JPH04130041U - Sample panel frame insertion/removal device for acoustic testing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] For the insertion spaces S and S' of two sample panel frames 3 of an acoustic test equipment in which an anechoic chamber A, a first reverberation chamber B, and a second reverberation chamber C are successively installed. , facilitates the insertion and removal of a plurality of sample panel frames 3 accommodated on the rotating carriage 1. [Structure] A rotating trolley 1 that can move on an arcuate parallel rail 5 centered at the intersection O of the extension lines in the insertion direction of the two insertion spaces S and S' of the acoustic testing device, and a rotating trolley 1 that , a plurality of sample panel frames are accommodated vertically in parallel so that they can be moved along a plurality of straight lines passing through the intersection O.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is an acoustic test equipment that consists of an anechoic chamber, a first reverberation chamber, and a second reverberation chamber installed in sequence. For details regarding the insertion/removal device for the sample panel frame in the acoustic test equipment, please refer to the Insert/remove the sample panel frame from the side of the insertion space of the two sample panel frames. The object is to provide a device that can be replaced easily and efficiently.

0002

[Conventional technology]

Traditionally, anechoic chambers and reverberation chambers have been used to measure the acoustic characteristics of various materials and devices. Test equipment is used either singly or in combination with two chambers, especially in combination with two chambers. In this equipment, there is an insertion space between the two chambers for the sample panel frame with the panel to be measured mounted. The sample panel frame can be inserted and removed from the outside of the device to improve measurement efficiency. It is also already known that the method of measuring Ru.

0003 Furthermore, in recent years, an anechoic chamber, a first reverberation chamber, and a second reverberation chamber have been constructed, with sample panels placed between each chamber. The three-chamber test device, which is successively installed with a space for the insertion of a cell frame, can be used for various acoustic test conditions. It has come to be used favorably as a means to efficiently carry out measurements that meet specific requirements. .

0004 This three-chamber test device is equipped with a wall facing the insertion space for the sample panel frame between each chamber. A measurement opening with a predetermined area is formed on each surface, and a sound insulation panel is placed in one insertion space. A sample panel frame with a test panel attached to it is inserted, and a sample with a test panel attached to the other insertion space. By inserting a panel frame, the space between the anechoic chamber and the first reverberation chamber or the first reverberation Sound emission power characteristics and sound transmission loss of the test panel between the room and the second reverberation room Measurements of the acoustic power level of materials, equipment, and even independent anechoic chambers and reverberation chambers , it is possible to selectively measure the sound absorption coefficient.

[0005]

[Problem that the idea aims to solve]

Insertion of two sample panel frames between each chamber in the above three-chamber test device As a means for inserting and removing the sample panel frame into the space, the above-mentioned Japanese Patent Publication No. 58- Although the hoist running transfer method shown in Publication No. 53851 can be adopted, Since the reverberation chamber has non-parallel walls, the sample from the side for the two insertion spaces The direction of insertion and removal of the panel frame is also inevitably non-parallel, and the two hoist travel rails are The structure would be complicated if it were to be compatible with both of these and to be able to switch between the transfer routes. However, there are problems such as requiring a relatively large device area and making operation difficult. Ta.

[0006]

[Means to solve the problem]

The present invention is based on the insertion of two sample panel frames into the three-chamber acoustic test equipment mentioned above. The test equipment is used as a transportation means for inserting and replacing the sample panel frame in the space. A rotating stand that can move in an arc direction accommodates and holds multiple sample panel frames on one side outward. By using a car, the above-mentioned problems of conventional hoist traveling transportation methods are solved. It is something.

[0007] In other words, the present invention consists of an anechoic chamber, a first reverberation chamber, and a second reverberation chamber, with sample panels placed between each chamber. A sample panel is installed outside one side of the acoustic testing device, which is formed by forming an insertion space for the sample frame. In the panel frame insertion/removal device, the device inserts the sample panel frame into the two insertion spaces. Rotation that allows movement along an arc centered on the intersection of the extension lines of the insertion/extraction transfer direction a truck, and a plurality of halves divided by an arc centered at the intersection point on the rotating truck. A plurality of sample panel frames located in each radial direction are arranged in an upright manner in the radial direction. A sample of an acoustic test device characterized by a sample panel frame storage section that is movably held in parallel. The gist is a panel frame insertion/removal device.

