Auxiliary device for mine anchor rod installation

Abstract

The invention relates to the technical field of anchor rod drilling machines, and discloses an auxiliary device for mine anchor rod installation, which comprises a pneumatic anchor rod drilling machine, a movable vertical frame and a connecting mechanism, the connecting mechanism comprises a sliding sleeve sliding outside the movable vertical frame, a connecting disc body is fixedly embedded in the sliding sleeve, and a height vertical plate is arranged on one side of the connecting disc body; the connecting disc body is arranged on one side of the movable vertical frame, the angle disc body is arranged on the other side of the connecting disc body, a connecting piece is arranged on the outer side of the angle disc body, the lifting mechanism is arranged outside the movable vertical frame and used for driving the connecting mechanism, and the stabilizing mechanism is arranged outside the movable vertical frame and used for locking the movable vertical frame and fixing the connecting mechanism. After the height of the pneumatic jumbolter is adjusted through the lifting mechanism, the angle of the pneumatic jumbolter is adjusted, and then air is supplied to the multi-stage air cylinder, so that the height and the angle of the pneumatic jumbolter can be fixed while the movable vertical frame is kept stable; therefore, the stability of the pneumatic jumbolter in the drilling process at the specific height and angle is ensured.

Description

Technical Field

[0001] This invention relates to the field of anchor drilling rig technology, and more specifically, to an auxiliary device for installing anchor bolts in mines. Background Technology

[0002] In mine tunnel excavation, the most common accidents are gas outbursts, water inrushes, and roof collapses. Pre-drilling is a crucial guarantee for preventing gas outbursts and water inrushes, and anchor bolt support in all directions ensures the stability and safety of the tunnel. Anchor bolt installation requires anchor bolt drilling rigs; to adapt to the narrow spaces of mine tunnels, single-unit anchor bolt drilling rigs are often used.

[0003] Existing single-unit anchor drilling rigs can be classified into roof anchor drilling rigs and side anchor drilling rigs according to the location where the anchor bolts are installed. Roof anchor drilling rigs often use pneumatic anchor drilling rigs, while side anchor drilling rigs often use handheld anchor drilling rigs. Pneumatic anchor drilling rigs drive the drill rod to rotate through a pneumatic motor. One end of the drill rod is supported by a multi-stage cylinder, while the other end uses compressed air as power to push the drill rod to drill a hole. The drilling depth can reach 20 meters. Handheld anchor drilling rigs drive the drill rod to rotate through a pneumatic motor, and the drill rod is pushed manually to drill a hole. The drilling depth is generally less than 2 meters.

[0004] During drilling operations in roadways, both the pneumatic and handheld anchor drilling rigs rely on manual support for fixation. However, the high-speed operation of the drilling rig generates severe vibrations, especially when the drill rod encounters hard rock interlayers or fissures. These severe vibrations far exceed the controllable range of human operation. In other words, manual fixation cannot guarantee the stability of drilling at specific heights and angles, which can easily cause the drill rod to deviate from the preset angle, resulting in skewed hole positions. Summary of the Invention

[0005] This invention provides an auxiliary device for installing mine anchor bolts, solving the technical problem in related technologies where manual fixing cannot guarantee the stability of drilling at specific heights and angles, leading to skewed hole positions.

[0006] This invention provides an auxiliary device for installing mine anchor bolts, including a pneumatic anchor bolt drilling rig and a movable support frame, which is installed inside the roadway;

[0007] A connecting mechanism is provided outside the movable upright frame. The connecting mechanism includes a sliding sleeve that slides outside the movable upright frame. A connecting disc is embedded inside the sliding sleeve. A height plate is provided on one side of the connecting disc, and an angle disc is provided on the other side of the connecting disc. A connecting piece for connecting to a pneumatic anchor drill is provided on the outside of the angle disc.

[0008] A lifting mechanism is located outside the movable upright and is used to drive the connecting mechanism;

[0009] A stabilizing mechanism is located on the outside of the movable frame. In operation, it is used to lock the movable frame and fix the connecting mechanism.

[0010] Preferably, the connecting plate has a vertical air chamber on its outside and a horizontal air chamber communicating with the vertical air chamber on its inside. Both ends of the horizontal air chamber are connected to a connecting air chamber. Piston limiting rods are symmetrically arranged inside the connecting air chambers, and a spring A is fixedly connected between the two opposing piston limiting rods.

