CN216240401U - Down-the-hole hammer - Google Patents
Down-the-hole hammer Download PDFInfo
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- CN216240401U CN216240401U CN202123142461.7U CN202123142461U CN216240401U CN 216240401 U CN216240401 U CN 216240401U CN 202123142461 U CN202123142461 U CN 202123142461U CN 216240401 U CN216240401 U CN 216240401U
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Abstract
The application discloses down-the-hole impacter, its characterized in that includes: a drill bit; the drill bit clamping sleeve, the piston and the joint are coaxially arranged with the drill bit and are sequentially connected with the drill bit; the outer cylinder is sleeved on the outer side of the piston and connected with the drill rod clamping sleeve and the joint; the outer diameter of the guide assembly is smaller than that of the drill bit, and at least one group of guide assemblies are arranged on the outer circumferential surface of the outer cylinder. The application provides a down-the-hole impacter compares in prior art, can improve the straightness accuracy of drilling, avoids the impacter to take place the risk of sticking a drill in drilling process to satisfy the requirement of pumping well, foundation pile hole, oil well and rescue hole to the hole straightness accuracy of speedily carrying out rescue work.
Description
Technical Field
The application relates to the technical field of pneumatic rock drilling tools, in particular to a down-the-hole hammer.
Background
With the development of industry, various infrastructure projects are continuously promoted. The down-the-hole hammer is widely used as drilling equipment in engineering construction projects such as capital constructions, wells, mines, hydropower stations, ports, roads, tunnels and the like, and is used for digging pile foundation holes, blast holes and the like. The down-the-hole hammer provides high-pressure water or compressed air into the hammer through a compressor, drives a piston inside the hammer to reciprocate at high speed, the piston strikes a drill bit once and again through the reciprocating motion, rock breaking is realized through alloy teeth at the front end of the drill bit, rock slag generated in the rock breaking process is discharged by the high-pressure water or high-pressure gas through a slag discharge channel of the hammer, and finally rock drilling and hole forming are realized.
A prior art down-the-hole impactor is shown in fig. 1 and includes: the high-pressure gas is input into the impactor through the inner hole of the joint 300, the piston 200 is driven to reciprocate up and down to strike the drill bit 100, and then the rock is crushed through the alloy on the drill bit 100, so that the rock drilling and the hole forming are realized. Because the outer diameter of the drill bit 100 in the prior art is much larger than that of the impacter, and the size of a drilled hole is far larger than that of the impacter, the impacter is easy to deflect in the hole, meanwhile, the drill bit can also deflect due to instability of rock strata in the rock drilling process, and finally the hole straightness deflects, the deeper the drilled hole is, the larger the deflection is, and if the straightness deviation is too large, the impacter can not work in a drilling process, and the straightness of the drilled hole does not meet the use requirement.
Therefore, a down-the-hole hammer is needed to improve the straightness of the drilled hole and avoid the risk of jamming of the hammer during the drilling process.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides a down-the-hole impacter, can improve the straightness accuracy of drilling, avoids the impacter to take place the risk of sticking a drill in drilling process, satisfies the requirement of pumping well, foundation pile hole, oil well and rescue hole to the hole straightness accuracy of speedily carrying out rescue work.
The technical scheme provided by the application is as follows:
a down-the-hole impactor comprising: a drill bit;
the drill bit clamping sleeve, the piston and the joint are coaxially arranged with the drill bit and are sequentially connected with the drill bit;
the outer cylinder is sleeved on the outer side of the piston and connected with the drill rod clamping sleeve and the joint;
and at least one group of guide assemblies arranged on the outer circumferential surface of the outer cylinder, wherein the outer diameter of each guide assembly is smaller than that of the drill bit.
Preferably, the guide assembly comprises:
on the outer periphery of outer jar, follow the direction muscle that outer jar length direction set up, the direction muscle is provided with three groups at least, just the direction muscle winds the outer periphery evenly distributed of outer jar.
Preferably, the guide assembly further comprises:
and the hard alloy tooth assembly is arranged on the outer surface of the guide rib.
Preferably, the cemented carbide tooth assembly comprises:
the number of the hard alloy teeth is at least 3, and the hard alloy teeth are arranged at intervals along the length direction of the guide rib.
Preferably, the guide rib is in a straight strip shape or a spiral shape.
Preferably, the outer diameter of the steering assembly is 1mm to 6mm smaller than the outer diameter of the drill bit.
