CN102944299B

CN102944299B - Sound-proof shield capable of regulating noise detection

Info

Publication number: CN102944299B
Application number: CN201210440319.7A
Authority: CN
Inventors: 周晓军
Original assignee: HANGZHOU ZHEDA BENYUE TECHNOLOGY CO LTD
Current assignee: Hangzhou Benyue Technology Co., Ltd
Priority date: 2012-11-07
Filing date: 2012-11-07
Publication date: 2014-05-07
Anticipated expiration: 2032-11-07
Also published as: CN102944299A

Abstract

The invention discloses a sound-proof shield capable of regulating noise detection. A noise probe passes through a gland and an end cover hole from outside to inside to be hung in a sound-proof cover; the gland is arranged in the big center hole of an end cover to be connected by a bolt; the small column of the end cover is installed in the big center hole of the sound-proof cover; the end cover is connected with the sound-proof cover; a part between the small center hole of the end cover and the noise probe is sealed by a seal ring; the big center hole of the sound-proof cover is successively inwards provided with a sound adsorption block and an isolation net; the inner side of the lower end of the sound-proof cover is connected with a fixed block; the lower end of the fixed block is provided with a sound-proof plate; the shape of the sound-proof plate is the same with the outer outline of to-be-tested equipment; stepped holes are arranged at an equal distance on the same circumference of the outer-side step of the lower end of the sound-proof cover; each stepper hole is respectively provided with a step-shaped magnet base; and the lower end of each step-shaped magnet base is respectively provided with a magnet. The sound-proof plate is regulated according to different appearance diameters of the to-be-tested equipment without changing the whole set of sound-proof shield, and the environment noise and the to-be-tested equipment noise can be favorably separated, and the efficiency is high.

Description

The blimp of capable of regulating walkaway

Technical field

The present invention relates to a kind of noise detection apparatus, especially relate to a kind of blimp of capable of regulating walkaway.

Background technology

Walkaway is that tested part or equipment descend the method for often using in fault diagnosis and failure prediction in working order, analysis after walkaway can effectively carry out fault diagnosis and prediction fault future occur possibility, therefore in equipment Inspection in very important status.

Therefore, how exactly detection noise has become an important technology, and when particularly testing, how eliminating extraneous interference and affecting has vital impact to accuracy of detection, and therefore test is generally carried out in absorption chamber.And country is for the trace routine of mechanical noise existing standard substantially, according to ISO3744 standard:

1, measure the environment of noise should be solid smooth light (as cement flooring, pitch ground), and can not have around the barrier of any reflect sound within the scope of 21M; 2, reduce as much as possible the impact of weather and environment, as wind, temperature, appropriateness etc., determine that these factors are all can receive in scope at surveying instrument; 3, background sound should be than more than the low 10dB of sound to be measured.

And in real work due to installation, maintenance, operation degree difference, have a great difference with the acoustical testing in laboratory.Generally taking one meter of place of mechanical sound source to survey noise figure and deduct environmental background noise value, is just actual noise value.

Said method is all passive substantially, be to process after checkout equipment receives background interference noise, precision is lower, environment is had to higher requirement simultaneously again, therefore in the testing process of physical device, be difficult to reach desired environment, more greatly reduce measuring accuracy.

Summary of the invention

Higher to environmental requirement for noise detection apparatus, and measuring accuracy affects and not high shortcoming by it, the object of this invention is to provide a kind of blimp of capable of regulating walkaway, so that test environment noise isolation is opened, accurately detects the noise of equipment under test inside.

For solving the problems of the technologies described above, the technical solution used in the present invention is:

Noise probe of the present invention is from outside to inside through after gland and ending cover hole, be suspended in barney macropore, gland is contained in the large center pit of end cap and connects by the 3rd screw, end cap small cylindrical surface is arranged in the large center pit of barney, end cap is connected by the second screw with barney, between the little center pit of end cap and noise probe, with O-ring seal, seal, the large center pit of barney is inwardly equipped with sound-absorbing piece and separation net successively, the inner side of barney lower end is connected with fixed block by the first screw, sound panel is equipped with in the lower end of fixed block, the shape of sound panel is with identical with the outline of equipment under test, on the same circumference of the outside step of barney lower end, equidistantly have shoulder hole, each shoulder hole is all provided with stepped appearance magnetic receiver, magnet is equipped with respectively in the lower end of each stepped appearance magnetic receiver.