[0008] The acoustic test equipment consists of three consecutive rooms: an anechoic chamber, a first reverberation chamber, and a second reverberation chamber. Sample patterns are placed between the opposing walls of the first reverberation chamber and between the opposing walls of the first reverberation chamber and the second reverberation chamber. A space for inserting a panel frame will be provided, but the anechoic chamber will be designed to create a sufficiently diffused sound field. Since it is surrounded by non-parallel walls, it is difficult to test the two insertion spaces from the side. The linear insertion/removal direction of the panel frame is inevitably non-parallel, and The extension lines of the two insertion/removal directions intersect.

[0009] In the present invention, the rotating cart is placed as close as possible to one side of the test equipment, and the above-mentioned two An arc centered on the intersection of the extension lines in the insertion/removal direction of the sample panel frame with respect to the insertion space. A plurality of specimens held in the specimen panel frame accommodating portion on the revolving trolley Each of the panel frames is located in the radial direction of the arc and has an elevational shape. Since it is designed to be able to move in the direction, any of the test equipment can be Movement of one of the multiple sample panel frames housed on the rotating cart with respect to the insertion space of It becomes possible to adapt the route so that it becomes a straight line.

0010 The rotating cart can also be a turntable type with a fixed center axis, but the installation surface From the viewpoint of load and other aspects, it is assumed that it is a trolley type supported by four wheels that moves on arc-shaped parallel rails. It is preferable that the turning radius of the parallel rails be The diameter of the wheel is adjusted to the ratio of its turning radius, and the diameter of the wheel is determined by its large and small diameter. A pair of axles are connected by an intermediate shaft via a universal joint, and their rotation is driven. It is desirable to achieve smooth turning movement by doing this.

[0011] The sample panel frame is a fan-shaped structure with great strength, rigidity, and sound insulation, with a rectangular opening of 10 m ² in principle formed in the center of the metal frame, and the test panel is tightly fixed to the opening. One or more sample panel frames installed and one sound insulating panel frame with a sound insulating panel closely fixed are housed in the sample panel frame accommodating part of the revolving cart with their sides facing each other in an upright manner. do. It is preferable that this sample panel frame is provided with wheels on its lower surface so as to be movable on a running rail, and that its upper portion is slidably engaged with a guide rail so that its moving posture can be stably maintained.

0012 The above-mentioned rotating cart and sample panel frame can be moved manually, but Each regular sample panel frame has a weight of 3 to 5 tons, and the rotating cart has a weight of about 10 tons. Therefore, each has a built-in electric motor and a limit is placed on each movement path. It is desirable to control the movement by installing a switch, etc., especially in the sample panel frame. Having a built-in battery power source and making it self-propelled is extremely advantageous in terms of equipment and operation. be.

[0013]

[Effect]

This invention uses the above-mentioned configuration to sequentially install an anechoic chamber, a first reverberation chamber, and a second reverberation chamber. A space formed between each chamber of the acoustic testing apparatus on the outside adjacent to one side of the acoustic testing apparatus The rotating cart is moved along an arcuate movement path to fit the insertion space of the two sample panel frames. Move any one of the multiple sample panel frames stored and held in the storage section on the top surface. , align the movement path with one of the insertion spaces mentioned above, and insert the sample panel frame into the insertion device. This allows for actions such as insertion, removal of the inserted sample panel frame, and replacement insertion. It can be done easily and reliably.

[0014]

【Example】

Embodiments of the present invention will be described with reference to the drawings. Figure 1 is a plan view of the main parts schematically showing the arrangement of the device, and Figure 2 is taken along the XX line in Figure 1. FIG. 3 is a sectional view taken along the YY line in FIG. 2. As shown in Figure 1, the acoustic test equipment consists of an anechoic chamber A, a first reverberation chamber B, and a second reverberation chamber C. Insertion spaces S and S' for two sample panel frames are provided between the opposing walls of the chambers in a continuous configuration. The sample panel frame is inserted linearly from the side into the two insertion spaces S and S'. The two-dot chain lines T and T' indicating the detransfer direction are non-parallel, and their extension line is the direction of the device. It has an intersection O on one side outward.

