Connecting device for mounting anchor rod of air-leg rock drill

Abstract

The utility model discloses a connecting device for mounting an anchor rod of an air-leg rock drill, which comprises a drill rod mounting section which is of a long straight rod-shaped structure and is provided with a plurality of plane side walls which are sequentially connected end to end along the circumferential direction and form included angles with one another; the anchor rod sleeve comprises a base body coaxially fixed with the drill rod mounting section and a plurality of splicing sections coaxially and detachably connected with the base body, the splicing sections and the base body are inserted in the radial direction and clamped in the axial direction, and the adjacent splicing sections are inserted in the radial direction and clamped in the axial direction; the anchor rod sleeve is provided with a limiting hole which is coaxial with the anchor rod sleeve and used for containing an anchor rod. According to the scheme, after the anchor rod hole is constructed through the air-leg rock drill, the drill rod installation section is installed on the air-leg rock drill, the anchor rod to be installed is inserted into the limiting hole, then the anchor rod can be installed, a plurality of splicing sections can be used for a long anchor rod so that the length of the limiting hole can be increased, and the number of the splicing sections can be reduced after the anchor rod is inserted into a certain length; the labor intensity in the anchor rod installation process is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine tunneling, and particularly relates to a connecting device for installing anchor bolts by a leg-type rock drill. Background Art

[0002] In the prior art, during the process of mine tunneling, after the anchor bolt holes are constructed by a leg-type rock drill and before the next process of injecting the anchor bolts, the air inlet pipe of the leg-type rock drill needs to be disconnected first, extended to a hand-held pneumatic anchor bolt installer, and then the hand-held pneumatic anchor bolt installer is used to install the anchor bolts into the anchor bolt holes. The above steps require connecting and disconnecting the air pipe and thus replacing the pneumatic equipment, which is cumbersome to operate and has potential safety hazards of equipment hurting people. Content of the Utility Model

[0003] In view of this, the utility model provides a connecting device for installing anchor bolts by a leg-type rock drill. After the anchor bolt holes are constructed by the leg-type rock drill, the drill rod installation section can be installed on the leg-type rock drill, and the anchor bolt to be installed is inserted into the limiting hole to start installing the anchor bolt. For long anchor bolts, multiple splicing sections can be used to increase the length of the limiting hole, and the number of splicing sections can be reduced after the anchor bolt is inserted a certain length to reduce the labor intensity during the installation process of the anchor bolt.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A connecting device for installing anchor bolts by a leg-type rock drill, comprising:

[0006] A drill rod installation section, which is in a long straight rod shape and has a plurality of planar side walls that are sequentially connected end to end in the circumferential direction and are mutually angled.

[0007] An anchor bolt sleeve, including a base body coaxially fixed with the drill rod installation section and a splicing section detachably connected to the base body coaxially. The splicing section is inserted into the base body in the radial direction and clamped in the axial direction. The anchor bolt sleeve has a limiting hole coaxially with the anchor bolt sleeve and used for accommodating the anchor bolt.

[0008] Preferably, one end of the drill rod installation section extends into the interior of the base body and is fixedly connected with the base body.

[0009] Preferably, the limiting hole penetrates through the anchor bolt sleeve along the axial direction of the anchor bolt sleeve, and part of the drill rod installation section is exposed from the limiting hole.

[0010] Preferably, the end of the drill rod installation section extending into the base body has a plurality of positioning grooves, which are distributed along the axial direction of the drill rod installation section and have an inner diameter gradually increasing.

[0011] Preferably, a claw extending out of an end surface of the splicing section is fixed on the splicing section, and a slot for accommodating the claw is provided on the base.

[0012] Preferably, when the end surface of the base body abuts against the end surface of the splicing section, a portion of the outer wall of the clamping claw that is away from the splicing section is exposed from the clamping groove opening.

[0013] Preferably, the claw extends from the end surface of the splicing section along the axial direction of the anchor sleeve and is arranged with an expanded diameter. When the claw is inserted into the slot, the outer wall of the splicing section is cylindrical.

[0014] Preferably, the base body comprises a reduced diameter section for accommodating the drill rod installation section, and an expanded diameter section for clamping the splicing section.

