CN215369902U - Anchor rod recovery device - Google Patents

Abstract

The utility model discloses an anchor rod recovery device which comprises an anchor rod recovery device body, wherein a core drill bit is arranged on the outer surface of one end of the anchor rod recovery device body, a large-diameter thin-wall drill spiral drill rod is arranged on the outer surface of one side of the core drill bit, a core claw is arranged on the outer surface of one side of the large-diameter thin-wall drill spiral drill rod, a joint is arranged on the outer surface of the other end of the anchor rod recovery device body, the core drill bit comprises a drill bit body, a hard alloy tool bit and a wear-resisting ring, the hard alloy tool bit is positioned on the outer surface of one end of the drill bit body, and the wear-resisting ring is positioned in the middle of the drill bit body. The anchor rod recovery device provided by the utility model solves the anchor rod recovery problem, provides foundation guarantee for safe and efficient recovery work, reduces the labor intensity of miners, improves the efficiency, and ensures the safety of staff.

Description

Anchor rod recovery device

Technical Field

The utility model relates to the technical field of anchor rod recovery devices used for underground coal mine anchor rod drilling rigs, in particular to an anchor rod recovery device.

Background

The general needs in the supporting technology that the mine tunnel adopted use spiral stock as reinforcing material, but the colliery often can carry out the stope to the tunnel in process of production, and the stock of usefulness is difficult to take out as reinforcing, very easily causes the accident:

1. the reserved reinforcing anchor rod can damage a cutter of the coal cutter, and meanwhile, if sparks generated after the anchor rod and the coal cutter are collided with locally accumulated gas, gas explosion accidents are easily caused to bring serious potential safety hazards to underground production;

2. if the anchor rod entering the coal flow system cannot be taken out in time, accidents of the transportation machinery can be caused, and even serious consequences of tearing the adhesive tape of the adhesive tape conveyor can be caused. The mode of often taking out the stock of coal flow system in the production process of stopping the scraper conveyor will cause the reduction of working face equipment rate of opening like this, and the stock that twines on the coal machine cylinder also needs to spend manpower and time to get the stock simultaneously, and the production of working face is seriously influenced to this kind of mode of handling the stock.

In the process of fully mechanized mining face mining at present, the general process is as follows when the anchor rod is taken by cutting the end (tail) by mistake: when the cutter of the coal mining machine is mistaken, the coal body in the triangular area is arched and loosened, and then the anchor rod is taken out, but the method is difficult to master after falling, so that great potential safety hazards exist, and safety accidents and electromechanical accidents frequently occur.

Disclosure of Invention

The utility model mainly aims to provide an anchor rod recovery device which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides an anchor rod recovery unit, includes the anchor rod recovery unit body, the one end surface of anchor rod recovery unit body is provided with gets the core drill bit, one side surface of getting the core drill bit is provided with the major diameter thin wall and bores auger stem, one side surface that the major diameter thin wall bored auger stem is provided with the rock core claw, the other end surface of anchor rod recovery unit body is provided with the joint.

Preferably, the core bit comprises a bit body, a hard alloy cutter head and a wear-resisting ring, wherein the hard alloy cutter head is positioned on the outer surface of one end of the bit body, and the wear-resisting ring is positioned in the middle of the bit body.

Preferably, a fixing assembly is arranged between the drill bit body and the hard alloy cutter head, the outer surface of one end of the drill bit body is fixedly connected with the outer surface of one end of the hard alloy cutter head through the fixing assembly, and the drill bit body is fixedly connected with the wear-resistant ring.

Preferably, the large-diameter thin-wall drill spiral drill rod comprises a high-strength geological pipe alloy pipe and wear-resistant spiral strip steel, and the wear-resistant spiral strip steel is positioned on the outer wall of the high-strength geological pipe alloy pipe.

Preferably, the wear-resistant spiral strip steel is processed on the outer wall of the high-strength geological pipe alloy pipe through mechanical equipment.

Preferably, the core gripper comprises a clamping block, a stop block, a spring and a pin shaft, the stop block is located on the outer surface of the upper end of the clamping block, the spring is located on the outer surface of the front end of the stop block, and the pin shaft is located on the outer surface of the front end of the clamping block.

Preferably, the clamping block is fixedly connected with the stop block, the stop block is detachably connected with the spring, and the clamping block is fixedly connected with the pin shaft.

Compared with the prior art, the utility model has the following beneficial effects: connecting a core claw with an anchor rod through threads, sleeving a core drill bit on the core claw, connecting the core drill bit with a gyrator through a joint, starting the gyrator, selecting proper rotating speed and propelling force according to actual conditions, wherein the core drill bit is in a horn mouth form, so that the core claw can enable the anchor rod to be left in a large-diameter thin-wall drill auger stem; the core drill bit enters the top plate to move forwards, the anchor rod and the core claw move backwards relatively to reach an agnail position, the core claw is clamped in the drill rod under the action of the spring, the gyrator retreats until the core drill bit completely departs from the coal bed, and then the rotation and retreat are stopped, because the core claw is clamped in the drill rod, the drill rod does not retreat together, the whole set of anchor withdrawing drilling tool is manually pulled out of the gyrator, the drill rod is taken out, the anchor rod is manually recovered, the labor intensity is high, the danger coefficient is high, the efficiency is low, the structure does not need to consider the influence of the anchoring force and the rod body strength on the recovery, and the reliability is high; the method does not damage the surrounding rock of the roadway and has strong safety; the original section and the strength of the rod body are not damaged, and the reuse rate is high; the operation is convenient, the recovery speed is high, and the inner diameter of the hollow drill rod is larger than that of the anchor rod; the anchor rod is convenient to drill, the wear-resistant ring structure is adopted, and the service life of the device is prolonged; the horn mouth form ensures that the anchor rod does not fall out during retraction; the spiral drill rod structure can discharge coal dust when drilling into the anchor rod, and the whole anchor rod recovery device is simple in structure, convenient to operate and better in using effect compared with a traditional mode.

Drawings

Fig. 1 is a schematic overall structure view of an anchor rod recovery device of the present invention;

fig. 2 is a schematic structural view of a rock bolt retrieving apparatus of the present invention, showing a coring bit 2 in fig. 1;

FIG. 3 is a schematic structural view of the large-diameter thin-wall auger 3 of FIG. 1;

fig. 4 is a schematic structural view of the rock core claw 4 in fig. 1 of the anchor rod recovery device.

In the figure: 1. an anchor rod recovery device body; 2. a coring bit; 3. drilling a spiral drill rod on a large-diameter thin wall; 4. a core claw; 5. a joint; 201. a bit body; 202. a cemented carbide tip; 203. a wear ring; 301. high-strength geological pipe alloy pipe; 302. wear-resistant spiral strip steel; 401. a clamping block; 402. a stopper; 403. a spring; 404. and (7) a pin shaft.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1-4, an anchor rod recovery device comprises an anchor rod recovery device body 1, wherein a core drill bit 2 is arranged on the outer surface of one end of the anchor rod recovery device body 1, a large-diameter thin-wall auger screw rod 3 is arranged on the outer surface of one side of the core drill bit 2, a core claw 4 is arranged on the outer surface of one side of the large-diameter thin-wall auger screw rod 3, and a joint 5 is arranged on the outer surface of the other end of the anchor rod recovery device body 1.

Example two:

on the basis of the first embodiment, as shown in fig. 2, a fixing assembly is arranged between the bit body 201 and the cemented carbide tip 202, the outer surface of one end of the bit body 201 is fixedly connected with the outer surface of one end of the cemented carbide tip 202 through the fixing assembly, the bit body 201 is fixedly connected with the wear-resistant ring 203, the wear-resistant ring 203 does not damage the original section and strength of the shank, and the reuse rate is high.

Example three:

on the basis of the first embodiment and the second embodiment, as shown in fig. 3, the wear-resistant spiral strip steel 302 is machined on the outer wall of the high-strength geological tubular alloy pipe 301 through mechanical equipment, and the high-strength geological tubular alloy pipe 301 can prolong the service life of the whole structure.