[0011] Preferably, the height plate is fixedly connected to the movable stand, and the height plate has a plurality of height limiting holes symmetrically opened on the side near the connecting plate, and the two piston limiting rods near the height plate can enter the height limiting holes.

[0012] Preferably, the angle disc is rotatably connected to the outside of the connecting disc, and the angle disc is provided with a plurality of angle limiting holes at equal intervals on the side near the connecting disc, and the two piston limiting rods near the angle disc can enter the angle limiting holes.

[0013] Preferably, an indexing plate is fixedly sleeved on the outside of the connecting plate body, and an indexing pin is provided on the outside of the angle plate body.

[0014] Preferably, the connector includes a multi-stage telescopic rod fixedly connected to the outside of the angle disc body. The fixed end and the output end of the multi-stage telescopic rod are both fixedly connected to connecting rings via elbows. The two connecting rings are respectively fixedly connected to the outside of the air leg end and the outside of the air leg cylinder of the pneumatic anchor drill.

[0015] Preferably, the indexing plate has symmetrical vertical grooves on the side away from the connecting plate body, and a sliding block is slidably connected inside the vertical groove. Two limiting blocks that can abut against the sliding block are fixedly connected to the outside of the angle plate body.

[0016] Preferably, the lifting mechanism includes a winch and a fixed pulley block installed outside the movable frame. A wire rope is wound around the outside of the winch, and the end of the wire rope away from the winch passes around the fixed pulley block and is fixedly connected to the indexing plate.

[0017] Preferably, the stabilizing mechanism includes a multi-stage cylinder installed outside the movable stand. The output cylinder of the multi-stage cylinder has an axial air chamber inside. A piston abutting rod is provided inside the axial air chamber. A spring B is fixedly connected between the piston abutting rod and the axial air chamber. A connecting tube is fixedly connected between the axial air chamber and the vertical air chamber.

[0018] Preferably, the axial air chamber, the connecting hose, the vertical air chamber, the transverse air chamber, and the two connecting air chambers are all filled with compressed gas, and the stiffness coefficient of spring B is greater than that of the two springs A.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. This invention employs a combination of a connecting mechanism and a stabilizing mechanism. After adjusting the height of the pneumatic anchor drill using the lifting mechanism, the angle of the pneumatic anchor drill is adjusted. Then, by supplying air to the multi-stage cylinders, the moving frame remains stable while allowing the piston limit rod to enter the height limit hole and angle limit hole, thereby fixing the height and angle of the pneumatic anchor drill and ensuring the stability of the pneumatic anchor drill during drilling at specific heights and angles.

[0021] 2. This invention stabilizes the movable support frame by selecting support points at the top of the roadway, which not only avoids interference from equipment on both sides of the mine roadway, but also occupies the least amount of space in the mine roadway, greatly improving the operability of the pneumatic anchor drill in the already crowded mine roadway space.

[0022] 3. This invention keeps the movable support frame stable while fixing the height and angle of the pneumatic anchor drill, thus avoiding the need for bolt connections, which would require disassembly and reinstallation every time the height or angle is adjusted, thereby improving the drilling efficiency of the pneumatic anchor drill.

[0023] 4. The present invention employs a combination of limiting blocks and sliding blocks to ensure that the angle of the angle disc remains horizontal when not limited by the piston limiting rod, thus preventing the pneumatic anchor drill from being damaged by excessive deflection due to its own weight.

[0024] 5. This invention employs a multi-stage telescopic rod and connecting ring combination technique, enabling the connecting ring outside the air leg cylinder to extend and retract with the pneumatic anchor drill during the drilling process. Through the fixed-point connection at the air leg end and the moving-point connection at the air leg cylinder, the connection stability of the connecting parts to the pneumatic anchor drill can be improved. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a partial structural schematic diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the height plate and the angle plate in this invention;

[0028] Figure 4 This is a schematic diagram of the first split structure connecting the disk body and the angle disk body in this invention;

[0029] Figure 5 This is a schematic diagram of the second structure connecting the disk body and the angle disk body in this invention;

[0030] Figure 6 This is a schematic diagram of the first cross-sectional structure of the connecting disk in this invention;

[0031] Figure 7 This is a schematic diagram of the second cross-sectional structure of the connecting disk in this invention;

[0032] Figure 8 This is a schematic diagram of the connector structure in this invention;

[0033] Figure 9 This is a schematic diagram of the first structure of the lifting mechanism in this invention;

[0034] Figure 10 This is a schematic diagram of the second structure of the lifting mechanism in this invention;

[0035] Figure 11 This is a schematic diagram of the stabilizing mechanism in this invention;

[0036] Figure 12 for Figure 11 Enlarged view of the structure at point A in the image.