Ring groove is driven in the aperture outside of the shoulder hole of the outside step of described barney lower end, collar parts are installed in ring groove, the centre of collar parts inner side is embedded with retainer plate, collar parts form by being semicircular the first collar body and the second collar body, a side is all porose separately for the first collar body and the second collar body, in hole, mount pin links together, the opposite side separately of the first collar body and the second collar body porose and threaded hole linking together by the 5th screw respectively.

The beneficial effect that the present invention has is:

Adopt structure of the present invention to adjust sound panel according to the profile diameter of equipment under test is different, and do not need to change a whole set of blimp, can well the noise of neighbourhood noise and equipment under test be kept apart well, time saving and energy saving, efficiency is high.

Accompanying drawing explanation

Fig. 1 is general structure principle schematic of the present invention.

Fig. 2 is the front view of collar parts.

Fig. 3 is the cut-open view of collar parts.

In figure: 1, equipment under test, 2, sound panel, 3, fixed block, 4, the first screw, 5, barney, 6, magnet, 7, stepped appearance magnetic receiver, 8, collar parts, 9, retainer plate, 10, cover plate, 11, sound-absorbing piece, 12, separation net, 13, the second screw, 14, the 3rd screw, 15, gland, 16, O-ring seal, 17, end cap, 18, noise probe, 19, the 4th screw, 20, pin, 21, the first collar body, 22, the second collar body, 23, the 5th screw.

Embodiment

Below in conjunction with drawings and embodiments, the invention will be further described.

As Fig. 1, shown in Fig. 2, noise probe 18 of the present invention is from outside to inside through behind gland 15 and end cap 17 holes, be suspended in barney 5 macropores, gland 15 is contained in the large center pit of end cap 17 and connects by the 3rd screw 14, end cap 17 small cylindrical surfaces are arranged in the large center pit of barney 5, end cap 17 is connected by the second screw 13 with barney 5, between the little center pit of end cap 17 and noise probe 18, with O-ring seal 16, seal, the large center pit of barney 5 is inwardly equipped with sound-absorbing piece 11 and separation net 12 successively, the inner side of barney 5 lower ends is connected with fixed block 3 by the first screw 4, sound panel 2 is equipped with in the lower end of fixed block 3, the shape of sound panel 2 is with identical with the outline of equipment under test 1, on the same circumference of the outside step of barney 5 lower ends, equidistantly have shoulder hole, each shoulder hole is all provided with stepped appearance magnetic receiver 7, magnet 6 is equipped with respectively in the lower end of each stepped appearance magnetic receiver 7, on shoulder hole, be stamped cover plate 10, cover plate 10 be connected with barney 5 outside step surfaces with the 4th screw 19.

Noise probe 18 is arranged in the aperture in stepped central hole of end cap 17, the macropore of the upper end, stepped central hole of end cap 17 is connected with gland 15 by the 3rd screw 14, between the mesopore in the stepped central hole of end cap 17 and the gland 15 and outside of noise probe 18 is provided with O-ring seal 16, therefore noise probe 18 is embedded in the middle of them, and owing to there being the effect of O-ring seal 16, ground unrest can not import in noise probe 18 from the top of blimp.

The lower end in end cap 17 outsides is connected with the upper end of barney 5 by the second screw 13, there is a shoulder hole in the outside of barney 5 lower ends, and by shoulder hole, a step-like magnetic receiver 7 is installed, the lower end of magnetic receiver 7 and magnet 6 are fixing, between magnetic receiver 7 and magnet 6, can be connected by interference or transition fit, also can connect by seccotine, also can otherwise fix, magnet 6 use strong magnets have better effect, therefore, magnetic receiver 7 can slide with moving magnet 6 in the shoulder hole in barney 5 outsides, lower end

The upper end of the outside shoulder hole of barney 5 lower ends is connected with cover plate 10 by the 4th screw 19, and therefore, magnetic receiver 7 can only slide in shoulder hole, and cannot slide into outside shoulder hole.

When blimp approaches equipment under test 1, equipment under test 1 produces suction to magnet 6, and blimp is inhaled tightly at equipment under test 1.

