Underground mine supporting anchor rod drilling device

Abstract

The utility model discloses an underground mine support anchor rod drilling device, which comprises an air leg, the air drill is hinged with the air leg; the rod changing unit comprises a rod changing piece, a rod changing sleeve and a rod changing assembly, the rod changing piece is connected with a rotation unit of the air drill, a rod changing cavity is formed in the rod changing piece, the rod changing sleeve is arranged in the rod changing cavity in a matched mode, the rod changing sleeve is connected with the rod changing cavity in a sliding fit mode, and an installation cavity used for installing an anchor rod is formed in the rod changing sleeve; the rod replacing assembly is configured to be capable of locking the rod replacing sleeve in the rod replacing cavity and unlocking the rod replacing sleeve. The rod replacing unit is arranged on the air drill, so that the drill rod and the anchor rod can be rapidly replaced, and the efficiency of anchor rod drilling construction is improved; according to the anchor rod replacing unit, the mode that the drill rod and the anchor rod are drilled twice is adopted in a matched mode, the characteristics of the rod replacing unit are combined, the construction efficiency is guaranteed, meanwhile, the anchor rod deformation problem caused by long-distance drilling is avoided, and the anchor rod supporting construction quality is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mine support technology, specifically relating to an underground mine support anchor drilling device. Background Technology

[0002] Due to the influence of geological and engineering conditions of the ore body and surrounding rock, anchor bolt safety support is required for the roof and sidewalls of some roadways during the preparation, cutting, medium-deep hole construction, and blasting ore extraction processes in underground metal mines. During support construction, limitations in the size of the underground roadway section and the length of the anchor bolts often make it difficult to drive a 2-meter-long anchor bolt into the fractured rock strata in one go, resulting in low anchor bolt drilling efficiency. Furthermore, anchor bolt deformation is easily caused during drilling, affecting the construction efficiency and quality of the anchor bolt support. Utility Model Content

[0003] The purpose of this utility model is to provide an underground mine support anchor drilling device to solve the problems of low drilling efficiency and anchor deformation in the support construction of narrow underground roadways.

[0004] This utility model is achieved through the following technical solution:

[0005] The underground mine support anchor drilling device includes:

[0006] Air leg;

[0007] A pneumatic drill, wherein the pneumatic drill is hinged to an air leg;

[0008] The rod changing unit includes a rod changing component, a rod changing sleeve, and a rod changing assembly. The rod changing component is connected to the rotary unit of the pneumatic drill. The rod changing component has a rod changing cavity, and the rod changing sleeve is fitted into the rod changing cavity. The rod changing sleeve and the rod changing cavity are slidably connected. The rod changing sleeve has an installation cavity for installing anchor bolts. The rod changing assembly is configured to lock the rod changing sleeve in the rod changing cavity and to release the lock on the rod changing sleeve.

[0009] In some embodiments, the mounting cavity is a conical structure, and the ends of the anchor rod and drill rod are provided with conical joints that mate with the mounting cavity. The anchor rod and drill rod are connected to the rod replacement sleeve through the joints.

[0010] In some embodiments, the rod changing assembly includes a locking sleeve and a locking ball disposed within a locking hole of the rod changing member;

[0011] A locking groove is provided on the change sleeve to cooperate with the locking ball. The lock sleeve is fitted on the change sleeve and can press the locking ball into the locking groove when the lock sleeve moves to a position above the locking ball.

[0012] In some embodiments, there are multiple lock holes, lock balls, and locking grooves, and the lock holes and lock balls are distributed circumferentially along the rod member.

[0013] In some embodiments, the locking groove is an arc-shaped groove arranged circumferentially along the sleeve.

[0014] In some embodiments, the changing rod is provided with a limiting flange, a return spring is provided between the limiting flange and the locking sleeve, and a retaining ring is provided on the other side of the changing rod to limit the locking sleeve.

[0015] In some embodiments, a clearance groove is provided at one end of the locking sleeve, and when the locking ball enters the clearance groove, the locking ball can be completely disengaged from the locking groove.

[0016] In some embodiments, the clearance groove is an annular structure arranged circumferentially.

[0017] In some embodiments, a support sleeve is provided inside the pole changing cavity. The support sleeve is fitted inside the pole changing cavity and is slidably connected to the pole changing cavity. A pole changing spring is provided between the support sleeve and the pole changing component. When the pole changing spring is in a free state, it can push the support sleeve to the position of the locking ball and provide support for the locking ball.