[0015] It can be seen from the above technical scheme that the utility model provides a connecting device for installing anchor rods on an air-leg rock drill. After the anchor rod hole is constructed using the air-leg rock drill, the drill rod installation section is installed on the air-leg rock drill. The anchor rod to be installed is inserted into the limiting hole and the anchor rod installation can be started. For long anchor rods, multiple splicing sections can be used to increase the length of the limiting hole. The number of splicing sections can also be reduced after the anchor rod is inserted to a certain length to reduce the labor intensity of the anchor rod installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram showing the structure of a connection device for installing an anchor rod on a gas-leg rock drill according to an exemplary embodiment;

[0018] Figure 2 is a schematic diagram showing a positioning groove structure according to an exemplary embodiment;

[0019] Figure 3 It is a schematic diagram showing the structure of a spliced ​​segment according to an exemplary embodiment.

[0020] Reference numerals:

[0021] 1. Drill rod installation section; 2. Anchor rod sleeve; 3. Base body; 31. Reduced diameter section; 32. Expanded diameter section; 33. Installation groove; 4. Splicing section; 5. Limiting hole; 6. Clamping groove; 61. Clamping claw; 62. Clamping part. DETAILED DESCRIPTION

[0022] The utility model discloses a connecting device for installing an anchor rod by a leg-type rock drill. After the anchor rod hole is constructed by the leg-type rock drill, the drill rod installation section can be installed on the leg-type rock drill, and the anchor rod to be installed is inserted into the limiting hole to start installing the anchor rod. For long anchor rods, multiple splicing sections can be used to increase the length of the limiting hole, and the number of splicing sections can be reduced after the anchor rod is inserted a certain length to reduce the labor intensity during the installation of the anchor rod.

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0024] In an exemplary embodiment of the present disclosure, a connecting device for installing an anchor rod by a leg-type rock drill is provided. As Figure 1 shown, Figure 1 is a schematic diagram showing the structure of a connecting device for installing an anchor rod by a leg-type rock drill according to an exemplary embodiment; Figure 2 is a schematic diagram showing the structure of a positioning groove according to an exemplary embodiment; Figure 3 is a schematic diagram showing the structure of a splicing section according to an exemplary embodiment. The following will be explained in conjunction with Figures 1 to 3 for illustration.

[0025] Some specific implementation manners described hereinafter are intended to facilitate the understanding of those skilled in the art of this embodiment, and this embodiment is not limited to some specific implementation manners described hereinafter.

[0026] Referring to Figure 1 and Figure 2 in the present disclosure, a connecting device for installing an anchor rod by a leg-type rock drill provided in an exemplary embodiment of the present disclosure includes:

[0027] A drill rod installation section 1, having a long straight rod-like structure, with a plurality of planar side walls that are sequentially connected end to end along the circumference and are mutually angled;

[0028] An anchor rod sleeve 2, including a base body 3 coaxially fixed to the drill rod installation section 1, and a plurality of splicing sections 4 detachably connected to the base body 3 coaxially. The splicing sections 4 are inserted radially and clamped axially with the base body 3, and are inserted radially and clamped axially between adjacent splicing sections 4. The anchor rod sleeve 2 has a limiting hole 5 coaxially with the anchor rod sleeve 2 for accommodating the anchor rod.

[0029] Exemplarily, referring to Figure 1 and Figure 2, the drill rod installation section 1 has a horizontally placed regular hexagonal prism structure. The outer wall of the drill rod installation section 1 can be clamped after being inserted into the power output end of the leg-type rock drill, reducing the possibility of the drill rod installation section 1 moving or falling off during the operation of the leg-type rock drill. Or the discarded drill rod at the construction site can be directly used as the drill rod installation section 1. One of the functions of the drill rod at the construction site is to be installed on the leg-type rock drill to form an anchor hole in the rock mass. Using the drill rod at the construction site directly as the drill rod installation section 1 can ensure a tight fit between the drill rod installation section 1 and the leg-type rock drill.

