CN205936476U - Tunnel quick core drill of bottom plate anchorage holes advances device - Google Patents

Abstract

The utility model relates to a rapid core drilling device for the anchor hole of the bottom plate of the roadway. The end has an interface connected with a special connecting piece. One end of the connecting piece is connected to the drill pipe, and the other end is connected to the extension rod. The joint between the drill pipe and the connecting piece is provided with a fixing pin, which can effectively prevent the relative sliding of the two parts and the drilling To solve the problem of rod falling off, the extension rod can be quickly connected to the drill pipe through the connecting piece, so as to increase the depth of coring in the anchor hole. The utility model has the advantages of simple structure and convenient operation, greatly improves the drilling speed and hole forming depth of anchor holes in the bottom plate, and is an innovation on the drilling device for the bottom plate of the roadway.

Description

A rapid core drilling device for the anchor hole of the floor of the roadway

technical field

The utility model relates to a drilling device for the bottom plate of a roadway, in particular to a fast core drilling device for an anchor hole of the bottom plate of a roadway.

Background technique

With the continuous increase of coal mining depth in our country, the roadway floor heave phenomenon is becoming more and more serious, and floor bolt support is one of the effective methods to control the roadway floor heave. At present, the drilling equipment and slag removal methods for the anchor hole of the roadway floor mainly include: drilling with the roof anchor drill and its drill pipe, and discharging slag through high-pressure air blowing holes or high-pressure water punching; The spiral channel of the drill pipe is used for slagging; the full hydraulic tunnel drilling rig is used for drilling with high-strength propulsion. The above-mentioned equipment and methods are faced with problems such as difficulty in removing cuttings, mismatch between hole diameter, anchoring agent diameter and anchor rod diameter, and slow hole forming speed. Therefore, the development of a roadway floor drilling device with small hole diameter, fast drilling speed and satisfactory drilling depth is the key problem to solve the roadway floor bolt support, so its improvement and innovation are imperative.

Contents of the invention

Aiming at the deficiencies in the prior art, the utility model provides a rapid core drilling device for the anchor hole of the roadway floor, which can effectively solve the problems of bulky drilling equipment, large hole diameter, slow drilling speed and shallow drilling.

The utility model adopts the following technical scheme, which is a rapid coring drilling device for the anchor hole of the roadway floor, which is mainly composed of an extension rod 1, a drilling rig connecting rod 2, a connecting piece 3, and a coring drill rod 4, and is characterized in that The head of the drill rod 4 includes six drill teeth 13, the upper end of the drill teeth 13 has a tooth edge 14, the outer surface of the middle part of the drill rod 14 has a spiral channel 12, and the end of the drill rod 4 body is provided with a pin port 11 to connect with the end of the connector 3 , the connecting piece 3 can be connected with the extension rod 1 .

The utility model is novel and unique in structure, simple in operation, convenient in use, greatly improves the drilling speed and hole depth of the anchor rod hole on the bottom plate, and is an innovation on the bottom plate drilling device.

Description of drawings

Fig. 1 is the front view of connecting rod in the utility model.

Fig. 2 is the front view of the connecting rod of the drilling rig in the utility model.

Fig. 3 is a front view of the connector in the utility model.

Fig. 4 is a front view of the core drill rod in the utility model.

Fig. 5 is a top view of the core drilling rod in the utility model.

detailed description

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

As shown in the accompanying drawings 1-5, a rapid coring drilling device for the anchorage hole of the roadway floor mainly includes an extension rod, a drilling rig connecting rod, a connecting piece, and a coring drill rod. The head of the drill rod 4 includes six drill teeth 13 , the upper end of the drill tooth 13 has a tooth edge 14, the outer surface of the middle part of the drill rod 4 has a spiral channel 12, and the end of the drill rod 4 is provided with a pin port 11 to connect with the end of the connector 3, and the connector 3 can be connected with the extension rod 1 , wherein the extension rod, the connecting rod of the drilling rig, the connector, and the coring drill rod have water holes 5.

In order to ensure the use effect, the six drill teeth 13 on the head of the drill rod 4 are evenly distributed on the end face, with a gap structure between them, and the tooth edge 14 is formed of diamond at the upper right part of the drill teeth 13 .

