KR20020030389A - High impact drop tester - Google Patents

Abstract

PURPOSE: A high impact drop tester is provided to execute high impact test by dispersing weight thereof. CONSTITUTION: A tester comprises a bottom board(10); rails(14); a fall guiding plate(18); a lift(22); a locking device; a screw(16) and a motor(44). The bottom board has impact tips(12) thereon. The rails are vertically installed on the bottom board. The fall guiding plate is slipped to be engaged with the rails. The lift is installed around the fall guiding plate. The locking device is installed on the lift to lock or release the fall guiding plate. The screw is vertically installed to an outer side of the lift by screw. The motor is installed on a lower end of the screw. Impact is evenly transmitted all over a tested object freely falling.

Description

High Impact Drop Tester {HIGH IMPACT DROP TESTER}

The present invention relates to a high-impact drop tester, particularly by realizing a structure that allows the shock to be evenly transmitted to all the free-falling test object, enabling high-impact test by dispersing its own weight It relates to a drop tester.

In general, the impact drop tester uses a device or a product to test the impact strength to reduce the degree of damage when the product collides with an object to obtain better data by obtaining better data.

Referring to the prior art in Figure 1, a plurality of columns 102 are installed vertically, two pulleys 134 are installed on the top of the column 102, the rail 104 inside the column 102 in the longitudinal direction It is installed along.

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 and the frame ( 110, the carriage 116 is installed at the lower end to put the test object 114.

In addition, the carriage 116 is provided with an accelerometer 118 for measuring an input acceleration value transmitted during the collision, and the test object 114 for measuring the output acceleration value reached through the carriage 116. An accelerometer 120 is installed, and each of the accelerometers 118 and 120 is connected with 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. The upper block 124 is also attached to a lower end of the column 102. The lower block 128 is installed to face the upper side, and the 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 slide mass 106 and the pulley 134 installed on the column 102, and the rope ( 132) At one end, a motor 136 for providing power is installed under the column 102 while winding a portion of the rope 132, and a control panel 138 for transmitting a command is connected to the motor 136.

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 panel 138 is adjusted to operate the motor 136. The motor 136 pulls the rope 132. By pulling, the rope 134 moves along the pulley 134, which causes the slide mass 106 to rise along the rail 104 together with the frame 110, the carriage 116, and the like.

After raising the carriage 116 to a predetermined height as described above, if the control panel 138 is adjusted so that the motor 136 is operated again as opposed to the above, the rope 132 partially wound on the motor 136 is pulled out. The slider mass 106, the frame 110, the carriage 116, the test object 114, and the like fall simultaneously.

As described above, when the carriage 116 is lowered, the pad 126 of the upper block 124 and the pad 130 of the lower block 128 collide with each other to absorb some of the impact and simultaneously impact the upper block 124. And the impact continues to move to 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 determined by the operator simply by referencing and observing the degree of breakage of the test object 114.

The above-described prior art has a structure in which the impact input unit is concentrated only in one place, and thus, it is difficult to execute a high impact test as its own weight increases.

The present invention has a purpose to enable high-impact test by distributing its own weight by making the structure to install the impact input unit.

The present invention for realizing this, a surface plate having an impact tip on the top, a rail installed vertically on the surface plate, a drop guide plate that is slip-coupled to the rail, a lift installed on the outer guide plate; Locking device is provided on the lift to provide an action force to be coupled to or separated from the drop guide plate, the screw is installed vertically while screwed to the outside of the lift, and the motor is installed in the screw lower end.

1 is a front view showing the prior art.

2 is a front view showing the entire drop tester of the present invention.

Figure 3 is a side view showing the entire drop tester constituting the present invention.

4 is a perspective view showing a lift peripheral structure of the present invention;

5 is a perspective view showing a state in which the test object is mounted on the impact input unit installed on the drop guide plate.

6 is a front view showing a locking device of the present invention.

7 is a plan view showing a locking device of the present invention.

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

10: plate 12: shock tip 14: rail

16: Screw 18: Falling guide 20: Mounting groove

22: Lift 24: Wing 26: Column

28: shock input unit 30: test object 32: shock absorption spring

34: accelerometer 36: accelerometer 38: analyzer

40: Slot 42: Chain 44: Motor

46: Chain 48: Sprocket 50: Balance weight

52: supporter 54: guide rod 56: pallet

58: rocker 60: operating part 62: rod

64: cylinder 66: directional control valve 68: pump

70: control panel 72: locking device

2 to 4, a plurality of columns 26 (see FIG. 2) are vertically installed at an outer end of a square plate 10 as shown in FIGS. 2 to 4, and a plurality of columns 26 (see FIG. 2) are placed at a predetermined position on the plate 10. Two impact tips 12 (see Fig. 4) are installed.

