JP3270569B2 - Environmental test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environmental test apparatus for investigating the cause of damage to cargo during a distribution process and for researching and developing measures for preventing damage, and more particularly to a cover body for forming an enclosed space. It relates to the improvement of the structure.

[0002]

2. Description of the Related Art Generally, when a cargo is transported or stored in a warehouse or the like, it is the temperature, humidity and vibration that cause the cargo to be damaged in the process. In order to faithfully reproduce the transport environment and storage environment, it must be installed in a temperature- and humidity-controlled enclosed space, observe its changes, and if necessary, adjust the temperature and humidity. Shock and vibration tests need to be performed under wet conditions.

[0003] Further, most cargo is not only transported or stored only, but is often stored after transported, transported after storage, or repeatedly transported and stored. In order to determine the cause of damage to cargo during the distribution process, tests under the transport environment and tests under the storage environment should not be performed independently, but under each environment during the distribution process. It is desirable to carry out continuously.

[0004]

By the way, in order to continuously perform tests under each environment in the distribution process, a large test specimen such as a marine container can be carried in and a test chamber having a closed space inside the test chamber. It is conceivable to set up a table and drive the shaking table to create a transport environment, and to stop the shaking table to create a storage environment. In this method, however, one specimen is shaken for a long period of time. There is a problem in that the table is monopolized and the test efficiency is low.

As a method for solving this problem, a storage test room is provided separately from a test room having a shaking table, and a test in a storage environment is performed in the storage test room. It is conceivable that this method requires two test rooms, and even in the case of a shock / vibration test that does not require temperature control and humidity control, a device that controls temperature and humidity must be installed in the test room. Since it must be provided, there is a problem that enormous equipment costs are required.

The present invention has been made in view of such a situation, and enables a test under each environment in a distribution process to be performed continuously, and a single test piece to monopolize a shaking table for a long time. It is an object of the present invention to provide an environmental test apparatus that does not require any equipment and can greatly reduce equipment costs.

Another object of the present invention is to provide an environmental test apparatus capable of suppressing internal pressure fluctuations in a closed space due to vibration of a specimen.

Another object of the present invention is to provide an environmental test apparatus capable of adjusting the size of a closed space according to the size of a test sample and stabilizing temperature control and humidity control.

Still another object of the present invention is to provide an environmental test apparatus capable of uniformly controlling temperature and humidity in a closed space.

[0010]

According to the present invention, as a means for achieving the above object, a shaking table on which a specimen is mounted and fixed;
A test table which is adjacent to the shaking table and performs a test of the test piece in a stationary state; a cover body which moves between the shaking table and the test table to enclose the test piece and has an enclosed space inside And temperature and humidity adjusting means for adjusting the temperature and humidity in the enclosed space.

In the present invention, it is preferable that a door is provided at at least one end in the moving direction of the cover for carrying in and out the specimen by relative movement between the specimen and the cover.

The cover body comprises a hard wall portion at the center in the moving direction thereof; and a soft cover portion provided on both sides of the hard wall portion and comprising an aggregate and a soft film material. It is preferable that the adjusting means is connected via the hard wall portion, and it is more preferable that the soft cover portion has a structure capable of expanding and contracting in the moving direction of the cover body.

Further, a dispersing member for distributing the temperature- and humidity-controlled air from the temperature / humidity adjusting means over the entire area of the cover body and discharging it downward from a number of discharge holes is provided immediately below the top surface of the cover body. The opening area per unit area of the discharge hole
More preferably, the distance from the supply section of the humidified air to the cover body is set smaller.

[0014]

In the environmental test apparatus according to the present invention, since the shaking table and the test table are provided adjacent to each other, the test in the transport environment and the storage environment can be performed simply by moving the specimen between the two tables. The test below can be performed continuously, and there is no problem that one specimen monopolizes the shaking table. In addition, since the cover body forming the closed space is structured to move between the vibration table and the test table and to include the specimen, it is not necessary to provide two test chambers,
Only one temperature / humidity adjusting means is required, and it is possible to greatly reduce equipment costs.