Ring groove is driven in the aperture outside of the shoulder hole of the outside step of described barney 5 lower ends, collar parts 8 are installed in groove, the centre of collar parts 8 inner sides is embedded with retainer plate 9, collar parts 8 form by being semicircular the first collar body 21 and the second collar body 22, the first collar body 21 and the second collar body 22 separately a side are all porose and link together by mount pin 20 in this hole, the opposite side separately of the first collar body 21 and the second collar body 22 has respectively unthreaded hole and threaded hole and links together by the 5th screw 23, retainer plate 9 use felts or rubber elastomeric material composition, therefore, the first collar body 21 and the second collar body 22 can rotate around pin 20, and rotation the 5th screw 23 can regulate the size of the first collar body 21 and the second inner ring that collar body 22 forms, thereby the inner ring that retainer plate 9 surrounds also changes, tighten the inner ring that 23 retainer plates 9 of the 5th screw surround and reduce, they clamp magnetic receiver 7, make the magnetic receiver 7 can not be in the interior movement of barney 5.

The inner side of barney 5 lower ends is connected with fixed block 3 by the first screw 4, sound panel 2 is fixed with the lower end of fixed block 3 and is identical with the outline of equipment under test 1, the lower end of fixed block 3 is processed into identical with the outline of equipment under test 1, and the resilient material of sound panel 2 use soft rubbers and so on is made, therefore, sound panel 2 can be fitted with equipment under test 1 well completely, and ground unrest can not import in noise probe 18 from the below of blimp.

The inner side of the downside of end cap 17 and barney 5 is provided with sound-absorbing piece 11, the inner side of sound-absorbing piece 11 is provided with screen pack 12, sound-absorbing piece 11 can be made by dacron acoustical cotton or polyethylene foams, therefore, screen pack 12 can fix sound-absorbing piece 11 well, acoustical cotton can avoid the noise that the interior biography of equipment under test 1 is come in blimp, to form reflection and resonance, absorbs well the noise that the interior biography of equipment under test 1 is come.

Principle of work of the present invention is as follows:

1, when having equipment under test 1 to test, according to the appearance profile of different equipment under test 1, make difform fixed block 3, and fixed block 3 is fixed in barney 5 by the first screw 4, again with seccotine or otherwise sound panel 2 is fixed on to fixed block 3, detection blimp is placed on to it above equipment under test 1, and therefore, equipment under test 1 completely note is combined on sound panel 2;

2, each magnet 6 drives magnetic receiver 7 down sliding in the multidiameter of barney 5 owing to being subject to attractive force, and directly contacts the surface of equipment under test 1;

3, the inner ring that rotation the 5th screw five surrounds the first collar body 21 and the second collar body 22 reduces, and the inner ring of retainer plate 9 also reduces, and magnetic receiver 7 lockings can not be slided, and blimp is fixed on equipment under test 1;

4, therefore, noise probe 18 noises that detect are the noise of equipment under test 1 inside, and neighbourhood noise is isolated in outside blimp completely;

5,, when the appearance profile of equipment under test 1 is different, only needing to make the variform fixed block 3 in lower end can adjust at any time.

Claims

1. the blimp of a capable of regulating walkaway, it is characterized in that: noise probe (18) is from outside to inside through behind gland (15) and end cap (17) hole, be suspended in barney (5) macropore, gland (15) is contained in the large center pit of end cap (17) and connects by the 3rd screw (14), end cap (17) small cylindrical surface is arranged in the large center pit of barney (5), end cap (17) is connected by the second screw (13) with barney (5), between the little center pit of end cap (17) and noise probe (18), with O-ring seal (16), seal, the large center pit of barney (5) is inwardly equipped with sound-absorbing piece (11) and separation net (12) successively, the inner side of barney (5) lower end is connected with fixed block (3) by the first screw (4), sound panel (2) is equipped with in the lower end of fixed block (3), the shape of sound panel (2) is identical with the outline of equipment under test (1), on the same circumference of the outside step of barney (5) lower end, equidistantly have shoulder hole, each shoulder hole is all provided with stepped appearance magnetic receiver (7), magnet (6) is equipped with respectively in the lower end of each stepped appearance magnetic receiver (7).

2. the blimp of a kind of capable of regulating walkaway according to claim 1, it is characterized in that: ring groove is driven in the aperture outside of the shoulder hole of the outside step of described barney (5) lower end, collar parts (8) are installed in ring groove, the centre of collar parts (8) inner side is embedded with retainer plate (9), collar parts (8) form with the second collar body (22) by being semicircular the first collar body (21), a side is all porose separately with the second collar body (22) for the first collar body (21), by mount pin in hole (20), link together, the opposite side separately of the first collar body (21) and the second collar body (22) respectively porose and threaded hole also links together by the 5th screw (23).