CN112096297B

CN112096297B - Noise reduction device for drilling machine

Info

Publication number: CN112096297B
Application number: CN202010863640.0A
Authority: CN
Inventors: 曾纯品; 彭玉明; 张文刚; 郭长恩; 王洪祯; 张恩重; 胡建波; 王蓉; 李玉兴; 宫亮
Original assignee: Shandong Provincial Institute Of Geological And Mineral Engineering Investigation
Current assignee: Shandong Provincial Institute Of Geological And Mineral Engineering Investigation
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2022-03-11
Anticipated expiration: 2040-08-25
Also published as: CN112096297A

Abstract

The application relates to a device of making an uproar falls in rig includes: the sealing device comprises a sealing cylinder and a sealing cover, wherein the sealing cylinder is arranged on one side of the sealing cover, the sealing cover is provided with a through hole for a drill bit to pass through, and the axis of the drill bit is the same as that of the sealing cylinder; the sleeve is coaxially arranged with the sealing cylinder and arranged in the sealing cylinder, the sleeve is provided with an internal thread, the drill bit is provided with an external thread, and the sleeve is in threaded connection with the drill bit and is fixedly arranged relative to the drill bit; the surface of the sleeve, which is far away from the drill bit, is provided with a plurality of sound insulation sheets, one end, connected with the sleeve, of each sound insulation sheet is movably arranged relative to the sleeve, and the sound insulation sheets have different lengths and widths; a plurality of springs, surround the adjacent setting in edge of sealed lid forms one and holds the chamber, each the one end of spring is fixed in the edge of sealed lid, the other end is provided with the balancing weight.

Description

Noise reduction device for drilling machine

Technical Field

The application relates to the field of machinery, in particular to a drilling machine noise reduction device.

Background

In recent years, with the more and more excellent living standard of people, the more and more high requirements of people on living quality are met. The perfection of the facilities of our living environment has been gradually increasing. Wherein, no matter the installation body-building equipment, still the pile is piled to the street lamp electric wire, all needs the work of rig. The existing electric drill has high noise during working, and is difficult to be applied to environments with low requirements on environmental noise, such as hospitals, nursing homes and the like.

Disclosure of Invention

Based on this, to the above-mentioned problem, provide a rig noise reduction device.

A drilling rig noise reduction apparatus comprising:

the sealing device comprises a sealing cylinder and a sealing cover, wherein the sealing cylinder is arranged on one side of the sealing cover, the sealing cover is provided with a through hole for a drill bit to pass through, and the axis of the drill bit is the same as that of the sealing cylinder;

the sleeve is coaxially arranged with the sealing cylinder and arranged in the sealing cylinder, the sleeve is provided with an internal thread, the drill bit is provided with an external thread, and the sleeve is in threaded connection with the drill bit and is fixedly arranged relative to the drill bit;

the surface of the sleeve, which is far away from the drill bit, is provided with a plurality of sound insulation sheets, one end, connected with the sleeve, of each sound insulation sheet is movably arranged relative to the sleeve, and the sound insulation sheets have different lengths and widths;

the springs are adjacently arranged around the edge of the sealing cover to form an accommodating cavity, the sealing cylinder is accommodated in the accommodating cavity, one end of each spring is fixed to the edge of the sealing cover, and the other end of each spring is provided with a balancing weight;

the sealing cover is provided with a vacuum pumping hole which is communicated with the sealing barrel.

In one embodiment, the vacuum suction device further comprises a collection bottle connected with the vacuum suction hole through a flexible pipe and used for containing foreign matters sucked through the vacuum suction hole.

In one embodiment, the collection bottle is connected to the middle of the flexible tube, and a vacuum pump is arranged on the side of the flexible tube away from the sealing cover.

In one embodiment, a filter screen is arranged at one end of the flexible pipe close to the vacuum pump.

In one embodiment, each of the springs is attached to the center of the seal cap by a telescoping rod arrangement.

