KR101758749B1 - System for testing performance of snubber - Google Patents

System for testing performance of snubber Download PDF

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Publication number
KR101758749B1
KR101758749B1 KR1020150175562A KR20150175562A KR101758749B1 KR 101758749 B1 KR101758749 B1 KR 101758749B1 KR 1020150175562 A KR1020150175562 A KR 1020150175562A KR 20150175562 A KR20150175562 A KR 20150175562A KR 101758749 B1 KR101758749 B1 KR 101758749B1
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KR
South Korea
Prior art keywords
ring
coupling
engagement
guide
pin
Prior art date
Application number
KR1020150175562A
Other languages
Korean (ko)
Other versions
KR20170068736A (en
Inventor
박진영
김태상
이종석
김호룡
김상명
조재우
Original Assignee
(재)한국건설생활환경시험연구원
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Priority to KR1020150175562A priority Critical patent/KR101758749B1/en
Publication of KR20170068736A publication Critical patent/KR20170068736A/en
Application granted granted Critical
Publication of KR101758749B1 publication Critical patent/KR101758749B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests

Abstract

The disclosed shock absorber performance test system includes a base frame, a first support frame, a second support frame, a plurality of guide rods, a first engagement guide engaging a first end of the shock absorber, a second engagement engaging a second end of the shock absorber, A guide, an actuator for providing a tensile force or a contractive force to the buffer, a load cell for measuring a magnitude of a force applied to the buffer, and a coupling pin coupling the buffer and the first coupling guide. The first coupling guide includes a first coupling ring and a second coupling ring that are spaced apart from each other along a second direction perpendicular to the first direction and project toward the buffer. The first end of the shock absorber includes a first end ring disposed between the first engagement ring and the second engagement ring. Wherein the engagement pin passes through the first engagement ring, the first end ring, and the second engagement ring, and the engagement pin includes a first end covering at least a part of a side surface of the first engagement ring, 2 < / RTI > engagement ring. Between the engagement pin and the second engagement ring, a spacer for eliminating the clearance is inserted.

Description

{SYSTEM FOR TESTING PERFORMANCE OF SNUBBER}

The present invention relates to a performance test system, and more particularly, to a performance test system for testing the performance of a buffer.

The shock absorber, particularly the hydraulic shock absorber, is installed in a building such as a factory, a nuclear power plant, a thermal power plant, or a building such as a bridge to provide seismic and impact resistance performance, and is an important factor for maintaining the economical and stability of the mechanical equipment and the building.

These hydraulic shock absorbers need to be tested before they are installed in the field or to ensure they have the required performance during the maintenance period. The performance test of the hydraulic shock absorber can be performed by providing a shrinking force and a tensile force alternately to the hydraulic shock absorber to obtain a graph of a load-displacement relationship.

Considering that the hydraulic shock absorber is used where high stability is required, a high test reliability is required. One of the factors lowering the test reliability is the clearance generated by the combination of the performance test apparatus and the hydraulic shock absorber. This clearance causes a discontinuous section in the graph of the load-displacement relationship, making it difficult to accurately evaluate the performance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shock absorber performance test system which can prevent a gap between a shock absorber and a performance test apparatus.

A shock absorber performance test system according to an embodiment of the present invention includes a base frame, a first support frame coupled to an upper surface of the base frame, a second support frame coupled to an upper surface of the base frame, A plurality of guide rods fixed between the first support frame and the second support frame and extending along the first direction, a plurality of guide rods extending along the first direction, A first coupling guide coupled to the load and coupled to the first end of the shock absorber, a second coupling guide coupled to the plurality of guide rods to allow movement along the first direction, An actuator for providing a tensile force or a contractive force to the buffer through the first coupling guide or the second coupling guide, A load cell coupled to the second coupling guide for measuring a magnitude of a force applied to the buffer, and a coupling pin coupling the buffer and the first coupling guide. The first coupling guide includes a first coupling ring and a second coupling ring that are spaced apart from each other along a second direction perpendicular to the first direction and project toward the buffer. The first end of the shock absorber includes a first end ring disposed between the first engagement ring and the second engagement ring. Wherein the engagement pin passes through the first engagement ring, the first end ring, and the second engagement ring, and the engagement pin includes a first end covering at least a part of a side surface of the first engagement ring, 2 < / RTI > engagement ring. Between the engagement pin and the second engagement ring, a spacer for eliminating the clearance is inserted.

