CN202869646U

CN202869646U - Sound-proofing cover capable of adjusting noise detection

Info

Publication number: CN202869646U
Application number: CN 201220582046
Authority: CN
Inventors: 周晓军
Original assignee: HANGZHOU ZHEDA BENYUE TECHNOLOGY CO LTD
Current assignee: HANGZHOU ZHEDA BENYUE TECHNOLOGY CO LTD
Priority date: 2012-11-07
Filing date: 2012-11-07
Publication date: 2013-04-10
Anticipated expiration: 2022-11-07

Abstract

The utility model discloses a sound-proofing cover capable of adjusting the noise detection. A noise probe passes through a pressing cover and an end cover hole from outside to inside, and then is suspended in a sound-proofing sleeve. The pressing cover is arranged in a big central hole of the end cover and is connected via a bolt. A small column of the end cover is arranged in a big central hole of the sound-proofing sleeve. The end cover is connected with the sound-proofing sleeve. A small central hole of the end cover is sealed with the noise probe via a sealing ring. The big central hole of the sound-proof sleeve is provided with a sound absorbing block and an isolating net to the inside in order. The inside of the lower end of the sound-proofing sleeve is connected with a fixing block. The lower end of the fixing block is provided with a sound isolating plate. The shape of the sound isolating plate is the same as the outer outline of a tested device. The same circumference of an outer step on the lower end of the sound-proofing sleeve is provided with stepped holes at equal intervals, and each stepped hole is provided with a stepped magnet seat. The lower end of each stepped magnet seat is provided with a magnet. The sound isolating plate is adjusted according to the shape diameter of the tested device, and the entire sound-proofing cover dose not need to be replaced, so the ambient noise is excellently isolated from the noise of the tested device, and the efficiency is high.

Description

A kind of blimp of capable of regulating walkaway

Technical field

The utility model relates to a kind of noise detection apparatus, especially relates 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 the failure prediction in working order, analysis after the walkaway can effectively be carried out fault diagnosis and predict the possibility that fault will occur in future, therefore is in very important status in equipment Inspection.

Therefore, how exactly detection noise has become an important technology, and how eliminating extraneous interference when particularly testing 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 basically, according to the ISO3744 standard:

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

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

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

Summary of the invention

Higher to environmental requirement for noise detection apparatus, and measuring accuracy is affected and not high shortcoming by it, the purpose of this utility model provides a kind of blimp of capable of regulating walkaway, so that the 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 adopted in the utility model is:

After noise probe of the present utility model passes gland and ending cover hole from outside to inside, be suspended in the barney macropore, gland is contained in the large center pit of end cap and connects by the 3rd screw, the end cap small cylindrical surface is installed in the large center pit of barney, end cap is connected by the second screw with barney, seal with O-ring seal between the little center pit of end cap and the noise probe, the large center pit of barney inwardly is equipped with sound-absorbing piece and separation net successively, the inboard 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, equidistantly have shoulder hole on the same circumference of the outside step of barney lower end, each shoulder hole all is equipped with the stepped appearance magnetic receiver, and 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, the collar parts are installed in the ring groove, the centre of collar parts inboard is embedded with retainer plate, the 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, mount pin links together in the hole, and the separately opposite side of the first collar body and the second collar body is porose and threaded hole and link together by the 5th screw respectively.

The beneficial effect that the utlity model has is:

Adopt structure of the present utility model differently according to the profile diameter of equipment under test to adjust sound panel, 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, efficient is high.

Description of drawings

Fig. 1 is general structure principle schematic of the present utility model.

Fig. 2 is the front view of collar parts.

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

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

Embodiment

The utility model will be further described below in conjunction with drawings and embodiments.

Such as Fig. 1, shown in Figure 2, after noise probe 18 of the present utility model passes gland 15 and end cap 17 holes from outside to inside, be suspended in barney 5 macropores, gland 15 is contained in the end cap 17 large center pits and connects by the 3rd screw 14, end cap 17 small cylindrical surfaces are installed in the barney 5 large center pits, end cap 17 is connected by the second screw 13 with barney 5, seal with O-ring seal 16 between end cap 17 little center pits and the noise probe 18, barney 5 large center pits inwardly are equipped with sound-absorbing piece 11 and separation net 12 successively, the inboard 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, equidistantly have shoulder hole on the same circumference of the outside step of barney 5 lower ends, each shoulder hole all is equipped with stepped appearance magnetic receiver 7, and magnet 6 is equipped with respectively in the lower end of each stepped appearance magnetic receiver 7; Be stamped cover plate 10 on the shoulder hole, with the 4th screw 19 cover plate 10 be connected with barney 5 outside step surfaces.

Noise probe 18 is installed 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 equipped with O-ring seal 16, therefore noise probe 18 is embedded in the middle of them, and because the effect of O-ring seal 16 is arranged, ground unrest can not import in the 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 with interference or interference fits, 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 can't slide into outside the shoulder hole.

When blimp near equipment under

test

1,1 pair of magnet of equipment under test 6 produces suction, 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 the groove, the centre of collar parts 8 inboards 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 separately opposite side 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 usefulness felts or rubber elastomeric material form, therefore, the first collar body 21 and the second collar body 22 can rotate around pin 20, and rotate the size that the 5th screw 23 can be regulated the first collar body 21 and the second inner ring that collar body 22 forms, thereby the inner ring that retainer plate 9 surrounds changes also; Tighten the inner ring that 23 retainer plates 9 of the 5th screw surround and reduce, then they clamp magnetic receiver 7, make the magnetic receiver 7 can not be in barney 5 interior movements.

The inboard 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, it is identical with the outline of equipment under test 1 that namely be processed into the lower end of fixed block 3, and the resilient material of sound panel 2 usefulness soft rubbers and so on is made, therefore, sound panel 2 can be fitted with equipment under test 1 well fully, and ground unrest can not import in the noise probe 18 from the below of blimp.

The installed inside of the downside of end cap 17 and barney 5 has sound-absorbing piece 11, the installed inside of sound-absorbing piece 11 has 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, the noise that acoustical cotton can avoid equipment under test 1 interior biography to come forms reflection and resonance in blimp, absorb well the noise that equipment under test 1 interior biography is come.

Principle of work of the present utility model is as follows:

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

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

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

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

5, when the appearance profile of equipment under test 1 not simultaneously, 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: after noise probe (18) passes gland (15) and end cap (17) hole from outside to inside, 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 installed in the large center pit of barney (5), end cap (17) is connected by the second screw (13) with barney (5), seal with O-ring seal (16) between the little center pit of end cap (17) and the noise probe (18), the large center pit of barney (5) inwardly is equipped with sound-absorbing piece (11) and separation net (12) successively, the inboard 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 with identical with the outline of equipment under test (1), equidistantly have shoulder hole on the same circumference of the outside step of barney (5) lower end, each shoulder hole all is equipped with stepped appearance magnetic receiver (7), and 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 the ring groove, the inboard centre of collar parts (8) 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), mount pin in the hole (20) links together, and the separately opposite side 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).