[0030] The base body 3 includes a reduced-diameter section 31 for accommodating the drill rod installation section 1 and an enlarged-diameter section 32 for clamping the splicing section 4. The reduced-diameter section 31 has a horizontally placed frustum of a cone structure. The end with a smaller outer diameter of the reduced-diameter section 31 faces the drill rod installation section 1. The side wall edge of the drill rod installation section 1 is located inside the area surrounded by the end face edge of this end of the reduced-diameter section 31. The other end of the reduced-diameter section 31 faces the splicing section 4. The enlarged-diameter section 32 has a horizontally placed cylindrical shape. The enlarged-diameter section 32 is coaxially arranged with the reduced-diameter section 31. One end face of the enlarged-diameter section 32 is fixedly attached to the end face of the reduced-diameter section 31 with a larger outer diameter, and the outer wall of the enlarged-diameter section 32 is coplanar with the edge of the end of the reduced-diameter section 31 with a larger outer diameter.

[0031] One end of the drill rod installation section 1 extends into the base body 3 and is fixedly connected to the base body 3. An installation groove 33 is provided on the reduced-diameter section 31 and penetrates through the reduced-diameter section 31 along its own axis direction. One end of the drill rod installation section 1 extends into the installation groove 33 and is fixed to the reduced-diameter section 31 by welding. The end face of the drill rod installation section 1 facing the enlarged-diameter section 32 abuts against the end face of the enlarged-diameter section 32 facing the reduced-diameter section 31. To enhance the connection strength between the drill rod installation section 1 and the base body 3, the inner contour of the installation groove 33 can be a regular hexagonal prism shape adapted to the shape of the drill rod installation section 1.

[0032] Refer to Figure 1 and Figure 2, the limiting hole 5 penetrates through the anchor rod sleeve 2 along the axial direction of the anchor rod sleeve 2, and a part of the drill rod installation section 1 is exposed from the limiting hole 5. The limiting hole 5 is coaxially arranged with the drill rod installation section 1, and the limiting hole 5 penetrates through the splicing section 4 while penetrating through the reduced diameter section 31 and the enlarged diameter section 32. The end of the drill rod installation section 1 extending into the base body 3 has a plurality of positioning grooves 51, and the positioning grooves 51 are distributed along the axial direction of the drill rod installation section 1 and the inner diameter gradually increases, that is, the inner diameter of the positioning groove 51 closer to the enlarged diameter section 32 is larger, and the opening of the positioning groove 51 with the largest inner diameter is formed on the end face of the drill rod installation section 1 facing the enlarged diameter section 32, and the inner diameter of this positioning groove 51 is the same as the inner diameter of the limiting hole 5, and other positioning grooves 51 with smaller inner diameters form a stepped surface structure inside the drill rod installation section 1. After inserting anchor rods of different sizes into the limiting hole 5, the anchor rods can extend into the positioning groove 51 through the enlarged diameter section 32, and obtain a positioning effect after being inserted into different positioning grooves 51, reducing the possibility that a large angle is generated between the anchor rod and the drill rod installation section 1 due to the too large distance between the inner wall of the limiting hole 5 and the anchor rod, so that the anchor rod is bent due to excessive radial force during the installation process of the anchor rod.

[0033] Refer to Figure 1 and Figure 3 , the contour of the splicing section 4 is in the shape of a horizontally placed cylinder, and a clamping jaw 61 extending out of the end face of the splicing section 4 is fixed on the splicing section 4. A clamping groove 6 for accommodating the clamping jaw 61 is opened on the base body 3. The clamping jaw 61 extends out from the end face of the splicing section 4 along the axial direction of the anchor rod sleeve 2 and is arranged with an enlarged diameter. The end of the clamping jaw 61 facing the enlarged diameter section 32 forms a clamping portion 62, and the clamping jaw 61 with the clamping portion 62 is in the shape of a horizontally placed T-shaped block structure. Similarly, the clamping groove 6 is in the shape of a horizontally placed T-shaped groove adapted to the clamping jaw 61. While the clamping groove 6 communicates with the outside from the side wall of the base body 3 or the splicing section 4, the clamping groove 6 communicates with the outside from one end face of the base body 3 or the splicing section 4. When the splicing section 4 is connected to the base body 3 or another splicing section 4, the end face of the splicing section 4 connected with the clamping jaw 61 is vertically aligned with the end face of the base body 3 or another splicing section 4 provided with the clamping groove 6. After aligning the clamping jaw 61 with the clamping groove 6, the splicing section 4 is moved radially along the splicing section 4 to insert the clamping jaw 61 into the clamping groove 6. After the clamping jaw 61 is inserted into the clamping groove 6, the outer wall of the splicing section 4 inserted by the clamping jaw 61 is in the shape of a cylindrical surface, and the limiting hole 5 in the center of the splicing section 4, the limiting hole 5 in the center of the base body 3, and the positioning groove 51 in the center of the drill rod installation section 1 are all coaxially arranged.

