CN212179872U

CN212179872U - Circular protractor used in underground drilling field

Info

Publication number: CN212179872U
Application number: CN202020852130.9U
Authority: CN
Inventors: 雷洋洋; 李振江; 卢正阳; 王建坤
Original assignee: Sanmenxia Longwangzhuang Coal Industry Co ltd
Current assignee: Sanmenxia Longwangzhuang Coal Industry Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-18
Anticipated expiration: 2030-05-20

Abstract

A circular protractor used in an underground drill site comprises a triangular support, wherein a base is arranged at the top of the triangular support, a connecting shaft is arranged at the center of the base, a dial plate is rotatably connected to the top of the connecting shaft, a rotatable central shaft is vertically arranged at the center of the dial plate, a rotary pointer parallel to the dial plate is arranged on the central shaft, a laser lamp is arranged on the rotary pointer, the light direction of the laser lamp is consistent with the direction of the rotary pointer, the base comprises a base and a top seat, a plurality of fine adjustment screw rods used for adjusting the level of the top seat are arranged between the base and the top seat, the lower ends of the fine adjustment screw rods are movably inserted in the base, and the fine tuning screw rod is in threaded fit connection with the top seat, a handle is arranged on the fine tuning screw rod, a leveling bubble is arranged on the top seat, the mounting end of the rotary pointer is sleeved on the central shaft, and the rotary pointer is attached to the surface of the dial plate. The utility model discloses simple, the convenient operation of installation dismantlement and job stabilization are reliable.

Description

Circular protractor used in underground drilling field

Technical Field

The utility model belongs to the technical field of mining equipment, especially, relate to a circular protractor for in underground drill site.

Background

Currently, geological compasses are often used in downhole wellbores to locate the azimuth of a target. However, in the underground mine face, the geological compass is easily interfered by geomagnetism and artificial measurement errors, so that the azimuth angle error is large, generally between 3 degrees and 5 degrees and even more than 10 degrees seriously, and the geological compass cannot be practically applied in a downhole drilling field.

Secondly, drilling location in the underground drilling field mostly adopts measuring instruments such as a total station instrument to measure and locate each drilling hole, and the time consumption is long, and when a new drilling hole is designed, a measurer needs to go to the site to measure, so that manpower and material resources are consumed seriously, and the working efficiency is extremely low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the weak point among the prior art, provide a circular protractor for in underground drill site that simple, convenient operation and job stabilization are dismantled in the installation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a circular protractor for in underground drill site, includes the A-frame, the A-frame top is provided with the base, and the base center is provided with the connecting axle, and the connecting axle top is rotated and is connected with the dial plate, and the dial plate center is equipped with rotatable center pin perpendicularly, is provided with the rotatory pointer parallel with the dial plate on the center pin, is provided with the laser lamp on the rotatory pointer, and laser lamp light direction is directional unanimous with rotatory pointer.

Further, the base includes base and footstock, is provided with a plurality of fine setting hob that are used for adjusting the footstock horizontally between base and the footstock, and the activity of fine setting hob lower extreme is pegged graft in the base, and the footstock setting is passed to fine setting hob upper end, and fine setting hob and footstock screw-thread fit connect, are provided with the handle on the fine setting hob.

Further, a leveling bubble is arranged on the top seat.

Furthermore, the mounting end of the rotary pointer is sleeved on the central shaft, and the rotary pointer is attached to the surface of the dial plate.

Furthermore, the A-frame includes three telescopic adjusting rods, and the upper ends of the three telescopic adjusting rods are connected with the bottom of the base through rotating shafts.

Adopt above-mentioned technical scheme, the utility model has the advantages of as follows:

1. the utility model is not affected by geological conditions, is suitable for underground positioning, can reduce human errors, improve positioning precision and control the error of the azimuth angle of the drill hole within 0.5 degrees;

2. the working strength of measuring personnel is reduced, the overall working efficiency of drilling and measuring of a mine is improved, and the measuring personnel do not need to carry out paying-off, measuring and positioning drilling on site before drilling of each drilling hole;

3. the round protractor has low manufacturing cost, simple assembly and disassembly and convenient operation, can be moved at any time, and is suitable for any drilling place;

4. the application range is wider, and the drilling azimuth angle can be adjusted according to the drilling design requirement.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the working state of the present invention.

In the figure: the device comprises a triangular support 1, a connecting shaft 2, a dial 3, a central shaft 4, a rotary pointer 5, a laser lamp 6, a base 7, a top seat 8, a fine adjustment screw rod 9, a handle 10, a leveling bubble 11, a telescopic adjusting rod 12, a plumb bob 13 and a cord 14.

Detailed Description

As shown in fig. 1-2, the utility model discloses a circular protractor for in downhole drill, including A-frame 1, A-frame 1 top is provided with the base, and the base center is provided with connecting

axle

2, and 2 tops of connecting axle are rotated and are connected with dial plate 3, and dial plate 3 center is equipped with rotatable center pin 4 perpendicularly, is provided with the rotatory pointer 5 parallel with dial plate 3 on the center pin 4, is provided with laser lamp 6 on the

rotatory pointer

5, and 6 light direction of laser lamp are directional unanimous with rotatory pointer 5.