In the present invention, a vibration table or a test table is provided at at least one end in the moving direction of the cover by which a test object is carried in and out by relative movement between the test object and the cover. The cover body can be moved while the specimen is set on the top.

Further, the cover body comprises: a hard wall portion at the center in the moving direction; and a soft cover portion provided on both sides of the hard wall portion and made of an aggregate and a soft film material. By connecting the adjusting means via the hard wall portion, it is possible to reduce the weight of the cover body and to suppress the internal pressure fluctuation of the closed space due to the vibration of the specimen by the movement of the film material. Become.

Further, by making the soft cover portion expandable and contractible in the moving direction of the cover body, the size of the cover body can be adjusted according to the size of the specimen, and the temperature control and humidity control can be stably performed. It is possible to do.

Further, a dispersing member for distributing the temperature- and humidity-controlled air from the temperature / humidity adjusting means over the entire area of the cover body and discharging it downward from a number of discharge holes is provided immediately below the top surface of the cover body. The opening area per unit area of the discharge hole
The temperature and humidity in the closed space can be more quickly uniformed by setting the humidity control air to be smaller as the distance from the supply portion to the cover body increases.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows an environmental test apparatus according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a book foundation of a test building, and a buffer mechanism 2 such as an air spring is provided on the book foundation 1. Floating foundation 3
Is supported, so that a vibration generated in a vibration table 4 described later can be prevented from being transmitted to the foundation 1 side.

A concave portion 5 is provided on the floating base 3 as shown in FIG. 1, and a shaking table 4 on which a specimen 6 is mounted and fixed is mounted on the upper surface. 3 is arranged substantially flush with the upper surface, and vibration is applied by a vibrating mechanism 7 disposed in the recess 5. And
A space between the inner peripheral edge of the concave portion 5 and the outer peripheral edge of the vibration table 4 is closed by a seal member 8.

At a position adjacent to the shaking table 4 on the floating base 3, the test piece 6 in a stationary state as shown in FIGS.
A test table 9 for performing the test of
Is a cover 10 moving between the vibration table 4 and the test table 9
Thereby, it is selectively included on the vibration table 4 or the test table 9.

That is, as shown in FIG. 2, two running rails 11 are laid on both sides of the vibrating table 4 and the test table 9 on the floating foundation 3, and the cover 10 is
It travels on the traveling rail 11.

As shown in FIGS. 3 to 6, the cover body 10 has a hard wall portion 12 at the center in the moving direction.
And a soft cover portion 13 provided on each side of the hard wall portion 12 to form a closed container 14 which opens downward and has a closed space 14 as described later in detail. ing.

As shown in FIGS. 3 to 6, the hard wall portion 12 is formed of a heat-insulating hard material in the shape of a tunnel, and has a temperature control and humidity control air on one side. Supply port 15 is provided,
An air outlet 16 in the cover body 10 is provided on the lower side, and a viewing window 17 for monitoring the inside of the cover body 10 from the outside is provided on the other side. The supply port 15 and the discharge port 16 are connected to a temperature / humidity adjusting device 18 shown in FIG. 1 via a flexible hose (not shown) so that the inside of the cover body 10 can be adjusted in temperature and humidity.

Further, each of the soft cover portions 13 is shown in FIG.
As shown in FIG. 6 and FIG.
And a film material 20 that covers the outside of these aggregates 19. The film material 20 is formed of a soft material having heat insulating properties. By changing, the cover body 10 can be expanded and contracted in the moving direction.

As shown in FIGS. 3 and 4, a double door-shaped heat insulating door 21 for a test object and a heat insulating door 22 for a person are provided on the wife surface of the soft cover portion 13, respectively. By opening the door 21 to both sides, the cover 10 can be moved while the specimen 6 is placed on the vibration table 4 or the test table 9.

