KR20180067126A - Apparatus and Method for testing plate spring - Google Patents

Abstract

The present invention relates to an apparatus for inspection, and a method for inspection. The present invention comprises: a support unit for supporting a plate spring; an operation unit capable of generating rotary force; a power transmission unit connected to the support unit to change the rotary force of the operation unit to a vertical movement and transmit the rotary force to the plate spring; and a measuring unit installed on the support unit to measure amplitude of the plate spring. Further, the present invention can check an amount of deflection of the plate spring and whether cracks are generated.

Description

[0001] APPARATUS AND METHOD FOR FORMING TEST PLATE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an inspection apparatus and an inspection method, and more particularly to an inspection apparatus and an inspection method capable of inspecting deflection of a leaf spring and occurrence of a crack.

In general, a mold used in a casting facility is a device for producing a cast steel by cooling the molten steel. The mold can be oscillated up and down by a vibrator (or an oscillator). When casting the cast steel, vibrating the casting mold up and down by the operation of the vibrator allows the casting casting downward to more smoothly escape through the casting mold. In addition, since the vibrator vibrates the mold vertically, it is possible to prevent a break-out phenomenon in which the wall of the mold and the solidification film of the casting are adhered to each other and the solidification film bursts and molten steel flows out.

For example, the vibrator may include a hydraulic cylinder, a frame that is vibrated by the hydraulic cylinder and connected to the mold, and a leaf spring mounted on the frame. At this time, when the leaf spring is broken, cracks, center segregation, and break-out phenomenon may occur on the surface of the cast steel being cast. Therefore, it is necessary to check the state of the plate spring.

However, conventionally, since the state of the leaf spring is visually confirmed, the state of the leaf spring can not be accurately confirmed. In addition, since the replacement period of the leaf spring and the management standard are unclear, the leaf spring is replaced every year regardless of the state of the leaf spring, so that much time and cost are wasted in maintenance.

KR 2002-0052054 A KR 2007-0012369 A

The present invention provides an inspection apparatus and an inspection method that can easily check the amount of deflection of a leaf spring and whether or not a crack has occurred.

The present invention provides an inspection apparatus and an inspection method capable of facilitating maintenance of a facility having a leaf spring.

The present invention relates to a measuring instrument comprising a support for supporting a measurement object; A driving unit capable of generating a rotational force; A power transmission unit connected to the support unit to change the rotational force of the driving unit to a vertical motion and transmit the rotational force to the measurement object; And a measurement unit installed on the support unit to measure the amplitude of the measurement object.

The measurement object includes a leaf spring.

Wherein the support portion comprises: a plurality of first support members capable of fixing one side and the other side of the leaf spring; And a second support member for supporting between the one side and the other side of the leaf spring and connected to the power transmission portion.

The plate spring may be installed in a vibrator capable of vibrating a mold of a casting facility, and the first support member and the second support member may be screwed to the plate spring, The portion to be screwed is the same as the portion to be screwed to the first support member and the second support member.

And a magnetic member having a magnetic force is provided on at least a part of the first support member and the second support member.

Wherein the power transmission unit includes: a coupling having one side connected to the driving unit; And a cam member connected to the other side of the coupling and capable of moving the second support member up and down while rotating.

The position of the cam member in the vertical direction can be adjusted so as to adjust the amplitude of the leaf spring.

A comparing unit comparing the amplitude value measured by the measuring unit with a predetermined set value; And a determination unit determining that the amplitude value is defective if the amplitude value is less than the set value.

The present invention relates to a process for supporting a leaf spring; Generating a vibration at a central portion of the leaf spring; And measuring the amplitude of the central portion of the leaf spring.

The process of supporting the leaf spring includes fixing both sides of the leaf spring, and the process of generating the vibration at the center of the leaf spring includes vertically vibrating between the one side and the other side of the leaf spring. .

And measuring the amplitude of the central portion of the leaf spring, and then determining the state of the leaf spring.

The step of determining the state of the leaf spring may include the steps of: comparing an amplitude value of the measured leaf spring with a predetermined set value; And determining that the amplitude value is defective if the amplitude value is less than the set value.