In one embodiment, the shock absorber performance test system further includes a first pin fixing member inserted through the first end of the coupling pin and into the first coupling ring.

In one embodiment, the shock absorber performance test system further includes a second pinning member screwed into the second end of the engagement pin and urging the spacer toward the first end ring.

In one embodiment, the first engagement ring has a discontinuous annular shape including a slit connecting the engagement hole and the outside, and includes a first opposing face and a second opposing face facing each other with the slit therebetween do. Also, the shock absorber performance test system may further include a first ring fixing member passing through the first opposing face, the slit, and the second opposing face, wherein the clearance between the first engaging ring and the engaging pin is removed The first ring fixing member is screwed with the first engagement ring.

According to the present invention, in the shock absorber performance test system, a spacer is provided between a coupling ring that engages with a shock absorber and an engagement pin that penetrates therethrough. The spacer fills a space between the engagement ring and the engagement to prevent the occurrence of clearance. Thus, it is possible to improve the reliability and accuracy of the shock absorber performance test by preventing the occurrence of discontinuous sections of the load-displacement graph when the shock absorber is subjected to a tensile or contractile force to test the performance of the shock absorber.

Further, according to the present invention, a first pin fixing member is provided at the first end of the engagement pin and inserted into the engagement ring, and a second pin fixing member is coupled to the second end of the fourth engagement pin, The position of the engagement pin and the spacer can be fixed. Thus, the reliability and accuracy of the buffer performance test can be improved.

Further, according to the present invention, the engaging ring has a slit, penetrates the slit, and is provided with an annular fixing member screwed with the engaging ring. Through this, the clearance between the engagement ring and the engagement pin can be eliminated, and the stability of the engagement can be improved, thereby improving the reliability and accuracy of the shock absorber performance test.

1 is a perspective view showing a shock absorber performance test system according to an embodiment of the present invention.
2 is a plan view showing a shock absorber performance test system according to an embodiment of the present invention.
3 is a side view illustrating a shock absorber performance test system according to an embodiment of the present invention.
FIG. 4 is an enlarged plan view showing a connection portion between a shock absorber and a first coupling guide in a shock absorber performance test system according to an embodiment of the present invention. FIG.
FIGS. 5A and 5B are cross-sectional views taken along line I-I 'of FIG.
6 is an enlarged perspective view of the spacer of the connection portion of FIG.
FIG. 7 is a side view showing the connection link of the connection portion of FIG. 4. FIG.

Hereinafter, a shock absorber performance test system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

1 is a perspective view showing a shock absorber performance test system according to an embodiment of the present invention. 2 is a plan view showing a shock absorber performance test system according to an embodiment of the present invention. 3 is a side view illustrating a shock absorber performance test system according to an embodiment of the present invention.

1 to 3, a shock absorber performance test system according to an embodiment of the present invention includes a base frame 110, a first support frame 120, a second support frame 130, an intermediate support frame 125 A first coupling guide 150, a second coupling guide 160, an actuator 170, a load cell 180, The shock absorber performance test system is for testing the performance of the shock absorber and may thus include a shock absorber 200 for performance testing.

The base frame 110 constitutes the lower end of the shock absorber performance test system. The base frame 110 is in contact with the ground to support the entire buffer performance test system. The base frame 110 may include a base plate parallel to the paper surface, and a vibration pad 112 coupled to the base plate and damping vibration generated during testing in contact with the paper. In addition, the vibration-proof pad 112 may have a leveling function to adjust the height of the vibration-proof pad 112 through a bolt or the like, thereby adjusting the height and the inclination of the base frame 110.

