KR100381130B1 - A turn style impact test device - Google Patents

Abstract

The present invention has the object to be able to derive the excellent experimental data by precisely controlling the degree of impact by allowing the test object 26 to freely drop the initial velocity generated by the free fall, the other purpose is to experiment It is to make it easier to adjust the amount of impact to be delivered to the object (26).

The present invention for realizing this, the hammer 10, the operating portion 12 is provided on the hammer 10 is provided to provide a lifting force, and one end is located in the hammer 10 drop position An arm (2) to be installed, a fixed shaft (4) which is coupled to an intermediate portion of the arm (2) to form a center of rotation, a fixed block (28) installed at the other end of the arm (2), and the fixed block ( 28 is provided with a rotary impact device composed of a clamp member 34 to be fixed to the test object (26).

Description

Rotary impact test device {A turn style impact test device}

The present invention relates to a rotary impact test apparatus, and in particular, it is possible to eliminate the initial velocity generated when the test object falls free, to obtain a more accurate input acceleration value to ensure excellent data, and The present invention relates to an impact test apparatus that can easily adjust the amount of impact to be delivered to a test object according to a situation.

In general, the impact test device is to test the strength that should be normally provided without being damaged when subjected to everyday external shocks, such as parts used in home appliances or other various types of devices used in everyday.

Such a shock test can easily damage the consumer when the product falls or is damaged, and at the same time, it is exposed to various safety accidents that may occur when the consumer uses the product.

Therefore, it is one of the key to secure more accurate data by more precisely impact tests on various products.

Referring to the prior art in Figure 3, a plurality of columns 102 are installed vertically, two pulleys 134 are respectively installed on the top of the column 102, the rail 104 inside the column 102 is a length It is installed along the direction.

The slider mass 106 sliding upward and downward is installed on the rail 104 while the pulley 108 is coupled to the upper portion. The upper portion of the frame 110 is coupled to the lower portion of the slider mass 106. 110, the carriage 116 for installing the test object 114 is installed at the lower end.

In addition, the carriage 116 is provided with an accelerometer 118 for measuring an input acceleration value transmitted during a collision, and also measures the output acceleration value reached through the carriage 116 in the test object 114. Accelerometer 120 is installed, and each of the accelerometers 118 and 120 is connected to an analyzer 122 for collecting and analyzing signals located at the bottom of the column 102.

Subsequently, an upper block 124 is installed at a lower end of the carriage 116, and a pad 126 for adjusting an impact amount is attached to a lower end of the upper block 124, and the upper block (inside the lower end of the column 102) is mounted. The lower block 128 is installed to face the 124, and a pad 130 for adjusting the impact amount is attached to the upper end of the lower block 128.

Meanwhile, a part of the rope 132 for moving the carriage 116 up and down is wound around the pulley 108 installed on the slider mass 106 and the pulley 134 installed on the top of the column 102. At one end, a motor 136 for providing power is installed under the column 102 while winding a part of the rope 132, and a control unit 138 for transmitting a command is connected to the motor 136. do.

Referring to the operation of the prior art configured as described above is as follows.

First, the test object 114 to which the accelerometer 120 is attached is placed on the top of the carriage 116, and the control unit 138 is adjusted to operate the motor 136 to pull the rope 132. As the rope 132 moves along the pulleys 108 and 134, the slider mass 106 moves along the rails 104 and the frame 110 and the carriage 116 together.

After raising the carriage 116 to a predetermined height as described above, if the control unit 138 is adjusted so that the motor 136 is operated again as opposed to the above, the rope 132 partially wound around the motor 136 As the slider mass 106 and the frame 110, the carriage 116, the experimental object 114, and the like are simultaneously lowered.

When the carriage 116 is lowered as described above, the pad 126 of the upper block 124 and the pad 130 of the lower block 128 collide with each other to transmit an impact to the upper block 124 and at the same time the impact. Continues to move toward the carriage 116 side.

At this time, the accelerometer 118 checks the input acceleration value reaching the carriage 116 and transmits it to the analyzer 122. Based on this value, the operator judges whether the drop impact test is performed in the standard state. Determine whether the experiment.

Subsequently, the impact reaches the test object 114 through the carriage 116, and the accelerometer 120 installed in the test object 114 checks the output acceleration value and transmits the result to the analyzer 122. The information transmitted as described above is simply referred to by the operator, and the operator observes the degree of breakage of the test object 114 caused by the impact and determines the quality.

The prior art has a problem in that the input acceleration value can not be precisely controlled during the experiment by having a structure in which the initial velocity generated because the test object falls freely can not be erased.

Another problem is that the complicated structure makes it easier to control the amount of impact to be delivered to the test object.

The present invention has an object to be able to eliminate the initial velocity generated by the free fall of the test object, to precisely control the degree of impact to derive excellent experimental data.

Another purpose is to make it easier to control the amount of impact to be delivered to the test object.

The present invention for realizing this, the hammer, the operating unit is installed on the upper portion of the hammer to provide a lifting force, the arm is provided with one end is located in the hammer drop position, the center of rotation while being coupled to the middle of the arm And a clamping member installed on the other end of the arm, and a clamping member installed on the fixed block to fix the test object. The operating part includes a rope having a front end fixed to the hammer, and a middle part of the rope. And a pulley installed at the upper part of the guide while winding a part, a motor installed at the lower end of the guide while winding a part of the rope, and a control part connected to the motor, A tip is installed, and at one end of the arm, a guide is installed vertically while positioning the hammer therein. The arm is provided at one end with each of the other end is the lower stopper and the supporter, and characterized in that each accelerometer is mounted to the mounting block and the experimental object.

1 is a state diagram schematically showing an embodiment of the present invention.

Figure 2 is a perspective view showing the structure of the test object mounted on the fixed block constituting the present invention.

3 is a front view showing a conventional embodiment.

<Explanation of symbols for the main parts of the drawings>

2: arm 4: fixed shaft 6: tip

8: Guide 10: Hammer 12: Actuator

14: Rope 16: Pulley 18: Motor

20: control unit 22: stopper 24: supporter

26: test object 28: fixed block 30: screwdriver

32, 40: Accelerometer 34: Clamp member 36: Bolt

38: Bend 42: Amplifier 44: Analyzer

In the present invention, as shown in Figure 1 is configured to rotate the arm (2) by the impact provided from the outside, the center of the arm (2) is coupled to a fixed shaft (4) forming a center of rotation, the arm ( 2) One side end is coupled to the tip (6) that receives the shock directly.

At this time, by adjusting the length of the arm (2) or by selecting any one of the tip 6 material rubber, urethane, plastic, lead can be adjusted the impact transmission degree by adjusting the height of the hammer (10).

And at one end of the arm (2), a guide (8) made of tubular shape is installed vertically while positioning the lower end, and a hammer (10) for impacting the tip (6) is installed inside the guide (8), An operating part 12 providing an action force is located at the upper end of the hammer 10, wherein the impact amount of the hammer 10 can be adjusted by adjusting the height of the guide 8.

The operation unit 12 is a rope 14 which is connected to the upper end of the hammer 10 and fixed to the rope 14 to transmit an action force, and a plurality of pulleys rotatably installed while winding a portion in the middle of the rope 14 ( 16, a motor 18 providing a force while winding a portion of the rear end of the rope 14, and a control unit 20 connected to the motor 18 to transmit an operation command.

Meanwhile, a stopper 22 defining a range of rotation is provided at one end of the arm 2, and a supporter 24 serving as a support is provided at the other end of the arm 2, and the other end of the arm 2 is provided. There is a fixed block 28 is installed to position the test object 26.

As shown in FIG. 2, a plurality of threaded holes 30 penetrated as shown in FIG. 2 are formed at equal intervals, and an accelerometer 32 is installed in any one of the screw holes 30. At this time, the accelerometer 32 is installed to check the input acceleration transmitted to the test object 26, and is also commonly used to execute the test standard for the product impact strength.

Subsequently, a clamp member 34 is installed on the fixing block 28 to fix the test object 26. The clamp member 34 is separated by the bolt 36 fastened to the screw hole 30. It consists of a bend 38 made possible. In addition, on the test object 26, an accelerometer 40 is installed to check the acceleration value that rises with the fixed block 28 when the arm 2 rotates.

An amplifier 42 and an analyzer 44 are sequentially connected to each of the accelerometers 32 and 40. At this time, the analyzer 44 checks whether the input acceleration value on the fixed block 28 matches the test standard. It is a device to check if the input acceleration value is within the allowable range of the target product acceleration value.

In order to adjust the input acceleration value reaching the fixed block 28 to the test standard, it is possible by adjusting the drop height of the tip 6 material or the hammer 10.

Referring to the operation of the present invention configured as described above are as follows.

First, the operator selects the material of the tip 6 so that the input acceleration of the fixed block 28 matches the test standard, and operates the control unit 20 to adjust the height of the hammer 10 by operating the motor 18. do.

When the height adjustment operation is completed as described above, the control unit 20 (see FIG. 1) is adjusted again to release the rope 14 by operating the motor 18. As a result, the rope 14 is pulled ( Moving along 16) causes the hammer 10 to descend along the guide 8.

When the hammer 10 falls while maintaining a constant acceleration and collides with the tip 6, the arm 2 is rotated about the fixed shaft 4. At this time, the one end of the arm (2) rotates and stops by reaching the stopper (22), and the rotation stops. At the same time, the other end of the arm (2) is spaced apart from the supporter (24). Ascend with 26.

The rotating range of the arm 2 as described above is a range in which the angle at which one end of the arm 2 reaches the stopper 22 and the angle at which the other end of the arm 2 is separated from the supporter 24 are the same. Rotate within.

As described above, when the test object 26 rises, the accelerometer 40 checks the current rising acceleration value and transmits the information to the analyzer 44 through the amplifier 42. In this case, the analyzer 44 has a fixed block ( The information is received from the accelerometer 32 installed in 28), and the displayed standard acceleration value and the current acceleration value transmitted from the accelerometer 40 installed in the test object 26 are analyzed and displayed.

Based on the information transmitted as described above, the analyzer 44 displays a retest when the acceleration value of the test object 26 is out of the standard acceleration value, and the acceleration value and the standard acceleration of the test object 26 are displayed. If the values match, the test completion is indicated. At this time, whether the experiment is completed, the analyzer 44 may be displayed by an LCD or a lamp, not shown.

On the other hand, the impact transmitted from the hammer 10 passes through the fixed block 28 through the arm 2 to reach the test object 26, which causes the test object 26 to have a weak strength in the product. Cracks or deformations occur in poorly assembled parts.

Therefore, the operator observes the deformation state of the test object 26 to determine whether the product is defective.

The present invention has a structure that can eliminate the initial velocity generated by the free fall of the test object, it is possible to precisely control the degree of impact has the effect of deriving excellent experimental data.

Another effect is that the hammer and the test object are separated from each other, so that the amount of impact to be transmitted to the test object can be more easily controlled.

Claims (7)

delete Hammer (10), An operating part 12 installed on the hammer 10 to provide an action force to lift and lower, An arm 2 installed at one end in a falling position of the hammer 10, A fixed shaft 4 which is coupled to the middle of the arm and forms a rotation center, A fixed block 28 installed at the other end of the arm 2, and Installed on the fixing block 28 includes a clamp member 34 to fix the test object 26, The operating part 12 is a rope 14 having a tip end fixed to the hammer 10, and a pulley 16 disposed above the guide 8 while winding a part of the rope 14 in the middle part of the rope 14. And a motor 18 installed at the rear end of the rope 14 and installed at an outer lower portion of the guide 8, and a control unit 20 connected to the motor 18. A tip 6 is installed at one end of the arm 2, A guide 8 is vertically installed at one end of the arm 2 while positioning the hammer 10 therein. A stopper 22 and a supporter 24 are respectively provided at one end of the arm 2 and the lower end of the other end, Rotary impact test apparatus, characterized in that the accelerometer (32, 40) is installed on the fixed block 28 and the test object (26), respectively. The method of claim 2, The clamp member (34) is a rotary impact test device, characterized in that consisting of a bend (38) which is fastened to the fixing block 28 to be detachably installed in the bolt (36). delete delete delete The method of claim 2 or 3, Rotary accelerometer, characterized in that the amplifier (42) and the analyzer (44) are sequentially connected to the accelerometer (32, 40).