JPH067334Y2 - Sample panel frame insertion / extraction device for acoustic test equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inserting and removing a sample panel frame in an acoustic test device in which an anechoic chamber, a first reverberation chamber, and a second reverberation chamber are sequentially connected. An object of the present invention is to provide an apparatus capable of easily and efficiently inserting and removing the sample panel frame from the sides of the two sample panel frame insertion spaces provided between the chambers.

[0002]

2. Description of the Related Art Conventionally, in order to measure the acoustic characteristics of various materials and devices, anechoic chambers and reverberation chambers have been used individually or in combination with two chambers. Especially, two chambers have been combined. In the device, it is also possible to improve the measurement efficiency by providing an insertion space for the sample panel frame on which the panel to be measured is mounted between both chambers and inserting and removing the sample panel frame from the outside of the device. It is already known as disclosed in Japanese Patent Publication No. 58-53851.

Recently, a three-chamber continuous test apparatus in which an anechoic chamber, a first reverberation chamber, and a second reverberation chamber are sequentially connected with a space for inserting a sample panel frame provided between the chambers has been developed. It has come to be preferably used as a device capable of efficiently performing a measurement conforming to the acoustic test conditions.

In this three-chamber continuous test apparatus, measurement openings each having a predetermined area are formed on the opposite wall surfaces of the insertion space of the sample panel frame provided between the chambers, and a sound insulation panel is mounted in one of the insertion spaces. By inserting the sample panel frame with the test panel mounted in another insertion space, the sample panel frame is inserted between the anechoic chamber and the first reverberation chamber or between the first reverberation chamber and the second reverberation chamber. It is possible to selectively measure the sound emission power characteristics of the test panel and the sound transmission loss with the room, and also the independent anechoic room and the reverberation room as materials, the sound power level of the equipment, and the sound absorption coefficient. It is a thing.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The means for inserting / removing the sample panel frame into / from the insertion spaces of the two sample panel frames provided between the chambers in the above-mentioned three-chamber continuous test apparatus are as follows. Although the hoist traveling transfer method shown in Japanese Patent Publication No. 58-53851 can be adopted, since the reverberation chamber has non-parallel wall surfaces, the sample panel frame is laterally inserted into and removed from the two insertion spaces. The transfer directions are inevitably non-parallel, and by adapting the two hoist traveling rails to each other and switching the transfer paths between them, the structure becomes complicated, a relatively large device area is required, and the operation is difficult. There were problems such as being troublesome.

[0006]

The present invention is a transfer device for inserting and replacing a sample panel frame into and from an insertion space of two sample panel frames in the above-mentioned three-chamber acoustic test device. By using a swivel carriage that accommodates and holds a plurality of sample panel frames and is movable outward in one direction, the above-mentioned problems of the conventional hoist traveling transfer means are solved.

That is, the present invention has an anechoic chamber, a first reverberation chamber,
In a sample panel frame inserting / removing device which is provided outside one side of an acoustic test device, in which a second reverberation chamber is formed by continuously forming a space for inserting a sample panel frame between the respective chambers, the device inserts the two insertion chambers. A swivel carriage that is movable along an arc direction centered on an intersection of extension lines of the insertion / removal transfer direction of the sample panel frame with respect to the space, and a plurality of arcs divided on the swivel carriage that have the arc centered on the intersection. A sample panel frame insertion / removal device for an acoustic test apparatus, which is characterized in that it has a plurality of sample panel frames that are respectively positioned in a radial direction and are held in parallel so as to be movable in the radial direction in a vertical manner. It is what

The three-room acoustic test apparatus including the anechoic chamber, the first reverberation chamber, and the second reverberation chamber has a structure in which the anechoic chamber and the first reverberation chamber face each other, and the first reverberation chamber and the second reverberation chamber. An insertion space for the sample panel frame is provided between the opposing wall surfaces, but the anechoic chamber is surrounded by non-parallel walls so that a sufficient diffuse sound field is formed. The linear insertion and removal directions of the sample panel frame from are inevitably non-parallel,
The two extension lines in the insertion / removal direction cross on the outside of one side of the test equipment.

