CN219888000U

CN219888000U - Vane type structure guide joint and impactor

Info

Publication number: CN219888000U
Application number: CN202321551842.7U
Authority: CN
Inventors: 杨日平; 魏正军; 杨湘龙
Original assignee: Changsha Heijingang Industrial Co Ltd
Current assignee: Changsha Heijingang Industrial Co Ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2023-10-24
Anticipated expiration: 2033-06-16

Abstract

The utility model relates to the field of impactor equipment, in particular to a blade-type structure guide joint and an impactor, wherein the guide joint comprises: the guide vanes are arranged on the mandrel; the guide blades are spirally distributed and connected to the outer circumferential wall of the mandrel to form a centralizing part of the guide joint. Compared with the existing strip-shaped centralizing block for milling and processing the slag discharging through groove, the vane type guide joint has the advantages that the guide vanes are directly connected to the peripheral wall of the mandrel, the processing and manufacturing procedures are simpler, the spiral direction of a plurality of guide vanes distributed in a spiral structure is consistent with the spiral direction of the impactor during drilling, and the impactor is facilitated to stably perform impact drilling operation while the resistance is reduced; in addition, slag discharging channels are arranged among the guide blades distributed in a spiral structure, the impactor impacts the spiral guiding function of the guide blades for slag soil and slag Dan Jingyou generated in drilling operation, the slag soil and slag stones are discharged more smoothly, and the slag discharging efficiency is improved.

Description

Vane type structure guide joint and impactor

Technical Field

The utility model relates to the technical field of impactor equipment, in particular to a blade type structure guide joint and an impactor.

Background

With the development of industry, various infrastructure projects are continuously advancing. The down-the-hole hammer and the drill bit are widely used for perforating operation in engineering construction of mines, hydropower stations, ports, roads, tunnels and the like. The down-the-hole hammer utilizes an air compressor to provide high-pressure compressed air to enter a front cavity and a rear cavity of the hammer to apply work, so that a piston generates high-speed reciprocating motion to impact a drill bit, finally, alloy teeth on the drill bit impact and crush rocks to realize impact drilling operation, and generated rock slag is blown out of the bottom of a hole by high-pressure gas discharged by the hammer, so that hole forming is finally realized. In order to ensure the stability of drilling holes of the impacter, most of the prior impacters are matched with the joint for centralizing to work together, and the centralizing joint is utilized to stabilize the drilling direction so as to reduce the offset and inclination problem in the impacter impact drilling operation. As shown in fig. 1, in the existing centralizing joint, a centralizing part is of an integral structure, and a slag discharging groove and a strip centralizing block are milled by an integral large-diameter mandrel; the integral type bar-shaped centralizing block is heavy in weight, and meanwhile, the milled integral slag discharging through groove and the bar-shaped centralizing block are required to be further polished and ground, so that the milling speed is low, the required polishing and grinding area is large, and the integral processing and manufacturing cost of the centralizing joint is high. In addition, the centralizing joint of the existing centralizing block and centralizing plate structure has the centralizing effect, but has the problem of low slag discharging rate in the drilling process.

Disclosure of Invention

The utility model aims to provide a vane type structure guide joint so as to solve the problems of high manufacturing cost and low slag discharging rate of the existing centralizing joint.

The utility model provides a vane type structure guide joint, which comprises: the guide vanes are arranged on the mandrel;

one end of the mandrel is provided with a first connecting structure, and the other end of the mandrel is provided with a second connecting structure; one end of each guide blade is connected to the outer circumferential wall of the mandrel, and a plurality of guide blades are distributed at intervals along the circumferential direction of the mandrel.

Further, a plurality of guide vanes are connected to the outer circumferential wall of the mandrel in a spiral structure; preferably, the helical direction of the plurality of guide vanes distributed in a helical configuration corresponds to the direction of rotation of the impactor drilling.

Further, one end of the guide vane is welded to the outer circumferential wall of the mandrel, and the end face of the other end of the guide vane is used as a positioning face for abutting against the inner wall of the impact drilling hole.

Further, the guide vane is of a flat plate structure; and a blade mounting groove is formed in the outer circumferential wall of the mandrel, and one end of the guide blade is welded and connected with the blade mounting groove.

Further, the positioning surface is provided with a wear-resistant part, and the wear-resistant part is a plurality of hard alloy teeth arranged on the positioning surface, or the positioning surface is provided with an adaptive wear-resistant layer.

Further, the positioning surface is preferably a smooth curved surface, the wear-resistant layer is paved and covered on the smooth curved surface, and the wear-resistant layer is a tungsten carbide material layer.

Further, one of the first connection structure and the second connection structure is a male thread structure, and the other of the first connection structure and the second connection structure is a female thread structure. Both the pin thread structure and the box thread structure are preferably tapered threads.

Further, dabber periphery wall between first connection structure and the guide vane is equipped with first spanner square mouth structure, and first spanner square mouth structure includes: two first square grooves are correspondingly arranged along the outer circumferential direction of the mandrel.