In one embodiment, the sealing cover is provided with a receiving groove, at least a part of the sleeve is arranged in the receiving groove, and the sleeve and the receiving groove are arranged at intervals.

The embodiment of the application provides a device of making an uproar falls in rig. The noise reduction device of the drilling machine comprises a sealing barrel and a sealing cover. The axis of the sealing cylinder is the same as that of the sealing cover. The sealing cylinder is arranged on one side of the sealing cover. The sealing cover is provided with a through hole. The through hole is used for passing through a drill bit. The axis of the drill bit is the same as the axis of the sealing cylinder. I.e. the drill bit can pass through said through hole and said sealing cylinder. The diameter of the sealing cylinder is larger than that of the drill bit.

The drilling rig noise reduction apparatus also includes a sleeve. The sleeve and the sealing cylinder are coaxially arranged. The sleeve is arranged in the sealing cylinder. I.e. the diameter of the sleeve is smaller than the diameter of the sealing cylinder. The sealing sleeve is sleeved outside the sleeve. The sleeve has an internal thread and the drill bit has an external thread, the sleeve and the drill bit being in a threaded connection, i.e. the sleeve is fixedly arranged relative to the drill bit. When the drill bit rotates, the sleeve rotates along with the drill bit.

The surface of the sleeve far away from the drill bit is provided with a plurality of sound insulation sheets. One end of the sound insulation sheet connected with the sleeve is movably arranged relative to the sleeve. I.e. when the drill bit is rotated, the sleeve rotates with the drill bit. Under the action of centrifugal force, the unfixed end of the sound-proof sheet is far away from the sleeve. The plurality of soundproof plates are eccentrically rotated, and have different lengths and widths, so that the plurality of soundproof plates are alternately arranged on the surface of the sleeve. It will be appreciated that the sound produced by the rig during operation is a mechanical wave. The staggered sound insulation sheets can quickly weaken the transmission intensity of mechanical waves. Therefore, when the sleeve rotates, the sound insulation sheet can play a good sound attenuation effect. The sound-damping sheet may be made of a sound-damping material. The sound-damping sheet may be a polyester or wood material, foam, or the like. The sound-proof sheet can also be made of foam plastic, urea-formaldehyde foam plastic, industrial felt, foam glass, glass wool, slag wool and asphalt slag wool. The surface of the sound-proof sheet may have a plurality of depressions and protrusions to further improve the sound-absorbing effect.

The drilling rig noise reduction apparatus also includes a plurality of springs. The springs are adjacently arranged around the edge of the sealing cover to form an accommodating cavity. The sealing cylinder is accommodated in the accommodating cavity. One end of each spring is fixed on the edge of the sealing cover, and the other end of each spring is provided with a balancing weight. I.e. the plurality of springs are independent of each other. The compression or extension of one spring does not affect the state of the other springs. When the springs are in a falling state under the action of the balancing weight, the accommodating cavity can be formed. It can be understood that the spiral structure of the spring can further disturb the propagation path of the sound wave, increase the reflection and scattering of the sound wave, and thus achieve the purpose of sound attenuation. Further, when the drill bit of the drilling machine is operated on uneven ground, the ground on which the drill bit is located is not a plane. Therefore, when the springs contact the concave or convex part where the drill bit is located, different springs can stretch or compress along with the fluctuation of the terrain, so that the length can be changed along with the terrain, the purpose of covering the drill bit in the sealed cavity as far as possible is achieved, and the noise can be effectively reduced. The sealing cover is provided with a vacuum pumping hole which is communicated with the sealing barrel. It is understood that acoustic waves are mechanical waves, and propagation requires a medium. While the sound waves cannot propagate in vacuum. Therefore, the sealed cylinder is vacuumized, so that the medium of the sound wave transmission medium can be reduced as much as possible, the vacuum degree in the sealed cylinder is improved as much as possible, and the noise is effectively reduced.