As shown in FIGS. 5 and 6, the lower end of the hard wall portion 12 and the lower end of each aggregate 19 roll on the two running rails 11 while being prevented from coming off. Each of the guide roller mechanisms 23 is provided. The guide roller mechanism 23 of the hard wall portion 12 is provided with a lock mechanism 24 for fixing the cover body 10 to an arbitrary position on the traveling rail 11.

At a position directly below the top surface in the cover body 10,
As shown in FIGS. 5 and 6, two soft sheet-like dispersion members 25 and 26 are horizontally arranged adjacent to each other in the same plane, and the outer end of each dispersion member 25 and 26 is provided. Is fixed to a fixing bar 27 fixed to the aggregate 19 at the end of the soft face of the soft cover portion 13 at the end face side, and each dispersing member 2
The inner ends of the winding members 5 and 26 are wound around winding drums 28 and 29 disposed in the hard wall portion 12 and are constantly urged in the winding direction by a spring force.
The intermediate portions 5 and 26 are supported from below by a support bar 30 fixed to the aggregate 19 and the hard wall portion 12. As shown in FIGS. 5 and 6, the dispersing members 25 and 26 are wound and unwound on the winding drums 28 and 29 in accordance with the expansion and contraction of the soft cover portions 13, respectively. , 26 are formed on the upper surface side.

As shown in FIG. 7, a large number of discharge holes 32 are formed in each of the dispersing members 25 and 26, and the temperature-controlled and humidified air supplied from the supply port 15 into the cover body 10 are provided. Is spread over the entire area of the cover body 10 by the air duct 31 and then discharged downward from the discharge holes 32.

Each of the discharge holes 32 is formed of a round hole having the same diameter of 50 mm or less, preferably 30 mm or less. The opening area per unit area of the discharge holes 32 is away from the supply port 15. It is set so that it becomes smaller gradually according to. Specifically, on the side near the supply port 15, the discharge holes 32 are densely formed, and as the distance from the supply port 15 increases, the pattern of forming the discharge holes 32 gradually becomes coarse. And by this, the cover body 10
The flow rate of the temperature control and humidity control air supplied to the inside
It is possible to completely match in each place.

The peripheral edge of the lower end of the cover 10 is
As shown in FIG. 2, a skirt 33 is provided, and the lower edge of the skirt 33 is inserted into a seal groove 35 whose inside is filled with an antifreeze 34. As a result, a sufficient hermeticity can be obtained even with a structure in which the cover body 10 can be moved.

The skirts 33 arranged on both sides of each soft cover portion 13 are bent together with the film material 20 in accordance with expansion and contraction of the soft cover portion 13. Skirt 33 arranged on
Can be turned up and fixed or removed so as not to hinder the movement of the cover body 10.

The seal groove 35 is, as shown in FIG.
Two longitudinal grooves 35a respectively provided outside the two running rails 11, two lateral grooves 35b connecting both ends of both longitudinal grooves 35a, and two longitudinal grooves 35a. And an inner groove 35c for a test table, an inner groove 35d for a test table, and a groove 35e at the time of reduction.
The traveling rail 11 at a portion corresponding to c, 35d and the groove 35e at the time of reduction is a detachable rail 11a that can be turned 90 degrees with one end as a fulcrum. Thus, when the skirt 33 seals the peripheral edge of the lower end of the cover body 10, the sealing performance of the traveling rail 11 is not hindered.

Next, the operation of this embodiment will be described.
In a test under a transportation environment, a specimen 6 such as a marine container is placed and fixed on the shaking table 4 and the cover 1 is fixed.
0 is moved to the position of the shaking table 4 and the specimen 6 is included.
At this time, if the specimen heat insulating door 21 of the soft cover unit 13 is opened, the cover body 10 can be moved while the specimen 6 is installed on the vibration table 4.

Next, the cover body 1 is
0 and the opened heat insulating door 21 for the specimen is closed, and the skirt 33 around the lower edge of the cover body 10 is closed.
Is inserted into the seal groove 35. Specifically, the skirt 33 is inserted into the two longitudinal grooves 35a, the one lateral groove 35b, and the shaking table inner groove 35c. At this time, the detachable rail 1 corresponding to the shaking table inner groove 35c is used.
1a is previously rotated inward by 90 degrees as shown by a chain line in FIG. Thereby, the inside of the cover body 10 becomes the closed space 14.