[0037] In the diagram: 100, pneumatic anchor drill; 200, movable support frame; 300, connecting mechanism; 310, sliding sleeve; 320, connecting disc; 321, piston limit rod; 322, return spring A; 330, height plate; 331, height limit hole; 340, angle disc; 341, angle limit hole; 350, connector; 351, multi-stage telescopic rod; 352, connecting ring; 360, sliding stop block; 370, limit stop block; 400, lifting mechanism; 410, wire rope; 500, stabilizing mechanism; 510, multi-stage cylinder; 520, piston abutment rod; 530, return spring B; 540, connecting hose. Detailed Implementation

[0038] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0039] like Figure 1As shown, this embodiment provides an auxiliary device for installing mine anchor bolts, including a pneumatic anchor bolt drill 100. The pneumatic anchor bolt drill 100 is existing technology. The specific structure of the pneumatic anchor bolt drill 100 is not described in detail in this embodiment. The pneumatic anchor bolt drill 100 vibrates significantly during drilling, and manual fixation alone is insufficient to maintain stability during the drilling process; a stable support frame is required. The device also includes:

[0040] The mobile support frame 200 is installed inside the roadway. The mobile support frame 200 includes a mobile chassis that can move inside the roadway. The casters at the bottom of the mobile chassis are equipped with caster brakes. A column is fixedly connected to the top of the mobile chassis. The height of the mine roadway is generally 2 to 3.5 meters, and the height of the horizontal drilling required in the roadway side is generally 0.4 to 1.5 meters. In order to make the pneumatic anchor drilling rig 100 have good versatility, the height of the mobile support frame 200 should allow the pneumatic anchor drilling rig 100 to be adjustable at any position between 0.4 and 1.5 meters.

[0041] The connecting mechanism 300 is located outside the movable support frame 200. The connecting mechanism 300 is used to connect the pneumatic anchor drill 100, so that the pneumatic anchor drill 100 can be adjusted to a specific height (within the height range of the movable support frame 200) and angle (within the 180° angle range of the vertical plane) on the movable support frame 200, thereby drilling holes in the roof and sidewalls of the mine roadway.

[0042] The lifting mechanism 400 is located outside the movable support frame 200 and is used to drive the connecting mechanism 300 to change the height of the pneumatic anchor drilling rig 100.

[0043] The stabilizing mechanism 500 is located outside the movable support 200. In the working state, it is used to lock the movable support 200 and fix the connecting mechanism 300 to stabilize the pneumatic anchor drill 100 during the drilling process.

[0044] In order to achieve the stability requirements of drilling at specific heights, angles (within the height range of the movable support frame 200), and angles (within the 180° angle range of the vertical plane) of the pneumatic anchor drilling rig 100, the connecting mechanism 300 needs to have the functions of adjusting the angle and positioning the pneumatic anchor drilling rig 100.

[0045] Among them, such as Figure 2 - Figure 8As shown, the connecting mechanism 300 includes a sliding sleeve 310 that slides outside the movable support frame 200. A connecting disc 320 is embedded inside the sliding sleeve 310. A height plate 330 is provided on one side of the connecting disc 320. There is a gap between the height plate 330 and the connecting disc 320. An angle disc 340 is provided on the other side of the connecting disc 320. A connector 350 that connects to the pneumatic anchor drill 100 is provided on the outer side of the angle disc 340. When the connecting disc 320 drives the angle disc 340 and the connector 350 to slide, the height of the pneumatic anchor drill 100 can be adjusted. When the angle disc 340 drives the connector 350 to rotate, the angle of the pneumatic anchor drill 100 can be adjusted.

[0046] A vertical air chamber is provided on the outside of the connecting disc 320, and a horizontal air chamber is provided inside the connecting disc 320 that communicates with the vertical air chamber. Both ends of the horizontal air chamber are connected to a connecting air chamber. Piston limiting rods 321 are symmetrically arranged inside the connecting air chamber. A spring A322 is fixedly connected between the two opposing piston limiting rods 321. If compressed gas enters the interior of the two connecting air chambers through the vertical air chamber and the horizontal air chamber, the two opposing piston limiting rods 321 will move in a direction away from each other and stretch the spring A322.

