KR20170074449A - Automatic impact ball drop testing apparatus - Google Patents

Automatic impact ball drop testing apparatus Download PDF

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Publication number
KR20170074449A
KR20170074449A KR1020150183735A KR20150183735A KR20170074449A KR 20170074449 A KR20170074449 A KR 20170074449A KR 1020150183735 A KR1020150183735 A KR 1020150183735A KR 20150183735 A KR20150183735 A KR 20150183735A KR 20170074449 A KR20170074449 A KR 20170074449A
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South Korea
Prior art keywords
impact ball
clamping unit
coupled
impact
lower clamping
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KR1020150183735A
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Korean (ko)
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KR101833019B1 (en
Inventor
이용봉
정성수
전병수
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한국표준과학연구원
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Priority to KR1020150183735A priority Critical patent/KR101833019B1/en
Publication of KR20170074449A publication Critical patent/KR20170074449A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/08—Shock-testing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/44—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for conveying or interconverting oscillating or reciprocating motions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/02—Rulers with scales or marks for direct reading
    • G01B3/04—Rulers with scales or marks for direct reading rigid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02—Generating seismic energy
    • G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
    • G01V1/147—Generating seismic energy using mechanical driving means, e.g. motor driven shaft using impact of dropping masses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The present invention relates to an automatic impact ball drop test apparatus and a control method therefor, the automatic impact ball drop test apparatus comprising: A vertical frame extending upward from the base; An upper clamping unit coupled to the vertical frame and configured to be movable and fixed in a vertical direction and capable of supporting and dropping the impact ball; A lower clamping unit disposed below the upper clamping unit and coupled to the vertical frame so as to be movable and fixed in a vertical direction and capable of passing and supporting the impact ball; And a controller coupled to the upper clamping unit and the lower clamping unit to control operations of the upper clamping unit and the lower clamping unit. The present invention relates to an automatic impact ball drop test apparatus capable of freely dropping an impact ball at an accurate height for measuring a floor impact sound of a dwelling house or the like and capable of automatically performing repetitive free fall test of an impact ball and a control method thereof will be.

Description

Technical Field [0001] The present invention relates to an automatic impact ball drop testing apparatus,

The present invention relates to an impact ball falling test apparatus and a control method thereof, and it is possible to perform a floor impact sound test such as a joint house by allowing the impact ball to collide with the floor by falling down freely, The present invention relates to an automatic impact drop test apparatus and a control method thereof.

Recently, the stratification between neighboring houses, strong incidents and accidents are continuing due to the interlayer noise in the apartment such as apartment, and the problem about the floor noise (floor impact sound) is being reexamined.

In Korea, the floor impact sound regulation standard is defined in the standard for recognition and management of the floor impact sound insulation structure of the common house, and the KS standard is provided for the measurement and evaluation of floor impact sound. According to the recently revised KS standard, the rubber ball is used as a standard weight impact source, and the rubber ball is dropped from a specific height to measure the level of the impact sound generated upon impact on the floor.

At this time, the rubber ball has a specific structure and weight specified in the KS standard, and the standard is specified so that the rubber ball is dropped at a specific height to impact the floor. More specifically, a hollow rubber ball having an empty space of about 2.5 kg is dropped from a height of 1 m to test an impact force characteristic specified by the KS standard.

However, the KS standard does not specify a device that allows free fall of the rubber ball from a specific height, and there is no separate device for free fall of the rubber ball so that a person can freely drop the rubber ball to perform the test using the rubber ball. The rubber ball can not be freely dropped from an accurate height, and thus the reliability of the floor impact sound measurement is deteriorated.

Thus, there is a need for a device that allows free fall of the rubber ball from the correct height for floor impact sound measurement.

In order to improve the reliability of the floor impact sound measurement, there is a case where the floor impact sound is measured by dropping the rubber ball several times freely. In this case, the person repeatedly hands the rubber ball to drop freely, The test is cumbersome and the accuracy is low. Therefore, it is necessary to develop a device capable of automatically repeating the free fall test of the rubber ball.

A prior art related to this is disclosed in Korean Patent No. 10-0930068 entitled " Pneumatic pressure input device of tire type weight impact source for measuring floor impact sound blocking performance ".