Description of the drawings:

FIG. 1 is a cross-sectional view of a drill rig noise reducer provided in an embodiment of the present application;

FIG. 2 is a schematic view illustrating the operation of a noise reduction device of a drilling rig on uneven ground according to an embodiment of the present application;

FIG. 3 is a plan view of a spring structure on a seal cap provided in accordance with one embodiment of the present application.

Description of reference numerals:

drilling machine noise reduction device 10

Drill bit 100

Sealing cylinder 110

Sealing cover 120

Accommodating groove 122

Through hole 124

Vacuum pumping hole 130

Sleeve 200

Sound insulation sheet 210

Spring 220

Accommodating chamber 230

Counterweight 240

Collecting bottle 300

Flexible pipe 310

Filter screen 320

Vacuum pump 330

An extendable rod 340.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly contact but through another feature in between. Also, a first feature being "on," "above" and "over" a second feature includes the first feature being directly on and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, an embodiment of the present application provides a noise reduction device for a drilling machine. The noise reduction device of the drilling machine comprises a sealing barrel and a sealing cover. The axis of the sealing cylinder is the same as that of the sealing cover. The sealing cylinder is arranged on one side of the sealing cover. The sealing cover is provided with a through hole. The through hole is used for passing through a drill bit. The axis of the drill bit is the same as the axis of the sealing cylinder. I.e. the drill bit can pass through said through hole and said sealing cylinder. The diameter of the sealing cylinder is larger than that of the drill bit.

The surface of the sleeve far away from the drill bit is provided with a plurality of sound insulation sheets. One end of the sound insulation sheet connected with the sleeve is movably arranged relative to the sleeve. I.e. when the drill bit is rotated, the sleeve rotates with the drill bit. Under the action of centrifugal force, the unfixed end of the sound-proof sheet is far away from the sleeve. The plurality of soundproof plates are eccentrically rotated, and have different lengths and widths, so that the plurality of soundproof plates are alternately arranged on the surface of the sleeve. It will be appreciated that the sound produced by the rig during operation is a mechanical wave. The sound wave is reflected or absorbed when meeting obstacles in the process of transmission, and the process weakens the intensity of the sound wave. The sound-proof sheets arranged in a staggered way can enlarge the area for obstructing the sound wave transmission after rotating. The sound waves encountering the sound-damping sheet may be reflected or absorbed by the sound-damping sheet, which may reduce the transmission of sound waves to the outside. After the sound insulation sheet rotates, the section of sound wave transmission changes suddenly, namely, sound reactance changes to reflect the sound wave transmitted along the pipeline back to the sound source direction, so that sound energy is reflected back to the original position, and the transmission intensity of mechanical wave can be weakened. And because the complexity of ground environment, when the drill bit worked under different environment, the operating mode of chooseing for use is different, and the wavelength and the amplitude range of ground vibration are great relatively, consequently a plurality of settings can hinder the sound wave of different wavelength and frequency as far as possible in the different sound insulation piece of different position size. The distance between the sound insulation pieces can be larger than the wavelength of the vibrating sound wave, so that the transmission of the sound wave can be blocked as much as possible, and the diffraction can be reduced. Therefore, when the sleeve rotates, the sound insulation sheet can play a good sound attenuation effect. The sound-damping sheet may be made of a sound-damping material. The sound-damping sheet may be a polyester or wood material, foam, or the like. The sound-proof sheet can also be made of foam plastic, urea-formaldehyde foam plastic, industrial felt, foam glass, glass wool, slag wool and asphalt slag wool. The surface of the sound-proof sheet may have a plurality of depressions and protrusions to further improve the sound-absorbing effect. When the drill bit does not rotate, the sound insulation sheet is attached to the surface of the sleeve, so that the sound insulation sheet is convenient to disassemble and store, and the occupied volume is reduced.