Next, the temperature / humidity adjusting device 18 is started to control the temperature and humidity in the closed space 14, and the vibration mechanism 7 is started to vibrate the specimen 6 together with the vibration table 4.

The temperature- and humidity-controlled air from the temperature / humidity controller 18 is supplied from the supply port 15 into the air duct 31 and spreads over the entire area in the horizontal direction.
From below. Then, the pressure in the air duct 31 increases as the distance from the supply port 15 increases. Therefore, when the ejection holes 32 are evenly arranged,
Due to the pressure gradient in the air duct 31, the flow rates of the temperature-controlled and humidity-controlled air cannot be made completely the same at various places in the cover 10.

However, in this embodiment, the discharge holes 3
(2) Since the opening area per unit area is set to gradually decrease as the distance from the supply port 15 increases, the temperature control and the flow rate of the humidified air must be completely the same at various places in the cover body 10. The temperature and humidity distribution can be made uniform.

When the vibrating table 4 is vibrated, the displacement of the test piece 6 is greatest at both ends in the longitudinal direction. Then, the internal pressure of the sealed space 14 may fluctuate greatly due to the large displacement.

However, in this embodiment, the specimen 6
Since the cover body 10 corresponding to the both ends in the longitudinal direction where the displacement is the largest is the soft cover portion 13, the fluctuation of the internal pressure of the closed space 14 can be largely suppressed by the movement of the film material 20.

On the other hand, in the test under the storage environment, the test piece 6 on the shaking table 4 is moved to the test table 9, and is placed and fixed on the test table 9, and the cover 10 is attached to the test table 9. , And the inside thereof is made a closed space 14 in the same manner as described above.

By the way, in the case of the test in the transportation environment, the size of the shaking table 4 is restricted, and even if the specimen 6 is small, the sealed space 14 cannot be reduced. In the case of the test below, the enclosed space 14 can be reduced.

Therefore, in this embodiment, when the specimen 6 is large, such as a marine container, each soft cover portion 13 of the cover body 10 is extended as shown in FIG. The inside of the cover body 10 is made into a closed space 14 by using the inner groove 35d. On the other hand, when the specimen 6 is small like a railway container, as shown in FIG.
Is reduced, and the inside of the cover body 10 is made to be a closed space 14 using the groove 35e at the time of reduction shown in FIG.

Thus, the required minimum sealed space 14 corresponding to the size of the specimen 6 can be obtained, and the temperature and humidity in the sealed space 14 can be more stably adjusted. And even if the soft cover part 13 is reduced, the dispersing member 2
The windings 5, 26 are wound up by the winding drums 28, 29 in accordance therewith, so that the flow rates of the temperature control and the humidity control air can be made completely the same at various points in the cover body 10 as in the case of extension. .

In the above embodiment, the case where both the vibration table 4 and the test table 9 are provided on the floating base 3 has been described. However, the test table 9 may be provided on the main base 1.

[0046]

As described above, according to the present invention, since the vibrating table and the test table are provided adjacent to each other, the test under the transport environment can be carried out only by moving the test specimen between the two tables. The test can be performed in conjunction with the test below, and there is no problem that one specimen monopolizes the shaking table. Further, since the cover body forming the closed space is structured to move between the vibration table and the test table and to contain the test piece, it is not necessary to provide two test chambers, and the temperature and humidity adjustment means is not required. Is sufficient, and the equipment cost can be greatly reduced.

In the present invention, a door is provided at at least one end in the moving direction of the cover so as to carry in and out the specimen by relative movement between the specimen and the cover. The cover body can be moved while the specimen is set on the table.

