds to said first snap-fit portion.

5. A drill bit for an impactor according to claim 1 wherein said bit includes:

an impact head;

6. A drill bit for an impactor according to claim 5 wherein the end of the retainer flange remote from the impact head is provided with a mounting surface for mounting connection with a forward connection.

7. A drill bit for an impactor according to claim 1 wherein said bit is provided with a straight bore for exhausting air, the length of said straight bore being aligned with the length of said bit.

8. An impactor comprising a drill bit for an impactor according to any one of claims 1 to 7.

9. The impactor of claim 8, wherein the impactor further comprises: