JPH0535313Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is a strength testing machine for package handles that easily tests the strength of handles for transporting packages such as household electrical equipment, office equipment, miscellaneous goods, etc. Regarding.

<Prior Art> Conventionally, to test the strength of this type of handle, a strength testing machine as shown in FIG. 2 has been used. In the figure, a package 50 is fixed on a base 10 by two plates 11 via bolts and nuts 12, and the handle 51 of the package 50 is hooked in the direction of the arrow shown in the figure. Stretch it. The strength at which the handle 51 is damaged or the strength at which the packaging material such as cardboard of the package 50 is torn and the handle 51 comes off is tested.

<Problems to be Solved by the Invention> However, the conventional testing machine measures the load until the handle 51 breaks and changes in the elongation of the handle 51 or the packaging material. In other words, it is a static tensile strength measurement, and when the package 50 is actually handled, it is different from the static state. That is, the handle 51 is subjected to dynamic shocks repeatedly or periodically or irregularly.
Therefore, the method of measuring strength using the tensile tester is unrealistic and far from the actual cargo handling conditions.

In addition, tensile testing machines are generally not installed at production sites, which causes the inconvenience of not being able to easily conduct strength tests at production sites. The present invention was devised in view of the above points, and aims to provide a strength test for package handles that can be easily performed in accordance with reality.

<Means for solving the problem> The present invention consists of two pillars erected on a base, a beam suspended horizontally at the upper ends of both pillars, and a beam suspended vertically in the center of the beams so that it can move up and down without friction. The package is provided with a base plate that is movable only by a predetermined stroke in the direction, and a hook on the lower end of the base plate for hooking the package onto the handle.

<Function> Hook the bottom end of the board onto the handle of the package,
After lifting the board, release it instantly. Then, the package falls down a predetermined stroke and stops at the lower end of the stroke. At this time, a dynamic impact is applied to the handle of the package. Repeat the above operation as many times as necessary.

<Example> An example of the present invention will be described below with reference to the drawings. Note that components having the same configuration as the conventional one are indicated by the same reference numerals.

FIG. 1 is a perspective view of a package handle strength tester according to the present invention (hereinafter referred to as the present tester). In the figure, 20 is two pillars erected on the base 10, 30 is a beam suspended horizontally on the upper ends of both pillars 20, 20, and 40 is a board suspended vertically at the center of the beam 30. be.

The substrate 40 is formed of a plate-shaped body, and is provided with a rectangular opening 41 whose longitudinal direction is the vertical direction, and the beam 30 is inserted through the opening 41.

Further, the beam 30 is provided with guides 31 for regulating the front and back surfaces of both sides of the opening 41 of the substrate 40. Linear bearings (not shown) are disposed between a and b between each guide 31 and the front and back surfaces of the substrate 40 to eliminate friction when the substrate 40 moves in the vertical direction. , the board 40 is configured to prevent it from swinging left and right.
The substrate 40 also has a hook 42 at its lower end for hooking a handle 51 provided on the package 50, and a handle 43 at its upper end for lifting the substrate 40.

Furthermore, a long adjustment screw 44 is screwed onto the bottom wall of the opening 41 of the board 40, and by adjusting the height of the head of the adjustment screw 44, the stroke between the top and bottom of the board 40 can be adjusted. It's summery. The height of the pillar 20 is determined so that the package 50 does not land on the base 10 at the lowest position of the stroke.

Next, the operation of the proposed test machine will be explained.

The handle 51 provided on the package 50 is attached to the substrate 40.
hook 42, and lift the substrate 40, that is, the package 50, from the base 10 by a predetermined stroke by holding the handle 43 (in the direction of the upward arrow in the figure).

Next, let go of the handle 43 instantly. Then,
The substrate 40, that is, the package 50 is connected to the guides 31, 3
1 (in the downward direction of the illustrated arrow) and stops at the lowest end of the stroke, that is, at the position where the upper wall of the beam 30 and the upper wall of the opening 41 come into contact.
At this time, a dynamic impact is applied to the handle 51 of the package 50. Since there is no friction between the board 40 and the guide 31 when the board 40 is dropped, there is no error in the test results.

Repeat the above operation a predetermined number of times.

The strength of the impact can be changed by changing the stroke using the adjusting screw 44. Although it has been explained that the substrate 40 is lifted manually in the testing machine of the present invention, it may be automatically repeated by mechanical means. Further, the mechanism for dropping the substrate 40 without friction is not limited to the embodiment, and may be any mechanism that performs the same operation.

<Effects of the invention> When using the testing machine of this invention, it is configured so that the test is carried out by hooking the handle of the package onto a board that moves up and down a predetermined stroke without friction. In addition to being able to apply shock, it is also possible to test and measure the strength of package handles at production sites.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a package handle strength testing machine according to the present invention, and FIG. 2 is a partial perspective view of a conventional testing machine. 20...Column, 30...Beam, 31...Guide, 4
0...Substrate, 41...Opening, 42...Hook,
43...Handle, 44...Adjustment screw, 50...Package, 51...Handle.

Claims (1)

[Scope of utility model registration request] It is equipped with two pillars erected on a base, a beam suspended horizontally at the upper ends of both pillars, and a board that is vertically installed in the center of the beam and can move only a predetermined stroke in the vertical direction without friction. A strength testing machine for a handle of a package, characterized in that the lower end of the substrate is provided with a hook for hooking the handle of the package.