The swivel carriage according to the present invention is a moving path in an arc direction centering on the intersection of extension lines in the insertion / removal direction of the sample panel frame with respect to the two insertion spaces, as close as possible to one side of the test apparatus. Since the plurality of sample panel frames held in the sample panel frame accommodating portion on the swivel carriage are respectively positioned in the radial direction of the arc and have an elevational shape and are movable in the radial direction. By moving the swivel carriage, it becomes possible to adapt one movement path of the plurality of sample panel frames accommodated on the swivel carriage so as to form a straight line with respect to any insertion space of the test apparatus.

The swivel carriage may be of a turntable type with its central axis fixed, but in terms of the installation area and other factors,
It is preferable to use a trolley type of four-wheel support that moves on an arcuate parallel rail, and the wheel diameters for the side with the larger turning radius of the parallel rail and the side with the smaller turning radius are adapted to the ratio of the turning radius, and It is desirable that a pair of axles having large and small diameters be connected by an intermediate shaft via a universal joint so that the axles are rotationally driven to achieve smooth turning movement.

The sample panel frame is a fan-shaped structure having a rectangular opening of 10 m ^{2 in} the center of a metal frame, which has a large strength, rigidity and sound insulation, and the test panel is closely attached to the opening. One or two or more sample panel frames installed, and one sound insulation panel frame with sound insulation panels firmly attached
The samples are housed in the sample panel frame accommodating portion of the swivel truck so that their side surfaces face each other in an upright shape. It is preferable that the sample panel frame is provided with wheels on its lower surface so as to be movable on the traveling rail, and at the upper part thereof, can be engaged and slid with the guide rail so that the moving posture can be stably maintained.

Although the swivel carriage and the sample panel frame can be moved manually, usually, the sample panel frame is
Each piece has a weight of 3 to 5 tons, and the swivel trolley has a weight of about 10 tons.
It is desirable to arrange a limit switch or the like on each moving path to control the movement. In particular, it is very advantageous in terms of equipment and operation that the sample panel frame has a built-in storage battery power source and is of a self-propelled type.

[0013]

The present invention has the above-mentioned structure, and between the chambers of the test equipment at the outer side close to one side of the acoustic test equipment in which the anechoic chamber, the first reverberation room, and the second reverberation room are sequentially connected. In conformity with the insertion space of the two sample panel frames formed, the turning carriage is moved along the arc-shaped movement path, and any one of the plurality of sample panel frames housed and held in the housing portion on the upper surface thereof is By matching the movement path with one of the insertion spaces, the sample panel frame can be inserted and mounted, the inserted sample panel frame can be removed, and thereby the replacement and insertion can be performed easily and reliably.

[0014]

【Example】

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of an essential part schematically showing the arrangement of the apparatus, and FIG.
2 is a sectional view taken along line XX in FIG. 3, and FIG. 3 is a sectional view taken along line YY in FIG. As shown in FIG. 1, the acoustic test apparatus includes an anechoic chamber A, a first reverberation chamber B, and a second reverberation chamber C provided with two sample panel frame insertion spaces S and S'between opposed wall surfaces. The chain double-dashed lines T and T'showing the linear insertion / removal transfer direction of the sample panel frame from the side with respect to the two insertion spaces S, S'are non-parallel to each other, and their extension lines are the apparatus. It has an intersection O on the outside of one side.