Preferably, the outer cylinder and the drill rod clamping sleeve and the outer cylinder and the joint are detachably connected.
Preferably, the guide assemblies are arranged in at least two groups, and at least one group of the guide assemblies is arranged on the outer circumferential surface of the drill collar.
Preferably, the guide members are provided in at least two sets, and at least one set of the guide members is provided on the outer circumferential surface of the joint.
Preferably, the guide assemblies are arranged in at least three groups, at least one group of guide assemblies is arranged on the outer circumferential surface of the drill collar, and at least one group of guide assemblies is arranged on the outer circumferential surface of the joint.
The utility model provides a down-the-hole hammer, which is provided with a drill bit, an outer cylinder and a guide assembly, wherein a drill clamping sleeve, a piston and a connector are coaxially arranged with the drill bit, the drill clamping sleeve, the piston and the connector are sequentially connected with the drill bit, the outer cylinder is arranged on the outer side of the piston, two ends of the outer cylinder are respectively connected with the drill clamping sleeve and the connector, the outer diameter of the guide assembly is smaller than the outer diameter of the drill bit, at least one guide assembly is arranged on the outer circumferential surface of the outer cylinder, the radial positioning of the hammer in a hole is realized through the guide assembly, the hammer is prevented from generating deflection, and the outer diameter of the guide assembly is smaller than the outer diameter of the drill bit, so that a gap exists between the outer circumferential surface of the guide assembly and the hole, and the hammer is prevented from being incapable of drilling in the rock drilling process. Therefore, compared with the prior art, the down-the-hole impactor disclosed by the embodiment of the utility model can improve the straightness of the drilled hole, avoid the risk of drill sticking of the impactor in the drilling process, and meet the requirements of the drilling well, the foundation pile hole, the petroleum well and the emergency rescue hole on the straightness of the hole.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic illustration of a prior art down-the-hole impactor;
FIG. 2 is a schematic illustration of one configuration of a down-the-hole impactor provided in an embodiment of the utility model;
FIG. 3 is a schematic structural diagram of an outer cylinder provided in an embodiment of the present invention;
FIG. 4 is another schematic illustration of a down-the-hole impactor provided in accordance with embodiments of the utility model;
fig. 5 is a schematic structural diagram of a drill collar according to an embodiment of the present invention.
Prior art reference numerals: 100. a drill bit; 200. a piston; 300. a joint; 400. a rock layer.
The reference numbers of the present application: 1. a drill bit; 2. a drill rod clamping sleeve; 3. a piston; 4. a joint; 5. an outer cylinder; 6. a guide assembly; 61. a guide rib; 62. a cemented carbide tooth assembly; 7. a rock layer.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
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 application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
Embodiments of the present invention are written in a progressive manner.
Referring to fig. 2 to 5, an embodiment of the present invention provides a down-the-hole hammer, including: a drill bit 1; the drill bit clamping sleeve 2, the piston 3 and the joint 4 are coaxially arranged with the drill bit 1 and sequentially connected with the drill bit 1; the outer cylinder 5 is sleeved on the outer side of the piston 3 and is connected with the drill rod clamping sleeve 2 and the joint 4; a guide assembly 6, the guide assembly 6 having an outer diameter smaller than that of the drill bit 1, at least one guide assembly 6 being provided on the outer surface of the outer cylinder 5.
A down-the-hole hammer of the prior art is shown in fig. 1, and comprises a drill bit 100, a piston 200 and a joint 300, wherein high-pressure gas is input into the hammer through an inner hole of the joint 300, and drives the piston 200 to reciprocate up and down to strike the drill bit 100, and then rock is crushed through alloy on the drill bit 100, so that rock drilling and hole forming are realized. Because the outer diameter of the drill bit 100 in the prior art is much larger than that of the impactor, and the size of the hole generated by the drill bit 100 is far larger than that of the impactor, the impactor is easy to deflect in the hole, meanwhile, due to instability of a hole rock stratum, the rock drilling process of the drill bit 100 can also deflect, and finally the straightness of the hole deflects, the deeper the drilled hole is, the larger the deflection is, and if the deflection degree of the hole is too large, the drilling tool can not work in a stuck mode, and the straightness of the drilled hole does not meet the use requirement.
