CN217300493U - Drilling tool and anchor rod drilling depth control device - Google Patents

Abstract

The utility model provides a drilling tool and an anchor rod drilling depth control device, relating to the technical field of drilling equipment, wherein the drilling tool comprises a drilling part and a limiting part, and the limiting part is arranged at the position of the drilling part away from the end part by a preset length; wherein the preset length is 70-100 mm. When the limiting part is abutted to the surface of the construction area, the depth of the formed hole is judged to be just in accordance with the mounting depth of the anchor rod support, so that the problem that the drilling depth is too large due to subjective or objective reasons of workers can be fundamentally avoided, the construction quality of anchor rod drilling is improved, the phenomenon that the anchoring length of the anchor rod is not enough is avoided, and the drilling tool also has the advantages of simple structure, low production cost and contribution to large-scale popularization and application.

Description

Drilling tool and anchor rod drilling depth control device

Technical Field

The utility model relates to a drilling equipment technical field especially relates to a drilling tool and stock drilling depth controlling means.

Background

In the current coal mine, more than 90% of roadways are supported by anchor rods, the construction quality of the anchor rod support plays a decisive role in the anchor rod support effect, the drilling construction of most mine anchor rod supports is mainly completed by operating a single anchor rod drilling machine by workers, and the construction quality of the drilling depth is greatly influenced by the workers.

The construction quality of the drilling depth affects the bolting effect. If the drilling depth exceeds the design requirement, the anchoring agent can be accumulated at the bottom of the hole, so that the actual anchoring length of the anchor rod is lower than the design anchoring length, and the anchor rod supporting effect is influenced; if the drilling depth is lower than the design requirement, the anchor rod is exposed too long, and the anchor rod is easy to lose efficacy.

In the field construction, in order to avoid the condition that the anchor rod fails due to insufficient drilling depth, the drilling depth formed by the construction of workers is generally larger than the designed drilling depth, so that the anchor rod supporting effect on the field cannot be expected, and therefore, a drilling tool and an anchor rod drilling depth control device are urgently needed to accurately grasp the drilling depth of the drill rod so as to ensure the anchor rod supporting effect.

SUMMERY OF THE UTILITY MODEL

The utility model provides a drilling tool and stock drilling depth controlling means for solve and be difficult to carry out the technical problem that the accuracy was held to drilling depth among the prior art, make drilling depth accord with the requirement of stock support, thereby ensure the effect of stock support.

The utility model provides a drilling tool, include: the limiting part is arranged at a position, away from the end part, of a preset length of the drilling part;

wherein the preset length is 70-100 mm.

According to the utility model provides a drilling tool, drilling portion sets up to shaft-like.

According to the utility model provides a pair of drilling tool, the length of drilling portion is 1000mm, 1200mm or 1500 mm.

According to the utility model provides a pair of drilling tool, spacing portion sets up to ring shape.

According to the utility model provides a pair of drilling tool, the thickness of spacing portion is 10mm, and the internal diameter is 26mm, and the external diameter is 60 mm.

According to the utility model provides a pair of drilling tool, spacing portion cover is located the outside of drilling portion, just spacing portion is suitable for through welded fastening in drilling portion.

The utility model also provides an anchor rod drilling depth control device, include: the output end of the drilling machine is coaxially connected with one end, close to the limiting part, of the drilling part.

According to the utility model provides a pair of stock drilling depth control device still includes: the drill rod is coaxially connected with one end, far away from the limiting part, of the drilling part.

According to the utility model provides a pair of stock drilling depth controlling means, the drilling rod with drilling portion can be dismantled and link to each other.

According to the utility model provides a pair of stock drilling depth controlling means, the output of rig with drilling portion can be dismantled and link to each other.

The embodiment of the utility model provides a boring tool and anchor rod drilling depth controlling means, when spacing portion butt to the construction area surface, then judge that the degree of depth of pore-forming just in time accords with anchor bolt support's installation depth, can fundamentally avoid the workman to cause the too big problem of drilling depth because of subjective or objective reason like this, the construction quality of anchor rod drilling has been improved, the phenomenon that anchor rod anchoring length is not enough has been avoided appearing, and this boring tool still has simple structure, low in production cost, do benefit to the advantage of extensive popularization and application.

Drawings

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

Fig. 1 is a cross-sectional view of a drilling tool provided by the present invention;

fig. 2 is a front view of the drilling tool provided by the present invention.

Reference numerals:

1. drilling a hole part; 2. a limiting part; 3. and (7) welding the layers.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The drilling tool of the present invention is described below with reference to fig. 1 to 2, and includes a drilling portion 1 and a limiting portion 2, wherein the limiting portion 2 is disposed at a position of the drilling portion 1 away from an end portion by a predetermined length, which is 70 to 100mm (millimeters).

In this embodiment, when spacing portion 2 butt to the construction area surface, then judge that the depth of pore-forming just in time accords with anchor bolt support's installation depth, can fundamentally avoid the workman to appear because of subjective or objective reason leads to the too big problem of drilling depth, improved the construction quality of stock drilling like this, avoided appearing the phenomenon that stock anchor length is not enough, and this drilling tool still has simple structure, low in production cost, do benefit to the advantage of extensive popularization and application.