Further comprising the step of checking whether a crack or a cut portion has occurred in the leaf spring after generating vibration at the center of the leaf spring.

The plate spring is provided in a vibrator capable of vibrating a mold of a casting installation.

According to the embodiments of the present invention, it is possible to easily check the amount of deflection and the occurrence of cracks of the leaf spring. Therefore, the state of the leaf spring can be confirmed more accurately than when checking the state of the leaf spring only by naked eyes.

In addition, it is possible to accurately determine the life span and replacement timing of the leaf spring, thereby facilitating the maintenance of the equipment provided with the leaf spring. Therefore, it is possible to reduce the time and cost required for managing the facility.

For example, in the case of inspecting the state of the leaf spring provided in the vibrator of the casting facility, it is possible to prevent the facility from being excessively managed, and to prevent the occurrence of the break-out phenomenon by using the vibrator stably.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the structure of a casting facility according to an embodiment of the present invention; Fig.
2 is a view showing a structure of a vibrator according to an embodiment of the present invention.
3 is a front view showing a testing apparatus according to an embodiment of the present invention;
4 is a plan view of a testing apparatus according to an embodiment of the present invention;
5 is a side view and a sectional view showing the structure of a testing apparatus according to an embodiment of the present invention;
6 is a flowchart illustrating an inspection method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. To illustrate the invention in detail, the drawings may be exaggerated and the same reference numbers refer to the same elements in the figures.

FIG. 1 is a view showing a structure of a casting facility according to an embodiment of the present invention, and FIG. 2 is a view showing a structure of a vibrator according to an embodiment of the present invention. Although the embodiment of the present invention describes the inspection of the leaf spring included in the vibrator used in the steel production process, the scope of application is not limited to this, but may be applied to the case of inspecting the leaf spring provided in other equipment have.

Referring to FIGS. 1 and 2, a casting installation according to an embodiment of the present invention includes a casting mold 20 for casting molten steel, a plurality of conveying rollers 20, which are located below the casting mold 20, A cutter 40 disposed on the path of the casting to cut the casting slides moving along the conveying rollers and a vibrator 50 for vibrating the casting mold 20. [

The mold 20 may be a frame for determining the appearance of the gold product by solidifying the molten steel. The mold 20 has a pair of structurally opposed surfaces opened to form a hollow portion for receiving the molten steel supplied from the nozzle 15 of the tundish 10 arranged on the upper side. The molten steel supplied into the mold 20 can be produced as the molten steel is coagulated by being deprived of heat energy.

The cooling stand 30 is disposed on the lower side of the mold 20. The cooling stand 30 includes a plurality of conveying rollers that are continuously disposed to form a movement path of the casting that is drawn to the lower portion of the casting mold 20 to perform a series of forming operations while cooling the unfused casting. In addition, a spray nozzle (not shown) for spraying cooling water on a part of the traveling path of the cast steel may be provided for rapidly solidifying the cast steel. Thus, the cooling water can be sprayed on the upper and lower surfaces of the cast steel, and the cast steel can be solidified by spraying cooling water on both sides of the cast steel.

The cutter 40 is disposed in the movement path of the casting, and serves to cut the cast into a desired size by the operator. The cutter 40 may include a cutter body movably installed along the movement path of the casting machine and a pair of cutting torches movably installed in the width direction of the casting body on the front or rear face of the cutter body. Therefore, it is possible to perform the operation of cutting the slab with the cutting torch while moving the cutter body in accordance with the speed of the casting slider moving by the feed roller.

The vibrator 50 includes a fixed frame 51, a vibrating frame 52 mounted on the fixed frame 51 and capable of up and down vibrations, a vibration unit 53 connected to the vibrating frame 52 to generate vibration, A leaf spring 55 provided on the fixed frame 51 and capable of supporting and vibrating the vibrating frame 52 and a cover 54 provided on the fixed frame 51. [ At this time, the vibration unit 53 may be a hydraulic cylinder.