Further, dabber periphery wall between second connection structure and the guide vane is equipped with second spanner square mouth structure, and second spanner square mouth structure includes: two second square grooves are correspondingly arranged along the outer circumferential direction of the mandrel.

An impactor comprises the vane type structure guide joint and an impactor body; the impactor body is provided with a drill bit end and a drill rod connecting end;

one end of the blade type structure guide joint is directly connected with the drill rod connecting end of the impactor body, or one end of the blade type structure guide joint is connected with the drill rod connecting end of the impactor body through a drill rod.

The technical scheme of the utility model has the following advantages:

the vane-type structure guide joint of the present utility model comprises: the guide vanes are arranged on the mandrel; the guide blades are distributed at intervals along the circumference of the mandrel to form a centralizing part of the guide joint. Compared with the strip-shaped centralizing block for milling and processing the slag discharging through groove, the vane type guide joint has the advantages that the guide vane is directly welded on the peripheral wall of the mandrel, the processing and manufacturing procedures are simpler, and the manufacturing cost is effectively reduced.

The guide joint is characterized in that a plurality of guide blades are preferably connected to the outer circumferential wall of the mandrel in a spiral structure, the spiral direction of the guide blades in the spiral structure is consistent with the spiral direction of the impactor during drilling, so that the impact resistance of drilling is reduced, and the impactor is facilitated to perform impact drilling operation stably; in addition, slag discharging channels are arranged among the guide blades distributed in a spiral structure, the impactor impacts the spiral guiding function of the guide blades for slag soil and slag Dan Jingyou generated in drilling operation, the slag soil and slag stones are discharged more smoothly, and the slag discharging efficiency is improved.

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 to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic diagram of a prior art centralizer joint;

FIG. 2 is a schematic view of a vane-type structural guide joint according to the present utility model;

FIG. 3 is a cross-sectional view of a guide tab of the vane type construction of FIG. 2;

wherein: 10. the mandrel, 20, the righting block, 30 and the slag discharging channel; 11. blade mounting groove 40, guide blade 41, positioning surface 50, first connection structure 60, second connection structure; 70. a first wrench square opening structure, 80 and a second wrench square opening structure.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present utility model, 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.

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 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 is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of a plurality of "a number" is two or more, unless explicitly defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof.

Referring to fig. 2-3, the present utility model provides a vane-type structural guide joint comprising: the guide vanes are arranged on the mandrel; one end of the mandrel is provided with a first connecting structure, and the other end of the mandrel is provided with a second connecting structure; one end of each guide vane is connected with the outer circumferential wall of the mandrel, and a plurality of guide vanes are connected with the outer circumferential wall of the mandrel in a spiral structure. The helical direction of the plurality of guide vanes in a helical configuration corresponds to the direction of rotation of the impactor drilling.

In the scheme, compared with the existing strip-shaped centralizing block for milling and processing the slag discharging through groove, the vane type guide joint has the advantages that the guide vanes are directly connected to the peripheral wall of the mandrel, the processing and manufacturing procedures are simpler, the spiral direction of the guide vanes distributed in a spiral structure is consistent with the spiral direction of the impactor during drilling, and the impactor is stable in impact drilling operation while resistance is reduced; in addition, slag discharging channels are arranged among the guide blades distributed in a spiral structure, the impactor impacts the spiral guiding function of the guide blades for slag soil and slag Dan Jingyou generated in drilling operation, the slag soil and slag stones are discharged more smoothly, and the slag discharging efficiency is improved. The multi-finger three or more of the plurality of guide vanes are provided; in a particularly practical embodiment of the utility model, the number of guide vanes is five, although the number of guide vanes may be designed to be other desired numbers.

As a preferred embodiment, one end of the guide vane is welded to the outer circumferential wall of the spindle, and the end face of the other end of the guide vane serves as a positioning face for abutting contact with the inner wall of the percussive drill hole.

Preferably, the guide vane is of a flat plate structure; and a blade mounting groove is formed in the outer circumferential wall of the mandrel, and one end of the guide blade is welded and connected with the blade mounting groove. The mandrel and the guide vane are easy to obtain materials, the guide vane is connected to the outer wall of the mandrel in a welding mode, the machining and manufacturing are simple, and the manufacturing cost is relatively low while the production and manufacturing efficiency of the guide joint is improved.

As a preferred embodiment, the positioning surface is provided with wear-resistant parts, which are a plurality of cemented carbide teeth arranged on the positioning surface, or the positioning surface is provided with an adaptive wear-resistant layer. Preferably, the hard alloy teeth are made of alloy materials with HRC60 or more; more preferably, the positioning surface is preferably a smooth curved surface, the wear-resistant layer is paved and covered on the smooth curved surface, and the wear-resistant layer is a tungsten carbide material layer. In the embodiment, the end face of the other end of the guide blade is provided with the tungsten carbide material wear-resistant layer, and the wear-resistant layer is contacted with the inner wall of the impact hole, so that the end face abrasion of the guide blade is effectively reduced, and the service life is prolonged.