Wherein, the drilling part 1 is arranged in a rod shape, in particular a cylindrical rod shape, and the length of the drilling part 1 is 1000mm, 1200mm or 1500 mm. The limiting part 2 is arranged in a circular ring shape, the thickness of the limiting part 2 is 10mm, the inner diameter is 26mm, and the outer diameter is 60 mm. At this time, the limiting part 2 can be sleeved outside the drilling part 1, and then the limiting part 2 and the drilling part 1 form a fixed connection by using a welding mode. As shown in fig. 1, a welding layer 3 is provided between the drilling portion 1 and the stopper portion 2.

As the drilling depth specified by the national technical standard of bolting is 70-100mm less than the length of the anchor rod, and the preset length is set to be 70-100mm, the drilling depth formed by the drilling part 1 after drilling is 70-100mm less than the length of the anchor rod, the drilling depth can be accurately grasped, and the subjective judgment of workers is not needed any more.

In another embodiment of the present invention, the drilling portion 1 is provided with an annular groove at a position 70-100mm away from the end portion, the annular groove can be set to 30mm in length to cover the whole 70-100mm interval, the limiting portion 2 can be set to be plate-shaped members of two semicircular rings, the plate-shaped members of the two semicircular rings are clasped in the annular groove, so as to connect the drilling portion 1 and the limiting portion 2.

Wherein, the tip or the lateral part of the plate-like piece of two semicircle rings can be provided with the engaging lug, can be provided with the connecting hole on the engaging lug, and when the plate-like piece cohesion of two semicircle rings links to each other, the engaging lug on the plate-like piece of two semicircle rings is laminated mutually, and the connecting hole is linked together, utilizes the fastener to wear to locate in two connecting holes this moment, realizes the stable connection between drilling portion 1 and spacing portion 2. In this way, the position of the limiting part 2 can be conveniently adjusted, so that the drilling depth can be adjusted.

Also can be provided with the engaging lug at the tip or the lateral part of the platelike piece of two semicircle rings, set up the threaded rod on one of them engaging lug, set up the connecting hole on another engaging lug, when the platelike piece cohesion of two semicircle rings links to each other, the threaded rod is worn to locate in the connecting hole, then on screwing in the threaded rod through the nut, realize the fixed connection of the platelike piece of two semicircle rings to make and can carry out stable connection between drilling portion 1 and spacing portion 2. In this way, the position of the limiting part 2 can be conveniently adjusted, so that the drilling depth can be adjusted.

The inner sides of the plate-shaped parts of the two semicircular rings can be provided with anti-slip layers, so that the plate-shaped parts of the two semicircular rings have great friction force when being embraced in the annular groove, and the axial slipping of the limiting part 2 on the drilling part 1 is avoided.

The utility model discloses a in another embodiment, be equipped with a plurality of through-holes in the position department of distance tip 70-100mm on drilling portion 1, a plurality of through-holes evenly set up along the axial of drilling portion 1, the fastening hole has also been seted up on spacing portion 2, after cup jointing spacing portion 2 on drilling portion 1 again, the fastening hole aligns with the through-hole, then utilize the fastener to make fastening hole and through-hole realize being connected, thereby accomplish the assembly between spacing portion 2 and the drilling portion 1, adopt above-mentioned mode can utilize the fastening hole to aim at the through-hole of different positions, realize the regulation of spacing portion 2 position, thereby adjust drilling depth.

The utility model discloses an in another embodiment, be equipped with a plurality of through-holes in the position department of distance tip 70-100mm on drilling portion 1, a plurality of through-holes evenly set up along the axial of drilling portion 1, the surface of spacing portion 2 inner ring is provided with accomodates the groove, accomodate the inslot and be provided with the fixture block telescopically, wherein, locate spacing portion 2 cover back on drilling portion 1, stretch out the fixture block and accomodate the groove, so that the tip card of fixture block establishes in the through-hole, thereby realize being connected between drilling portion 1 and the spacing portion 2, adopt above-mentioned mode can utilize the through-hole of the different positions of fixture block joint, realize the regulation of spacing portion 2 position, thereby adjust drilling depth.

Wherein, the scalable mode of connecting of fixture block can be: establish the end with the card of fixture block and set up to the hemisphere, be connected the other end of fixture block with the tank bottom surface of accomodating the groove through the spring to utilize the shrink of spring and the cooperation of hemispherical joint end and through-hole, realize in the fixture block card goes into the through-hole and realize that the fixture block takes out from the through-hole, so that can be connected and separate between spacing portion 2 and the drilling portion 1.

The telescopic connection mode of the fixture blocks can also be as follows: set up electronic telescopic machanism in accomodating the inslot, electronic telescopic machanism's flexible end links to each other with the link of fixture block, sets up the regulation button in the outside of fixture block, drives electronic telescopic machanism through pressing the regulation button and extends or shorten to the drive fixture block moves, so that the fixture block joint in the through-hole or make the fixture block slide and go out from the through-hole, in order to realize being connected and separating between spacing portion 2 and the drilling portion 1.