The base includes base 7 and footstock 8, is provided with a plurality of fine setting hob 9 that are used for adjusting the 8 horizontally of footstock between base 7 and the footstock 8, has seted up a plurality of jacks on the

base

7, and 9 lower extreme activities of fine setting hob are pegged graft in the jack, and 9 upper ends of fine setting hob pass the setting of footstock 8, and

fine setting hob

9 and 8 screw-thread fit of footstock connect, are provided with handle 10 on the fine setting hob 9. The precision of the joint of the fine adjustment screw rod 9 and the base 7 is high, and the fine adjustment screw rod 9 can be tightly inserted into the jack and can rotate in the jack. When the device is used, the handle 10 is screwed to rotate the fine adjustment screw rod 9 to drive the top seat 8 to move in the up-and-down direction so as to perform fine adjustment on the top seat 8. When the device is disassembled, the handle 10 is screwed to rotate the fine adjustment screw rod 9, one end of the fine adjustment screw rod 9 in the jack of the base 7 is rotated and loosened, and then the fine adjustment screw rod is pulled out, so that the base 7 and the top seat 8 are disassembled.

The top seat 8 is provided with a leveling bubble 11.

The mounting end of the rotary pointer 5 is sleeved on the central shaft 4, and the rotary pointer 5 is attached to the surface of the dial 3.

The triangular support 1 comprises three telescopic adjusting rods 12, and the upper ends of the three telescopic adjusting rods 12 are connected with the bottom of the base 7 through rotating shafts.

The utility model discloses a use method:

1. firstly, determining an azimuth angle in a certain direction by using measuring instruments such as a total station and the like, and manufacturing a measuring point for marking;

2. the device is placed under a measuring point by using a wire rope 14 and a plumb 13 for marking, a dial 3 is placed on a base through a connecting shaft 2, and a laser lamp 6 is fixed on a rotary pointer 5, so that the light of the laser lamp 6 is consistent with the direction pointed by the rotary pointer 5;

3. whether the top seat 8 is horizontal or not is judged by observing the leveling bubble 11, the handle 10 is screwed, the fine adjustment screw rod 9 is rotated, fine adjustment is carried out on the top seat 8, and the dial 3 is ensured to be in a horizontal state;

4. rotatory dial plate 3 of stirring guarantees the angle and the unanimous angle in measured azimuth, then fixed dial plate 3 keeps dial plate 3 motionless, guarantees device stability, reduces the error. For example: when the measured azimuth angle is 220 degrees, the dial 4 is rotated to 220 degrees, and the direction pointed by the rotating pointer 5 is ensured to be consistent with the measured direction, which is 220 degrees;

5. the rotary pointer 5 is then rotated to the desired borehole azimuth reading, depending on the borehole azimuth desired to be payed out. For example: the designed drilling azimuth angle is 250 degrees, and the rotating pointer 5 is dialed to 250 degrees;

6. three cords 14 are arranged on the top along the direction pointed by the light of the laser lamp 6, and a plumb 13 is respectively arranged on each cord 14.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

Claims

1. A circular protractor for use in a downhole wellbore, characterized by: the laser dial indicator comprises a triangular support (1), a base is arranged at the top of the triangular support (1), a connecting shaft (2) is arranged at the center of the base, a dial plate (3) is rotatably connected to the top of the connecting shaft (2), a rotatable central shaft (4) is perpendicularly arranged at the center of the dial plate (3), a rotary pointer (5) parallel to the dial plate (3) is arranged on the central shaft (4), a laser lamp (6) is arranged on the rotary pointer (5), and the light direction of the laser lamp (6) is consistent with the direction of the rotary pointer (5).

2. The circular protractor for use in a downhole wellbore of claim 1, wherein: the base includes base (7) and footstock (8), is provided with a plurality of fine setting hob (9) that are used for adjusting footstock (8) horizontally between base (7) and footstock (8), and fine setting hob (9) lower extreme activity is pegged graft in base (7), and footstock (8) setting is passed to fine setting hob (9) upper end, and fine setting hob (9) and footstock (8) screw-thread fit connect, is provided with handle (10) on fine setting hob (9).

3. The circular protractor for use in a downhole wellbore of claim 2, wherein: and a leveling bubble (11) is arranged on the top seat (8).

4. The circular protractor for use in a downhole drilling field according to claim 1 or 3, wherein: the mounting end of the rotary pointer (5) is sleeved on the central shaft (4), and the rotary pointer (5) is attached to the surface of the dial (3).

5. The circular protractor for use in a downhole wellbore of claim 2, wherein: the triangular support (1) comprises three telescopic adjusting rods (12), and the upper ends of the three telescopic adjusting rods (12) are connected with the bottom of the base (7) through rotating shafts.