The cover body comprises a hard wall portion at the center in the moving direction thereof; and a soft cover portion provided on both sides of the hard wall portion and made of an aggregate and a soft film material. By connecting the adjusting means through the hard wall portion, the weight of the cover body can be reduced, and the fluctuation of the internal pressure in the closed space due to the vibration of the test piece can be suppressed by the movement of the film material.

Further, by making the soft cover part expandable and contractible in the moving direction of the cover body, the size of the cover body can be adjusted according to the size of the specimen, and the temperature control and humidity control can be stably performed. Can be done.

Further, a dispersing member is provided at a position directly below the top surface of the cover to discharge temperature- and humidity-controlled air from the temperature / humidity adjusting means over the entire area of the cover and to discharge the air downward from a number of discharge holes. The opening area per unit area of the discharge hole
The temperature and humidity in the closed space can be more quickly uniformed by setting the humidity control air to be smaller as the distance from the supply portion to the cover body increases.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an environmental test apparatus according to one embodiment of the present invention.

FIG. 2 is a configuration diagram of the floating foundation viewed from above in FIG. 1;

FIG. 3 is a perspective view of a cover body.

FIG. 4 is a perspective view of the cover body viewed from a direction opposite to that of FIG. 3;

FIG. 5 is a sectional view when the cover body is extended.

FIG. 6 is a cross-sectional view when the cover body is reduced.

FIG. 7 is an explanatory diagram showing an arrangement pattern of ejection holes provided in a dispersion member.

FIG. 8 is an explanatory view showing a closed structure using a skirt.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Buffer mechanism 3 Floating foundation 4 Vibration table 6 Specimen 7 Vibration mechanism 8 Seal member 9 Test table 10 Cover body 11 Running rail 11a Detachable rail 12 Hard wall part 13 Soft cover part 14 Sealed space 15 Supply port 16 Discharge Outlet 18 Temperature / humidity adjusting device 19 Aggregate 20 Membrane material 21 Insulated door for specimen 23 Guide roller mechanism 24 Lock mechanism 25, 26 Dispersion member 28, 29 Winding drum 31 Ventilation duct 32 Discharge hole 33 Skirt 34 Antifreeze liquid 35 Seal groove 35a Longitudinal groove 35b Lateral groove 35c Inner groove for vibration table 35d Inner groove for test table 35e Reduced groove

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisayoshi Kondo 3-153-3 Haraki, Ichikawa-shi, Chiba 103 room (72) Inventor Koichi Kuwana 4-3-15-1505 Takenotsuka, Adachi-ku, Tokyo (56) References JP-A-59-72039 (JP, A) JP-A-58-115340 (JP, A) JP-A-2-138846 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name ) G01M 7/02 G01N 17/00

Claims (5)

(57) [Claims] 1. A shaking table on which a sample is placed and fixed; a test table adjacent to the shaking table for testing the sample in a stationary state; and moving between the shaking table and the test table. An environmental test apparatus comprising: a cover body enclosing a test specimen and having an enclosed space inside; and a temperature and humidity adjusting means for adjusting temperature and humidity in the enclosed space. 2. The apparatus according to claim 1, wherein the cover body has a door at at least one end in the moving direction for carrying the specimen in and out by relative movement between the specimen and the cover body. 2. The environmental test apparatus according to 1. 3. The cover body has a hard wall portion at the center in the moving direction thereof; and a soft cover portion provided on both sides of the hard wall portion and comprising an aggregate and a soft film material;
The temperature and humidity adjusting means is connected via the hard wall portion.
Environmental test equipment as described. 4. The environmental test apparatus according to claim 3, wherein the soft cover has a structure capable of expanding and contracting in a moving direction of the cover body. 5. The cover body includes a dispersing member at a position directly below the top surface, which disperses temperature- and humidity-conditioned air from the temperature / humidity adjusting means over the entire area of the cover body and discharges the air downward from a number of discharge holes. 5. The environment according to claim 1, wherein an opening area per unit area of the discharge hole is set smaller as the distance from a supply part of the temperature control and humidity control air to the cover body increases. Testing equipment.