The plate spring 55 may be formed in the shape of a rectangular plate, and may generate vibration by an elastic force. The leaf spring 55 may be formed with a through hole through which the bolt can be fastened. Accordingly, the plate spring 55 and the fixed frame 51 are detachably connected to each other by bolts, and the plate spring 55 and the vibration frame 52 are detachably connected to each other by bolts. However, the structure and the shape of the leaf spring 55 are not limited to this and may vary.

When the casting mold 20 is vibrated up and down by the operation of the vibrator 50 when casting the casting mold, the casting outgoing to the lower side can more smoothly escape from the inside of the casting mold 20. In addition, since the vibrator 50 vibrates the mold vertically, it is possible to prevent break-out phenomenon in which the wall of the mold 20 and the solidification film of the casting are adhered to each other and the solidification film bursts and molten steel flows out.

At this time, when the leaf spring 55 is broken, cracks, center segregation, and break-out phenomenon may occur on the surface of the cast steel being cast. Therefore, the state of the plate spring 55 can be checked by the inspection apparatus.

FIG. 3 is a front view showing an inspection apparatus according to an embodiment of the present invention, FIG. 4 is a plan view showing an inspection apparatus according to an embodiment of the present invention, FIG. 5 is a view showing a structure of an inspection apparatus according to an embodiment of the present invention Side view and cross-sectional view.

3 to 5, an inspection apparatus 100 according to an embodiment of the present invention includes a support 110 supporting a measurement object, a drive unit 120 capable of generating a rotation force, And a measurement unit (not shown) installed on the support unit 110 to measure the amplitude of the measurement object. The power transmission unit 130 is connected to the support unit 110 to change the up / down motion to the measurement object. At this time, the measurement object may be a leaf spring.

The inspection apparatus 100 further includes a comparison unit (not shown) for comparing the amplitude value measured by the measurement unit with a predetermined set value, a determination unit (not shown) for determining that the measured amplitude value is less than the set value, And a support 140 for supporting the driving unit 120 and the power transmission unit 130. [ At this time, the plate spring 55 may be a plate spring included in the vibrator for vibrating the mold of the casting equipment.

The supporting portion 110 serves to support the leaf spring 55. The support portion 110 supports a plurality of first support members 111 capable of fixing one side and the other side of the leaf spring 55 to each other and between one side and the other side of the leaf spring 55, And a second support member 112 connected to the transmission unit 130. Further, the support 110 may further include a support frame 113.

The first support member 111 serves to support the end of the leaf spring 55. That is, the first support member 111 may be a clamp. For example, the main body of the first supporting member 111 may be composed of two first plates 111a spaced apart from each other. The leaf spring 55 may be positioned between the two first plates 111a so that the distance between the two first plates 111a may be reduced and the leaf spring 55 may be brought into close contact with the leaf spring 55. [ A liner is provided at a portion of the first plate 111a that contacts the leaf spring 55 to reduce the frictional force generated at the portion of the leaf spring 55 connected to the first support member 111 when the vibration is generated.

Also, a first fastening screw 111b is provided to penetrate through the two first plates 111a and through holes formed in the leaf spring 55, and can be fastened. The first support member 111 and the leaf spring 55 are detachably coupled to each other by the first fastening screw 111b. When the first fastening screw 111b is tightened, the first support member 111 And can be brought into close contact with the leaf spring 55.

In addition, two first support members 111 may be provided and may be spaced from each other in the extending direction of the leaf spring 55. Each of the first support members 111 can be connected to each of both sides of the leaf spring 55. At this time, the positions of the first support members 111 may be aligned with the positions of the through holes formed at the end portions of the leaf spring 55. Therefore, when the first support member 111 and the leaf spring 55 are coupled by the first fastening screw 111b, the through holes may not be formed in the leaf spring 55, The first support member 111 and the leaf spring 55 can be engaged with each other through the through hole.

Alternatively, the first support member 111 may be provided with a magnetic member having a magnetic force at least in part. For example, the magnetic member may be an electromagnet. Accordingly, when power is supplied to the electromagnet, the leaf spring 55 can be attached to the magnetic member by magnetic force, and when the power supply is interrupted, the magnetic force is lost and the leaf spring 55 can be easily separated from the magnetic member. Accordingly, the first support member 111 and the leaf spring 55 can be coupled without a separate through-hole in the leaf spring 55. However, the method of coupling or connecting the first support member 111 and the plate spring 55 is not limited to this and may be various.