The down-the-hole hammer provided by the utility model is provided with the drill bit 1, the outer cylinder 5 and the guide assembly 6, wherein the drill bit sleeve 2, the piston 3 and the joint 4 are coaxially arranged with the drill bit 1, the drill bit sleeve 2, the piston 3 and the joint 4 are sequentially connected with the drill bit 1, the outer cylinder 5 is sleeved outside the piston 3, and both ends of the outer cylinder 5 are respectively connected with the drill rod clamping sleeve 2 and the joint 4, the outer diameter of the guide assembly 6 is smaller than that of the drill bit 1, and at least one guide assembly 6 is arranged on the outer circumferential surface of the outer cylinder 5, the guide assembly 6 is arranged on the outer circumferential surface of the outer cylinder 5, the radial positioning of the impactor in the hole is realized through the guide assembly 6, the impactor is prevented from generating deflection, the outer diameter of the guide assembly 6 is smaller than that of the drill bit 1, so that a gap exists between the outer circumferential surface of the guide assembly 6 and the hole, and the condition that the drill cannot work due to jamming of the impactor in the rock drilling process is prevented. Therefore, compared with the prior art, the down-the-hole impactor disclosed by the embodiment of the utility model can improve the straightness of the drilled hole, avoid the risk of drill sticking of the impactor in the drilling process, and meet the requirements of the drilling well, the foundation pile hole, the petroleum well and the emergency rescue hole on the straightness of the hole.
In the above structure, as a more preferred embodiment, the guiding assembly 6 includes the guiding ribs 61, wherein the guiding ribs 61 are disposed on the outer circumferential surface of the outer cylinder 5, at least three groups of guiding ribs 61 are disposed, the guiding ribs 61 are uniformly distributed around the outer circumferential surface of the outer cylinder 5, the outer diameter of the guiding ribs 61 is smaller than that of the drill bit 1 by 1mm to 6mm, the guiding ribs on the outer cylinder 5 play a guiding role, so that the radial positioning of the impactor in the hole is realized, the impactor is prevented from generating deflection, and the straightness of drilling of the impactor can be significantly improved through improvement.
The guiding ribs 61 in the embodiment of the present invention are preferably arranged in 3 to 8 groups according to the diameter of the outer cylinder 5, and the guiding effect is better.
As a more preferable group of embodiments, the guide assembly 6 in the embodiment of the present invention further includes a cemented carbide tooth assembly 62, wherein the cemented carbide tooth assembly 62 is disposed on the outer surface of the guide rib 61, and the wear resistance of the guide rib is further increased by disposing the cemented carbide tooth assembly 62.
Furthermore, according to the width dimension of the guiding rib, the cemented carbide tooth assemblies 62 in the embodiment of the utility model may be arranged in one group or at least two groups, when the width of the guiding rib is larger, in order to ensure the wear resistance of the guiding rib, the cemented carbide tooth assemblies 62 are arranged in at least two groups, and the cemented carbide tooth assemblies 62 are arranged on the outer surface of the guiding rib 61 and are arranged at intervals along the width direction of the guiding rib 61.
As a more preferable embodiment, the cemented carbide tooth assembly 62 in the embodiment of the present invention includes cemented carbide teeth, wherein at least 3 cemented carbide teeth are provided, and the cemented carbide teeth are provided at intervals along the length direction of the guide rib 61.
In the above structure, the sectional shape of the cemented carbide tooth in the embodiment of the present invention may be a polygon or a circle.
In the above structure, in order to ensure the guiding performance of the outer cylinder 5, the guiding rib may be provided in a straight strip shape, and the processing cost of the guiding rib is lower. As another embodiment, the guide ribs in the embodiment of the present invention are spirally arranged around the outer surface of the outer cylinder 5, and the slag discharge gap is formed between the adjacent guide ribs and the hole wall, so that the slag discharge is performed through the slag discharge gap.
In the above structure, as a more preferable embodiment, the guide rib and the outer cylinder in the embodiment of the present invention are integrally formed, or the guide rib and the outer cylinder in the embodiment of the present invention are connected by welding.
In the above structure, as a more preferable mode, the outer diameter of the guide member 6 in the embodiment of the present invention is smaller than the outer diameter of the drill bit 1 by 1mm to 6mm, the outer diameter of the guide member 6 is smaller than the outer diameter of the drill bit 1, so that a gap exists between the hole generated by the drill bit 1 during drilling and the outer diameter of the guide assembly 6, the gap between the guide assembly 6 and the hole is prevented from being too small, the impactor is blocked and cannot work normally, in the above structure, the size of the gap in the embodiment of the present invention is determined according to the size and depth of the drill hole of the impactor, if the hole of the drill hole of the impactor is large or deep, the gap between the guide assembly 6 and the hole is slightly larger, but the gap cannot be too large, the gap is too large, the steering assembly loses its steering effect and in order to enable the impactor to have both steering and rock drilling functions, the steering assembly 6 in the embodiment of the utility model has an outer diameter 1mm to 6mm smaller than the outer diameter of the drill bit 1.