[0018] In some embodiments, the support sleeve is provided with a limiting groove, which is an annular structure.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] This invention incorporates a rod-changing unit on the pneumatic drill, enabling rapid replacement of drill rods and anchor bolts, thus improving the efficiency of anchor bolt drilling. Combined with a two-stage drilling method involving both drill rods and anchor bolts, and leveraging the features of the rod-changing unit, it ensures construction efficiency while avoiding anchor bolt deformation caused by long-distance drilling, thereby improving the quality of anchor bolt support construction. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the drilling device structure according to an embodiment of the present utility model.

[0023] Figure 2 for Figure 1 A partial schematic diagram of point A in the middle.

[0024] Figure 3 This is a schematic diagram of the rod changing unit structure in the drilling device of this utility model embodiment.

[0025] Figure 4 This is a schematic cross-sectional view of the rod changing unit in the drilling device of this utility model embodiment.

[0026] Figure 5 This is a schematic diagram of the rod-changing sleeve structure in the rod-changing unit of this utility model embodiment.

[0027] Figure 6 This is a schematic diagram of the locking sleeve cross-section in the rod-changing unit of this utility model embodiment.

[0028] in:

[0029] 10. Pneumatic leg;

[0030] 20. Pneumatic drill; 21. Transition component;

[0031] 30. Rod changing unit; 31. Rod changing component; 311. Rod changing cavity; 312. Locking hole; 313. Limiting flange; 32. Rod changing sleeve; 321. Mounting cavity; 322. Locking groove; 33. Locking sleeve; 331. Relief groove; 34. Locking ball; 35. Return spring; 36. Retaining ring; 37. Support sleeve; 371. Limiting groove; 38. Rod changing spring.

[0032] 40. Anchor bolt; 41. Joint. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0034] To address the issue of 2m long anchor rods easily deforming during a single drilling operation, the anchor rod construction process was improved. First, a 1m drill rod was used to drill holes in the fractured roof and surrounding rock on both sides. Then, the drill rod was replaced with a 2m anchor rod, which was driven into the drilled hole. At this point, only one more meter of drilling was needed. Furthermore, the auxiliary limiting effect of the hole on the anchor rod effectively solved the problem of deformation during drilling and avoided the problem of insufficient construction space.

[0035] Because the construction process involves drilling in two stages, it is necessary to replace the drill rods and anchor rods during the construction process. Therefore, the efficiency of replacing the drill rods and anchor rods directly affects the efficiency of the construction.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this utility model, the underground mine support anchor drilling device includes:

[0037] Air leg 10;

[0038] The pneumatic drill 20 is hinged to the air leg 10; the pneumatic drill is connected to the air source through an air duct, and the air source drives the pneumatic drill.

[0039] The rod changing unit 30 includes a rod changing component 31, a rod changing sleeve 32, and a rod changing assembly. The rod changing component 31 is connected to the rotary unit of the pneumatic drill 20. The rod changing component 31 is provided with a rod changing cavity 311. The rod changing sleeve 32 is fitted inside the rod changing cavity 311 and is slidably connected to the rod changing cavity 311. The rod changing sleeve 32 is provided with an installation cavity 321 for installing the anchor rod. The rod changing assembly is configured to lock the rod changing sleeve inside the rod changing cavity and to release the lock on the rod changing sleeve.

[0040] A rod-changing unit connects the drill rod and anchor bolt to the pneumatic drill. The rod-changing unit uses a rod-changing assembly to lock and unlock the rod-changing sleeve, enabling rapid installation and removal of the sleeve from the rod-changing component, thus facilitating quick replacement of the drill rod and anchor bolt. During construction, a 1m drill rod is installed onto the rod-changing sleeve, which is then installed into the rod-changing cavity. The sleeve is locked using the rod-changing assembly. The drill rod is then installed onto the pneumatic drill, which drives the drill rod to drill. After drilling, the rod-changing assembly unlocks the sleeve, allowing both the sleeve and drill rod to be removed from the component. The sleeve is then removed from the drill rod. A 2m anchor bolt is installed onto the sleeve, and the above steps are repeated. The anchor bolt is then installed onto the pneumatic drill, which drives the drill to drill. After drilling is complete, the above steps are repeated to remove the anchor bolt.