[0015] A rotating cart 1 that accommodates and holds three sample panel frames 3 is connected to the intersection O and the acoustic test equipment. Two circular arcs with different rotation radii are formed around the intersection point O, The robot moves on arc-shaped parallel rails 5 made up of rails 5' and 5'' installed on the floor. established in As shown in FIGS. 2 and 3, this rotating truck 1 rolls on arc-shaped parallel rails 5 on the lower surface. Pillars 21 each have movable wheels 11 and 12 and are erected at the four corners of the upper surface thereof, and A frame structure consisting of beams 22 connecting the heads of each column 21 and a structure provided on the top surface of the rotating truck 1. Three running rails 25 and three guide rails 26 provided between the beams 22 of the frame structure. It has a sample panel frame accommodating part 2 consisting of. The running rail 25 and guide rail 26 of the housing section 2 of the sample panel frame mentioned above are both A pair of upper and lower sample panel frames 3 having a linear direction passing through the intersection O are rotated. The trolley 1 is held so as to be movable in the radial direction of the circular arc along the travel route of the trolley 1. 6 is arranged in an arc shape on the ceiling of the building to maintain the moving posture of the rotating trolley 1. A guide member, which is a guide rail and slides in engagement with the guide rail, is provided on the upper surface of the beam 22 of the housing section 2. Let's go.

[0016] All three sample panel frames 3 accommodated in the accommodating section 2 of the rotating cart 1 are A rectangular opening with a predetermined size is provided at the center of the side surface, and the upper surface of the rotating trolley 1 is provided with a running surface on the lower surface thereof. A wheel 35' rolling on the rail 25, and a guide rail provided on the top surface of the wheel 35' at the top of the storage section 2. A guide member 36 is provided which slides into engagement with the wheel 26. One of the above sample panel frames 3 has a rectangular opening made of concrete, etc. A sound insulation panel 31 is attached to form a sound insulation panel frame, and the other two are each equipped with a sound insulation panel 31 for measurement. The test panel 32 is attached to form a sample panel frame.

[0017] On the other hand, there is an insertion space S for two sample panel frames 3 provided between each chamber of the acoustic test equipment. , S' are each provided with a rectangular measurement opening 40 facing the wall surface of each chamber. In order to be able to insert and transfer the sample panel frame 3 in accordance with the At the same level as the running rail 25 and guide rail 26 provided, the running rail 45 and the guide rail 26 are installed. The rails 46 are arranged so that they can be located close to each end. In addition, 60 is a pressure air provided on the peripheral outer wall surface of each measurement opening 40 in each test chamber A, B, and C. It is an inflatable sealing member, and the sample panel is inserted into the proper position of the insertion spaces S and S'. It is in close contact with both side peripheral surfaces of the frame 3 to prevent side-path propagation of sound.

[0018] In addition, in FIG. 2, M surrounded by a broken line indicates a turning movement built into the turning trolley 1. A reversible electric motor for use that is connected to and controlled by an external power source. M' and E surrounded by broken lines are the running parts built into the sample panel frame 1. A reversible electric motor and its storage battery power source, which are provided in the frame 3. The drive is controlled by an operation panel connected to an outlet.

[0019] Furthermore, FIGS. 4 and 5 illustrate the state of the rotating cart 1 running on the arcuate parallel rails 5. FIG. 1 is a plan view and a side view showing the main parts for clarity, and the rotating trolley 1 is Located at the four corners of the lower surface, two large diameter rails ride on arcuate rails 5' with a large turning radius. A wheel 11 and two small-diameter wheels 12 riding on an arcuate rail 5 with a small rotation radius. The axles of the pair of large and small wheels 11 and 12 are supported at both ends of the intermediate shaft 15. connected by universal joints 16 and 17, and connected to the electric motor M. Therefore, it is rotationally driven, and by the rotation of each wheel 11, 12, an arcuate parallel rail is formed. The rotating trolley 1 is moved smoothly on the wheel 5 while maintaining the same rotation angle. The traveling rail 25 of the sample panel frame 3 provided on the upper surface of the trolley 1 always follows the arcuate movement path. This maintains the running direction consistent with the rotation radius of the road.