The support frame 113 is connected to the first support member 111 to fix the first support member 111. The support frame 113 may form a skeleton of a rectangular parallelepiped, and the first support members 111 may be installed on the upper portion of the support frame 113 to be spaced apart from each other. Since the support frame 113 is fixed to the floor, the position of the first support member 111 can also be fixed. Therefore, both sides of the leaf spring 55 (or a portion connected to the first support member 111) can move up and down only the center of the leaf spring 55 in a fixed state. However, the structure and the shape of the support frame 113 are not limited to this and may vary.

The second support member 112 serves to move the center of the leaf spring 55 up and down while supporting the center of the leaf spring 55. That is, the second support member 112 may be a clamp. For example, the body of the second support member 112 may be composed of two second plates 112a spaced apart from each other. The plate spring 55 can be positioned between the two second plates 112a and the space between the two second plates 112a can be reduced and brought into close contact with the plate spring 55. [ A liner is provided at a portion of the second plate 112a that contacts the plate spring 55 to reduce a frictional force generated at a portion of the leaf spring 55 connected to the first support member 111 when the vibration is generated.

Also, the second fastening screw 112b is provided to penetrate through the two second plates 112a and the through-holes formed in the leaf spring 55, and can be fastened. The second support member 112 and the leaf spring 55 can be detachably coupled to the second fastening screw 112b and the second fastening screw 112b can be tightened so that the second support member 112 And can be brought into close contact with the leaf spring 55.

At this time, the position of the second support member 112 may be aligned with the position of the through hole formed at the center of the leaf spring 55. Therefore, when the second support member 112 and the leaf spring 55 are coupled by the second fastening screw 112b, the through holes may not be formed in the leaf spring 55, The second support member 112 and the leaf spring 55 can be coupled using the formed through-hole.

That is, the first support member 111 and the second support member 112 can be screwed to the plate spring 55, and the portion of the plate spring 55, which is screwed with the vibrator 50, May be the same as the portion to be screwed to the support member 111 and the second support member 112. [ Therefore, in order to connect the paper support member 111 and the second support member 112 to the plate spring 55, a separate through hole may not be formed.

Alternatively, the second support member 112 may be provided with a magnetic member having a magnetic force at least in part. For example, the portion of the magnetic member which contacts the leaf spring 55 may be an electromagnet. Accordingly, when power is supplied to the electromagnet, the leaf spring 55 can be attached to the magnetic member by magnetic force, and when the power supply is interrupted, the magnetic force is lost and the leaf spring 55 can be easily separated from the magnetic member. Accordingly, the second support member 112 and the leaf spring 55 can be coupled to each other even if the leaf spring 55 does not have a separate through-hole. However, the method of coupling or connecting the second support member 112 and the leaf spring 55 is not limited to this and may be various.

A pair of protrusions spaced apart from the extending direction of the leaf spring 55 may be formed on the lower portion of the body of the second support member 112. A portion of the cam member 132 of the power transmission unit 130 can be inserted between the protrusions and the center shaft 112d can be connected to the cam member 132 through the protrusions. Thus, the second support member 112 and the cam member 132 can be rotatably connected by the center shaft 112d. The center shaft 112d is provided with a ball bearing 112f to reduce friction. However, the structure of the second support member 112 is not limited to this and may vary.

The driving unit 120 may be a motor that generates rotational force. The driving unit 120 may rotate the rotation shaft 121 to provide rotational force to the power transmission unit. The number of revolutions per minute of the rotation shaft 121 can be controlled so that the frequency of the center portion of the second support member 112 or the leaf spring 55 can be controlled by the power transmission unit 130. Thus, the operator can control the operation of the driving unit 120 to adjust the rotation speed of the rotation shaft 121 per minute.