[0034] When the end face of the base body 3 abuts against the end face of the splicing section 4, the outer wall of the part of the claw 61 away from the splicing section 4 is exposed from the opening of the clamping groove 6. The inner diameter of the clamping groove 6 is enlarged by a grinding tool such as a file or by machining, so that a gap is generated between the side wall of the claw 61 away from the splicing section 4 and the inner wall of the clamping groove 6. The impact force during the operation of the pneumatic leg rock drill is transmitted from the drill rod installation section 1 to the base body 3 and the splicing section 4. Since the base body 3 and the splicing section 4, and the splicing section 4 and the splicing section 4 are all end-face abutted, after a gap is formed between the claw 61 and the clamping groove 6, it does not affect the installation of the anchor rod and can reduce the possibility of damage to the claw 61 and the clamping groove 6 due to force.

[0035] In this embodiment, after the anchor rod hole is constructed by using a pneumatic leg rock drill, the drill rod installation section 1 is installed on the pneumatic leg rock drill, and the anchor rod to be installed is inserted into the limiting hole 5 to start installing the anchor rod. For long anchor rods, multiple splicing sections 4 can be used to increase the length of the limiting hole 5, and the number of splicing sections 4 can also be reduced after the anchor rod is inserted a certain length to reduce the labor intensity during the installation of the anchor rod.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting device for installing an anchor rod on a gas-leg rock drill, characterized in that: include: The drill rod installation section (1) is in the form of a long straight rod, and has a plurality of planar side walls which are connected end to end in sequence along the circumferential direction and form angles with each other; The anchor sleeve (2) comprises a base (3) coaxially fixed to the drill rod mounting section (1), and a plurality of splicing sections (4) coaxially detachably connected to the base (3), the splicing sections (4) and the base (3) being plugged in radially and clamped in axially, and adjacent splicing sections (4) being plugged in radially and clamped in axially, and the anchor sleeve (2) has a limiting hole (5) for accommodating the anchor rod.

2. The connecting device for installing an anchor rod on a pneumatic leg rock drill according to claim 1, characterized in that: One end of the drill rod mounting section (1) extends into the interior of the base body (3) and is fixedly connected to the base body (3).

3. The connecting device for installing an anchor rod on a pneumatic leg type rock drill according to claim 2, characterized in that: The limiting hole (5) penetrates the anchor sleeve (2) along the axial direction of the anchor sleeve (2), and a portion of the drill rod installation section (1) is exposed from the limiting hole (5).

4. The connecting device for installing an anchor rod on a pneumatic leg rock drill according to claim 2, characterized in that: The end of the drill rod installation section (1) extending into the base body (3) has a plurality of positioning grooves (51), and the positioning grooves (51) are distributed along the axial direction of the drill rod installation section (1) and have gradually increasing inner diameters.

5. The connecting device for installing an anchor rod on a pneumatic leg rock drill according to claim 1, characterized in that: A clamping claw (61) extending out of the end surface of the splicing section (4) is fixed on the splicing section (4), and a clamping groove (6) for accommodating the clamping claw (61) is provided on the base body (3).

6. The connecting device for installing an anchor rod on a pneumatic leg type rock drill according to claim 5, characterized in that: When the end surface of the base body (3) abuts against the end surface of the splicing section (4), a portion of the outer wall of the clamping claw (61) that is away from the splicing section (4) is exposed from the opening of the clamping groove (6).

7. The connecting device for installing an anchor rod on a pneumatic leg rock drill according to claim 6, characterized in that: The clamping claw (61) extends from the end surface of the splicing section (4) along the axial direction of the anchor sleeve (2) and is arranged with an expanded diameter. When the clamping claw (61) is inserted into the inside of the clamping groove (6), the outer wall of the splicing section (4) is cylindrical.

8. The connecting device for installing an anchor rod on an air-leg rock drill according to claim 1, characterized in that: The base body (3) comprises a reduced diameter section (31) for accommodating the drill rod installation section (1), and an expanded diameter section (32) for clamping the splicing section (4).

Images