[0020] The embodiment device configured as described above operates the test panel 32 in the state shown in the figure. Place the attached sample panel frame 3 at a predetermined position in the insertion space S between the anechoic chamber A and the first reverberation chamber B. After traveling and inserting it, move the rotating cart 1 to the position indicated by the dashed line 1' and insert it into the storage section. The traveling direction of the sample panel frame 3 equipped with the sound insulation panel 31 held in Place the sample panel frame 3 in the same position as the insertion space S' between B and the second reverberation chamber C. The sealing portion is inserted into the fixed position and provided on the outer wall surface of the periphery of each measurement opening 40 in each test chamber. By supplying pressurized air to the material 60 and supporting and sealing each side of each sample panel frame 3 with pressure. Therefore, the first and second reverberation chambers B and C are isolated by the sound insulating panel 31, and the anechoic chamber A and the second reverberation chamber are separated. 1 to measure the acoustic radiation characteristics of the test panel 32 between the reverberation room B and The second reverberation chamber C can be used to measure sound absorption coefficients for other samples inside. You can also do

[0021] After completing the above test, the sample panel frame 3 is deflated by removing the pressure from the sealing member 60. After that, it is stored in the empty seat of the storage section 2 of the rotating trolley 1 in the reverse direction, and the rotating trolley 1 is moved. Tests can be continued by moving and inserting another sample panel frame 3. , Furthermore, the two sample panel frames 3 inserted into the insertion spaces S and S' are sequentially removed. By replacing and inserting the It is also possible to measure the sound power level in a separate anechoic chamber A.

[0022] In this embodiment, three sample panel frames 3 are accommodated and held in the accommodation section 2 of the rotating cart 1. Although we have explained the case where there are two sample panel frames 3, almost the same test is possible. In addition, for a large number of test panels 31, in order to conduct the test more efficiently, it is necessary to It is preferable to change the design so that the number of sample panel frames 3 accommodated in No. 2 is increased to four or more. Sometimes it's good.

[0023] As explained above, the sample panel frame insertion/removal device of the present invention can be used in an anechoic chamber and a first reverberation chamber. , a non-parallel structure between each chamber in an acoustic test room consisting of a series of second reverberation chambers. For the insertion space of the two sample panel frames in the direction, a plurality of Match any one of the sample panel frames 3 to its transfer path by simply moving the rotating cart. At least it can be easily inserted and removed, and its installation area can be reduced. Rationalization of acoustic test equipment, etc. that can achieve the effect of streamlining test implementation. It is.

[Brief explanation of drawings]

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

FIG. 2 is a sectional view taken along the XX line in FIG. 1;

FIG. 3 is a sectional view taken along the YY line in FIG. 2;

FIG. 4 is a plan view showing the top surface of the rotating truck 1. FIG.

FIG. 5 is a side view of the turning truck 1. FIG.

[Explanation of symbols]

1 Swivel trolley 2 Accommodation section 3 Sample panel frame 5 Arc-shaped parallel rail 25 Traveling rail 31 Sound insulation panel 32 Test panel A Anechoic chamber B 1st reverberation room C Second reverberation room 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] [Claim 1] Anechoic chamber (A), first reverberation chamber (B), second reverberation chamber
In a sample panel frame insertion/removal device provided outside one side of an acoustic testing apparatus in which reverberation chambers (C) are arranged in series with sample panel frame insertion spaces (S, S') formed between each chamber, The device moves along an arcuate direction centered on the intersection (O) of the extension line of the insertion/extraction transfer direction (T, T') of the sample panel frame (3) with respect to the two insertion spaces (S, S'). a rotating trolley (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 point (O) on the rotating trolley (1); A sample panel frame insertion/removal device for an acoustic testing apparatus, characterized in that the sample panel frame insertion/removal device for an acoustic testing apparatus is characterized in that it has an accommodating portion (2) for sample panel frames which are held vertically in parallel so as to be movable in the radial direction. 2. One of the plurality of sample panel frames (3) accommodated and held in the sample panel frame accommodating portion (2) on the rotating cart (1) is equipped with a sound insulating panel (31), and the others are equipped with a test panel. (32) The sample panel frame insertion/removal device for an acoustic testing apparatus according to claim 1, wherein the sample panel frame insertion/removal device is equipped with the following: (32). 3. The rotating trolley (1) has a built-in electric motor (M) that is connected to an external power source and is driven and controlled, and is thereby controlled to travel on the arc-shaped parallel rail (5),
The acoustic device according to claim 1, wherein each sample panel frame (3) has a storage battery (E) and an electric motor (M') built therein, thereby controlling running movement in the insertion/extraction transfer direction. Test equipment sample panel frame insertion/removal device.