The power transmission unit 130 converts the rotational force transmitted from the driving unit 120 into a vertical movement and transmits the rotational force to the center of the second support member 112 or the leaf spring 55. The power transmitting portion 130 includes a coupling 131 connected to one side of the driving portion and a cam member 130 connected to the other side of the coupling 131 and capable of moving the second supporting member 112 up and down while rotating, (132).

The coupling 131 serves to connect the rotation shaft 121 of the driving unit 120 and the shaft of the cam member 132. [ The rotation shaft 121 may be coupled to one side of the coupling 131 and the shaft may be coupled to the other side of the coupling 131. Thus, the rotational force of the rotational shaft 121 is transmitted to the shaft, and the cam member 132 can rotate.

The cam member 132 serves to convert the rotational force generated by the driving unit 120 into vertical motion. The cam member 132 may include a shaft and a cam.

The shaft may be a shaft extended in one direction. The shaft may be connected to the coupling 131 at one end and connected to the rotation shaft 121 of the driving unit 120 by the coupling 131 to rotate. The shaft may be provided with a first bearing 132a and a second bearing 132b.

The pair of first bearings 132a are provided on both sides of the shaft and serve to maintain the center point of the cam member 132. [ The second bearing 132b may be a ball bearing, and may be provided at a portion of the shaft that is connected to the cam to reduce friction. However, the types and the number of the bearings to be provided are not limited thereto and may be various.

The cam may be positioned between the first bearings 132a. The cam can be a flat cam and can be formed into an egg shape. Therefore, when the cam rotates, the cam can rotate eccentrically, and the second support member 112 can be moved up and down. However, the shape of the cam and the structure of the cam member 132 are not limited to this and may vary.

At this time, the vertical position of the cam member 132 of the leaf spring 55 can be adjusted. The amplitude of the second support member 112 connected to the cam member 132 may vary depending on the position of the cam member 132. [ Therefore, the amplitude of the second support member 112 can be preset by adjusting the position of the cam member 132. [ For example, the position of the cam member 132 can be adjusted by rotating a screw (not shown). If the state of the leaf spring 55 is normal, the second support member 112 can vibrate by a preset amplitude, and if it is defective, the second support member 112 may not vibrate by a predetermined amplitude.

The support base 140 is fixed to the floor and supports the drive unit 120 and the power transmission unit 130. Thus, even if the driving unit 120 is operated to generate vibration, the supporting table 140 can prevent the entire apparatus from shaking. The driving unit 120 and the power transmitting unit 130 may be installed on the support base 140.

The measurement part can be installed on the second support member 112 to measure the amplitude of the central part of the leaf spring 55. [ Since the second support member 112 is connected to the center portion of the leaf spring 55 to move the center portion of the leaf spring 55 up and down, the amplitude of the second support member 112 is measured, The amplitude is known. For example, the measuring portion may be a dial gauge, and the distance (or amplitude) at which the center portion of the leaf spring 55 moves up and down can be measured. However, the method of measuring the amplitude of the plate spring 55 by the measurement unit is not limited to this, and may vary.

And is connected to the comparator measuring unit to receive the measured value from the measuring unit. Thus, the comparing unit can compare the amplitude value measured by the measuring unit with a predetermined setting value. The set value can be selected by the operator in advance. The set value may be the same value as the amplitude value of the second support member 112 selected by the operator.

The judging unit is connected to the comparing unit. If the amplitude value measured by the measuring unit is less than the set value, it can be judged that it is defective. That is, if the leaf spring 55 is not bent by the set value, it can be determined that the leaf spring 55 is not bent by the set value because it is defective. Conversely, if the amplitude value measured by the measuring unit is equal to the set value, the state of the leaf spring 55 can be determined as normal. That is, since the plate spring 55 is normal, it can be determined that the plate spring 55 can be bent by the set value.

If it is determined that the state of the leaf spring 55 is defective, the leaf spring 55 may not be installed in the facility. Therefore, it is possible to prevent the plate spring 55 from being damaged while operating the equipment due to breakage at an unexpected time. If it is determined that the state of the leaf spring 55 is normal, the leaf spring 55 can be installed in the facility. Therefore, it is possible to predict the replacement time of the leaf spring 55 by accurately predicting the life of the leaf spring 55.