Referring to fig. 2 and 3, the drill noise reducer further comprises a plurality of springs. The springs are adjacently arranged around the edge of the sealing cover to form an accommodating cavity. The sealing cylinder is accommodated in the accommodating cavity. One end of each spring is fixed on the edge of the sealing cover, and the other end of each spring is provided with a balancing weight. I.e. the plurality of springs are independent of each other. The compression or extension of one spring does not affect the state of the other springs. When the springs are in a falling state under the action of the balancing weight, the accommodating cavity can be formed. It can be understood that the spiral structure of the spring can further disturb the propagation path of the sound wave, increase the reflection and scattering of the sound wave, and thus achieve the purpose of sound attenuation. Further, when the drill bit of the drilling machine is operated on uneven ground, the ground on which the drill bit is located is not a plane. Therefore, when the springs contact the concave or convex part where the drill bit is located, different springs can stretch or compress along with the fluctuation of the terrain, so that the length can be changed along with the terrain, the purpose of covering the drill bit in the sealed cavity as far as possible is achieved, and the noise can be effectively reduced. The sealing cover is provided with a vacuum pumping hole which is communicated with the sealing barrel. It is understood that acoustic waves are mechanical waves, and propagation requires a medium. While the sound waves cannot propagate in vacuum. Therefore, the sealed cylinder is vacuumized, so that the medium of the sound wave transmission medium can be reduced as much as possible, the vacuum degree in the sealed cylinder is improved as much as possible, and the noise is effectively reduced.

In one embodiment, the noise reduction device of the drilling machine further comprises a collecting bottle connected with the vacuum pumping hole through a flexible pipe and used for containing foreign matters pumped out through the vacuum pumping hole. The drill bit is characterized in that the flexible pipe is arranged on the drill bit, and the flexible pipe is arranged on the drill bit and is connected with the vacuum pump through a flexible pipe.

In one embodiment, the collection bottle is connected to the middle of the flexible tube, and a vacuum pump is arranged on the side of the flexible tube away from the sealing cover. That is, impurities such as earth and stones passing through the flexible pipe can enter the collecting bottle under the action of gravity, and then the gas can enter the vacuum pump.

In one embodiment, a filter screen is arranged at one end of the flexible pipe close to the vacuum pump. Impurities which do not enter the collecting bottle can be further filtered by the filter screen and then enter the vacuum pump.

In one embodiment, each of the springs is attached to the center of the seal cap by a telescoping rod arrangement. Therefore, the distance of each spring relative to the center of the sealing cover can be adjusted by the telescopic rod to adapt to different terrain environments.

The foregoing is only a preferred embodiment of the present application and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present application and these modifications should also be considered as the protection scope of the present application.

Claims

1. A drilling rig noise reduction apparatus, comprising:

the surface of the sleeve, which is far away from the drill bit, is provided with a plurality of sound insulation sheets, one end, connected with the sleeve, of each sound insulation sheet is movably arranged relative to the sleeve, and the sound insulation sheets have different lengths and widths; the staggered sound insulation sheets can enlarge the area for obstructing the sound wave transmission after rotating, and the sound wave can be reflected or absorbed by the sound insulation sheets when encountering the sound insulation sheets, so that the transmission of the sound wave to the outside can be weakened;

2. The drilling rig noise reduction device of claim 1, further comprising a collection bottle connected to the vacuum extraction hole by a flexible tube for receiving foreign matter extracted through the vacuum extraction hole.

3. The drilling rig noise reduction device of claim 2, wherein the collection bottle is connected to a middle portion of the flexible tube, and a vacuum pump is provided on a side of the flexible tube remote from the sealing cap.

4. The drilling rig noise reduction device of claim 3, wherein an end of the flexible tube proximate the vacuum pump is provided with a filter screen.

5. Rig noise reducer according to claim 1, characterized in that each of said springs is connected to the centre of said sealing cover by means of a telescopic rod arrangement.

6. The drilling rig noise reduction device of claim 1, wherein the seal cap defines a receiving groove, at least a portion of the sleeve being disposed in the receiving groove, the sleeve being spaced from the receiving groove.