[0047] The height plate 330 is fixedly connected to the movable support frame 200. Multiple height limiting holes 331 are symmetrically opened on the side of the height plate 330 near the connecting plate 320. Two piston limiting rods 324 near the height plate 330 can enter the height limiting holes 331. When the two piston limiting rods 324 enter the height limiting holes 331, they can fix the height of the connecting plate 320, the angle plate 340 and the connecting piece 350, thereby fixing the height of the pneumatic anchor drilling machine 100.

[0048] Angle disc 340 is rotatably connected to the outside of connecting disc 320. Multiple angle limiting holes 341 are equidistantly provided on the side of angle disc 340 near connecting disc 320. Two piston limiting rods 321 near angle disc 340 can enter the angle limiting holes 341. When the two piston limiting rods 321 enter the angle limiting holes 341, they can fix the angle of angle disc 340 and connecting piece 350, thereby fixing the angle of pneumatic anchor drilling machine 100.

[0049] An indexing plate is fixedly sleeved on the outside of the connecting plate body 320, and an indexing pin is provided on the outside of the angle plate body 340. When the angle plate body 340 is rotated, the alignment of the angle limiting hole 341 and the piston limiting rod 321 can be determined by observing the alignment of the indexing pin and the indexing plate.

[0050] A vertical sliding groove is symmetrically provided on the side of the indexing plate away from the connecting plate body 320. A sliding block 360 is slidably connected inside the vertical sliding groove. Two limiting blocks 370 that can abut against the sliding block 360 are fixedly connected to the outside of the angle plate body 340. By setting the limiting blocks 370 and the sliding blocks 360, when the two piston limiting rods 321 are disengaged from the angle limiting hole 341, the angle of the angle plate body 340 can be maintained in a horizontal state, so as to prevent the pneumatic anchor drilling machine 100 from being damaged by excessive deflection due to its own weight and impacting the ground.

[0051] The connector 350 includes a multi-stage telescopic rod 351 fixedly connected to the outside of the angle disc body 340. The fixed end and the output end of the multi-stage telescopic rod 351 are both fixedly connected to a connecting ring 352 through an elbow. The two connecting rings 352 are respectively fixedly connected to the outside of the air leg end and the outside of the air leg cylinder of the pneumatic anchor drill 100. During the drilling process of the pneumatic anchor drill 100, the connecting ring 352 outside the air leg cylinder extends with it. Through the fixed point connection of the air leg end and the moving point connection of the air leg cylinder, the connection stability of the connector 350 to the pneumatic anchor drill 100 can be improved.

[0052] Among them, such as Figure 9 - Figure 10 As shown, the lifting mechanism 400 includes a winch and a fixed pulley block installed outside the movable frame 200. A wire rope 410 is wound around the outside of the winch. The end of the wire rope 410 away from the winch passes around the fixed pulley block and is fixedly connected to the indexing plate. By starting the winch, the winch can pull up or lower the connecting mechanism 300 to adjust the height of the pneumatic anchor drilling rig 100.

[0053] Among them, such as Figure 11 - Figure 12 As shown, the stabilizing mechanism 500 includes a multi-stage cylinder 510 installed outside the movable support frame 200. By supplying air to the multi-stage cylinder 510, it can be pushed up to the top of the roadway to provide support for the movable support frame 200, so that the movable support frame 200 can remain stable. There are tunneling, transportation and support equipment on both sides of the mine roadway. Therefore, selecting a support point at the top of the roadway can not only avoid interference from other equipment, but also occupy the least amount of mine roadway space. Thus, in the already crowded mine roadway space, the operability of the pneumatic anchor drill 100 is greatly improved.

[0054] The output cylinder of the multi-stage cylinder 510 has an axial air chamber inside, and a piston abutment rod 520 is installed inside the axial air chamber. A spring B530 is fixedly connected between the piston abutment rod 520 and the axial air chamber. A connecting hose 540 is fixedly connected between the axial air chamber and the vertical air chamber. The axial air chamber, the connecting hose 540, the vertical air chamber, the horizontal air chamber, and the two connecting air chambers are all filled with compressed gas. When the multi-stage cylinder 510 supplies air to the top of the tunnel, the piston abutment rod 520 is pressed downward to compress the axial air. The compressed gas inside the cavity causes a surge in air pressure inside the two connected air chambers, which in turn causes the two piston limiting rods 324 to enter the height limiting hole 331 and the other two piston limiting rods 321 to enter the angle limiting hole 341, thereby fixing the height and angle of the pneumatic anchor drilling machine 100. The stiffness coefficient of spring B530 is greater than that of the two springs A322 to ensure that the piston limiting rods 321 can be smoothly reset, thus facilitating the adjustment of the height and angle of the pneumatic anchor drilling machine 100.