Said spiral channel 12 is under the notch structure of the drill rod 4, and each circles 0.4 circles along the body of the drill rod 4, and is evenly distributed on the outer surface of the drill rod 4.

The end of the drill rod 4 has two axisymmetric rotating pin openings 11 which are rotationally connected with the two pins 9 at the end of the connector 3 .

The threaded head 10 at the end of the connector 3 is connected to the threaded interface at the end of the extension rod 1, and a sealing ring 8 is placed at the end to place a rubber ring.

There is a hexagonal joint at the end of the connecting rod 2 of the drilling rig that can be connected with the drilling rig, and a threaded interface at the end that can be connected with the threaded joint at the end of the connecting piece 3 or the extension rod 1 .

The use of the utility model is as follows: first step, in the coal mine roadway, the drill pipe 4 is connected with the drilling machine connecting rod 2 through the connecting piece 3, and then connected with the drilling machine; the second step is to start the drilling machine, and the drill pipe 4 ends The bottom drill teeth 13 and tooth blades 14 are used for rock-breaking drilling, and the core is taken out. The spiral passage around the rod body can eliminate the cuttings generated during the drilling process; the third step is to open the connecting piece 3 and the connecting rod 2 of the drilling rig, and the drill rod 4 It is connected with the extension rod 1 through the connecting piece 3, and the extension rod 1 is connected with the drilling rig connecting rod 2, and continues drilling to reach the required drilling depth.

In the utility model, the connecting part 3 and the drill pipe 4 have a pin and a rotating pin port to rotate and dock, which can effectively transmit the torque of the drilling rig, and prevent the drill pipe from falling off when the drill is taken out, and the end of the connecting part has a sealing ring, To ensure the smooth water inlet in the middle, anchor rods and anchor cables need anchor holes with different diameters, which can be realized by replacing core drill pipes with different diameters.

The drill pipe of the utility model can be quickly extended, and the diameter of the anchor hole is matched with the diameter of the anchoring agent, anchor rod and anchor cable, and the disassembly and assembly are convenient and quick, which increases the depth of the anchor hole and the drilling speed, and improves the anchorage of the roadway floor. The hole drilling efficiency is reduced, the hole forming time is reduced and the labor intensity of the workers is reduced, thereby improving the work efficiency, enabling the floor bolt support technology to be popularized and applied in a large area, and has significant economic and social benefits.

Claims (6)

1. the quick coring drilling apparatus of a kind of roadway floor anchor hole, this device is by extension bar（1）, rig connecting rod（2）, connect Part（3）, coring drill rod（4）Deng composition it is characterised in that drilling rod（4）Head includes six brill teeth（13）, bore tooth（13）Upper end has Land（14）, drilling rod（4）Center outer surface has helical duct（12）, drilling rod（4）Body of rod end is provided with pin mouth（11）Be connected Part（3）End is connected, connector（3）Can be with extension bar（1）It is connected.

2. a kind of quick coring drilling apparatus of roadway floor anchor hole according to claim 1 are it is characterised in that described Drilling rod（4）Six brill teeth of head（13）, be evenly distributed on end face, between have gap structure, land（14）Boring tooth（13）'s Upper right quarter, is made up of diamond.

3. a kind of quick coring drilling apparatus of roadway floor anchor hole according to claim 1 are it is characterised in that described Helical duct（12）In drilling rod（4）Under gap structure, each is along drilling rod（4）The body of rod, around 0.4 circle, is evenly distributed on drilling rod（4）Bar External surface.

4. a kind of quick coring drilling apparatus of roadway floor anchor hole according to claim 1 are it is characterised in that described Drilling rod（4）There is the revolving pin mouth of two axial symmetry end（11）With connector（3）Two pins of end（9）Rotation is right Connect.

5. a kind of quick coring drilling apparatus of roadway floor anchor hole according to claim 1 are it is characterised in that described Connector（3）End thread head (10) and extension bar（1）End thread interface connects, and there is sealing ring end（8）Place rubber ring.

6. a kind of quick coring drilling apparatus of roadway floor anchor hole according to claim 1 are it is characterised in that described Rig connecting rod（2）End has six rib joints can be connected with rig, and end has the hickey can be with connector（3）Or extension bar （1）The nipple of end is connected.