Particularly, when inspecting the state of the plate spring 55 provided in the vibrator 50 of the casting facility, it is possible to prevent the facility from being excessively managed, and the breaker phenomenon is generated by using the vibrator 50 stably Can be prevented.

6 is a flowchart showing an inspection method according to an embodiment of the present invention.

Referring to FIG. 6, an inspection method according to an embodiment of the present invention includes a step of supporting a leaf spring (S100), a step of generating vibration (S200) at a central portion of the leaf spring, (S300). At this time, the plate spring may be a plate spring provided on the vibrator capable of vibrating the mold of the casting equipment.

The inspection method will be described in detail with reference to FIGS. 3 to 6. FIG. First, an inspection apparatus 100 capable of inspecting the state of the leaf spring 55 is provided. The leaf springs 55 can be connected to the pair of first support members 111 and the second support members 112 provided in the inspection apparatus 100. The pair of first support members 111 can fix one side and the other side of the leaf spring 55 (or both sides can be fixed), and the second support member 112 can support the leaf spring 55, As shown in FIG. Thus, three portions of the leaf spring 55 can be respectively supported by the support members.

The support members and leaf spring 55 can be screwed together. Alternatively, a magnetic member having a magnetic force may be provided on at least a part of the support members. Thus, the magnetic members may be attached to the leaf spring 55. However, the method of connecting the leaf spring 55 and the supporting members is not limited to this and may be various.

Then, the operation of the cam member 132 connected to the second support member 112 can be controlled to move the second support member 112 up and down. The cam member 132 can receive the rotational force from the driving unit 120 and move the second supporting member 112 up and down. Accordingly, the portion (or the central portion) between one side and the other side of the leaf spring 55 connected to the second support member 112 can be moved up and down. Therefore, the center of the leaf spring 55 can be vibrated up and down in a state in which both sides of the leaf spring 55 are fixed.

At this time, the frequency of rotation of the second support member 112 can be controlled by controlling the rotating speed of the rotation shaft 121 of the driving unit 120. Therefore, the central portion of the plate spring 55 can be vibrated in accordance with the frequency of oscillation of the actual mold 20 in the casting equipment.

Further, by adjusting the position of the cam member 132, the amplitude of the second support member 112 can be adjusted. Accordingly, by adjusting the vertical position of the cam member 132, the amplitude of the second supporting member 112 can be selected by the operator as a desired value.

Then, the center portion amplitude of the leaf spring 55 can be measured while the plate spring 55 is vibrated. For example, a dial gauge may be provided on the second support member 112 and the center portion amplitude of the leaf spring 55 connected to the second support member 112 through the dial gauge may be measured. However, the present invention is not limited to this, and the amplitude of the leaf spring 55 can be measured by various methods.

The state of the leaf spring 55 can be determined after the amplitude of the central portion of the leaf spring 55 is measured. That is, the amplitude value of the measured leaf spring 55 can be compared with a predetermined set value (S400). For example, the set value can be set to 3 mm. The set value may be the same value as the amplitude value of the preselected second support member 112 by adjusting the position of the cam member 132.

If the amplitude value of the measured leaf spring 55 is less than 3 mm, the amplitude is smaller than that intended to be generated by oscillating the second support member 112. That is, since the state of the leaf spring 55 is defective, the leaf spring 55 is not smoothly bent, and the second support member 112 connected to the leaf spring 55 may not vibrate by an amplitude selected by the operator . Therefore, if the amplitude value of the measured leaf spring 55 is smaller than the set value, it can be determined that the state of the leaf spring 55 is defective.

Conversely, if the amplitude value of the measured leaf spring 55 is equal to the set value, the second support member 112 vibrates at an amplitude selected by the operator. That is, since the measured state of the plate spring 55 is normal, the second support member 112 connected to the plate spring 55 can be vibrated by the operator's selected amplitude. Accordingly, if the amplitude value is equal to the set value, the state of the leaf spring 55 can be determined to be normal (S500). However, the set value is not limited to this and can be variously selected.