In the above structure, as a more preferable embodiment, the outer cylinder 5 and the drill collar 2, and the outer cylinder 5 and the joint 4 in the embodiment of the present invention are detachably connected, so that when the outer cylinder 5 is damaged, the outer cylinder 5 is conveniently replaced.
In the above structure, as another embodiment, the guide members 6 in the embodiment of the present invention are provided in at least two sets, and at least one guide member 6 is provided on the outer circumferential surface of the bayonet sleeve 2.
In the above structure, as a third embodiment, at least two sets of the guide members 6 are provided, and at least one guide member 6 is provided on the outer circumferential surface of the joint 4. In the above structure, as a more preferable embodiment, the guide members 6 in the embodiment of the present invention are provided in at least three sets, and at least one guide member 6 is provided on the outer circumferential surface of the bayonet sleeve 2, and at least one guide member 6 is provided on the outer circumferential surface of the joint 4. Through setting up the multiunit and leading positive subassembly, realize the multiunit radial positioning of impacter in the hole, prevent that the impacter from producing beat can show the straightness accuracy that improves the impacter drilling.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A down-the-hole impactor, comprising: a drill (1);
the drill bit clamping sleeve (2), the piston (3) and the joint (4) are coaxially arranged with the drill bit (1) and are sequentially connected with the drill bit (1);
the outer cylinder (5) is sleeved on the outer side of the piston (3) and is connected with the drill rod clamping sleeve (2) and the connector (4);
at least one group of guide assemblies (6) arranged on the outer circumferential surface of the outer cylinder (5), wherein the outer diameter of each guide assembly (6) is smaller than that of the drill bit (1).
2. A down-the-hole impactor according to claim 1,
the guide assembly (6) comprising:
on the outer periphery of outer jar (5), follow direction muscle (61) that outer jar (5) length direction set up, direction muscle (61) are provided with three groups at least, just direction muscle (61) wind the outer periphery evenly distributed of outer jar (5).
3. A down-the-hole impactor according to claim 2,
the guide assembly (6) further comprises:
and a cemented carbide tooth assembly (62) disposed on an outer surface of the guide rib (61).
4. A down-the-hole impactor according to claim 3,
the cemented carbide tooth assembly (62) comprising:
the number of the hard alloy teeth is at least 3, and the hard alloy teeth are arranged at intervals along the length direction of the guide rib (61).
5. A down-the-hole impactor according to claim 4,
the guide rib (61) is straight strip-shaped or spiral.
6. A down-the-hole impactor according to any one of claims 1 to 5,
the outer diameter of the guide assembly (6) is 1mm to 6mm smaller than the outer diameter of the drill bit (1).
7. A down-the-hole impactor according to claim 6,
the outer cylinder (5) is detachably connected with the drill rod clamping sleeve (2) and the outer cylinder (5) is detachably connected with the joint (4).
8. A down-the-hole impactor according to any one of claims 1 to 5 and 7,
the guide assemblies (6) are at least provided with two groups, and at least one group of guide assemblies (6) is arranged on the outer circumferential surface of the drill rod clamping sleeve (2).
9. A down-the-hole impactor according to any one of claims 1 to 5 and 7,
the guide assemblies (6) are at least provided with two groups, and at least one group of guide assemblies (6) are arranged on the outer circumferential surface of the joint (4).
10. A down-the-hole impactor according to any one of claims 1 to 5 and 7,
the guide assemblies (6) are at least provided with three groups, at least one group of guide assemblies (6) is arranged on the outer circumferential surface of the drill rod clamping sleeve (2), and at least one group of guide assemblies (6) is arranged on the outer circumferential surface of the joint (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123142461.7U CN216240401U (en) | 2021-12-14 | 2021-12-14 | Down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123142461.7U CN216240401U (en) | 2021-12-14 | 2021-12-14 | Down-the-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216240401U true CN216240401U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123142461.7U Active CN216240401U (en) | 2021-12-14 | 2021-12-14 | Down-the-hole hammer |
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|---|---|
| CN (1) | CN216240401U (en) |
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2021
- 2021-12-14 CN CN202123142461.7U patent/CN216240401U/en active Active
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