The telescopic connection mode of the clamping blocks can also be as follows: set up the gasbag at accomodating the inslot, the gasbag will follow the depth direction activity of accomodating the groove after bleeding, at this moment, can set up miniature inflating mechanism in the outside of fixture block, miniature inflating mechanism's the end of giving vent to anger extends to and accomodates in the groove and is linked together with the gasbag, and the fixture block links to each other with the inflation side of gasbag, utilize miniature inflating mechanism to inflate the gasbag, alright make the fixture block slide in the through-hole towards the through-hole, deflate the gasbag through miniature inflating mechanism, alright make the fixture block slide and go out from the through-hole, in order to realize being connected and separating between spacing portion 2 and drilling portion 1.

In another embodiment of the utility model, the tip of drilling portion 1 sets up the external screw thread to the interval end apart from tip 100mm, and be provided with the mark region in the position department apart from 70-100mm, inner circle at spacing portion 2 sets up the internal thread, rotate spacing portion 2 through threaded connection's mode and cup joint on drilling portion 1, and make spacing portion 2 screw thread twist move to in the mark region, thereby realize being connected between spacing portion 2 and the drilling portion 1, and can utilize spacing portion 2 threaded connection to mark interval different positions on drilling portion 1 through such a mode, thereby realize the regulation of spacing portion 2 position.

In another embodiment of the present invention, the drilling portion 1 is configured as a round table structure, the drilling end thereof is the end with smaller diameter, and the end connected to the drilling machine is the end with larger diameter, so that better drilling can be performed at this time. The drilling portion 1 having a truncated cone-shaped structure is particularly suitable for being fixed to the stopper portion 2 by welding.

On the other hand, the utility model provides a stock drilling depth controlling means, this stock drilling depth controlling means include the drilling tool in rig and the aforementioned embodiment, and wherein, the output of rig links to each other with drilling portion 1 is close to the one end of spacing portion 2 is coaxial. So that the drill part 1 is driven to rotate by the drill to drill.

The anchor rod drilling depth control device further comprises a drill rod, and the drill rod is coaxially connected with one end, far away from the limiting portion 2, of the drilling portion 1. Specifically, when conventional drilling is performed, two drill rods are generally required to be used for drilling, in the scheme, the drilling portion 1 is used for replacing another drill rod, so that the drilling portion 1 is matched with the drill rods to realize drilling. Wherein, no limiting part 2 is arranged on the drill rod.

Taking the length of the anchor rod as 2000mm as an example, when drilling, the drill rod is arranged at the front side (in terms of the drilling direction), the drill hole part 1 is arranged at the rear side, and the drill rod and the drill hole part 1 are both set to be 1000mm in length.

The drill rod is detachably connected with the drill hole part 1, the output end of the drilling machine is detachably connected with the drill hole part 1, so that the drill hole part 1 and the drilling machine can be conveniently detached, and the drill hole part 1 and the drill rod can be detached. Wherein, can dismantle the mode of connecting can be for setting up mutually supporting draw-in groove and fixture block at the tip, carry out the joint through draw-in groove and fixture block and realize dismantling the connection, avoid appearing the ascending rotation of axial simultaneously. The detachable connection may also be by means of a fastener to connect the ends.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A drilling tool is characterized by comprising a drilling part and a limiting part, wherein the limiting part is arranged at a position, away from the end part, of a preset length of the drilling part;

wherein the preset length is 70-100 mm;

the drilling part is provided with an annular groove in the preset length range, the limiting part comprises two semicircular plate-shaped parts, the two plate-shaped parts are respectively provided with a connecting lug, the two plate-shaped parts are suitable for being connected in a closed mode and are encircled in the annular groove, and the two connecting lugs are attached to each other and are suitable for being fixed through a fastening piece;

wherein, the one side that the platelike spare faced the ring channel is equipped with anti-skidding layer.

2. The drilling tool as set forth in claim 1, wherein the drilling portion is provided in a rod shape.

3. The drilling tool of claim 2, wherein the length of the bore portion is 1000mm, 1200mm or 1500 mm.

4. The drilling tool of claim 2, wherein the limiting portion is provided in the shape of a circular ring.

5. The drilling tool as claimed in claim 4, wherein the stop portion has a thickness of 10mm, an inner diameter of 26mm and an outer diameter of 60 mm.

6. The drilling tool as claimed in claim 4, wherein the stopper portion is fitted around the outside of the drilling portion and is adapted to be fixed to the drilling portion by welding.

7. A rock bolt drilling depth control device comprising a drill and a drilling tool according to any one of claims 1 to 6, wherein the output end of the drill is coaxially connected to the end of the drilling portion adjacent the stop portion.

8. The rock bolt drilling depth control device of claim 7, further comprising: the drill rod is coaxially connected with one end, far away from the limiting part, of the drilling part.

9. A rock bolt drilling depth control device according to claim 8, wherein the drill rod is removably connected to the drill portion.

10. A rock bolt drilling depth control device according to any one of claims 7 to 9, wherein the output end of the drill is removably connected to the drilling portion.

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