It is also possible to confirm whether a crack or a cut portion has occurred in the leaf spring 55 after generating the vibration at the central portion of the leaf spring 55. That is, since the plate spring 55 generates vibration, when the plate spring 55 has a crack, the size of the crack increases or the plate spring 55 can be cut. Therefore, when the plate spring 55 is vibrated for a long time and the surface of the plate spring 55 or the state of change of the coating film is examined, it is possible to easily check whether the plate spring 55 has a crack or a cut portion.

Then, if it is determined that the state of the plate spring 55 is normal, the plate spring 55 can be installed in a facility to be used. Since the proven leaf spring 55 is used, the life of the leaf spring 55 can be predicted, and the replacement timing can be easily determined.

Since the amount of deflection of the leaf spring 55 and the occurrence of a crack can be easily checked, the state of the leaf spring 55 can be confirmed more accurately than when the state of the leaf spring 55 is visually checked. Thus, it is possible to accurately determine the life span or replacement timing of the leaf spring 55, thereby facilitating the maintenance of the equipment including the leaf spring 55, and reducing the time and cost required for managing the equipment .

Particularly, when inspecting the state of the plate spring 55 provided in the vibrator 50 of the casting facility, it is possible to prevent the facility from being excessively managed, and the breaker phenomenon is generated by using the vibrator 50 stably Can be prevented.

Although the present invention has been described in detail with reference to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be defined by the appended claims, as well as the appended claims.

50: Vibrator 55: Plate spring
100: Inspection apparatus 110: Support
111: first support member 112: second support member
120: driving part 130: power transmission part
131: coupling 132: cam member

Claims (14)

A support for supporting an object to be measured;
A driving unit capable of generating a rotational force;
A power transmission unit connected to the support unit to change the rotational force of the driving unit to a vertical motion and transmit the rotational force to the measurement object; And
And a measuring unit installed on the supporting unit to measure the amplitude of the measurement object. The method according to claim 1,
Wherein the measurement object includes a leaf spring. The method of claim 2,
The support portion
A plurality of first support members capable of fixing one side and the other side of the leaf spring, respectively; And
And a second support member that supports between the one side and the other side of the leaf spring and is connected to the power transmission portion. The method of claim 3,
The leaf spring can be installed in a vibrator capable of vibrating a mold of a casting facility,
The first support member and the second support member may be screwed to the leaf spring,
Wherein a portion of the leaf spring threadedly engaged with the vibrator is the same as a portion screwed to the first support member and the second support member. The method of claim 3,
Wherein a magnetic member having a magnetic force is provided on at least a part of the first support member and the second support member. The method of claim 3,
The power transmission unit includes:
A coupling having one side connected to the driving unit; And
And a cam member connected to the other side of the coupling and capable of moving the second support member up and down while rotating. The method of claim 6,
And the vertical position of the cam member can be adjusted so as to adjust the amplitude of the leaf spring. The method according to any one of claims 1 to 7,
A comparing unit comparing the amplitude value measured by the measuring unit with a predetermined set value; And
And if the amplitude value is less than the set value, judges that it is defective. Supporting the leaf spring;
Generating a vibration at a central portion of the leaf spring; And
And measuring an amplitude of a center portion of the leaf spring. The method of claim 9,
The process of supporting the leaf spring may include fixing both sides of the leaf spring,
And the step of generating vibration at the central portion of the leaf spring includes vertically vibrating between the one side and the other side of the leaf spring. The method of claim 9,
After measuring the amplitude of the central portion of the leaf spring,
Further comprising the step of determining the state of the leaf spring. The method of claim 11,
The process of determining the state of the leaf spring may include:
Comparing the amplitude value of the measured leaf spring with a predetermined set value; And
And determining that the amplitude value is defective if the amplitude value is less than the set value. The method according to any one of claims 9 to 12,
After generating vibration at the central portion of the leaf spring,
Further comprising the step of checking whether a crack or a cut portion has occurred in the leaf spring. The method according to any one of claims 9 to 12,
Wherein the plate spring is provided in a vibrator capable of vibrating a mold of a casting facility.

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