The swivel carriage 1 for accommodating and holding the three sample panel frames 3 is provided between the intersection O and the acoustic test equipment.
It is provided so as to make two circular arcs having different turning radii about the intersection O and move on an arcuate parallel rail 5 composed of rails 5 ', 5 "installed on the floor surface. As shown in FIG. 3, wheels 11 and 12 that roll on the arcuate parallel rails 5 are provided on the lower surface, and columns 21 that are respectively erected at the four corners of the upper surface thereof, and beams 22 that connect the heads of the respective columns 21 are provided. And a sample panel frame accommodating portion 2 including three traveling rails 25 provided on the upper surface of the swivel carriage 1 and three guide rails 26 provided between the beams 22 of the frame structure. The traveling rails 25 and the guide rails 26 of the accommodation portion 2 of the sample panel frame described above each have a linear direction passing through the intersection O and form a pair of upper and lower sides to form one sample panel frame 3 and the swivel carriage 1. Hold the vehicle so that it can travel in the radial direction of the arc of the moving path. Reference numeral 6 denotes a guide rail which is arranged in an arc shape on the ceiling surface of the building or the like in order to maintain the moving posture of the swivel carriage 1, and a guide member which engages and slides on the guide rail is provided on the beam 22 of the accommodating portion 2. Provide on the top surface.

Each of the three sample panel frames 3 accommodated in the accommodating portion 2 of the swivel carriage 1 has a rectangular opening of a predetermined size at the center of the side surface thereof, and a traveling rail 25 on the upper surface of the swivel carriage 1 on the lower surface thereof. A wheel 35 ′ that rolls up is provided, and a guide member 36 that engages and slides with a guide rail 26 provided on the upper portion of the housing 2 is provided on the upper surface of the wheel 35 ′. Then, one of the above sample panel frames 3 is mounted with a sound insulating panel 31 made of concrete or the like in its rectangular opening to form a sound insulating panel frame, and the other two are mounted with test panels 32 for measurement, respectively. To make a sample panel frame.

On the other hand, in the insertion spaces S and S'of the two sample panel frames 3 provided between the chambers of the acoustic test apparatus, rectangular measurement openings 40 are provided facing the wall surfaces of the chambers. So that the sample panel frame 3 can be inserted and transferred according to
The traveling rail 45 and the guide rail 46 are arranged at the same level as the guide rail 26 so that their ends can be located close to each other. Reference numeral 60 denotes a pressure-air expansion type sealing member provided on the outer peripheral wall surface of each measurement opening 40 of each test chamber A, B, C, and a sample panel frame inserted in an appropriate position in the insertion spaces S, S '. 3 is closely contacted with the peripheral surfaces on both sides to prevent the side propagation of sound.

Further, in FIG. 2, M surrounded by a broken line is
A reversible electric motor for swiveling movement installed in the swivel carriage 1 and connected to an external power source for drive control. M ′ and E surrounded by broken lines are installed in the sample panel frame 1 A reversible electric motor for traveling and its storage battery power supply, which are drive-controlled by an operation panel connected to an outlet provided in the frame 3.

Further, FIGS. 4 and 5 show arcuate parallel rails 5.
FIG. 2 is a plan view and a side view showing respective main parts for explaining the state of the swivel truck 1 traveling above.
Is supported by two large-diameter wheels 11 located on the four corners of the lower surface and riding on an arcuate rail 5'having a large turning radius, and two small-diameter wheels 12 riding on an arcuate rail 5'having a small turning radius, The axles of the pair of large and small wheels 11, 12 are
Universal joints 1 at both ends of the intermediate shaft 15
6, 17 and are rotationally driven by the electric motor M to maintain the same rotation angle on the arcuate parallel rails 5 by the rotation of the wheels 11 and 12, respectively.
The swivel carriage 1 is smoothly moved, and the traveling rail 25 of the sample panel frame 3 provided on the upper surface of the swivel carriage 1 always maintains the traveling direction that coincides with the radius of rotation of the arc moving path.

In the apparatus of the embodiment configured as described above, the sample panel frame 3 having the test panel 32 mounted thereon is moved to a predetermined position in the insertion space S between the anechoic chamber A and the first reverberation chamber B in the illustrated state. After running and inserting, the swing carriage 1 is swung to the position of the alternate long and short dash line 1 ', and the sound insulation panel 3 held in the housing 2 is held.
1 is mounted in the first reverberation room B in the traveling direction of the sample panel frame 3.
And the insertion space S'between the second reverberation room C and
The sample panel frame 3 is inserted to a predetermined position, and compressed air is supplied to a sealing member 60 provided on the outer peripheral wall surface of each measurement opening 40 in each test chamber to sandwich and support each side surface of each sample panel frame 3. By doing so, the sound insulation panel 31 can be used to cut off between the first and second reverberation chambers B and C, and the acoustic emission characteristics of the test panel 32 can be measured between the anechoic chamber A and the first reverberation chamber B. In addition, the second reverberation chamber C can measure the sound absorption coefficient for other samples inside the second reverberation chamber C.