KR 10-0930068 B1 (2009.11.27.)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a shock absorber capable of freely dropping an impact ball at an accurate height for measuring a floor impact sound, An automatic impact ball drop test apparatus and a control method thereof.

In order to accomplish the above object, the automatic impact ball drop test apparatus of the present invention comprises: a base having an opening portion penetrating up and down; A vertical frame extending upward from the base; An upper clamping unit coupled to the vertical frame and configured to be movable and fixed in a vertical direction and capable of supporting and dropping the impact ball; A lower clamping unit disposed below the upper clamping unit and coupled to the vertical frame so as to be movable and fixed in a vertical direction and capable of passing and supporting the impact ball; And a controller coupled to the upper clamping unit and the lower clamping unit to control operations of the upper clamping unit and the lower clamping unit. And a control unit.

The upper clamping portion is coupled to both sides of the vertical frame in the width direction by an LM bearing, an upper clamping plate is coupled to the upper side of the vertical frame, one side of the upper clamping plate is rotatably coupled to the upper clamping plate, And a height adjustment handle is coupled to an upper end of the first screw.

The lower clamping part is coupled to both sides of the vertical frame in the width direction by an LM bearing, an upper fixing plate is coupled to the upper side of the vertical frame, a lower fixing plate is coupled to the upper side of the vertical frame, And the second screw is screwed to the lower clamping part, so that the lower end of the second screw is connected to the servo motor.

The upper clamping portion and the lower clamping portion may include a support plate coupled to the vertical frame and having through holes vertically penetrating therethrough; A plurality of grippers coupled at one side to the support plate along the circumferential direction of the through hole, the gripper being coupled to be rotatable and movable in the longitudinal direction; A rotation ring rotatably coupled to the through hole of the support plate, the other side of the gripper being coupled to the rotation shaft; And an actuator having one end coupled to the support plate and the other end coupled to the rotation ring, the rotation ring being formed so as to rotate forward and reverse; And a control unit.

Further, the end of the grippers, to which the impact ball of the upper clamping unit is supported, is coupled with a rotating roller.

In addition, a vertical portion may be formed on the upper end of the end portion of the gripper where the impact ball of the lower clamping portion is supported.

In addition, a ruler is coupled to the vertical frame in the vertical direction, and an indicator is formed on the upper clamping unit to indicate the scale of the ruler. The ruler is coupled to the vertical frame so as to be movable and fixed in the vertical direction And a slot is formed in the base so that a ruler passes through the slot.

Further, the base is provided with a leveling device and a height adjusting screw.

In addition, an impact ball detection sensor is installed in the lower clamping unit.

A method of controlling the automatic impact ball drop test apparatus according to the present invention comprises: (S10) supporting an impact ball on the upper clamping unit; The upper clamping portion being operated to drop the impact ball (S20); (S30) so that when the dropped impact ball bounces after impact on the floor, the lower clamping unit is activated to support the impact ball on the lower clamping unit; (S40) the lower clamping unit is lowered after the lower clamping unit is raised so that the impact ball is transferred to the upper clamping unit; And a control unit.

In step S30, the lowering of the impact ball is sensed through an impact ball detection sensor installed at a predetermined height, and the lower clamping unit is actuated after a predetermined time elapses to support the impact ball that has protruded after the floor impact .

In addition, if it is detected in S30 that the impact ball dropped through the impact ball detection sensor installed on the lower clamping unit is lowered and then the impact ball protruded after the floor impact is sensed, the lower clamping unit is operated, And is supported by the clamping portion.

Between S10 and S20, if the automatic impact ball drop test apparatus is operated after inputting the number of drops to the control section, steps S20 to S40 are repeatedly performed according to the number of dropped drops while calculating the number of drops automatically .

The automatic impact ball drop test apparatus and the control method thereof according to the present invention can accurately measure the floor impact sound blocking performance of the apartment house because the impact ball can fall freely at an accurate height for measuring the floor impact sound, There are advantages to be able to.

In addition, since the impact ball bounces after the impact on the floor can be supported by the lower clamping part so as not to cause a shock to the floor again, unnecessary floor impact sound can be prevented from being generated, and accurate floor impact sound can be measured.

In addition, since the impact ball supported by the lower clamping portion can be automatically moved to the upper clamping portion on the upper side, the impact ball can be automatically retracted and the free fall test of the impact ball can be automatically performed.

1 and 2 are a perspective view and a rear view of an automatic impact ball drop test apparatus according to the present invention.
FIG. 3 and FIG. 4 are top plan views showing the structure and operation state of the upper clamping unit and the lower clamping unit according to the present invention. FIG.
FIG. 5 is a side view showing a state in which the impact ball according to the present invention is transferred from the lower clamping portion to the upper clamping portion. FIG.
6 is a perspective view showing a state in which the impact ball is placed on the upper clamping part before the drop test of the impact ball according to the present invention.
7 is a perspective view showing a state in which the impact ball of the impact ball according to the present invention is started and the impact ball is dropped from the upper clamping portion.
8 is a perspective view showing a state in which the impact ball according to the present invention drops and impacts on the floor after being impacted.
FIG. 9 is a perspective view showing a state in which the impact ball according to the present invention is lowered from the raised state and supported by the lower clamping unit. FIG.
10 is a perspective view showing a state in which the impact ball is moved from the lower clamping portion to the upper clamping portion after the drop test of the impact ball according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an automatic impact ball drop test apparatus and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

<Configuration of Drop Test Apparatus>

1 and 2 are a perspective view and a rear view of an automatic impact ball drop test apparatus according to the present invention. FIGS. 3 and 4 are top plan views showing the structure and operating state of the upper clamping unit and the lower clamping unit, respectively, FIG. 5 is a side view showing a state in which the impact ball according to the present invention is transferred from the lower clamping unit to the upper clamping unit, FIG. 6 is a perspective view showing the state that the impact ball is placed on the upper clamping unit before the drop test of the impact ball according to the present invention, to be.

As shown in the drawings, the automatic impact ball drop testing apparatus 1000 of the present invention includes: a base 100 having an opening 110 penetrating vertically; A vertical frame 200 extending upward from the base 100; An upper clamping part 300 coupled to the vertical frame 200 to be movable and fixed in the vertical direction and capable of supporting and dropping the impact ball; A lower clamping part 300 disposed below the upper clamping part 300 and coupled to the vertical frame 200 so as to be movable and fixed in the vertical direction and capable of passing and supporting the impact ball, 400); A control unit 500 connected to the upper clamping unit 300 and the lower clamping unit 400 to control operations of the upper clamping unit 300 and the lower clamping unit 400; . &Lt; / RTI &gt;

First, the base 100 is a part that rests on the bottom surface and supports the entire device. The base 100 has an opening 110 passing through the upper and lower sides of the base 100. The opening 110 is formed so that the diameter of the opening 110 is smaller than the diameter of the impact ball Can be formed larger.

The vertical frame 200 may be formed on the other side of the base 100 and the vertical frame 200 may extend vertically on the upper side of the base 100. At this time, the vertical frame 200 is firmly fixed to the base 100, and may be formed in various structures to have sufficient structural rigidity.

The upper clamping part 300 is coupled to the vertical frame 200 at one side and the upper clamping part 300 can be moved up and down along the vertical frame 200 so that the height can be adjusted, So that it can be fixed at a specific height. The upper clamping part 300 can support the impact ball to be dropped on the other side, and is formed so that the impact ball can be freely dropped. At this time, the upper clamping unit 300 may be formed to drop the impact ball automatically when an operation signal is input.

The lower clamping unit 400 is disposed below the upper clamping unit 400 and the lower clamping unit 400 is vertically moved along the vertical frame 200 to be fixed in height. The lower clamping part 400 may be formed so as to allow the impact ball dropped by the upper clamping part 300 to pass therethrough, and may support the impact ball that is protruded after impact on the floor. That is, by using the lower clamping unit 400, it is possible to prevent the impact ball, which has been bounced after impact on the floor, from causing the impact to the floor again.

The control unit 500 is connected to the upper clamping unit 300 and the lower clamping unit 400 and the operation of the upper clamping unit 300 and the lower clamping unit 400 is controlled by the control unit 500, The test can be performed automatically. At this time, in a state in which the impact ball is supported on the upper clamping unit 300, the upper clamping unit 300 is operated by the control unit 500 to allow the impact ball to fall freely, Can be supported by the lower clamping part 400 operated by the control part 500 so that the impact ball can perform the test so as to measure the noise which is impacted once on the floor. The upper clamping part 300 is moved up to the lower side of the upper clamping part 300 while the impact ball is supported on the lower clamping part 400 and then moved to the upper clamping part 300 to support the impact ball. And the operation of the lower clamping unit 400 can be controlled.

Thus, the impact ball for drop test as a standard weight impact is supported on the upper clamping unit 300, and then the impact ball can be freely dropped down vertically by pressing the operation button. After the impact ball is freely dropped, It is possible to prevent an unnecessary impact sound from being generated due to the shock, and the impact ball can be automatically supported by the upper clamping unit 300 again.

Accordingly, the automatic impact ball drop test apparatus of the present invention can drop the impact ball at an accurate height for measuring the floor impact sound, and can accurately measure the floor impact sound, so that the floor impact sound blocking performance of the apartment house can be accurately measured There are advantages. In addition, since the impact ball bounces after the impact on the floor can be supported by the lower clamping part so as not to cause a shock to the floor again, unnecessary floor impact sound can be prevented from being generated, and accurate floor impact sound can be measured. In addition, since the impact ball supported by the lower clamping portion can be automatically moved to the upper clamping portion on the upper side, the impact ball can be automatically retracted and the free fall test of the impact ball can be automatically performed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, detailed embodiments of an automatic impact ball drop test apparatus according to the present invention will be described.

The upper clamping unit 300 is coupled to both sides of the vertical frame 200 in the width direction by an LM bearing 290. An upper fixing plate 230 is coupled to the upper side of the vertical frame 200, The first screw 250 is coupled to the upper clamping part 300 so that the other end of the first screw 250 is coupled to the upper clamping part 300. The height adjusting handle 251 is coupled to the upper end of the first screw 250 have.

This allows the height of the upper clamping part 300 to be adjusted. 3 and 4, the upper clamping unit 300 is coupled to the vertical frame 200 by the LM bearing 290, and is formed to be able to move up and down smoothly and precisely. The width of the vertical frame 200 And the LM block is fixed to the upper clamping part 300. The LM rail and the LM block can be coupled to each other and moved up and down. A first screw 250 is coupled to the upper fixing plate 230 so as to be rotatable on one side of the upper fixing plate 230 and to be screwed on the other side of the upper clamping unit 300, And a height adjusting handle 251 is coupled to the upper end of the first screw 250 so that the height of the upper clamping portion 300 can be adjusted by turning the height adjusting handle 251. At this time, since the first screw 250 is screwed to the upper clamping part 300, the height of the upper clamping part 300 can be adjusted after the height thereof is adjusted.

Thus, the height of the upper clamping portion can be adjusted by the operator to the height to be tested using the height adjusting handle, thereby fixing the height.

The lower clamping unit 400 is coupled to both sides of the vertical frame 200 in the width direction by an LM bearing 290. An upper fixing plate 230 is coupled to the upper side of the vertical frame 200, And a second screw 260 is screwed to the lower clamping part 400 so that the second clamping part 400 is coupled to the second clamping part 400. The second clamping part 400 is coupled to the upper clamping plate 230 and the lower clamping plate 240, The lower end of the screw 260 can be connected to the servo motor 280.

This is a configuration in which the lower clamping part 300 is vertically moved by the rotation of the servo motor 280 so that the height can be automatically adjusted. The lower clamping unit 300 is coupled to the vertical frame 200 by the LM bearing 290 so that the lower clamping unit 300 can move accurately and smoothly up and down. The rail is fixed and the LM block is fixed to the lower clamping part 400 so that the LM rail and the LM block can be combined and moved up and down. An upper fixing plate 230 is coupled to the upper side of the vertical frame 200 and a lower fixing plate 240 is coupled to a lower side of the vertical frame 200. Both sides of the upper fixing plate 230 and the lower fixing plate 240 are rotatable The second screw 260 is engaged with the lower clamping part 400, In addition, the second screw 260 may be coupled to the timing pulley at the lower end thereof and connected to the servo motor 280 by the timing belt 270 to be rotated. Here, the servo motor 280 is connected to the control unit 500, and the movement and height of the lower clamping unit 400 can be controlled to a preset height.

The upper clamping part 300 and the lower clamping part 400 may include support plates 310 and 410 coupled to the vertical frame 200 and having through holes 311 and 411 penetrating vertically. A plurality of grippers 320 and 420 coupled to one side of the support plates 310 and 410 along the circumferential direction of the through holes 311 and 411 so as to be rotatable and movable in the longitudinal direction; Rotation rings (330, 430) rotatably coupled to the through holes (311, 411) of the support plates (310, 410) and the other side of the grippers (320, 420) And actuators (340, 440) coupled at one side to the support plates (310, 410) and coupled to the rotatable rings (330, 430) at the other side so that the rotatable rings (330, 430) are rotatable in normal and reverse directions; . &Lt; / RTI &gt;

That is, the upper clamping part 300 and the lower clamping part 400 may be formed in the same structure. Hereinafter, the upper clamping part 300 will be described.

The upper clamping unit 300 may include a support plate 310 having a through hole 311, a plurality of grippers 320, a rotation ring 330 and an actuator 340, And a through hole 311 formed in a plate shape and passing through the upper and lower portions is formed. A donut-shaped rotation ring 330 is coupled to the support plate 310 to correspond to the through-hole 311, so that the rotation ring 330 can rotate. The gripper 320 is coupled to the support plate 310 by a rotation axis so that the gripper 320 is formed with a guide slot 321 in the longitudinal direction and passes through the guide slot 321. [ do. Thus, the grippers 320 are rotatable and are coupled to the support plate 310 to be movable in the longitudinal direction. Further, the other side of the grippers 320 is coupled to the rotating ring 330 with a rotation axis. Here, the actuator 340 is coupled to the support plate 310 and the other end is coupled to the rotation ring 330, so that the rotation ring 330 can be rotated forward or backward according to the operation of the actuator 340 . 3, when the actuator 340 is formed by a cylinder, when the rod of the cylinder advances, the rotary ring 330 rotates in the counterclockwise direction, and the grippers 320 are radially outwardly opened. As shown in FIG. 4, When the rod is retracted, the rotary ring 330 may be rotated clockwise so that the grippers 320 are pulled radially inwardly.

Accordingly, the plurality of grippers 320 can be operated at the same displacement at a time by using the single actuator 340, and the impact ball can be stably supported by using the plurality of grippers 320, Free fall.

Further, a rotating roller 322 may be coupled to an end portion of the grippers 320 where the impact ball of the upper clamping unit 300 is supported.

This is because the grippers 320 are moved in a radially tilted direction without being moved equally in the radial direction when the grippers 320 are operated to expand radially outward for the drop of the impact ball, Since the impact ball supported at the end of the grippers 320 can be rotated while being rotated, the rotation roller 322 is provided at the end of the gripper 320 so that the rotation roller 322 is rotated, It is possible to prevent the impact ball from being rotated on the basis of the center, thereby allowing the impact ball to freely fall vertically.

The vertical part 422 may be formed on the upper end of the gripper 420 where the impact ball of the lower clamping part 400 is supported.

This is because when the impact ball is freely dropped and impact balls protruded after impact are supported by the lower clamping unit 400, impacts on the upper part of the vertical part 422 extending vertically upward at the ends of the grippers 420 The impact ball is accurately moved to the height of the grippers 320 of the upper clamping unit 300 when the lower clamping unit 400 is raised to a position directly below the upper clamping unit 300 as shown in FIG. .

The grippers 320 of the upper clamping unit 300 and the grippers 420 of the lower clamping unit 400 are formed at different angles with respect to the vertical center of the grippers 320 and 420, When the impact ball is transferred to the upper clamping unit 300 while the impact ball is supported on the lower clamping unit 400 and the impact ball is moved to the gripping unit 320 of the upper clamping unit 300, It is possible to prevent the vertical portion 422 formed at the end portion of the grippers 420 of the first and second grippers 420 from generating collision and interference.

A ruler 210 is coupled to the vertical frame 200 in the vertical direction and an indicator 350 is formed on the upper clamping part 300 to indicate a scale of the ruler 210, The base 210 may be coupled to the vertical frame 200 so as to be movable and fixed in the up and down direction and a slot 140 may be formed in the base 100 to allow the scale 210 to pass therethrough.

A ruler 210 is formed on one surface of the vertical frame 200 so that the upper clamping part 300 can be adjusted to a correct height by adjusting the height of the upper clamping part 300, An instruction unit 350 such as a shape can be formed. The scale 210 is formed so that a fixed slot 211 is formed in the ruler 210 so as to be moved and fixed in the vertical direction and fixed to the vertical frame 200 by the fixed handle 220, The slot 140 may be formed to allow the scale 210 to pass through. The height of the ruler 210 is adjusted and adjusted so that the lower end of the scale 210 touches the bottom surface to be tested and then the height of the upper clamping part 300 is adjusted to accurately adjust the height of the upper clamping part 300 The height can be adjusted so that more accurate testing is possible.

In addition, the base 100 may include a leveling device 120 and a height adjusting screw 130. In other words, a leveling instrument 120 and a height adjusting screw 130 may be formed to adjust the level of the base 100. The leveling instrument 120 may include a leveling instrument 120 that can align both horizontally and vertically, And a height adjusting screw 130 may be formed at four corners of the base 100. [

In addition, an impact ball detection sensor 450 may be installed in the lower clamping unit 400. That is, in the lower clamping unit 400, an impact ball detection sensor 450 capable of detecting the impact ball is installed to sense that the impact ball passes through the lower clamping unit 400, thereby determining whether the impact ball is in a free fall state The operation of the lower clamping unit 400 is controlled by using the impact ball so that the impact ball that has been sprung after the floor impact is gripped by the grippers 420 of the lower clamping unit 400 As shown in Fig. It is also possible to calculate the number of tests using the impact ball detection sensor 450 in a repeated test.

<Control method of drop test apparatus>

FIG. 6 is a perspective view showing a state in which the impact ball is placed on the upper clamping part before the drop test of the impact ball according to the present invention, FIG. 7 is a view showing a state where the impact ball is dropped from the upper clamping part FIG. 8 is a perspective view showing a state in which the impact ball according to the present invention has fallen and is protruded after impact on the floor. FIG. 9 is a perspective view of the impact ball according to the present invention, 10 is a perspective view showing a state in which the impact ball is moved from the lower clamping portion to the upper clamping portion after the drop test of the impact ball according to the present invention.

As shown in the figure, the method for controlling the automatic impact ball drop test apparatus of the present invention includes: (S10) supporting an impact ball on the upper clamping unit 300; (S20) in which the upper clamping unit 300 is operated to drop the impact ball; When the dropped impact ball bounces after impact on the floor, the lower clamping unit 400 is operated to support the impact ball on the lower clamping unit 400 (S30); A step S40 of lowering the lower clamping unit 400 after the lower clamping unit 400 is raised so that the impact ball is transferred to and supported by the upper clamping unit 300; . &Lt; / RTI &gt;

First, the automatic impact ball drop testing apparatus 1000 according to the present invention is placed in a place to be tested, and then horizontally aligned. The ruler 210 is fixed to the floor, and then the height of the upper clamping unit 300 is adjusted A step of preparing the impact ball to be located at a height that is higher than the height of the impact ball may be performed. Then, the impact ball is put on the upper clamping part 300 so that the impact ball is supported by the grippers 320. Then, when the test operation ON button is pressed, the grippers 320 of the upper clamping part 300 are opened When the impact ball is freely dropped and the dropped impact ball bounces after impacting on the floor, it is detected by the impact ball detection sensor 450 and the grip balls 420 of the lower clamping unit 400 are disengaged and the impact ball is moved to the lower clamping unit When the lower clamping part 400 is lifted up to a position directly below the upper clamping part 300, the impact ball is raised to a height at which the impact ball can be supported by the upper clamping part 300, At this time, the grippers 320 of the upper clamping unit 300 are disengaged, and the lower clamping unit 400 moves downward to return to the original position, and the operation can be controlled so that the grippers 420 are opened again. Thus, the free fall test of the impact ball can be automatically controlled to perform the test.

At this time, in step S30, the falling impact ball is sensed through the impact ball detection sensor 450 installed at a predetermined height, and after the lapse of a predetermined time, the lower clamping unit 400 is actuated, The right impact ball can be supported.

That is, the impact ball dropped by using the impact ball detection sensor 450 and impacted after the impact on the floor can be accurately supported by the lower clamping unit 400. At this time, the impact ball detection sensor 450 senses that the impact ball, which is the first time the impact ball is sensed after pressing the test operation ON button, senses a fall of the impact ball, 420) to be supported so that the impact ball can be supported.

 In step S30, when the impact ball dropped through the impact ball detection sensor 450 installed on the lower clamping unit 400 is sensed, and the impact ball protruded after the floor impact is sensed, So that the impact ball 400 can be supported by the lower clamping part 400 by operating the clamping part 400.

In other words, the impact ball sensing sensor 450 can drop the impact ball so that the impact ball bouncing after impacting on the floor can be accurately supported by the lower clamping unit 400, When the impact ball is sensed for the first time after the impact ball is dropped and the impact ball that bounces after the floor impact is detected for a second time, the grippers 420 of the lower clamping unit 400 are slipped after some time elapses, Can be supported. When the impact ball is supported on the lower clamping unit 400, the impact ball is sensed by the impact ball detection sensor 450, and after a certain time after the impact ball is sensed so that the impact ball is stably supported, the lower clamping unit 400 To move the impact ball upward to move the impact ball to the upper clamping unit 300.

Between steps S10 and S20, when the automatic impact ball drop test apparatus 1000 is turned ON after the number of drops is input to the control unit 500, the number of drops is automatically calculated while calculating the number of drops, Step S20 to step S40 may be repeatedly performed.

That is, the number of drop tests of the impact ball can be measured through the impact ball detection sensor 450, and the drop test can be repeatedly performed automatically according to the number of drop tests inputted while the controller 500 calculates the drop test number.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

1000: Automatic impact ball drop test equipment
100: Base 110: Open
120: Level gauge 130: Height adjusting screw
140: Slot
200: vertical frame 210: ruler
211: fixed slot 220: fixed handle
230: upper fixing plate 240: lower fixing plate
250: first screw 251: height adjustment handle
260: Second screw
270: timing belt 280: servo motor
290: LM bearing
300: upper clamping part 310: support plate
311: Through hole 320: Gripper
321: guide slot 322: rotating roller
330: rotating ring 340: actuator
350: Indicator
400: lower clamping part 410: support plate
411: Through hole 420: Gripper
421: Guide slot 422: Vertical section
430: rotating ring 440: actuator
450: Impact ball detection sensor
500:

Claims (13)

A base having openings penetrating up and down;
A vertical frame extending upward from the base;
An upper clamping unit coupled to the vertical frame and configured to be movable and fixed in a vertical direction and capable of supporting and dropping the impact ball;
A lower clamping unit disposed below the upper clamping unit and coupled to the vertical frame so as to be movable and fixed in a vertical direction and capable of passing and supporting the impact ball; And
A control unit connected to the upper clamping unit and the lower clamping unit to control operations of the upper clamping unit and the lower clamping unit; And an automatic impact ball drop test apparatus for automatically dropping an impact ball.
The method according to claim 1,
Wherein the upper clamping portion is coupled to both sides of the vertical frame in the width direction by an LM bearing,
An upper fixing plate is coupled to the upper side of the vertical frame,
And a height adjustment handle is coupled to an upper end of the first screw so that one side of the first screw is rotatably coupled to the upper fixing plate and the other side is screwed to the upper clamping unit, .
The method according to claim 1,
The lower clamping portion is coupled to both sides of the vertical frame in the width direction by an LM bearing,
An upper fixing plate is coupled to the upper side of the vertical frame and a lower fixing plate is coupled to the lower side,
Wherein both the upper and lower fixing plates are rotatably coupled to each other and the second screw is screwed to the lower clamping unit and the lower end of the second screw is connected to the servo motor.
The method according to claim 1,
Wherein the upper clamping portion and the lower clamping portion comprise:
A support plate coupled to the vertical frame and having through holes penetrating vertically;
A plurality of grippers coupled at one side to the support plate along the circumferential direction of the through hole, the gripper being coupled to be rotatable and movable in the longitudinal direction;
A rotation ring rotatably coupled to the through hole of the support plate, the other side of the gripper being coupled to the rotation shaft; And
An actuator coupled to one side of the support plate and coupled to the other side of the rotation ring so that the rotation ring can rotate forward and reverse; And an automatic impact ball drop test apparatus for automatically dropping an impact ball.
5. The method of claim 4,
Wherein an end portion of the grippers supporting the impact ball of the upper clamping portion is coupled to a rotating roller.
5. The method of claim 4,
And an upper portion is formed at an upper portion of an end portion of grippers for supporting the impact ball of the lower clamping portion.
The method according to claim 1,
A ruler is coupled to the vertical frame in the vertical direction, and an indicator is formed on the upper clamping unit to indicate a scale of the ruler,
Wherein the scale is coupled to a vertical frame so as to be movable and fixed in a vertical direction, and a slot is formed in the base so that a ruler is passed therethrough.
The method according to claim 1,
And a height and a height adjusting screw are formed on the base.
The method according to claim 1,
And an impact ball detection sensor is installed on the lower clamping unit.
10. A method for controlling an automatic impact ball drop testing apparatus according to any one of claims 1 to 9,
(S10) supporting the impact ball on the upper clamping portion;
The upper clamping portion being operated to drop the impact ball (S20);
(S30) so that when the dropped impact ball bounces after impact on the floor, the lower clamping unit is activated to support the impact ball on the lower clamping unit;
(S40) the lower clamping unit is lowered after the lower clamping unit is raised so that the impact ball is transferred to the upper clamping unit; Wherein the automatic impact ball drop test apparatus comprises:
11. The method of claim 10,
In the step S30, the lowering of the impact ball is sensed through an impact ball detecting sensor installed at a predetermined height, and the lower clamping unit is actuated after a predetermined time elapses to support the impact ball that is protruded after the floor impact Wherein said method comprises the steps of:
11. The method of claim 10,
In step S30, when the impact ball dropped through the impact ball detection sensor installed on the lower clamping unit is detected to be lowered and then the impact ball protruded after the floor impact is sensed, the lower clamping unit is operated to move the impact ball to the lower clamping unit And the control unit controls the automatic impact ball drop test apparatus.
11. The method of claim 10,
Between S10 and S20,
When the automatic impact ball drop test apparatus is operated after inputting the number of drops to the control unit, steps S20 to S40 are repeatedly performed according to the number of dropped drops while calculating the number of drops automatically. A method of controlling a device.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180209884A1 (en) * 2017-01-24 2018-07-26 United States Gypsum Company Ball drop iris for vertical impact testing
CN109540704A (en) * 2018-12-29 2019-03-29 东莞市荣享电子科技有限公司 A kind of display screen gravity detection device and its application method
CN113984555A (en) * 2021-12-29 2022-01-28 山东力乐包装股份有限公司 Impact-resistant detection device for wooden tray

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931891B1 (en) * 2009-02-16 2009-12-15 전남대학교산학협력단 The impact sound generating device for the measurement of floor impact sound insulation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180209884A1 (en) * 2017-01-24 2018-07-26 United States Gypsum Company Ball drop iris for vertical impact testing
US10527531B2 (en) * 2017-01-24 2020-01-07 United States Gypsum Company Ball drop iris for vertical impact testing
CN109540704A (en) * 2018-12-29 2019-03-29 东莞市荣享电子科技有限公司 A kind of display screen gravity detection device and its application method
CN113984555A (en) * 2021-12-29 2022-01-28 山东力乐包装股份有限公司 Impact-resistant detection device for wooden tray
CN113984555B (en) * 2021-12-29 2022-03-29 山东力乐包装股份有限公司 Impact-resistant detection device for wooden tray

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