[0041] In some embodiments, refer to Figure 4 The mounting cavity 321 is designed with a tapered structure. The ends of the anchor rod 40 and drill rod are provided with tapered joints 41 that mate with the mounting cavity. The anchor rod 40 and drill rod are connected to the rod changing sleeve 32 through the joints 41. The tapered mating structure not only facilitates the installation of the anchor rod and drill rod on the rod changing sleeve, but also ensures the alignment accuracy when the anchor rod and drill rod are installed on the pneumatic drill.

[0042] In some embodiments, the rod changing assembly includes a locking sleeve 33 and a locking ball 34 disposed in a locking hole 312 of the rod changing member 31. The locking ball 34 matches the locking hole 312, allowing the locking ball to move radially within the locking hole.

[0043] A locking groove 322 is provided on the cue sleeve 32 to cooperate with the locking ball. The locking groove 322 is about 1 / 4 to 1 / 3 of a sphere, so that the cue sleeve can be locked when the locking ball falls into the locking groove. The locking sleeve 33 is fitted on the cue changing member 31, and when the locking sleeve 33 moves to be above the locking ball 34, it can press the locking ball into the locking groove. At this time, the cue sleeve can be locked by the locking ball, and the cue sleeve is fixedly connected in the cue changing cavity.

[0044] The locking and unlocking of the interchangeable lever sleeve is achieved by sliding the locking sleeve, as shown in the reference. Figure 4 Slide the locking sleeve to the left to expose the locking ball and release the locking ball. At this time, the locking ball can release the locking of the changing sleeve, so that the changing sleeve can be removed from the changing sleeve cavity.

[0045] During installation, after installing the pole change sleeve into the pole change cavity, the locking ball falls into the locking groove. Slide the locking sleeve to the right, and the locking sleeve will press the locking ball stably into the locking groove. At this time, through the cooperation between the locking ball and the locking groove, the pole change sleeve can be fixedly connected to the pole change component.

[0046] In some embodiments, there are multiple locking holes 312, locking balls 34, and locking grooves 322. The locking holes, locking balls, and locking grooves are in a one-to-one correspondence. The locking holes 312 are distributed circumferentially along the changing rod 31, and the corresponding locking grooves are distributed circumferentially along the changing rod sleeve. By connecting at multiple positions in the circumferential direction, the changing rod sleeve can be stably locked.

[0047] In some embodiments, refer to Figure 5 The locking groove 322 is set as an arc-shaped groove along the circumference of the rod replacement sleeve. The arc-shaped groove facilitates the alignment between the locking groove and the locking ball, making it convenient for the installation of the rod replacement sleeve. Furthermore, since the pneumatic drill is used to drive the rotation of the anchor rod, the arc-shaped groove will not affect the rotation drive of the anchor rod.

[0048] In some embodiments, a limiting flange 313 is provided on the changing rod 31, and a return spring 35 is provided between the limiting flange 313 and the locking sleeve 33. A retaining ring 36 capable of limiting the locking sleeve is provided on the other side of the changing rod 31. The return spring applies a rightward force to the locking sleeve, facilitating the movement of the locking sleeve from the unlocked position to the locked position, thereby achieving reset in the unlocked state.

[0049] In some embodiments, refer to Figure 4 and Figure 6 A clearance groove 331 is provided at one end of the locking sleeve 33, and when the locking ball enters the clearance groove, it can completely disengage from the locking groove. The clearance groove 331 is designed to provide clearance space for the locking ball to move outward. In this way, during the unlocking operation, the locking ball enters the clearance groove and, under the restriction of the clearance groove, will not completely disengage from the lock hole, thus preventing the locking ball from falling off the lever unit.

[0050] The relief groove 331 is set as a ring structure along the circumference to facilitate the processing of the relief groove and to facilitate the alignment of the relief groove with the locking ball position, so as to avoid misalignment between the relief groove and the locking ball position when the locking sleeve rotates.

[0051] In some embodiments, a support sleeve 37 is provided in the rod changing cavity 311. The support sleeve 37 is fitted in the rod changing cavity and is slidably connected to the rod changing cavity. A rod changing spring 38 is provided between the support sleeve 37 and the rod changing member 31. When the rod changing spring 38 is in a free state, it can push the support sleeve to the position of the locking ball and provide support for the locking ball.