Four rails 14 serving as guides are installed vertically on the outside of the impact tip 12, and a pair of screws 16 for transmitting an acting force are located at both centers of both sides of the surface plate 10 so as to face each other. Is installed.

A portion of the other end of the chain 42 for transmitting power is wound around each of the lower ends of the screw 16, and one end of the chain 42 is wound around the motor 44 for providing power. Reference numeral 44 is connected to the control panel 70 for transmitting the operation command.

In addition, the rail 14 is provided with a drop guide plate 18 freely falling having four mounting grooves 20 at the upper end and is coupled to the slide so as to slide up and down.

In this case, the mounting groove 20 is formed on the same line where the impact tip 12 installed on the surface plate 10 is located.

Each of the mounting grooves 20 is provided with a shock input unit 28 shown in Figure 5, the shock input unit 28 is provided with a shock absorbing spring 32 to determine whether the buffering role can be appropriately, Experimental object 30 is located on the top of the shock absorbing spring (32).

An accelerometer 34 is installed at the upper end of the impact input unit 28 to check an input acceleration value transmitted from the drop guide plate 18, and an output transmitted through the impact input unit 28 at the upper end of the test object 30. An accelerometer 36 is installed to check the acceleration value, and each of the accelerometers 34 and 36 has an analyzer 38 for collecting and analyzing signals and is located outside the surface plate 10.

Subsequently, a lift 22 having the same shape is installed at the upper portion of the drop guide plate 18 (see FIG. 1), and screwed to the screw 16 at the upper end thereof, and the upper end of the lift guide 18. Wings 24 are formed to protrude outward, each of the wings 24 has a locking device 72 for providing an action force to fix or detach the drop guide plate 18 as shown in FIG. Is installed.

The locking device 72 is installed as described above, the supporter 52 which is installed vertically to the line and the rear end of the wing 24, respectively, is configured, the guide rod 54 to serve as a guide to the supporter 52 It is installed in the transverse direction, the pallet 56 of the panel type sliding sliding movement as shown in Figure 7 is coupled to the guide rod (54).

In addition, a rocker 58 (see FIG. 6) having a fixed role is vertically installed at the center of the bottom portion of the pallet 56. In this case, the rockers 58 are formed by penetrating through the wings 24, respectively. While passing through) is located at the bottom of the lift 22, the lower end is positioned to give the drop guide plate (18). At the same time, the rocker 58 central rear end is fixedly provided with an operating unit 60 (see FIG. 2) which provides an action force so as to move forward and backward.

Looking at the structure of the operation unit 60, first, the cylinder 64 is provided with a rod 62 is coupled to the rear end of the rocker 58 to transmit an action force, the rod 64 is transferred to the cylinder 64 In addition, a direction control valve 66 is provided to adjust the pressure so as to be reversed, and the direction control valve 66 is connected to a pump 68 providing high pressure air.

In addition, the pump 68 and the direction control valve 66 is connected to the control panel 70 for transmitting the operation command.

In addition, one end of the plurality of chains 46 (see FIG. 4) is fixedly installed at the upper upper end of the lift 22, and the chains 46 have two sprockets 48 installed at the upper end of the column 26 (see FIG. 3). Located in the lower portion of the column 26 while being wound and installed sequentially, the balance weight 50 which easily lifts the lift 22 at the other end of the chain 46 and prevents the load from being applied to the motor 44. ) Are combined.

In this case, the balance weight 50 is installed to slide upward and downward in the column 26.

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

First, the drop guide plate 18 is positioned inside while the lift 22 is placed close to the surface plate 10, and the experimenter impacts the mounting groove 20 (see FIG. 4) of the drop guide plate 18. The shock input unit 28 having the absorbing spring 32 (see FIG. 5) is inserted, and the test object 30 having the accelerometer 36 mounted thereon is mounted on the shock absorbing spring 32.

Then, when the direction control valve 66 is adjusted while operating the pump 68 by adjusting the control panel 70 (see FIG. 2), the high pressure air is supplied to the cylinder 64 while the rod 62 (see FIG. 6) is supplied. The rod 62 pushes the rocker 58 so that the lower end is located on the bottom surface of the drop guide plate 18 so that the drop guide plate 18 is fixedly positioned in the lift 22. .

As described above, when the rocker 58 moves forward, the rocker 58 moves in the slot 40 formed in the wing 24, and at the same time, the upper end slides along the guide rod 54 installed in the wing 24.

When the operator operates the control panel 70 again in the above state, the motor 44 (see FIG. 2) is operated to transmit power to the screw 16 through the chain 42, thereby causing the screw. The right 16 raises the lift 22 which is screwed while rotating.

Accordingly, the drop guide plate 18 along with the lift 22 slides along the rail 14 and rises together with the test object 30. At this time, as the lift 22 is pushed up and the chain 46 is pushed up, the balance weight 50 located in the column 26 is lowered by its own weight.

When the balance weight 50 is lowered as described above, the lift 22 is easily lifted, and thus the motor 44 is loaded with a small load. When the test object 30 is raised to a predetermined height as described above and the control panel 70 is operated, the control panel 70 transmits an operation command to the direction control valve 66 to operate the cylinder 64. Allow rod 62 (see FIG. 6) to reverse.

Therefore, the rocker 58 installed at the tip of the rod 62 is reversed in the slot 40 in the opposite direction as described above, and the lower end is separated from the bottom surface of the drop guide plate 18. Due to this, the drop guide plate 18 is in a floating state, separated from the lift 22 in a state in which the test object 30 is settled due to its own weight, and free-falls.

As described above, when the drop guide plate 18 is lowered, the impact input unit 28 collides with the impact tip 12 (see FIG. 4), and the impact generated at this time is the shock absorbing spring through the impact input unit 28 ( It is passed to the test object 30 through 32).

When the shock transmitted as described above passes through the impact input unit 28, the accelerometer 34 (see Fig. 5) checks the input acceleration value and transmits it to the analyzer 38 so that it is displayed in a graph. Therefore, the operator determines whether the re-experiment is conducted by determining whether the drop impact test is performed in the standard state. When the impact transmitted continuously reaches the test object 30, the accelerometer 36 checks the output acceleration value and transmits the result to the analyzer 38.

When the impact reaches the test object 30 as described above, deformation or breakage occurs in a defective or vulnerable part of the product assembly state, the operator observes this state to determine the quality state.

As described above, the analyzer 38 compares the input acceleration value read by the accelerometer 34 installed in the impact input unit 28 with the output acceleration value read by the accelerometer 36 installed in the test object 30, and outputs the result. If the acceleration value is out of the proper range, retest by replacing a new shock absorbing spring (32). At this time, if the output acceleration value is within the proper range, the experiment is finished.

The present invention has a structure in which the impact can be evenly transmitted to the entire test object falling freely, it is possible to disperse its own weight has a high impact test is possible.

Claims (9)

The surface plate 10 having the impact tip 12 thereon; A rail 14 installed vertically on the surface plate 10; A drop guide plate 18 which is slip coupled to the rail 14; A lift 22 installed at an outer circumference of the drop guide plate 18; A locking device 72 installed on the lift 22 to provide an action force so that the drop guide plate 18 may be coupled or separated; Screw 16 is installed vertically while screwed to the outside of the lift 22, High impact drop tester, characterized in that consisting of a motor (44) installed in the lower end of the screw (16). The method of claim 1, The column 26 is vertically installed on the outside of the surface plate 10 while having the sprocket 48 at the upper end thereof, and a balance weight 50 is installed at the column 26, and an upper end of the balance weight 50 and the High impact drop tester, characterized in that the end of the chain (46) is fixed to the lift (22) while winding a part of the sprocket (48). The method of claim 1, High impact drop tester, characterized in that the shock absorbing spring (32) is installed on the drop guide plate (18). The method of claim 3, wherein High impact drop tester, characterized in that the impact input unit 28 is coupled to the lower portion of the shock absorption spring 32, the impact input unit 28 is installed on the drop guide plate (18). The method of claim 4, wherein A plurality of mounting grooves 20 are formed on the drop guide plate 18 while being positioned on the same line where the impact tip 12 is installed, and the shock absorbing springs 32 are coupled to each of the mounting grooves 20. High impact drop tester, characterized in that the impact input unit 28 is installed. The method of claim 5, Accelerometers (34, 36) are respectively installed in the impact input unit (28) and the test object (30), high impact drop tester, characterized in that the analyzer (38) is connected to each of the accelerometers (34, 36). The method according to any one of claims 1 to 6, The locking device 72 is A rocker 58 having a lower end detachably installed at a bottom of the drop guide plate 18; An actuating part 60 providing an action force to the rocker 58 to move forward and backward, A high impact drop tester comprising a guide rod (54) installed on the lift (22) while slip-coupled to the upper end of the rocker (58). The method of claim 7, wherein The operating unit 60 is configured with a cylinder 64 having a rod 62 coupled to a tip of the rocker 58, the direction control valve 66 is connected to the cylinder 64, the direction control valve High impact drop tester characterized in that the pump (68) is connected to (66). The method of claim 8, High impact drop tester, characterized in that the control panel (70) is connected to the motor (44), the direction control valve (66), the pump (68).