[0055] The above structure enables the movable support frame 200 to maintain stability while fixing the height and angle of the pneumatic anchor drill 100, thereby ensuring the stability of the pneumatic anchor drill 100 during drilling at a specific height and angle.

[0056] The specific working principle of this implementation is: Figure 1 Taking the positional status of each component as an example, when drilling holes in the roadway sidewall to assist in the installation of anchor bolts, since the drilling direction in the sidewall is horizontal, and the angle of the pneumatic anchor bolt drill 100 is maintained in a horizontal state through the contact between the limiting block 370 and the sliding block 360, there is no need to adjust the angle of the pneumatic anchor bolt drill 100. The specific operation is as follows:

[0057] First, push the entire device to the corresponding position, then step on the caster brake at the bottom of the mobile stand 200 to achieve the initial positioning of the mobile stand 200. Then start the winch so that the wire rope 410 in the winch is lowered to the connecting mechanism 300 to reduce the height of the pneumatic anchor drill 100. When the pneumatic anchor drill 100 has descended to the lowest drilling position of the roadway sidewall, turn off the winch.

[0058] Subsequently, air is supplied to the multi-stage cylinder 510 to stabilize the moving support 200. During the process of the multi-stage cylinder 510 contacting the top of the tunnel, the piston abutment rod 520 is pressed downward to squeeze the compressed gas inside the axial air chamber. The compressed gas enters the two connected air chambers through the connecting hose 540, the vertical air chamber, and the horizontal air chamber. The compressed gas entering the two connected air chambers causes the internal air pressure to increase sharply, and pushes the two piston limiting rods 321 inside to move away from each other and stretch the spring A322, so that the two piston limiting rods 324 enter the height limiting hole 331 and the other two piston limiting rods 321 enter the angle limiting hole 341, thereby fixing the height and angle of the pneumatic anchor drilling rig 100.

[0059] Then, the pneumatic anchor drill 100 is used to drill horizontal holes in the sidewall of the roadway. During the drilling process, the connecting ring 352 outside the air leg cylinder of the pneumatic anchor drill 100 extends with it. Through the fixed point connection at the end of the air leg and the moving point connection of the air leg cylinder, the connection stability of the connecting piece 350 to the pneumatic anchor drill 100 can be improved.

[0060] After completing the horizontal drilling at this height, some of the gas inside the multi-stage cylinder 510 is released so that it no longer contacts the top of the tunnel, so that the piston abutment rod 520 is reset by spring B530 and the piston limit rod 321 is reset by spring A322. At this time, the height and angle of the pneumatic anchor drilling machine 100 are no longer fixed. Then, the winch is started to lift the pneumatic anchor drilling machine 100 to the corresponding height, and the above operation can continue to carry out the drilling work at the next height.

[0061] The height of mine roadways is generally 2 to 3.5 meters, and the height of horizontal boreholes required for the roadway sides is generally 0.4 to 1.5 meters. Therefore, the pneumatic anchor drilling rig 100 should be adjustable at any position between 0.4 and 1.5 meters.

[0062] When drilling inclined holes in the tunnel roof to assist in the installation of anchor bolts, the operation is similar, but an additional step of adjusting the pneumatic anchor bolt drill 100 degrees is required. The specific operation for adjusting the pneumatic anchor bolt drill 100 degrees is as follows:

[0063] After ensuring the entire device is moved to the corresponding position, adjust the height of the pneumatic anchor drill 100, and then rotate the angle disc 340 so that it drives the pneumatic anchor drill 100 to rotate through the connecting piece 350. When rotating the angle disc 340, observe the alignment of the indexing needle with the indexing disc to determine the alignment of the angle limiting hole 341 with the piston limiting rod 321. After the pneumatic anchor drill 100 rotates to the corresponding angle, supply air to the multi-stage cylinder 510 to stabilize the moving support 200 while fixing the height and angle of the pneumatic anchor drill 100.