The first support frame 120 and the second support frame 130 are fixed to the upper surface of the base frame 110, respectively. The first support frame 120 and the second support frame 130 may each have a plate shape perpendicular to the upper surface of the base frame 110. A plurality of guide rods (140) are provided between the first support frame (120) and the second support frame (130) and extend in a direction parallel to the place name, and both ends of the guide rods And is fixed to the frame 120 and the second support frame 130.

The number of the guide rods 140 is preferably at least three. In this embodiment, four guide rods are provided.

The first coupling guide 150 and the second coupling guide 160 are provided between the first support frame 120 and the second support frame 130. The first engaging guide 150 and the second engaging guide 160 engage with the guide rod 140 so as to be movable along the extending direction of the guide rod 140. That is, the guide rods 140 pass through the first engaging guide 150 and the second engaging guide 160, and the first engaging guide 150 and the second engaging guide 160 guide the guide Along a direction in which the rod 140 extends. The first engaging guide 150 and the second engaging guide 160 are engaged with the guide rod 140 so that the first engaging guide 150 and the second engaging guide 160 can be smoothly moved. Such as a ball bush, an oiless bush, or the like, which is in contact with the shaft.

One end of the buffer 200 is coupled to the first coupling guide 150 and the other end of the buffer 200 is coupled to the second coupling guide 160.

An intermediate support frame 125 is disposed between the first engagement guide 150 and the second engagement guide 160. The intermediate support frame 125 is fixed to the upper surface of the base frame 110. The intermediate support frame 125 has a groove or an opening for receiving the shock absorber 200. In addition, the intermediate support frame 125 has a through hole for receiving the guide rod 140. As the guide rod 140 becomes longer, the intermediate support frame 125 prevents stress from being concentrated or deformed in the intermediate portion.

The position of the first coupling guide 150 may be fixed by the fixing stud 190. Specifically, the first coupling guide 150 engages the load cell 180, and the load cell 180 engages with the fixed stud 190. The fixing stud 190 may be fixed to the second support frame 130 by a fixing member such as a nut through the second support frame 130. As a result, the position of the first engaging guide 150 can be fixed by the fixing stud 190.

When the fixing stud 190 is not fixed to the second supporting frame 130, the first engaging guide 150 and the fixing stud 190 can be moved. For example, the shock absorber performance test system may further include a guide rod moving part 155 for moving the position of the first engaging guide 150 along the extending direction of the guide rod 140 have. The guide rod moving part 155 may include a screw jack connected to the first engaging guide 150 for moving the first engaging guide 150 and a motor for driving the screw jack.

The movement of the first coupling guide 150 may be performed according to the size of the shock absorber 200. The buffer performance test system of the present invention can test the performance of buffers of various sizes. When the size of the shock absorber varies, the distance between the first and second coupling guides 150 and 160 needs to be changed. Through the movement of the first coupling guide 150, Can be adjusted. After the gap is adjusted, the fixing stud 190 may be fixed to the first support frame 130 to fix the position of the first coupling guide 150. [ Therefore, the position of the first engaging guide 150 is fixed during the performance test.

The second coupling guide 160 can be moved along the guide rod 140. Accordingly, the second coupling guide 160 can move along the guide rod 140, (200) may occur.

The actuator 170 is coupled to the second coupling guide 160 by an actuator rod 175 passing through the first support frame 120. The shock absorber 200 can be held or pressed by a force generated by the actuator 170. [

The actuator 170 may be a hydraulic actuator. The actuator 170 may include a servo valve for controlling speed and load, and may include a displacement sensor for displacement control and measurement. The actuator 170 may move the actuator rod 175 linearly, specifically, along the direction in which the guide rod 140 extends.

The load cell 180 is coupled to the first coupling guide 150 and the fixing stud 190. Accordingly, the load applied to the shock absorber 200 by the actuator 170 is transmitted to the load cell 180, and the load cell 180 includes a measurement sensor for measuring the load cell 180.