Example four:

on the basis of the first embodiment, the second embodiment and the third embodiment, as shown in fig. 4, the clamping block 401 is fixedly connected with the stop block 402, the stop block 402 is detachably connected with the spring 403, the clamping block 401 is fixedly connected with the pin 404, and the spring 403 makes the overall structure convenient to operate and improves the rod body recovery speed.

The utility model relates to an anchor rod recovery device, wherein a core claw 4 is connected with an anchor rod through threads, a core bit 2 is sleeved on the core claw 4 and is connected with a gyrator through a joint 5, the gyrator is started, proper rotating speed and propelling force are selected according to actual conditions, and the core bit 2 is in a horn mouth shape, so that the core claw 4 can enable the anchor rod to be left in a large-diameter thin-wall drill spiral drill rod 3; the core bit 2 enters the top plate to move forwards, the anchor rod and the core claw 4 move backwards relatively to reach an agnail position, the core claw 4 is clamped in the drill rod under the action of the spring 403, the gyrator is retreated until the core bit 2 completely departs from the coal bed and stops rotating and retreating, the drill rod does not retreat together due to the fact that the core claw 4 is clamped in the drill rod, the whole set of anchor retreating drilling tool is manually pulled out of the gyrator, the drill rod is taken out, compared with the manual recovery of the anchor rod, the labor intensity is high, the danger coefficient is high, the efficiency is low, the structure does not need to consider the influence of anchoring force and rod body strength on the recovery, and the reliability is high; the method does not damage the surrounding rock of the roadway and has strong safety; the original section and the strength of the rod body are not damaged, and the reuse rate is high; the operation is convenient, the recovery speed is high, and the inner diameter of the hollow drill rod is larger than that of the anchor rod; the anchor rod is conveniently drilled, the wear-resistant ring 203 is structured, and the service life of the device is prolonged; the horn mouth form ensures that the anchor rod does not fall out during retraction; the spiral drill rod structure can discharge coal dust when drilling, and is practical.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides an anchor rod recovery unit, includes anchor rod recovery unit body (1), its characterized in that: the one end surface of stock recovery unit body (1) is provided with coring bit (2), one side surface of coring bit (2) is provided with major diameter thin wall and bores auger stem (3), one side surface that major diameter thin wall bored auger stem (3) is provided with rock core claw (4), the other end surface of stock recovery unit body (1) is provided with joint (5).

2. A rock bolt retrieval apparatus according to claim 1, wherein: the core bit (2) comprises a bit body (201), a hard alloy cutter head (202) and a wear-resisting ring (203), wherein the hard alloy cutter head (202) is positioned on the outer surface of one end of the bit body (201), and the wear-resisting ring (203) is positioned in the middle of the bit body (201).

3. A rock bolt retrieval apparatus according to claim 2, wherein: a fixing assembly is arranged between the bit body (201) and the hard alloy cutter head (202), the outer surface of one end of the bit body (201) is fixedly connected with the outer surface of one end of the hard alloy cutter head (202) through the fixing assembly, and the bit body (201) is fixedly connected with the wear-resistant ring (203).

4. A rock bolt retrieval apparatus according to claim 1, wherein: the large-diameter thin-wall drilling spiral drill pipe (3) comprises a high-strength geological pipe alloy pipe (301) and wear-resistant spiral strip steel (302), and the wear-resistant spiral strip steel (302) is located on the outer wall of the high-strength geological pipe alloy pipe (301).

5. A rock bolt retrieval device according to claim 4, wherein: the wear-resistant spiral strip steel (302) is processed on the outer wall of the high-strength geological pipe alloy pipe (301) through mechanical equipment.

6. A rock bolt retrieval apparatus according to claim 1, wherein: the core claw (4) comprises a clamping block (401), a stop block (402), a spring (403) and a pin shaft (404), wherein the stop block (402) is located on the outer surface of the upper end of the clamping block (401), the spring (403) is located on the outer surface of the front end of the stop block (402), and the pin shaft (404) is located on the outer surface of the front end of the clamping block (401).

7. An anchor rod retrieving device according to claim 6, wherein: the clamping block (401) is fixedly connected with the stop block (402), the stop block (402) is detachably connected with the spring (403), and the clamping block (401) is fixedly connected with the pin shaft (404).

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