[0052] When the change sleeve is completely removed from the change sleeve cavity, the lock ball may come out of the lock hole, making it inconvenient to use the change sleeve unit. Here, a support sleeve and a change sleeve spring are used. The change sleeve spring provides an outward force to the support sleeve. When the change sleeve is removed, the change sleeve spring pushes the support sleeve to move outward with the change sleeve, so that the support sleeve can move to the position of the lock ball and support the lock ball, thereby preventing the lock ball from falling into the change sleeve cavity.

[0053] A limiting groove 371 is provided on the support sleeve 37. The limiting groove 371 is a ring structure. During the unlocking operation, the locking ball is made to fall into the limiting groove by the cooperation between the limiting groove, the clearance groove and the locking ball, and by the force applied to the locking sleeve by the return spring, thereby locking the position of the support sleeve and preventing the support sleeve from coming out of the rod changing cavity.

[0054] When installing the cue sleeve, the cue sleeve pushes the support sleeve to the left, and the locking ball can lock the cue sleeve.

[0055] Reference Figure 2 The rotary unit of the pneumatic drill 20 and the rod changing member 31 can be connected by a transition member 21. One end of the transition member 21 is fixedly connected to the rotary unit, the connecting section of the rod changing member 31 is set as a conical structure, and the other end of the transition member 21 is set as a matching conical cavity, which can easily connect the rod changing member to the transition member.

[0056] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0057] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this utility model does not imply that the components are required to be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0058] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A drilling device for underground mine support anchor bolts, characterized in that, include: Air leg; A pneumatic drill, wherein the pneumatic drill is hinged to an air leg; The rod changing unit includes a rod changing component, a rod changing sleeve, and a rod changing assembly. The rod changing component is connected to the rotary unit of the pneumatic drill. The rod changing component has a rod changing cavity, and the rod changing sleeve is fitted into the rod changing cavity. The rod changing sleeve and the rod changing cavity are slidably connected. The rod changing sleeve has an installation cavity for installing anchor bolts. The rod changing assembly is configured to lock the rod changing sleeve in the rod changing cavity and to release the lock on the rod changing sleeve.

2. The underground mine support anchor drilling device according to claim 1, characterized in that, The installation cavity is a conical structure, and the ends of the anchor rod and drill rod are provided with conical joints that mate with the installation cavity. The anchor rod and drill rod are connected to the rod replacement sleeve through the joints.

3. The underground mine support anchor drilling device according to claim 1, characterized in that, The rod changing assembly includes a locking sleeve and a locking ball disposed in the locking hole of the rod changing component; A locking groove is provided on the change sleeve to cooperate with the locking ball. The lock sleeve is fitted on the change sleeve and can press the locking ball into the locking groove when the lock sleeve moves to a position above the locking ball.

4. The underground mine support anchor drilling device according to claim 3, characterized in that, There are multiple lock holes, lock balls, and locking grooves, and the lock holes and lock balls are distributed along the circumference of the rod.

5. The underground mine support anchor drilling device according to claim 3 or 4, characterized in that, The locking groove is an arc-shaped groove arranged along the circumference of the replacement sleeve.

6. The underground mine support anchor drilling device according to claim 3, characterized in that, The changing rod is provided with a limiting flange, and a return spring is provided between the limiting flange and the locking sleeve. A retaining ring that can limit the locking sleeve is provided on the other side of the changing rod.

7. The underground mine support anchor drilling device according to claim 6, characterized in that, A clearance groove is provided at one end of the lock sleeve, and when the locking ball enters the clearance groove, it can completely disengage from the locking groove.

8. The underground mine support anchor drilling device according to claim 7, characterized in that, The clearance groove is a ring structure arranged circumferentially.

9. The underground mine support anchor drilling device according to claim 3 or 7, characterized in that, A support sleeve is provided inside the pole changing cavity. The support sleeve is fitted inside the pole changing cavity and is slidably connected to the pole changing cavity. A pole changing spring is provided between the support sleeve and the pole changing component. When the pole changing spring is in a free state, it can push the support sleeve to the position of the locking ball and provide support for the locking ball.

10. The underground mine support anchor drilling device according to claim 9, characterized in that, The support sleeve is provided with a limiting groove, which is a ring structure.

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