FIG. 4 is an enlarged plan view showing a connection portion between a shock absorber and a first coupling guide in a shock absorber performance test system according to an embodiment of the present invention. FIG. FIGS. 5A and 5B are cross-sectional views taken along line I-I 'of FIG. 6 is an enlarged perspective view of the spacer of the connection portion of FIG. FIG. 7 is a side view showing the connection link of the connection portion of FIG. 4. FIG.

Referring to FIG. 4, the first engaging guide 150 includes a first engaging portion that engages with the shock absorber 200. The first coupling portion includes a first coupling loop 152a and a second coupling loop 152b protruding along the first direction D1 toward the buffer 200 and having an annular shape.

The first engagement ring 152a and the second engagement ring 152b are spaced from each other along the second direction D2, which is perpendicular to the extending direction of the guide rod. The first engagement ring 152a and the second engagement ring 152b have engagement holes into which the engagement pins 156 are inserted. A first end ring 210 of the shock absorber 200 is disposed between the first engagement ring 152a and the second engagement ring 152b. The first end ring 210 of the shock absorber 200 has a coupling hole into which the coupling pin 156 is inserted.

The coupling holes of the first coupling ring 152a, the first end ring 210 and the second coupling ring 152b are engaged with the first coupling ring 150a to couple the buffer 200 and the first coupling guide 150, The first end ring 210 is disposed between the first engagement ring 152a and the second engagement ring 152b so as to be collinear along the second direction D2. Next, the engaging pin 156 is inserted into the first engaging loop 152a, the first end loop 210, and the second engaging loop 152b along the second direction D2.

The first end of the engaging pin 156 has a diameter larger than the inner diameter of the engaging hole so as to form a latching protrusion. For example, the first end of the engagement pin 156 covers at least a portion of a side of the first engagement loop 152a.

After the engaging pin 156 is inserted into the first engaging loop 152a and the second engaging loop 152b, the first end is engaged with the first engaging loop 152a by the first pin fixing member 157, (Not shown). The first pin fixing member 157 may penetrate the first end of the coupling pin 156 and be inserted into the side of the first coupling ring 152a. A plurality of the first pin fixing members 157 may be provided.

When the engaging pin 156 is inserted into the first engaging loop 152a and the second engaging loop 152b, the second end of the engaging pin 156 is retracted from the side of the second engaging loop 152b Respectively.

5A and 5B, a spacer 159 is inserted between the second engagement ring 152b and the engagement pin 156. As shown in FIG. The spacer 159 fills a space between the second engaging hook 152b and the engaging pin 156 to prevent the occurrence of play. Accordingly, it is possible to improve the reliability and accuracy of the shock absorber performance test by preventing the occurrence of discontinuous sections of the load-displacement graph when the shock absorber 200 is subjected to tensile force or shrinkage force to test the performance of the shock absorber 200 . As shown in FIG. 6, the spacer 159 may have a cylindrical shape and may be made of a general steel material.

In the present invention, various types of shock absorbers to be subjected to the performance test may be used, and thus the size of the end rings of the shock absorbers coupled with the first coupling guide 150 may be varied. Accordingly, in the present invention, a plurality of the coupling pins 156 may be different in size depending on the buffer, and the spacers 159 may also be divided into a plurality of May be used.

A second pin fixing member 158 is coupled to the second end of the coupling pin 156. The second pin fixing member 158 not only prevents the engaging pin 156 from moving or being separated in the second direction, but also presses the spacer 159, 1 end ring 210, so that the position of the spacer 159 is fixed. The coupling pin 156 and the second pin fixing member 158 are screwed to each other so that the second pin fixing member 158 and the second pin fixing member 158 A thread can be formed. The second pin fixing member 158 engages with the engaging pin 156 to surround the outer peripheral surface of the second end of the engaging pin 156.

Referring to FIG. 7, the first engagement ring 152a has a slit 153 connecting the engagement hole and the outside. Accordingly, the first engagement ring 152a may have a discontinuous annular shape. The first engagement ring 152a has a first opposing face 151a and a second opposing face 151b facing each other with the slit 153 therebetween.