[0064] Then, similarly, the pneumatic anchor drill 100 can be used to drill inclined holes in the roadway roof. After completing the inclined drilling at this angle, some of the gas inside the multi-stage cylinder 510 is released, and the pneumatic anchor drill 100 is adjusted to rotate to the corresponding angle. Then, the above operation can be continued to drill at the next angle.

[0065] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. An auxiliary device for installing mine anchor bolts, comprising a pneumatic anchor bolt drilling rig (100), characterized in that, Also includes: A movable support frame (200) is installed inside the tunnel; A connecting mechanism (300) is provided outside the movable support frame (200). The connecting mechanism (300) includes a sliding sleeve (310) that slides outside the movable support frame (200). A connecting disc (320) is embedded inside the sliding sleeve (310). A height plate (330) is provided on one side of the connecting disc (320), and an angle disc (340) is provided on the other side of the connecting disc (320). A connector (350) for connecting to the pneumatic anchor drill (100) is provided on the outside of the angle disc (340). A lifting mechanism (400) is disposed outside the movable support frame (200) and is used to drive the connecting mechanism (300). A stabilizing mechanism (500) is provided on the outside of the movable stand (200). In the working state, it is used to lock the movable stand (200) and fix the connecting mechanism (300).

2. The auxiliary device for installing mine anchor bolts according to claim 1, characterized in that, The connecting disc (320) has a vertical air chamber on its outside and a horizontal air chamber that communicates with the vertical air chamber on its inside. Both ends of the horizontal air chamber are connected to a connecting air chamber. Piston limiting rods (321) are symmetrically arranged inside the connecting air chamber. A spring A (322) is fixedly connected between the two opposing piston limiting rods (321).

3. The auxiliary device for installing mine anchor bolts according to claim 2, characterized in that, The height plate (330) is fixedly connected to the movable stand (200). The height plate (330) has a plurality of height limiting holes (331) symmetrically opened on the side near the connecting plate (320). Two piston limiting rods (324) near the height plate (330) can enter the height limiting hole (331).

4. The auxiliary device for installing mine anchor bolts according to claim 3, characterized in that, The angle disc (340) is rotatably connected to the outside of the connecting disc (320). The angle disc (340) has multiple angle limiting holes (341) equidistantly opened on the side of the angle disc (340) near the connecting disc (320). The two piston limiting rods (321) near the angle disc (340) can enter the angle limiting holes (341).

5. The auxiliary device for installing mine anchor bolts according to claim 4, characterized in that, The connecting disc body (320) is fixedly fitted with an indexing disc, and the angle disc body (340) is provided with an indexing needle.

6. The auxiliary device for installing mine anchor bolts according to claim 5, characterized in that, The connector (350) includes a multi-stage telescopic rod (351) fixedly connected to the outside of the angle disc body (340). The fixed end and the output end of the multi-stage telescopic rod (351) are both fixedly connected to a connecting ring (352) through an elbow. The two connecting rings (352) are respectively fixedly connected to the outside of the air leg end and the outside of the air leg cylinder of the pneumatic anchor drill (100).

7. An auxiliary device for installing mine anchor bolts according to claim 6, characterized in that, The indexing plate has vertical grooves symmetrically provided on the side away from the connecting plate body (320). A sliding block (360) is slidably connected inside the vertical groove. Two limiting blocks (370) that can abut against the sliding block (360) are fixedly connected to the outside of the angle plate body (340).

8. An auxiliary device for installing mine anchor bolts according to claim 7, characterized in that, The lifting mechanism (400) includes a winch and a fixed pulley block installed outside the movable frame (200). A wire rope (410) is wound around the outside of the winch. The end of the wire rope (410) away from the winch passes around the fixed pulley block and is fixedly connected to the indexing plate.

9. An auxiliary device for installing mine anchor bolts according to claim 8, characterized in that, The stabilizing mechanism (500) includes a multi-stage cylinder (510) installed outside the movable stand (200). The output cylinder of the multi-stage cylinder (510) has an axial air chamber inside. A piston abutment rod (520) is provided inside the axial air chamber. A spring B (530) is fixedly connected between the piston abutment rod (520) and the axial air chamber. A connecting hose (540) is fixedly connected between the axial air chamber and the vertical air chamber.

10. An auxiliary device for installing mine anchor bolts according to claim 9, characterized in that, The axial air chamber, the connecting tube (540), the vertical air chamber, the horizontal air chamber, and the two connecting air chambers are all filled with compressed gas. The spring coefficient of spring B (530) is greater than the spring coefficients of the two springs A (322).

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