The sample panel frame 3 which has been subjected to the above test is
After depressurizing and compressing the compressed air of the sealing member 60, the swivel carriage 1 is retrogradely accommodated in an empty seat of the accommodating portion 2 of the swivel carriage 1, and the swivel carriage 1 is moved to insert another sample panel frame 3 so as to pull it. Then, a test can be performed, and the two sample panel frames 3 inserted into the above-mentioned insertion spaces S and S ′ are sequentially ejected and replaced to replace the acoustic waves in the first and second reverberation chambers B and C. It is also possible to measure the transmission loss and the sound power level in the independent anechoic chamber A.

In this embodiment, the case where three sample panel frames 3 are accommodated and held in the accommodating portion 2 of the swivel vehicle 1 has been described, but substantially the same test is possible even if the number of the sample panel frames 3 is two. In some cases, it may be preferable to change the design of the large number of test panels 31 so that the number of sample panel frames 3 of the container 2 is increased to four or more in order to perform the test more efficiently.

As described above, the sample panel frame inserting / removing device of the present invention is provided between the anechoic chambers, the first reverberation chamber, and the second reverberation chamber in the acoustic test chamber. With respect to the insertion space of the two sample panel frames in non-parallel directions, any one of the plurality of sample panel frames 3 held on the swivel carriage 1 is inserted by matching the transfer paths only by moving the swivel carriage. The removal and replacement can be facilitated and the installation area can be reduced, and the effect of streamlining the rationalization test of the acoustic test equipment can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view of a main part schematically showing the arrangement state of a device.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a sectional view taken along the line YY of FIG.

FIG. 4 is a plan view showing an upper surface of the swivel cart 1.

5 is a side view of the swivel cart 1. FIG.

[Explanation of symbols]

 1 Revolving bogie 2 Storage part 3 Sample panel frame 5 Circular parallel rail 25 Traveling rail 31 Sound insulation panel 32 Test panel A Anechoic chamber B 1st reverberation chamber C 2nd reverberation chamber E Storage battery M Electric motor M'Electric motor O Intersection S Insertion space S ′ Insertion space T Insertion / removal transfer direction T ′ Insertion / removal transfer direction

Claims (3)

[Scope of utility model registration request] 1. An anechoic chamber (A), a first reverberation room (B), a second
In a sample panel frame inserting / removing device which is provided outside one side of an acoustic test device, in which a reverberation chamber (C) is connected to form a space (S, S ') for inserting a sample panel frame between the chambers, The device moves along an arc direction centered on an intersection (O) of an extension line of the insertion / removal transfer direction (T, T ') of the sample panel frame (3) with respect to the two insertion spaces (S, S'). A possible swivel carriage (1) and a plurality of trial panel frames (3) located on each of a plurality of radial directions obtained by dividing an arc centered on the intersection (O) on the swivel carriage (1). And an accommodating portion (2) for holding the sample panel frame in parallel with each other so as to be movable in the radial direction. 2. A sound insulation panel (31) is attached to one of a plurality of sample panel frames (3) accommodated and held in an accommodation portion (2) of the sample panel frame on the swivel carriage (1), and the other is a test panel. The sample panel frame insertion / removal device for an acoustic test device according to claim 1, wherein (32) is mounted. 3. The turning carriage (1) has a built-in electric motor (M) which is connected to an external power source and driven and controlled, whereby traveling movement control is performed on an arcuate parallel rail (5),
The sound according to claim 1, wherein each sample panel frame (3) has a storage battery (E) and an electric motor (M ') built in the frame, and the traveling movement control in the insertion / removal transfer direction is performed by this. Device for inserting and removing the sample panel frame of the test equipment.