The first ring fixing member 154a is inserted into the first engagement ring 152a. The first ring fixing member 154a is inserted so as to penetrate the slit 153. [ Specifically, the first ring fixing member 154a may penetrate the first opposing face 151a, the slit 153, and the second ring opposing face 151b. The first ring fixing member 154a can prevent deformation of the first engagement ring 152a due to stress concentrated by the slit. In addition, by screwing the first engagement ring 152a, the diameter of the engagement hole can be reduced by tightening the engagement hole. Accordingly, the space between the coupling pin 156 and the first engagement ring 152a can be reduced to prevent the occurrence of clearance. To this end, the first end of the first ring fixing member 154a may have a greater width than the second end to form a latching jaw, and a thread may be formed at the second end.

7 shows the engagement between the first engagement ring 152a and the first ring fixing member 154a, but the second engagement ring 152b can also engage in the same manner as the second ring fixing member 154b.

4 to 7 illustrate the coupling between the shock absorber 200 and the first engaging guide 150, the shock absorber 200 and the second engaging guide 160 are also coupled in a similar manner Of course.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

The present invention can be used for performance testing of shock absorbers and the like.

Claims (4)

A base frame;
A first support frame coupled to an upper surface of the base frame;
A second support frame coupled to an upper surface of the base frame and spaced apart from the first support frame along a first direction;
A plurality of guide rods fixed between the first support frame and the second support frame and extending along the first direction;
A first engaging guide engaging with the plurality of guide rods to be movable along the first direction and engaging with a first end of the shock absorber;
A second coupling guide coupled to the plurality of guide rods so as to be movable along the first direction, the second coupling guide engaging with the second end of the buffer;
An actuator for providing a tensile force or a contractive force to the buffer through the first coupling guide or the second coupling guide;
A load cell coupled to the first coupling guide or the second coupling guide for measuring a magnitude of a force applied to the buffer; And
And a coupling pin coupling the buffer and the first coupling guide,
The first coupling guide includes a first coupling ring and a second coupling ring spaced from each other along a second direction perpendicular to the first direction and projecting toward the buffer,
Wherein the first end of the shock absorber comprises a first end ring disposed between the first engagement ring and the second engagement ring,
Wherein the engagement pin passes through the first engagement ring, the first end ring, and the second engagement ring,
Wherein the engagement pin has a first end covering at least a part of a side surface of the first engagement ring and a second end protruding from a side surface of the second engagement ring,
A spacer for removing the clearance is inserted between the engagement pin and the second engagement ring,
A first pin fixing member inserted through the first end of the coupling pin and inserted into the first coupling ring; And
And a second pin fixing member having a thread on the inner surface for screwing with the second end of the coupling pin and surrounding the outer peripheral surface of the second end of the coupling pin and pressing the spacer toward the first end ring Wherein the shock absorber performance test system comprises: delete delete [3] The apparatus of claim 1, wherein the first engagement ring includes a slit that connects the engagement hole and the outside, has a discontinuous ring shape, and has a first opposing face and a second opposing face facing each other with the slit therebetween Including,
Further comprising a first ring fixing member passing through the first opposing face, the slit, and the second opposing face, wherein the first ring fixing member And the second coupling ring is screwed to the first coupling ring.
KR1020150175562A 2015-12-10 2015-12-10 System for testing performance of snubber KR101758749B1 (en)

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KR101758749B1 true KR101758749B1 (en) 2017-07-17

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100865991B1 (en) * 2007-06-21 2008-10-29 주식회사 세미코 Clamp for a scaffold pipe
KR101305933B1 (en) * 2013-05-28 2013-09-09 케이.엘.이.에스 주식회사 Apparatus for testing performance of hydraulic shock absorber

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100865991B1 (en) * 2007-06-21 2008-10-29 주식회사 세미코 Clamp for a scaffold pipe
KR101305933B1 (en) * 2013-05-28 2013-09-09 케이.엘.이.에스 주식회사 Apparatus for testing performance of hydraulic shock absorber

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