As a preferred embodiment, one of the first and second connection structures is a male threaded structure and the other of the first and second connection structures is a female threaded structure. Both the pin thread structure and the box thread structure are preferably tapered threads. It should be noted that the male thread structure and the female thread structure are external threads and internal threads. One of the first connecting structure and the second connecting structure is connected with the impactor, the mandrel is provided with an axial channel extending along the axial direction of the mandrel, the axial channel can be used as an air inlet channel, one end of the axial channel is used for communicating a compressed air source, the other end of the axial channel is communicated with an air inlet channel of the impactor, and compressed air is supplied to the interior of the impactor so as to enable a piston in the impactor to reciprocate to impact; the compressed air source may be a compressor device; specifically, the other of the first connection structure and the second connection structure is connected with a drill rod, the drill rod is provided with an axial air passage, and the drill rod is communicated with the compressor equipment.

As a preferred embodiment, the outer peripheral wall of the mandrel between the first connecting structure and the guide vane is provided with a first wrench square opening structure, and the first wrench square opening structure comprises: two first square grooves are correspondingly arranged along the outer circumferential direction of the mandrel. Two correspond the joint of the first square groove convenient to spanner that sets up, and then screw up the realization that can be convenient through the spanner and screw up the installation and unscrew the dismantlement of screwing up of guide joint.

The dabber periphery wall between second connection structure and the guide vane is equipped with second spanner square mouth structure, and second spanner square mouth structure includes: two second square grooves are correspondingly arranged along the outer circumferential direction of the mandrel. The second square groove that two corresponds settings also can be used for the joint of spanner, and then screw up the realization that twists up installation and unscrewing that twists up that can be convenient through the spanner and dismantle.

The utility model also provides an impactor comprising the vane type structure guide joint and an impactor body; the impactor body is provided with a drill bit end and a drill rod connecting end; one end of the blade type structure guide joint is directly connected with the drill rod connecting end of the impactor body, or one end of the blade type structure guide joint is connected with the drill rod connecting end of the impactor body through a drill rod.

In the impact drilling operation of the impactor, the guide joint is connected to the drill rod connecting end of the impactor body, so that the guide joint has the effects of centralizing and guiding, and is beneficial to the stable impact drilling operation of the impactor body; in addition, along with the drilling stroke of the required impact drilling of the impactor, a plurality of guide joints can be arranged for guide and centralization, the drill rod at the rear end of the first guide joint (the guide joint closest to the end of the impactor body) can be connected with the guide joint again, and the impactor body, the guide joint, the drill rod and the like are orderly arranged and connected according to the required drilling stroke, so that centralization guide impact drilling of each position section in the drilling stroke of the impactor body is effectively ensured, and drilling deviation is effectively reduced.

It should be noted that the impact breaking principle of the impactor applying impact refers to the prior art. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. 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 utility model 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

1. A vane-type structural guide joint, comprising: the guide vanes are arranged on the mandrel;

2. The blade form guide joint according to claim 1, wherein a plurality of guide blades are spirally formed and connected to the outer circumferential wall of the mandrel; the helical direction of the plurality of guide vanes in a helical configuration corresponds to the direction of rotation of the impactor drilling.

3. The blade form guide joint according to claim 1, wherein one end of the guide blade is welded to the outer circumferential wall of the mandrel, and the end face of the other end of the guide blade serves as a positioning surface for abutting contact with the inner wall of the percussive drill hole.

4. A blade form guide vane joint as claimed in claim 3 wherein the guide vane is of flat construction; and a blade mounting groove is formed in the outer circumferential wall of the mandrel, and one end of the guide blade is welded and connected with the blade mounting groove.

5. A blade form guide joint according to claim 3, wherein the locating surface is provided with wear parts, which are a plurality of cemented carbide teeth arranged on the locating surface, or the locating surface is provided with an adapted wear layer.

6. The blade form guide joint according to claim 5, wherein the positioning surface is preferably a smooth curved surface, the wear-resistant layer is laid to cover the smooth curved surface, and the wear-resistant layer is a tungsten carbide material layer.

7. The blade form guide joint according to any one of claims 1 to 6, wherein one of the first and second connection forms is a male thread form and the other of the first and second connection forms is a female thread form.

8. The blade form guide joint according to any one of claims 1 to 6, wherein a first wrench square opening structure is provided on an outer peripheral wall of the mandrel between the first connection structure and the guide blade, the first wrench square opening structure including: two first square grooves are correspondingly arranged along the outer circumferential direction of the mandrel.

9. The blade form guide joint according to any one of claims 1 to 6, wherein a second wrench square opening structure is provided on the outer peripheral wall of the mandrel between the second connection structure and the guide blade, the second wrench square opening structure including: two second square grooves are correspondingly arranged along the outer circumferential direction of the mandrel.

10. An impactor characterized by comprising a blade-like structure guide joint according to any one of claims 1 to 9, and an impactor body; the impactor body is provided with a drill bit end and a drill rod connecting end;